JP2005504196A - Improved masking of insulating glass units, monolithic panes, and other supports - Google Patents

Abstract

The present invention provides improved masking of monolithic panes, insulating glass units, and other supports. In certain embodiments, the protective cover includes a plurality of strips of masking material. In some embodiments, the overmasked portion of the pane surface has a smaller area than the pane surface itself, but remains exposed by the frame (ie, left uncovered) when the pane is attached. The protective cover, which can take the form of a single sheet of masking material or multiple masking strips, is sized, formed and positioned so that it is larger than the exposed central region. In certain aspects, the pane is attached to the frame such that at least one edge of the pane is received in the frame. The pane has a protective cover disposed on the masked portion of its major surface. The major surface has an unmasked apron between the outer periphery of the protective cover and the outer periphery of the pane. The protective cover is sized, formed and positioned so that at least one peripheral side portion thereof extends at least somewhat below the opposing surface of the frame.

Description

【Technical field】
[0001]
The present invention relates generally to protective masking materials that can be applied to insulating glass units, monolithic panes, and other supports. More particularly, the present invention relates to a support carrying a masking material of an advantageous configuration.
[Background]
[0002]
In the most industrialized countries, there are windows everywhere where people work and live. Windows allow the building occupants to see the outside world while allowing sunlight to enter the building. Sunlight is a natural antidepressant and helps the human body produce vitamin D. Thus, a certain amount of sunlight is essential for mental and physical well-being. Windows seem to deliver sunlight and contribute to the spiritual and physical well-being of the community.
[0003]
Significant energy may be lost through the windows when the building is heated during the winter and when the building is cooled during the summer. As the cost of energy increases, efforts have been made to provide insulation for homes and other buildings that more effectively prevent heat transfer between the outside and inside of the building. High performance monolithic panes and insulating glass units (ie, IG units) have been developed to reduce the amount of heat transfer through the window. For example, the window glass can be provided with a low emissivity coating that reduces the transmission of radiant heat through the window. Furthermore, the IG unit includes a sealable space between the panes of the unit (ie, the space between the panes). The space between the panes provides additional insulation, and this insulating effect can be enhanced by filling the space between the panes with an insulating gas.
[0004]
IG unit panes, as well as monolithic panes, can be damaged or soiled during transportation to the building site or during installation and building processes. Typically, the installation and building process involves the efforts of various technicians, such as carpenters, cement workers, and painters. During such processing, one or more panes may be inadvertently scratched or coated with paint, contaminants, or other finishing materials. It is therefore advantageous to temporarily mask the surface of the pane during transport, installation and construction.
[0005]
Attempts have been made to temporarily mask the surface of the pane. For example, U.S. Pat. No. 5,020,288 and U.S. Pat. No. 5,107,643 (both issued to Swensen) scratch the glass in doors and windows from abrasion and painting processes. A method of protecting is disclosed. In this method, before installing the panes in the frame, each side of each pane is covered with a protective coating material. After installation and all finishes are completed, the protective material is cut off from the inner edge of the frame, leaving a residual coating of protective material along the outer edge and surrounding surface of each pane. This residual coating material remains sandwiched between the frame and each side of each pane. The teachings of both of these Swensen patents are incorporated herein by reference.
[0006]
The Swensen method is advantageous in that the entire surface of the pane is covered and thus protected by the masking material. As a result, there is virtually no opportunity for paint or other dripping or splashing and in some way it goes to the unprotected area of the pane. However, in many cases, it is preferable to bond the frame directly to the pane surface rather than to the masking material remaining on the outer edge and surrounding surface of the pane. This is believed to provide an optimal coupling between the frame and the pane.
[0007]
In this regard, US Pat. No. 5,599,422 and US Pat. No. 5,866,260 (both issued to Adams Jr. et al.) (The entire teachings of each of which is cited) Which is incorporated herein by reference). These patents disclose glazing protected by a single sheet of masking material that covers the central area of the glazing surface but not the boundary area of the surface. When the masked glazing is installed in the window frame, only the uncovered border area of the glazing surface is present under the frame. Thus, the frame is directly bonded to the glazing surface. During sanding, painting or other finishing, the central area of the glazing is protected by a masking material. After all installation and processing procedures are complete, the masking material is removed to expose the clean central area of the glazing.
[0008]
The Adams Jr. method is advantageous in that the frame is bonded directly to the glazing rather than to the masking material remaining on the glazing. However, the inventors teach that the uncovered border area must have a width that is at least as wide as the distance the frame extends across the pane boundary. When the glazing is installed, the masking material does not extend under the frame at all. Eventually, there is a risk that paint and other finishing materials will drip, splash or otherwise go to the unmasked border area of the glazing. For example, if the size, shape, or positioning of the masking material is inaccurate, the uncovered border area of the glazing (eg, between the inner edge of the frame and the outer periphery of the masking material) is at least somewhat exposed. Will. When the masking material is preferably sized, formed and positioned on each and every glazing, the masking material does not extend under the inner edge of the frame at all. This ensures that paint and other finishing materials do not go on the glazing because there is no possibility of overmasking material.
DISCLOSURE OF THE INVENTION
[Means for Solving the Problems]
[0009]
One aspect of the present invention provides a transparent pane having first and second generally opposing major surfaces. The transparent pane is sized and shaped to be attached to a frame configured to receive at least one edge thereof. The transparent pane has a protective cover disposed on a major portion of its first surface. The protective cover includes a plurality of strips of masking material. If so desired, the masking material can be transparent.
[0010]
In another aspect, the present invention provides a transparent pane having first and second generally opposing major surfaces. The transparent pane is sized and shaped to be attached to a frame configured to receive at least one edge thereof. The transparent pane has a protective cover disposed over the overly masked portion of its first surface. The protective cover includes at least one piece of masking material. The overmasked portion of the first surface has a smaller area than the first surface itself, but when the pane is attached, it is more than the exposed central portion of the first surface that is not covered by the frame. Has a large area.
[0011]
In yet another aspect, the present invention provides a transparent pane having first and second generally opposing major surfaces. The transparent pane is attached to a frame in which at least one edge of the pane is received. The transparent pane has a protective cover disposed on the masked portion of its first surface. This first surface has an unmasked apron extending between the outer periphery of the protective cover and the outer periphery of the pane. The protective cover comprises at least one piece of masking material, and is sized, formed and positioned such that at least one peripheral side portion of the protective cover extends significantly below the opposing surface of the frame. Yes.
[0012]
In yet another aspect of the present invention, the present invention provides a fit assembly that includes a transparent pane and a frame to which the pane is attached. The transparent pane has first and second generally opposing major surfaces and at least one edge received in the frame. The transparent pane has a protective cover disposed on the masked portion of its first surface. This first surface has an unmasked apron extending between the outer periphery of the protective cover and the outer periphery of the pane. The protective cover comprises at least one piece of masking material and is sized, formed and positioned such that at least one peripheral side portion of the protective cover extends significantly below the opposing surface of the frame. .
BEST MODE FOR CARRYING OUT THE INVENTION
[0013]
The present invention will be described in detail below with reference to the drawings. Here, like elements are given like reference numerals. The drawings are not necessarily to scale and depict selected embodiments and are not intended to limit the scope of the invention.
[0014]
The present invention provides a masked pane (eg, a glazing). As can be seen with reference to FIG. 1, the pane is typically a generally flat, sheet-like support. Thus, the support typically has two generally opposing major surfaces, which are preferably planar and substantially parallel to each other. In most cases, the support will be a sheet of transparent material (eg, a transparent pane). For example, the support can be glass, transparent plastic, or other sheet. One type of glass commonly used in the manufacture of glass products (eg, insulating glass units) is soda lime glass. Soda lime glass is a preferred support. Of course, other types of glass can be used as well, including alkali lime silicon dioxide glass, phosphate glass, and molten silicon dioxide.
[0015]
Thus, a pane having first and second generally opposing major surfaces is provided. The pane has a protective cover disposed on at least a portion of its first surface. Preferably, the protective cover is disposed on a major portion (ie 50% or more) of the first surface. For example, the first surface of the pane has an unmasked surrounding apron (described below), but can be completely masked otherwise. In one embodiment, the protective cover is disposed over and covers a central portion of the first surface, which spans at least 70%, preferably at least 75% of the first surface. In certain embodiments, the protective cover includes a plurality of strips of masking material, as shown in FIG. In other embodiments, the protective cover consists of a single sheet of masking material, as described later in this disclosure.
