JPH11291406A - Surface material for interior finishing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To retain stainproof characteristics and decorative characteristics for an extended period by providing a printed or colored layer on a surface of a base composed of a synthetic resin, paper or cloth, and laminating thereon a multi-layered synthetic resin film having an antistatic layer as an interlayer applied by dry lamination or the like. SOLUTION: A surface material W used for an interior material or the like of a building is formed by laminating a printed or colored layer B, as necessary, on one side of a base A composed of a synthetic resin, paper, cloth or the like, and laminating on the other side a multi-layered synthetic resin film C composed of a three-layered laminated surface material. The film C has an antistatic layer 3 as an interlayer between an innermost layer 1 contacting with the layer B and an outermost layer 2 by dry lamination or the like. The layer 3 is a polyolefin or a polystyrene layer, wherein 10 wt.% or more of a composition composed by mixing two or more ionomers neutralized by an alkaline metal, which contains potassium partially or entirely. The layer 1 and 2 are a synthetic resin having good see-through characteristics without containing an antistatic agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior surface material made of a multilayer synthetic resin film.

[0002]

2. Description of the Related Art Vinyl chloride, polyurethane and other synthetic resin films are often used as surface materials for interior wall materials of buildings and interior materials of automobiles.

[0003]

However, the films used as the surface material used in the conventional inner wall material and interior material have a disadvantage that they are easily charged with static electricity, which is a characteristic of most synthetic resin films. is there.

However, when a conventional synthetic resin film is used as a surface material for an inner wall of a building, dust in the air is attracted by static electricity, which is not preferable in appearance.

[0005] In particular, even if the surface of the base material of the inner wall material is colored or printed, and a synthetic resin film having good transparency is laminated on the surface to obtain a decorative effect, the surface of the synthetic resin film becomes dirty due to electrification. Or if dust adheres,
The effect is reduced.

Therefore, as a measure for protecting the surface of the inner wall material from contamination and maintaining the cleanliness, it is important to prevent static electricity generated on the surface.

[0007] In a commonly used method, an attempt has been made to add and mix a small amount of a kneading type antistatic agent into a synthetic resin used as a surface material.

One of the kneading type antistatic agents is a surfactant, that is, an organic antistatic agent.
Another one is carbon or other metal-based fine particles, that is, inorganic antistatic agents.

This surfactant-type antistatic agent is mixed with a synthetic resin at a concentration of several thousand ppm so that a part of the surfactant in the synthetic resin is changed with the lapse of time. It exudes to the surface of the film, thereby providing an antistatic effect.

On the other hand, as an inorganic antistatic agent, by adding these metal-based fine particles at a concentration of several percent, a part of the fine particles protrude into the skin portion of the surface film to give an antistatic effect.

[0011] However, the above two methods of antistatic measures have the following negative side, although they have an antistatic effect on the surface of the synthetic resin film, and are often used as inner wall materials and interior materials. It becomes a problem.

That is, the organic surfactant type antistatic agent oozes out over time on the surface of the film of the interior material surface material, and forms a very thin film of the surfactant.

For this reason, when used as an inner wall of a building, for example, paintings, calendars, photographs, and the like are often attached for decoration and exhibition. At that time, stick it to the inner wall using an adhesive tape or starch paste.

However, due to the coating of the antistatic agent on the inner wall surface, the adhesion may be insufficient or the film may peel off over time.

[0015] Further, the surfactant type antistatic agent has a drawback that it tends to evaporate and disappear over a long period of time, and that the antistatic effect is likely to be reduced.

Further, by adding a few percent of an inorganic carbon or metal-based fine particle particle kneading type antistatic agent to the film, the transparency of the film as the original surface material is reduced, or , Making it opaque and deteriorating as an interior surface material,
There is a problem that the effect of coloring is remarkably inferior.

Further, there is also a problem that the inorganic fine particles protrude from the film surface, so that the film becomes uneven, the surface gloss is impaired, and the decorative effect is reduced.

The present invention has been made in view of the above circumstances, and has as its object to provide an interior surface material capable of preventing contamination and maintaining decorativeness over a long period of time.

[0019]

Means for achieving the above object is to provide a printing or coloring layer on the surface of a substrate made of a synthetic resin film, paper or cloth, and dry lamination on the upper surface thereof. , An interior surface material in which a multilayer synthetic resin film having an antistatic layer provided on an intermediate layer by wet lamination or thermal lamination is laminated.

Further, a composition in which the antistatic layer of the multilayer synthetic resin film having the antistatic layer applied to the intermediate layer is obtained by mixing two or more ionomers partially or wholly neutralized with an alkali metal containing potassium. Made of polyolefin, polyamide or polystyrene containing 10% by weight or more of the substance.

Further, one layer adjacent to the intermediate layer of the multilayer synthetic resin film having the antistatic layer formed on the intermediate layer and the other layer adjacent to the opposite surface via the intermediate layer are made of polyethylene, polypropylene, ethylene vinyl. An alcohol copolymer, polybutene, polyethylene terephthalate, polyamide, polystyrene, polycarbonate, polyacrylate, polyurethane and at least one of these copolymers are used, and the layer is made of any of the above-mentioned polymers. A multilayer synthetic resin film composed of one or more layers is laminated on the substrate.