[0016]
In some embodiments, the transparent pane is part of a multi-pane insulating glass unit (ie, an IG unit). IG units are very well known in the field. FIG. 2 illustrates one example of an IG unit 36 that can be provided in connection with the present invention. However, the present invention is not limited to implementations using any particular type of IG unit. Conversely, all aspects of the invention can be implemented using any type of IG unit. Thus, the type of IG unit illustrated should not be construed as limiting the scope of the invention. Further, although the term insulating “glass” unit is used throughout the present disclosure, it should be understood that the pane is not necessarily formed from glass.
[0017]
The IG unit 36 illustrated in FIG. 2 includes a masked first pane 2A and an unmasked second pane 2B. More particularly, the outer surface 14 'of the first pane 2A carries a protective cover 20 of masking material. The protective cover 20 can consist of a single sheet of masking material, but it can include multiple strips of masking material, as described below. Moreover, both panes 2A, 2B can be masked as needed.
[0018]
As described above, the IG unit 36 of FIG. 2 includes a first pane 2A and a second pane 2B that together form a pair of spaced apart panes. The panes 2A, 2B bound the interpane space 15 between them (ie, the “space between panes” or “gas space”) and the external space 250 around them. Preferably, the panes 2A, 2B are spaced by a spacer 38 in a substantially parallel relationship. The peripheral liner surface of the pane is typically joined by a spacer. Thus, the spacer 38 and the opposing inner surfaces 24, 24 'of the panes 2A, 2B together define an interpane space 15.
[0019]
Typically, the spacer 38 is formed from a metal (eg, aluminum) or metal alloy tube. However, spacers formed from plastic or other rigid material can be used. Spacers can be provided in various cross-sectional configurations. For example, FIG. 1 depicts one spacer design that is useful. Particularly useful spacers are US Pat. No. 5,377,473, US Pat. No. 5,439,716, US Pat. No. 5,679,419, US Pat. No. 5,705,010 and US Pat. , 714, 214, the entire disclosure of each of which is hereby incorporated by reference. A wide variety of useful spacers are commercially available from known suppliers, such as Alumet Manufacturing, Inc. (Malisville, WA, USA).
[0020]
Regardless of the particular spacer configuration used, the spacer characteristically includes two generally opposite lateral walls that are coupled to the respective inner peripheral surfaces of the first 2A and second 2B panes. . The coupling of the spacer to the pane desirably forms a hermetic seal, which prevents air or other gases from entering and leaving the interpane space. As depicted in FIG. 2, the interior of the spacer desirably carries a deposit of desiccant 11. The desiccant 11 is provided in the form of particles (eg, in the form of granules or powder) to facilitate the flow of the desiccant into the spacer. It is preferred to use a low deflection desiccant (ie, a desiccant that minimizes adsorption of gases in the air, particularly nitrogen). For example, a desiccant containing only 3A molecular sieves or a blend of 3A sieves and silica gel would be suitable in most cases. This type of desiccant is commonly used in the field and is available from a number of well-known commercial suppliers.
[0021]
The sealing system of the IG unit desirably minimizes gas flow between the gas space within the unit and the ambient environment outside the unit. Some IG units have only a single seal, while high performance units typically have two seals: a primary or “first” seal (ie, the seal closest to the interpane space) and Secondary or “second” seal (ie, the furthest seal relative to the interpane space). When present, a first seal (not shown) typically joins the lateral walls of the spacer to the peripheral inner surface of the pane. The seal is preferably formed from a material that is resistant to permeation of air, moisture, and any insulating gas filling. For example, the first seal can be formed from a butyl sealant (eg, polyisobutylene). As depicted in FIG. 2, the second seal 17 is typically applied on the outer wall of the spacer. The seal 17 is preferably formed from a material having excellent adhesion. For example, the second seal can be formed from silicone, polysulfide, polyurethane, or any other material that adhesively bonds to the spacer and pane. Thus, the spacer, together with the first and second seals, isolates the interpane atmosphere from the ambient atmosphere.
[0022]
Conveniently, the interpane space of the IG unit can be filled with an insulating gas. Argon is a preferred insulating gas. Krypton gives better performance but is more expensive than argon. Other inert gases can be used as well. Argon, krypton, and other inert gases are commercially available from a number of suppliers, including the following suppliers: BOC Gases, Murray Hill, NJ, USA, Air Products and Chemicals, Inc. (Air Products and Chemicals, Inc., Allentown, Pa., USA) and Air Liquide America Corporation (Cambridge, MD, USA).
[0023]
It may be preferred to fill the interpane space of the IG unit with a gas mixture of air and at least one insulating gas. The concentration of air and insulating gas can be varied to suit different applications. However, concentrations of 80-98% by volume argon and 2-20% by volume air are considered appropriate. For example, a concentration of 97 vol% argon and 3 vol% air gave excellent results. Other gases (eg, nitrogen) can be included as well. Particularly useful methods and apparatus for filling an IG unit with an insulating gas are disclosed in the following US patents: US Pat. No. 5,957,169 and US Pat. No. 6,158,483, each of which All teachings are hereby incorporated by reference.
[0024]
High performance IG units usually have an insulating gas fill, but many units simply contain air. In any case, the interpane space is usually filled to a pressure equal to or as close to that of the ambient atmosphere as possible. Conversely, a convenient method of intentionally overfilling (ie filling to a pressure above atmospheric pressure) or underfilling (ie filling to a pressure below atmospheric pressure) is intentionally overfilled by the following US patent: No. 6,216,751 (issued to Trpkovski), the entire teachings of which are hereby incorporated by reference. Thus, the interpane space 15 can be filled to a pressure slightly higher or slightly lower than that of the ambient atmosphere 250 as required.
[0025]
With continued reference to FIG. 2, the inner surface 24 of the pane 2A carries an optional low emissivity coating 40. As will be apparent to those skilled in the art, this characteristic coating can be formed on either or both of the inner pane surfaces 24, 24 '. Optionally, the low emissivity coating 40 can be omitted entirely (eg, both inner surfaces can be uncoated). A number of useful low emissivity coatings are well known. Particularly useful low emissivity coatings are disclosed in the following US patents and patent applications: US Pat. Nos. 5,302,449 and 5,834,103, and US patent application Ser. No. 09/728, No. 435, the entire teaching of each of them, is hereby incorporated by reference. Other thin film coatings can be applied to one or both inner surfaces 24, 24 'of the IG unit.
[0026]
In the embodiment of FIG. 2, the outer surface 14 of the first pane 2A is masked. Although the masked outer surface 14 of this pane 2A is not shown as having a thin film coating, it is anticipated that the masking material of the present invention will be applied over the coated surfaces of monolithic panes and IG units. Is done. Thus, the masked surface of a monolithic pane or IG unit can carry its protective cover on a variety of different thin film coatings.
[0027]
In certain embodiments, a monolithic pane or IG unit is provided having a protective cover of removable masking material disposed on a hydrophilic coating on the outer surface of the pane or IG unit. Particularly useful hydrophilic coatings are disclosed in the following US patent applications: US application 09 / 868,542, US application 09 / 572,766, and US application 09 / 599,301. Nos., The entire contents of each of which are incorporated herein by reference. If desired, a hydrophilic coating can be applied over the low emissivity coating formed directly on the outer surface of the pane or IG unit, as described in the following US patent applications: Patent application 09 / 868,542, the entire teachings of which are hereby incorporated by reference.
[0028]
It may be particularly advantageous to form a protective cover of masking material on the hydrophilic surface during transport, installation and construction. For example, some of the materials that are normally present during such processing (eg, silicone and others) may otherwise contaminate the hydrophilic surface, reduce hydrophilicity, or make it more hydrophobic. There is a particular tendency to. Thus, one aspect of the present invention provides a monolithic pane or IG unit having a hydrophilic outer surface (eg, a hydrophilic outer coating) carrying a protective cover of removable masking material. The protective cover can take the form of a single masking sheet or multiple strips of masking material. Further, the protective cover can be placed in any masking configuration described herein.
[0029]
This embodiment is particularly advantageous. This is because it has been found that it is surprisingly difficult to prevent the hydrophilic coating from becoming contaminated in such a way that the hydrophilic coating becomes substantially less hydrophilic. It is particularly surprising that this can occur even when the coating does not appear to be exposed to abnormal levels of contamination. For example, hydrophilic outer coatings become contaminated during normal processing, storage, and shipping. In fact, this contamination can begin even before the coated panes leave the coating facility, storage environment, or IG unit assembly plant. Thus, the masking material can be applied rather than applied immediately before the surrounding sash, frame, and other paint or other finishes (which can be implemented after the pane or IG unit is installed in the building wall). It is preferred to apply as soon as possible. However, in some embodiments, a protective cover is applied with one of the disclosed masking configurations to panes or IG units already installed in the walls of the building.
[0030]
One method of the invention comprises the following steps: providing a monolithic pane or IG unit having a hydrophilic outer surface (eg carrying a hydrophilic outer coating); and removing over at least a portion of the hydrophilic surface Apply protective cover of possible masking material. Preferably, the coated pane or IG unit is sent to a building site (eg, a construction site) or before sending the pane or IG unit to another location where the pane or IG unit is installed at its final location ( For example, masking material is applied before the pane or IG unit is installed in the building wall. For example, the masking material is conveniently applied in the assembly equipment of the IG unit. In addition, the method can include the following steps: transporting the unmasked, coated monolithic pane to the assembly facility of the IG unit and / or building the masked IG unit from the assembly facility of the IG unit. Transport to the site where the masked and coated IG units (which can carry multiple overlapping masking strips) are incorporated into the sash and / or frame. In one particular embodiment, a plurality of masked IG units are transported from the IG unit assembly facility (after being bundled as needed, as described below) to the frame assembly facility, where the IG unit is sashed. And / or in the frame.
[0031]
FIG. 1 is a perspective view of an assembly 100 according to one exemplary embodiment of the present invention. The assembly 100 includes a pane 102 (eg, a transparent pane) having a first surface 104 that is preferably generally planar. The protective cover 120 is disposed on at least a portion of the surface 104 (ie, the masked portion 122). In the illustrated assembly 100, only a portion (ie, not all) of the first surface 104 is masked. Preferably, the main part of the first surface is masked. In some embodiments, the masking material covers at least 70%, more desirably at least 75% of the first surface. Thus, the present invention provides a masking arrangement in which less than the entire first surface 104 is masked. However, the present invention also provides a masking configuration in which the protective cover 120 is disposed over the entire pane first surface 104. Both types of convenient masking configurations are described below.
[0032]
In an embodiment similar to the embodiment illustrated in FIG. 1, the protective cover 120 includes a plurality of strips of masking material. In such embodiments, the masking strip is not necessarily required, but is preferably transparent. The strips forming the protective cover 120 are arranged in a sequential overlapping manner, with each subsequent strip overlapping a portion of the preceding strip. The masking strips shown in FIG. 1 are positioned in such a sequentially overlapping configuration. In particular, the protective cover 120 includes a first strip 130A and a second strip 130B that partially overlaps the first strip 130A. In addition, the protective cover 120 includes a third strip 130C that partially overlaps the second strip 130B. Thus, one aspect of the present invention provides a protective cover that includes at least three, or more preferably, at least four adjacent strips of masking material applied in a sequentially overlapping configuration. The protective cover can include any number of strips without departing from the scope of the present invention.
[0033]
In the embodiment of FIG. 1, the overlapping strips of masking material are applied in certain desirable configurations where the strips are generally parallel to each other. That is, the pane 102 has a plurality of elongated masking strips that extend substantially parallel across the pane surface 104. Preferably, the overlapping strips of masking material are exactly parallel to each other. Also, in many cases, it is preferable to apply all of the masking material with exactly the same length. Thus, the masking strip can be applied in a configuration where the masking strips are exactly parallel and have exactly the same length. This characteristic masking configuration is particularly advantageous in cases where the pane 102 has a square or rectangular shape. For example, a square or rectangular protective cover can be applied very accurately in this way. More specifically, each peripheral edge (of the protective cover) defined by a plurality of masking strips (ie, each composite peripheral edge 121C) is accurately aligned by applying overlapping masking strips in this manner. Can do. Preferably, the ends of the masking strips defining each composite perimeter edge 121C are in relation to each other such that each composite perimeter edge 121C is uniformly parallel to and at an equal distance from adjacent edges of the masked pane. Is exactly aligned. In most cases, all of the protective cover's peripheral edges 121 (not just the composite peripheral edge 121C) are uniformly parallel to and evenly spaced from each adjacent edge of the masked portion. Moreover, it would be optimal to construct a protective cover.
[0034]
When prepared, the overlapping strips of masking material can be configured to extend across the surface 104 of the pane 102. In the embodiment of FIG. 1, the strips of masking material are such that their length (ie, their major dimensions) extend across the width of the pane surface rather than the length of this surface (which is greater than the width). Applies to However, in the preferred embodiment of FIGS. 4 and 5, a strip of masking material is applied across the length of the pane surface. The terms “width” and “length” as used herein refer to the small and major dimensions of each major surface of a generally rectangular pane or IG unit, respectively.
[0035]
As described, the protective cover can include a plurality of masking strips applied in a sequential overlapping manner. The amount by which adjacent masking strips overlap each other (ie, the “masking overlap dimension”) can be varied as desired. This is perhaps best understood with reference to FIGS. 4, 6, and 8. FIG. Here, the masking overlap dimension is indicated by the reference symbol D. In these drawings, the hidden lateral edges of each masking strip (ie, the lateral edges covered by adjacent masking strips) are indicated by dashed lines 13. The masking overlap dimension D is selected to produce the required size of the protective cover. One skilled in the art can easily select and change the overlap dimensions of the masking strips as needed (eg, for differently configured monolithic panes or IG units).
[0036]
In one aspect of the invention, a pane is provided having overlapping strips of masking material that completely covers the major surface of the pane. This is advantageous in that the paint and other finish materials do not reach the pane surface virtually at all because the entire surface is masked. In this embodiment, removal of the masking material can be performed in a number of different ways. For example, the masking material can be cut or otherwise separated along the inner edge of the frame to which the pane is attached. The central portion of the masking material is then removed, leaving a residual masking material between the frame and the border area of the pane. This type of removal option is described in the aforementioned Swensen patent. While this is a viable option, it is preferable to leave no residual masking material between the frame and the pane for many applications (eg when exposing the masked surface to the outdoor environment). I will.
[0037]
Thus, it may be preferable to provide an overlapping masking sheet that covers an area that is smaller than the entire pane surface. For example, consider that a fitting compound (or “bedding material”) is commonly applied between the window frame and the edge area of each pane placed in the frame. It may be difficult to pull the masking material out of the pane if the inlaying compound is applied to a major extent over the surrounding portion of the masking material. For example, the adhesion of the inset compound will tend to hold the masking material against the pane. In addition, forcing the masking material away from the pane can adversely affect the integrity of the seal provided by the mating compound. Thus, it is preferred that the masking material be sized, formed and positioned so that the masking material does not end under the mating compound.
[0038]
The present invention provides a number of aspects in which multiple overlapping masking sheets cover an area that is smaller than the entire pane surface. For example, the first surface 104 of the pane 102 shown in FIG. 1 has an unmasked apron 124 (ie, an unmasked surface area). The unmasked apron 124 extends between the outer periphery 126 of the protective cover 120 and the outer periphery 128 of the pane 102 (ie, the outer periphery 128 of the pane surface 104). In this aspect of the aspect, the first surface of the pane can be completely masked except for the unmasked surrounding apron. In FIG. 1, an unmasked apron 124 extends between the outer periphery 126 of the protective cover 120 and the outer periphery 128 of the pane 102. That is, the entire periphery of the first surface is not masked.
[0039]
In one aspect, when the glazing is attached to the frame, multiple overlapping masking sheets are applied to the pane surface so that the peripheral edge of the protective cover is just at the inner edge of the frame but does not extend below the frame. Size, form and position on top. 4 and 7A-7C, if the width W of the apron 324 that is not masked by the frame overlap dimension OD where the opposing surface 93 of the frame 90 extends over the surface 14 of the pane 2A is equal, Achievable. With reference to FIGS. 7A-7C, the protective cover 20 can optionally be configured to extend at least slightly below the inner edge 98 of the frame 90. For example, the protective cover 20 can preferably extend significantly below the inner edge 98 of the frame 90, but optimally does not extend so far as to engage the mating compound between the frame 90 and the pane 2A. In one aspect, the protective cover is configured to extend a predetermined distance X below the inner edge of the frame. The distance X is at least about 1/16 inch, or perhaps optimally about 1/8 inch, depending on the dimensions of the required frame assembly. Various aspects of this characteristic are described in further detail below.
[0040]
In general, there are numerous ways to remove a protective cover that includes overlapping strips of masking material. For example, the exposed lateral edge 16 of the strip can simply be grasped and the strip pulled from the pane. In this way, one strip can be removed at a time. In some cases, all of the strips can be removed simultaneously by grabbing the uncovered edge 16 of a single strip and pulling the strip away from the pane. When overlapping strips are attached to each other (eg, they can be joined with an adhesive), this joins the other strip to the strip that is pulled away from the pane. As a result, some or all of the strips can be removed as an integral sheet. As will be appreciated, this removal method can be used for embodiments in which the protective cover includes overlapping masking sheets, regardless of how much of the pane surface is masked.
[0041]
In prior art methods using a single sheet of masking material, too much masking of the pane surface can complicate complete removal of the masking material. For example, consider removing a single sheet of masking material after placing the masked pane in a frame. Here, the masking material is configured such that the peripheral edge of the masking material is hidden under the frame. This masking material will not have an accessible edge that can be easily removed by grabbing it and pulling it out of the pane. As a result, removal is not particularly convenient. In contrast, the masking arrangement of the present invention inherently leaves the exposed edge 16 of the overlapping strip, which forms an easily accessible means for removing the protective cover. These overlapping masking configurations allow the masking material to be configured on the attached pane so that the masking material extends under the inner edge of the frame and is still easily removed.
[0042]
The masking configuration of the present invention can be used in combination with panes having any required shape (which can be part of an IG unit of multiple panes). For example, the major surface of the masked pane may be semicircular (eg, having a perimeter consisting of one straight base side and one curved semicircular side), triangle (eg, consisting of three straight sides) Can have a shape that is perimeter), circular (eg, has a perimeter of one circle), or any other required shape. In many cases, each major surface of the pane will have a polygonal (eg, square or rectangular) shape with three or more sides (eg, four sides). In such cases, the protective cover will typically have 3 or more sides. As previously mentioned, certain aspects of the present invention provide a masked pane having an unmasked apron that extends along all sides of the pane surface. However, the unmasked apron need not necessarily extend along the entire circumference of the pane surface. In fact, the present invention provides a number of aspects in which the unmasked apron extends along a portion of the pane that is smaller than the full perimeter (ie, the unmasked apron extends along the partial perimeter of the pane). For example, the unmasked apron 124 can be configured to extend along one, two, or three sides of a square or rectangular masked surface. This can be done for a number of reasons, including providing additional means for ultimately removing the protective cover. For example, the protective cover can be sized, formed, and positioned so that the unmasked apron is completely hidden under the frame when the masked glazing is attached. This will leave a protective cover with at least one accessible (i.e. not hidden under the frame) perimeter edge, thus allowing the exposed edge to be gripped and the masking material pulled away from the pane.
[0043]
For example, masked with a width W along one or two sides of the masked surface that is significantly greater than the frame overlap dimension OD (ie, the distance that the opposing surfaces of the frame extend over the pane surface). It may be desirable to provide a protective cover with no apron. This leaves one or two peripheral edges of the accessible protective cover after installation in the frame (ie, one or two peripheral edges are not hidden under the frame). The exposed edge or edges provide an additional means of removing the protective cover so that the exposed edge can be simply grabbed and removed from the pane by pulling the protective cover. Furthermore, if the two corners defining the peripheral edge of the protective cover remain exposed in this way, the removal is particularly advantageous because the exposed corners are much easier to grip than a single exposed edge. Will. One skilled in the art may desire other configurations where the unmasked apron extends along an area that is smaller than the full perimeter of the pane, and such configurations are also within the scope of the present invention.
[0044]
FIG. 3 is a perspective view of an assembly 200 in accordance with an additional exemplary embodiment of the present invention. The assembly 200 includes an IG unit 236. The IG unit 236 includes a first pane 202A, a second pane 202B, and a spacer 238. The spacer 238 joins the inner peripheral surfaces of the first pane 202A and the second pane 202B. The first pane 202A, the second pane 202B, and the spacer 238 together define an inter-pane space. As described above, the interpane space can be filled with an insulating gas (eg, argon, krypton, and / or the like). Moreover, the aspect in which the space between panes contains only air or vacuum is possible. The illustrated IG unit 236 has a double glazing (ie it has two panes). However, other IG unit configurations can be used without departing from the scope of the present invention. For example, the IG units can be fitted with window panes in a single, triple, or otherwise.
[0045]
With continued reference to FIG. 3, the first pane 202 </ b> A of the IG unit 236 has a masked first surface 204. The illustrated protective cover 220 includes a plurality of strips of masking material disposed on the first surface 204 of the first pane 2A. In this embodiment, the overlapping strips of masking material extend across the first surface 204. Preferably, the longitudinal (ie, lengthwise) axis and / or lateral edge of each overlapping masking strip is parallel to two sides of pane 202A and to the other two sides of pane 202A. Vertical. However, this is by no means a requirement.
[0046]
Referring to the masking material, it will be understood that each sheet preferably includes a masking support 232 and an optional masking adhesive 234. Typically, the masking support 232 has a first major surface 206A and a second major surface 206B, which are preferably planar, generally opposed, and substantially parallel to each other. When prepared, the adhesive 234 is preferably disposed on at least a portion of the first surface 206A of the masking support 232. However, masking adhesive is optional. For example, non-adhesive adhesion aspects (ie shrink wrap, static adhesion, and others) are anticipated. When prepared, the masking adhesive preferably has a selected level of adhesion so that the masking support can be easily pulled from the pane.
[0047]
In certain preferred embodiments, both masking support 232 and optional adhesive 234 are optically transparent or translucent. Such masking tends to provide excellent contact transparency, which facilitates visual inspection of the masked monolithic pane or masked IG unit. In such an embodiment, each pane is preferably optically transparent as well so that the masked product can be seen through. In one embodiment, each pane is a glass sheet and the masking material is a transparent (eg, optically clear) polymeric material.
[0048]
The masking support can comprise a variety of materials. For example, the masking support is usually a film (which can be flexible and self-supporting), but paper, foil, or others can be used for some applications. Polymer films are particularly effective. For example, the masking support can be polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyurethane, polytetrafluoroethylene (PTFE), polyester (eg, PET), polyamide, or polyimide. The masking support can also be a mixture of films, such as a coextruded polyethylene-polypropylene film.
[0049]
The masking support does not need to carry an adhesive (eg, “adhesion” application is possible). However, it is preferred to place any masking adhesive on the surface of the masking support. When prepared, the masking adhesive can be a conventional pressure sensitive adhesive. It is preferred to select a masking adhesive that has minimal adhesive transfer (ie, leaving a minimal amount of adhesive residue on the pane after removal). In some cases, the applied masking material will require long-term moisture resistance. For example, the masked surface may be exposed to the outdoor environment as it involves periodic contact with water (eg, humidity, rain, and other precipitates). In such a case, it is preferred that the masking adhesive is not a water-based adhesive in order to avoid adhesive movement and adhesive failure.
[0050]
Useful masking films are commercially available from a number of suppliers, including the following suppliers: Permacel (New Brunswick, NJ, USA), Poli-Film America, Hampshire, Illinois, USA), and American Biltrite Inc., New Berlin, Wisconsin, USA.
[0051]
In the embodiment of FIG. 3, only the outer surface 204 of the first pane 202A is masked. However, both panes 202A, 202B can be masked as needed. Another aspect (not shown) includes a first protective cover (which may include one or more sheets of masking material) on the outer surface 204 of the first pane 202A and the outer surface of the second pane 202B. An IG unit is provided that carries a second protective cover on 204 ′, which can also include one or more sheets of masking material. In another aspect (not shown), a first protective cover (including one or more masking sheets) on one of the main surfaces of the pane and a second protective cover (also on the other main surface of the pane) 1 or two or more masking sheets) is provided.
[0052]
FIG. 4 is a perspective view of an assembly 300 in accordance with an exemplary embodiment of the present invention. The assembly 300 also includes an IG unit 336 having a masked first pane 302A. The illustrated protective cover 320 is disposed over the masked portion 322 of the first surface 304 of the first pane 302A. In the embodiment of FIG. 4, the protective cover 320 includes a plurality of strips 330 of masking material that extend substantially parallel across the first surface 304. More particularly, the strip of masking material in this embodiment extends across the length of the pane surface 304. The surface 304 also has an unmasked apron 324 between the complete outer periphery 326 of the protective cover 320 and the complete outer periphery 328 of the first pane 302A. If desired, the outer surfaces 304, 304 ′ of both panes 302A, 302B can be masked.
[0053]
Several embodiments of the present invention have been described in which generally parallel masking strips are provided on the major surface of the pane. However, the present invention is in no way limited to the configuration of parallel masking strips. This can be understood with reference to FIG. FIG. 5 is a perspective view of an assembly 500 according to another aspect of the present invention. The illustrated assembly 500 includes a protective cover 520 disposed on the first surface 504 of the first pane 502A of the IG unit 536. In this embodiment, the protective cover 520 includes a first horizontal strip 570A and a second horizontal strip 570B. The protective cover 520 includes a first vertical strip 572A and a second vertical strip 572B. As can be appreciated, the first vertical strip 572A, the second vertical strip 572B, the first horizontal strip 570A, and the second horizontal strip 570B together form a protective cover 520 having an outer periphery 526 and an outer periphery 564.
[0054]
In the embodiment of FIG. 5, the first surface 504 of the first pane 502A has an unmasked central most portion 514 bounded by the inner periphery 564 of the protective cover 520. In this aspect, the first surface 504 of the first pane 502A has an unmasked apron that extends between the complete outer periphery 526 of the protective cover 520 and the complete outer periphery 528 of the first pane 502A. Thus, the bead of the fitting compound is directly bonded to the unmasked apron 522. The protective cover 520 is sized to protect the portion of the first surface 504 proximate to the sash or frame (not shown) where the IG unit 536 is to be installed (eg, during sash or frame painting) Formed and positioned.
[0055]
In all aspects of the invention, the protective cover (which can include one or more masking sheets) can have at least one tab or extension that facilitates removal of the masking material. For example, FIG. 6 is a perspective view of an assembly 400 according to such an embodiment. The assembly 400 includes a pane 402 having a masked first surface 404. The illustrated protective cover 420 is disposed across the first surface 404 of the pane 402. The protective cover 420 includes a first strip 430A that includes a masking support 432, and an optional masking adhesive 434 disposed on the first surface 406A of the masking support 432. In FIG. 6, a first tab 458A is included as can be seen. More particularly, the first tab 458A includes a first portion 460 of the masking support 432 that is folded to overlap the second portion 462 of the masking support 432. Thus, the optional masking adhesive 434 that covers the first portion 460 is adhered to the optional masking adhesive 434 that covers the second portion 462. As illustrated, the protective cover 420 also includes a second strip 430B, a third strip 430C, and a fourth strip 430D. Thus, the protective cover in this aspect (or in any other aspect) advantageously includes at least four adjacent overlapping masking strips. In the embodiment of FIG. 6, the second strip 430B, the third strip 430C, and the fourth strip 430D include a second tab 458B, a third tab 458C, and a fourth tab 458D, respectively.
[0056]
In other embodiments, the protective cover consists of a single sheet of masking material. In this embodiment, a single tab or extension is provided at the required location (eg, ambient location) on the protective cover. Optionally, a plurality of tabs or extensions can be provided at a required position (eg, a peripheral position) on the protective cover. Regardless of whether the protective cover is made of one or more pieces of masking material, each tab or extension can be integral to the protective cover or can be configured separately and attached to the protective cover Will be understood.
[0057]
In many cases, the drawings of this disclosure show a monolithic pane or IG unit. However, although a given drawing may show one or the other (ie, each drawing shows a monolithic pane or IG unit), the masking configuration described with reference to each drawing may be changed to a monolithic pane or IG unit. It should be understood that it can be applied. For example, FIGS. 1 and 6 show monolithic panes, but the masking configuration described with reference to those drawings can be applied to the IG unit. Similarly, FIGS. 2 to 5 show the IG unit, but the masking configuration described with reference to these drawings can be applied to the monolithic pane.
[0058]
Some embodiments of the present invention include the following steps: providing a monolithic pane or IG unit; and a protective cover of removable masking material on at least a portion of one major surface of the pane or IG unit (eg, major Apply on the part). Removable masking material is preferably applied as soon as possible rather than immediately before painting or otherwise finishing surrounding sashes, frames, walls, etc. (Panels or IG units are, for example, building walls) This finish can be carried out after being installed in). However, each aspect of the present invention involves applying one of the disclosed masking configurations to a pane or IG unit already installed in the building wall.
[0059]
Certain methods of the present invention include the following steps: providing a plurality of monolithic panes; delivering the panes to an IG unit assembly facility; and applying removable masking material to the outer major surface of each IG unit. After that, the IG unit leaves the assembly equipment. In this method, masking material is applied to the assembly line of the IG unit assembly facility. In some cases, the masking material includes a plurality of overlapping masking strips, which preferably cover the major surface of the pane surface. The masked IG units are then transported to a building site (eg, a construction site) or other location, where the masked IG units are installed at their final location (eg, a building wall). Optionally, the masked IG unit can transport the frame to a frame assembly facility, where the masked IG unit is incorporated into the sash and / or frame. Either way, the masked IG units can be bundled (eg, packaged for transportation and / or pallet, crate, or glass rack, as described in the following patents): (US Pat. No. 6,102,206, the entire teachings of which are hereby incorporated by reference).
[0060]
Some aspects of the invention include a fitting assembly that attaches a masked monolithic pane or masked IG unit to a frame. Masked panes or IG units can be placed in a variety of different types of frames. The term “frame” as used herein is any structure to which a monolithic pane or IG unit can be attached (eg, sash, frame, frameless for windows, doors, skylights, and others). It should be understood to mean inset or other). Most conventional frames are configured to receive at least one edge (and usually all edges) of a pane or IG unit. In some embodiments, the frame is fitted to the pane or IG unit in a generally vertical configuration (eg, a window or door). In other embodiments, the frame is generally adapted to hold the pane or IG unit in a horizontal configuration (eg, skylight). As will be described later, the size, shape, and positioning of the protective cover are preferably selected to accommodate the required installation in the frame.
[0061]
The present invention provides a number of particularly advantageous masking configurations, including placement of a masked monolithic pane or IG unit into a frame. These masking configurations can be utilized in embodiments where the protective cover consists of a single sheet of masking material as well as in embodiments where the protective cover includes multiple sheets of masking material (eg, overlapping strips). Thus, in the description of the masking configuration below, it should be understood that the protective cover can take the form of one or more sheets of masking material.
[0062]
When attaching a masked monolithic pane or masked IG unit to the frame, it is advantageous that the peripheral portion of the protective cover extends at least slightly below the frame. This ensures that paint and others cannot easily reach the pane. At the same time, it may be optimal that the peripheral edge of the protective cover does not engage with the fitting compound between the frame and the pane. This ensures that the masking material does not adhere to such an inlaying compound. In all cases, it can be difficult to prevent the edges of the protective cover from engaging the mating compound anywhere under the frame. However, it is preferred that the protective cover be configured so that the edge of the protective cover does not extend to any major extent under the fitting compound. This ensures that the masking material does not become stubbornly trapped under the fitting compound. As previously described, when such masking material is pulled away from the pane, the embedded compound may be damaged if the embedded compound is sealed to a major degree over the masking material.
[0063]
In one aspect of the invention, a transparent pane is provided having a protective cover disposed over an overly masked portion of the pane surface. The pane is sized and shaped for mounting within a frame configured to receive at least one edge of the pane. The excessive masked portion of the pane surface has a larger area than the pane surface itself. That is, the masking material does not completely cover the pane surface. However, the overmasked portion has a larger area than the exposed central portion of the pane surface that remains uncovered by the frame when the glazing is attached. Thus, the protective cover in this embodiment is deliberately configured to extend at least slightly below the frame. Preferably, the overmasked portion has a significantly larger area than the exposed central portion (or “visible area”) so that paint and others do not easily reach the pane.
[0064]
In this embodiment, the pane may have an unmasked apron between the outer periphery of the protective cover and the outer periphery of the pane. The unmasked apron preferably extends along all sides of the pane surface so that the complete perimeter of the pane surface is not masked. Optimally, the unmasked apron has a width W along all sides of the pane surface, which is smaller than the frame overlap dimension OD in which the opposing surface 93 of the frame 90 extends above the pane surface. . This leaves all the surrounding edges 21 of the protective cover hidden under the frame. At the same time, it is preferred that the protective cover does not extend under the frame so that it is sealed (and possibly optimally engaged) under the fit material between the frame and the pane.
[0065]
This is perhaps best understood with reference to FIG. 7A. In FIG. 7A, the masked IG unit 36 is shown attached to the frame 90. This drawing depicts one edge of masked pane 2A received in frame 90. FIG. However, it will be understood that the IG unit 36 can be mounted so that all edges of each pane are received in 90. Moreover, the frame 90 can be adapted to carry a selectively masked monolithic pane (ie, the width of the inset channel is configured to accept a monolithic pane rather than multiple pane IG units). can do).
[0066]
In the embodiment of FIG. 7A, the protective cover 20 can be sized, formed and positioned such that at least one peripheral side portion 23 of the protective cover 20 extends substantially below the opposing surface 93 of the frame 90. preferable. In this way, the protective cover in this manner is systematically configured so that at least one peripheral edge 21 of the protective cover is hidden under the frame. More particularly, the peripheral edge 21 is preferably positioned between the innermost portion of the mating compound 70 and the inner edge 98 of the frame 90. For example, the protective cover can be configured such that at least one of the peripheral side portions 23 of the protective cover extends a predetermined distance X below the opposing surface 93 of the frame 90. If this distance X (whether or not determined in advance) is at least about 1/16 inch, the necessary degree of protection can be achieved for paint and other finishing materials. For example, a distance X of about 1/8 inch will give excellent results for multiple frame assemblies.
[0067]
In certain particularly preferred embodiments, the protective cover 20 is sized, formed, and positioned so that all the peripheral side portions 23 of the protective cover 20 extend significantly below the opposing surface 93 of the frame 90. For example, the protective cover can be configured such that all of the peripheral side portions 23 of the protective cover extend a predetermined distance X below the opposing surface of the frame. As noted above, this distance X (whether or not determined in advance) is advantageously at least about 1/16 inch, and a distance X of about 1/8 inch is suitable for multiple frame assemblies. Will give excellent results. This aspect provides exceptional masking protection because each peripheral edge 21 of the protective cover 20 is hidden under the frame 90.
[0068]
In FIG. 7A, the protective cover 20 does not extend far below the peripheral side portion 23 of the frame 90 such that the fitting compound 70 engages between the frame 90 and the pane 2A. As described above, this ensures that the masking material does not adhere to the fitting compound. While this may be ideal, in some embodiments the masking material may extend far below the frame so that it contacts (eg, is adjacent to) the mating compound. In such an embodiment, it is preferred that the masking material does not extend so far as to become sealed under the mating compound. As described above, this ensures that when the masking material is ultimately removed from the pane, the masking material will not become trapped under the mating compound so that the mating compound is not damaged. . Although critically less preferred, it would be possible to configure the protective cover such that the protective cover is somewhat sealed under the fit compound. However, since it remains firmly sealed under the fitting compound (because it may be necessary to cut the surrounding part of the protective cover and leave it between the pane and the fitting compound) all In some cases, it is preferred that the protective cover does not extend to a major extent under the fitting compound. Preferably, all of the peripheral side portions 23 extend significantly below the opposing surface 93 of the frame 90, but do not become stubbornly trapped under the fit material between the frame and the pane (probably The protective cover 20 is sized, formed and positioned (not optimally engaged).
[0069]
In certain embodiments, the protective cover is sized, formed and positioned such that the single peripheral edge portion 23 of the protective cover extends at least slightly below the opposing surface 93 of the frame 90. For example, the protective cover can be configured such that only the lower peripheral side portion of the protective cover (ie, the peripheral side portion adjacent to the lower leg of the frame) extends below the opposing surface of the lower leg of the frame. Paint and other finishing materials can drip toward the bottom of the masked pane, increasing the likelihood of contaminating the lower boundary of the pane. Thus, it would be particularly beneficial if the lower part of the protective cover extends at least slightly below the frame. Optionally, the protective cover can be configured such that only the peripheral upper side portion of the protective cover (ie, the peripheral side portion adjacent to the upper leg of the frame) extends below the opposing surface of the upper leg of the frame. . For example, the opposing surface 93 of the upper leg of the frame 90 can be configured to properly bear against the top of the protective cover. This is particularly beneficial for applications where the protective cover can slip over time (for example, if the protective cover stays on the pane for a long time, the protective cover is exposed to harsh environmental conditions). When applied, the protective cover is applied with or without a weak adhesive and / or the protective cover is formed from a heavy masking material).
[0070]
The fitting assembly 99 depicted in FIG. 7A includes an IG unit 36 and a very basic frame 90 for mounting the IG unit 36. The illustrated frame 90 includes a base 95 (base mounting surface 95S) and two shoulders 96, 96I (opposing mounting surfaces 93), which together receive a mating channel that receives the edge of the IG unit 36. Determine. As previously described, the frame 90 can be adapted to receive a masked IG unit (not shown) or a masked monolithic pane. The shoulders 96, 96I of the frame 90 provide a fit stop that holds the IG unit 36 in place. In the illustrated frame embodiment, one illustrated frame shoulder 96I is integral to the frame base 95, while the other shoulder 96 is configured separately. In FIG. 7A, masking material is provided only on pane 2A. However, the masking material can be selectively or additionally disposed on the second pane 2B.
[0071]
The frame 90 can be provided in a number of different forms. For example, the frame 90 may have a tubular configuration (eg, formed from metal, alloy, plastic, and others) or it may include wood or the like covered with vinyl. In particular, the design of the separately configured shoulder 96 will tend to vary from manufacturer to manufacturer. In some cases, the frame 90 may include a fitting collar (not shown) that snaps or slides into the position occupied by the shoulder 95S of another frame in FIG. 7A. In such a case, a fitting compound may or may not exist between the collar frame 955 and the outer surface of the adjacent pane. If such a fitting compound is not applied, it will extend further by a distance X below the inner edge 98 of this collar frame 955 than would be desirable if a fitting compound was applied between this collar frame 955 and the pane. It may be desirable to construct a masking material. Various other frame designs are possible and will fall within the scope of the invention.
[0072]
With continued reference to FIG. 7A, the illustrated assembly 99 includes a bead of mating compound 70 located between the frame 90 and the edge region of the panes 2A, 2B. In FIG. 7A, the mating compound 70 is between the outer surfaces 14, 14 'of the panes 2A, 2B and the opposing mounting surfaces 95 of both frames 90, as well as the base mounting surface 95S of the frame 90 and the peripheral edge of the IG unit. Located between. However, the method of applying the inset compound 70 will vary from manufacturer to manufacturer. For example, FIGS. 7B and 7C illustrate how the inset compound 70 is applied only between the frame and one outer surface of the pane.
[0073]
Referring to FIG. 7B, the inset compound 70 is located between the frame 90 and the outer surface 14 of the pane 2A, but not between the frame 90 and the outer surface 14 ′ of the second pane 2B. In FIG. 7B, the masking material is provided only on the first pane 2A. However, in some cases, masking material can be additionally or selectively provided on the second pane 2B. In such a case, the masking material can typically be pulled without difficulty from between the frame shoulder 95S and pane 2B of the frame, but in FIG. It will be understood that space is not depicted. This will become apparent in light of the following description of the installation of panes or IG units in the frame 90. In FIG. 7B, the plug compound 70 is located between the peripheral edge of the IG unit 36 and the base mounting surface 95S of the frame 90, but this is by no means a requirement. For example, FIG. 7C illustrates an embodiment in which the inset compound 70 is not applied between the peripheral edge of the IG unit and the base mounting surface 95S of the frame 90.
[0074]
By referring to FIGS. 7A to 7C, it can be understood that the IG unit can be attached to its predetermined position only by adhesion of the fitting compound. That is, if the fit compound bond breaks, the IG unit will remain unattached in the fit channel. It can also be seen that the adhesion of the masking material to the glass can be substantially weaker than the fit compound to the glass. Thus, leaving some masking material permanently under the mating compound is especially exposed to masked panes against wind loads and periodic water contact (eg rain and other deposits). May be undesirable.
[0075]
Any conventional fitting compound can be used in connection with the present invention. For example, a variety of useful inset compounds are commercially available from known suppliers such as Dow Corning Corporation (Midland, Michigan, USA).
[0076]
Methods for installing monolithic panes or IG units in a frame are well known in the art. Referring to FIG. 7A, the bead of the mating compound 70 can be applied to the mating channel before attaching the shoulder 90 of the frame 90 and another frame. The edges of the pane or IG unit (which is preferably already masked, but not necessarily required) can then be fitted against the integral shoulder 96I of the frame 90. Finally, another shoulder 96 can be attached to the base 95 of the frame 90, thus securing the edge of the monolithic pane or IG unit within the fit channel. Variations on this process will be apparent to those skilled in the art.
[0077]
As described above, a masked monolithic pane or a masked IG unit can be incorporated into the sash. For example, FIG. 8 is a perspective view of an embodiment in which the assembly of FIG. 4 is incorporated into a sash 354 (eg, a window sash). In the assembly of FIG. 8, the sash 354 is positioned over the IG unit 336, but a monolithic pane can also be placed in the sash in this way. In this aspect, it can be appreciated that the sash 354 includes a plurality of inner edges 356. As described above with respect to FIG. 7, the protective cover 320 can have a variety of different configurations. For example, the protective cover 320 (which is depicted as including a plurality of overlapping masking strips) is just aligned to the inner edge 356 of the sash 354 so that the outer periphery 326 of the protective cover 320 is aligned with the edge 356 of the sash 354. It can be configured to extend. Optionally, the protective cover 320 can be configured to extend at least somewhat below the inner edge 356 of the sash 354. In such embodiments, the protective cover can be a single sheet of masking material, as illustrated, or can include multiple masking strips. Preferably, the protective cover 320 is under the inner edge 356 of the sash 354 so that it is firmly sealed under the mating compound (not shown) between the sash and the edge area of each pane. Does not extend so far.
[0078]
FIG. 9 is a perspective view of an assembly 800 according to another exemplary embodiment of the present invention. The illustrated assembly 800 includes a sash assembly 801 that is installed in a wall 867 of a building 868. The sash assembly 801 includes an IG unit and a sash 854. The masked pane of the IG unit 836 (which can carry a single masking sheet as described above, or multiple masking strips as shown) can be a wall 867, sash 854, or It can be appreciated that it will be protected against becoming contaminated with paint or other finishing materials that can be applied to other nearby structures. Optionally, the pane or IG unit can be installed directly in the frame without using any sash.
[0079]
The present invention provides a simplified process for applying masking material to panes of varying size. For example, a masking material supply (eg, roll) can be selected such that the width of the masking material corresponds to a known minimum pane size. In one aspect, a roll of masking material is provided having a width corresponding to (eg, slightly smaller than) the smallest known pane size. Thus, when trying to mask the smallest pane, the entire protective cover can be formed with a single sheet of masking material (ie, a single sheet of masking material can be applied to the entire masked portion of the pane). Can be covered). On the other hand, when attempting to mask a larger pane, a protective cover can be formed by applying multiple sheets of masking material in an overlapping manner as described herein. The number of sheets to be applied and the masking overlap dimensions of the sheets are selected to achieve the required coverage area of the pane surface. Regardless of whether one or more sheets of masking material are applied, the length of each sheet is preferably selected to correspond to (eg, slightly less than) the length of the pane.
[0080]
Thus, it can be appreciated that a masking material supply can be advantageously used to mask a number of different sized panes. For example, the method of the present invention avoids the need to store rolls of masking material of different widths to accommodate different sized panes. In fact, it is only necessary to store a roll of masking material having a single width corresponding to the known minimum pane size. Moreover, in an embodiment where an unmasked apron remains on the pane surface, the masking material can be applied without the need to cut or otherwise positively remove the protective cover border. This significantly improves time, labor and monetary efficiency. It also prevents damage that may otherwise occur to the pane during removal (eg, cutting) of the boundary portion of the masking material. This is particularly advantageous when the masked surface supports an external coating. Such coatings are subject to wear by cutting wheels and others.
[0081]
FIG. 10 is a flowchart illustrating an exemplary method according to the present invention. The method of FIG. 10 includes providing a monolithic pane or IG unit to be masked. For example, this step includes the step of preparing an IG unit having a first outer surface. The method of FIG. 10 also includes providing a masking calculator with the required width of the masked area. For example, a monolithic pane or IG unit can be moved into the masking station. In this masking station, the operator can detect or enter the dimensions of the pane or unit. The controller associated with the masking station can use this dimension to determine the masked area corresponding to the pane or IG unit having that dimension.
[0082]
The method of FIG. 10 also includes the step of providing a masking material having a certain width. In a preferred method, the width of the masking material is selected to correspond to the width of the masked area of the small monolithic pane or IG unit. In this preferred method, small panes or IG units can be masked by applying a single sheet of masking material to the surface of the masked monolithic pane. Pane and IG units with larger dimensions than small panes or IG units can be masked with multiple strips of masking material.
[0083]
The method of FIG. 10 also includes determining an optimal number of strips. As mentioned above, the optimal number of strips may be 1 for small monolithic panes or IG units. Multiple strips may be desirable for other panes and IG units. In addition, the method of FIG. 10 includes a step of calculating a masking overlap dimension D. Using the masking material width and the optimum number of strips, a useful overlap dimension D can be calculated to achieve the required coverage of the masked area.
[0084]
FIG. 10 also includes applying an optimal number of strips. For example, an optimal number of strips of masking material can be applied to the first outer surface of the monolithic pane or IG unit. In one method according to the invention, the strips are applied in a sequential manner and each subsequent strip partially overlaps the preceding strip with a calculated masking overlap dimension D.
[0085]
It should be understood that various aspects of the window assembly can be used without departing from the spirit and scope of the present invention. The window assembly can include, for example, a monolithic pane, and / or an insulating glass unit, and / or a window sash. In certain embodiments, the described method includes transporting the window assembly to a building site. The methods also include installing the window assembly (eg, in a window frame or the like). Installing the window assembly may include attaching the window assembly to the frame, as described above.
[0086]
After installation, the sash or other surrounding structure near the frame can be painted or otherwise finished. During such processing, the protective cover hides the masked surface of the pane, thereby preventing inadvertent application of paint and others to this surface. When installation, painting, and other finishes are complete, the protective cover can be removed from the pane surface. Thus, the protective cover protects the masked surface of the pane during transport, installation, finishing (eg, painting), and even during manufacture (eg, assembling the pane or IG unit into a sash). Can be protected.
[0087]
While several forms of the invention have been shown and described, other forms will now be apparent to those skilled in the art. As will be appreciated, the embodiments shown in the drawings and described above are for illustrative purposes only and are not intended to limit the scope of the invention.
[Brief description of the drawings]
[0088]
FIG. 1 is a perspective view of an assembly according to an exemplary embodiment of the present invention.
FIG. 2 is a cross-sectional side view of an assembly according to another exemplary embodiment of the present invention.
FIG. 3 is a perspective view of an assembly in accordance with yet another exemplary aspect of the present invention.
FIG. 4 is a perspective view of an assembly in accordance with yet another exemplary aspect of the present invention.
FIG. 5 is a perspective view of an assembly in accordance with yet another exemplary embodiment of the present invention.
FIG. 6 is a perspective view of an assembly according to an additional exemplary embodiment of the present invention.
FIG. 7A is a cross-sectional side view of an assembly in accordance with yet another exemplary embodiment of the present invention.
FIG. 7B is a cross-sectional side view of an assembly in accordance with yet another exemplary aspect of the present invention.
FIG. 7C is a cross-sectional side view of an assembly in accordance with yet another exemplary aspect of the present invention.
FIG. 8 is a perspective view of an assembly according to yet another exemplary embodiment of the present invention.
FIG. 9 is a perspective view of an assembly according to yet another exemplary embodiment of the present invention.
FIG. 10 is a flowchart of an exemplary method according to the present invention.

Claims (55)

A transparent pane having first and second generally opposing major surfaces, wherein the transparent pane is sized and formed to be attached to a frame configured to receive at least one edge thereof. A transparent pane, wherein the transparent pane has a protective cover disposed on a major portion of the first surface, and the protective cover includes a plurality of strips of masking material. The transparent pane of claim 1, wherein the masking material is transparent. The transparent pane of claim 1, wherein the strips of masking material are arranged in a sequential overlapping manner, with each subsequent strip overlapping a portion of a preceding strip. The transparent pane of claim 3, wherein the strip of masking material extends substantially parallel across the first surface of the pane. The transparent pane of claim 1, wherein the protective cover is disposed substantially over the first surface of the pane. The transparent pane of claim 5, wherein the first surface of the pane has an unmasked apron between the outer periphery of the protective cover and the outer periphery of the pane. 7. A transparent pane according to claim 6, wherein the first surface of the pane is completely masked except for its unmasked surrounding apron. The protective cover is sized, formed and positioned such that when the pane is attached, at least one peripheral side portion of the protective cover extends significantly below the opposing surface of the frame. The transparent pane according to 1. 9. A transparent pane according to claim 8, wherein the peripheral edge portion of the protective cover does not extend so far below the opposing surface of the frame to engage an inlaying compound between the frame and the pane. The protective cover is sized, formed, and positioned such that when the pane is attached, all peripheral sides of the protective cover extend significantly below the opposing surface of the frame. Transparent pane as described in. The transparent pane according to claim 10, wherein the peripheral edge portion of the protective cover does not extend so far below the opposing surface of the frame to engage an inlaying compound between the frame and the pane. The transparent pane according to claim 1, wherein the pane is part of a multi-pane insulating glass unit. A transparent pane having first and second generally opposing major surfaces, wherein the transparent pane is sized and shaped to be attached to a frame configured to receive at least one edge thereof. Has a protective cover disposed over the overmasked portion of the first surface, the protective cover comprising at least one piece of masking material, wherein the overmasked portion of the first surface is the first. A transparent pane having an area smaller than one surface itself, but having an area larger than the exposed central portion of the first surface not covered by a frame when the pane is attached. 14. A transparent pane according to claim 13, wherein an overly masked portion of the first surface has a significantly larger area than the exposed central portion of the first surface. 14. A transparent pane according to claim 13, wherein the protective cover consists of a single sheet of masking material. The transparent pane of claim 13, wherein the protective cover comprises a plurality of strips of masking material. The protective cover is sized, formed and positioned such that when the pane is attached, at least one peripheral side portion of the protective cover extends significantly below the opposing surface of the frame. The transparent pane according to 13. The protective cover is sized, formed and positioned such that when the pane is attached, at least one peripheral side portion of the protective cover extends a predetermined distance below the opposing surface of the frame The transparent pane according to claim 13. The transparent pane of claim 18, wherein the predetermined distance is at least about 1/16 inch. 20. A transparent pane according to claim 19, wherein the predetermined distance is about 1/8 inch. 18. A transparent pane according to claim 17, wherein the peripheral edge portion of the protective cover does not extend so far below the opposing surface of the frame to engage an inlaying compound between the frame and the pane. 14. The protective cover is sized, formed and positioned so that when the pane is attached, all peripheral sides of the protective cover extend significantly below the opposing surface of the frame. Transparent pane as described in. The protective cover is sized, formed and positioned such that when the pane is attached, all peripheral sides of the protective cover extend a predetermined distance below the opposing surface of the frame; The transparent pane according to claim 13. 24. The transparent pane of claim 23, wherein the predetermined distance is at least about 1/16 inch. 25. The transparent pane of claim 24, wherein the predetermined distance is about 1/8 inch. 23. A transparent pane according to claim 22, wherein the peripheral edge portion of the protective cover does not extend so far below the opposing surface of the frame to engage a fitting compound between the frame and the pane. The transparent pane of claim 13, wherein the first surface of the pane has an unmasked apron between the outer periphery of the protective cover and the outer periphery of the pane. 14. A transparent pane according to claim 13, wherein the first surface of the pane is completely masked except for its unmasked surrounding apron. 28. The transparent of claim 27, wherein the first surface of the pane has a polygon with two or more sides, and an unmasked apron extends along at least one side of the first surface. pain. 30. The transparent pane of claim 29, wherein an unmasked apron extends along all sides of the first surface so that the complete perimeter of the first surface is not masked. When the pane is mounted such that all surrounding edges of the protective cover are hidden under the frame, the opposing surfaces of the frame are significantly less than the overlap distance extending over the first surface, the first 31. A transparent pane according to claim 30, wherein the unmasked apron has a width along all sides of the surface. 32. A transparent pane according to claim 31, wherein the peripheral edge of the protective cover is hidden under the frame, but does not engage with a mating compound between the frame and the pane. The transparent pane according to claim 13, wherein the pane is part of a multi-pane insulating glass unit. A transparent pane having first and second generally opposing major surfaces, the transparent pane being attached to a frame in which at least one edge of the pane is received, the transparent pane being masked on the first surface A protective cover disposed on the portion, wherein the first surface has an unmasked apron extending between the outer periphery of the protective cover and the outer periphery of the pane, and the protective cover includes at least one piece of masking material. And a transparent pane that is sized, formed and positioned such that at least one peripheral side portion of the protective cover extends significantly below the opposing surface of the frame. 35. A transparent pane according to claim 34, wherein the peripheral edge portions extend a predetermined distance below opposite surfaces of the frame. 36. The transparent pane of claim 35, wherein the predetermined distance is at least about 1/16 inch. 38. The transparent pane of claim 36, wherein the predetermined distance is about 1/8 inch. 35. The transparent pane of claim 34, wherein the peripheral edge portion does not extend so far below the opposing surface of the frame to engage an inlaying compound between the frame and the pane. 35. A transparent pane according to claim 34, wherein the pane is mounted such that all edges of the pane are received in the frame. 40. The transparent pane of claim 39, wherein the protective cover is sized, formed and positioned such that all peripheral sides of the protective cover extend significantly below the opposing surfaces of the frame. 41. A transparent pane according to claim 40, wherein the peripheral edge portions extend a predetermined distance below opposite surfaces of the frame. 42. The transparent pane of claim 41, wherein the predetermined distance is at least about 1/16 inch. 43. The transparent pane of claim 42, wherein the predetermined distance is about 1/8 inch. 41. The transparent pane of claim 40, wherein the peripheral edge portion does not extend so far below the opposing surface of the frame to engage an inlaying compound between the frame and the pane. 35. A transparent pane according to claim 34, wherein the protective cover comprises a single sheet of masking material. The transparent pane of claim 34, wherein the protective cover comprises a plurality of strips of masking material. The transparent pane of claim 34, wherein the pane is part of a multi-pane insulating glass unit. A fitting assembly including a transparent pane and a frame to which the pane is attached, the transparent pane having first and second generally opposing major surfaces and at least one edge received in the frame. And the transparent pane has a protective cover disposed on the masked portion of the first surface, and the first surface has an unmasked apron extending between the outer periphery of the protective cover and the outer periphery of the pane. The protective cover comprises at least one piece of masking material and is sized, formed and positioned such that at least one peripheral side portion of the protective cover extends significantly below the opposing surface of the frame. A fitting assembly. 49. The fit assembly of claim 48, wherein the pane is mounted such that all edges of the pane are received in the frame. 50. The fit assembly of claim 49, wherein the protective cover is sized, formed and positioned such that all peripheral sides of the protective cover extend significantly below the opposing surfaces of the frame. 51. The fit assembly of claim 50, wherein the peripheral side portions extend a predetermined distance below the opposing surfaces of the frame. Further comprising an inset compound between the frame and the pane, wherein the peripheral portion of the protective cover does not extend so far below the opposing surface of the frame to engage the inset compound; 51. The fit assembly of claim 50. 49. The fit assembly of claim 48, wherein the protective cover comprises a single sheet of masking material. 49. The fit assembly of claim 48, wherein the protective cover includes a plurality of strips of masking material. 49. The fit assembly of claim 48, wherein the pane is part of a multi-pane insulated glass unit.

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