Further, in a multilayer synthetic resin film having an antistatic layer provided on an intermediate layer, the thickness of the intermediate layer is 2 μm to 5 μm.
The thickness of the outer layer adjacent to the intermediate layer is 2 μm to 30 μm, preferably 10 μm to 250 μm.
A multilayer synthetic resin film of 10 μm to 150 μm is desirably laminated in the range of 0 μm.

[0023]

An embodiment of the surface material for interior materials according to the present invention will be described below with reference to the drawings.

In FIG. 2, W is a surface material used as an interior material or an inner wall material of a building. A printing or coloring layer is formed on one side of a base material A made of synthetic resin, paper, cloth, or the like, if necessary. B, and a multilayer synthetic resin film C composed of a three-layer laminated surface material is laminated on the other side of the printed or colored layer B.

The multi-layer synthetic resin film C is formed by dry lamination, wet lamination, heat lamination, or the like to form an antistatic layer between the innermost layer 1 adjacent to the printed or colored layer B and the outermost layer 2 located on the surface. Three are arranged.

The intermediate layer 3 of the antistatic layer contains 10% by weight of a composition obtained by mixing two or more ionomers partially or wholly neutralized with an alkali metal containing potassium.
A layer of polyolefin, polyamide, or polystyrene contained above.

Further, the thickness of the intermediate layer 3 is 2 μm to 500 μm.
The range of μ is desirably 10 μ to 250 μ.

The innermost layer 1 and the outermost layer 2 are made of a synthetic resin containing no antistatic agent and have good transparency, such as polyethylene, polypropylene, and the like.
It is composed of a polymer material of at least one of ethylene / vinyl alcohol copolymer, polybutene, polyethylene terephthalate, polyamide, polystyrene, polycarbonate, polyacrylate, polyurethane and a copolymer thereof.

The thickness of the outermost layer 2 adjacent to the intermediate layer 3 is in the range of 2 μm to 300 μm, preferably 1 μm.
0 μ to 150 μ.

In general, as shown in FIG. 1A, considering a synthetic resin film that easily generates static electricity,
(A) is considered as an insulator. When an electric field is applied from the outside, + and-are charged on the front and back, and the + and-on the front are evenly balanced, and the synthetic resin film is charged. Becomes

Since it is an insulator, + and-ions do not move inside the layer.

Next, consider a three-layer laminated film C as shown in FIGS. 1 (b-1) to (b-4).

At this time, the intermediate layer 3 is provided with a conductive layer, and the adjacent outer layers 1 and 2 are provided as insulating layers. When an electric field is applied to the laminated film C from the outside, + and-are charged on the front and back surfaces of the surface layer, and the intermediate layer 3 is a conductive layer. , The surface insulating layer 2 and the back insulating layer 1 are independently charged.
As shown in (b-2), the surface layer 2 and the back layer 1 and the intermediate layer 3
The same amount of charge is applied to the boundary portions of.

However, since the intermediate layer 3 is in contact with the surface layer 2 and the back layer 1, as shown in FIG.
Ions move from the boundary portion to the other boundary portion in the intermediate layer 3 which is a conductive layer, and if the charge amount of each of the boundary layers is the same, each charge of the boundary layer is neutralized. As a result, the charge amount becomes zero, and as a result, the charge on the front and back surfaces of the laminated film C becomes zero.

That is, if the intermediate layer 3 is a conductor and the surface and back layers are insulators, no charging occurs as shown in FIG. 1 (b-4).

Next, some embodiments of the present invention will be described.

Embodiment 1 Outer layer 2 by extrusion casting
10μ of polypropylene mixed with 20% by weight of an ionomer containing potassium in the middle layer 3
And, a three-layer laminated film of polypropylene 20μ is formed on the inner layer 1, the surface of the inner layer is subjected to corona treatment, and then the gravure printing is performed on the treated surface. An inner wall material was obtained by wet lamination.

Embodiment 2 FIG. Outer layer 2 by extrusion casting
10 μm of polyethylene elastomer mixed with 20% by weight of an ionomer containing potassium in the intermediate layer 3 and 20 μm of polyester elastomer in the inner layer 1.
After making a three-layer laminated film of the above, the inner layer surface is subjected to corona treatment, then gravure printing is performed on this treated surface, and in order to make this laminated film a surface material, the printed surface and a paper base material are wet-laminated to form an inner wall material. did.

Embodiment 3 FIG. Outer layer 2 by extrusion casting
10 μm polyamide mixed with 20% by weight of an ionomer containing potassium in the intermediate layer 3 and polyurethane elastomer 20 in the inner layer 1.
After making a three-layer laminated film of μ, corona-treating the inner layer surface, performing gravure printing on the treated surface, and wet-laminating the printed surface and paper base material to make the laminated film a surface material. Material.

Comparative Example 1 50 μm of a polypropylene resin was prepared by an extrusion casting method, a corona treatment was performed on one surface, gravure printing was performed on the treated surface, and the printed surface and a paper substrate were wet-laminated to form an inner wall material.

Comparative Example 2 By an extrusion casting method, 2500 ppm of a surfactant type antistatic agent was mixed and added to a polypropylene resin to form a 50 μm film. One side was corona treated, gravure printed, and wet-laminated with the printed surface and the paper substrate to form an inner wall material.

Comparative Example 3 By an extrusion casting method, 2.5% by weight of carbon fine particles were mixed and added to a polypropylene resin to form a 50 μm film. One surface was subjected to corona treatment, the treated surface was subjected to gravure printing, and the printed surface and a paper substrate were wet-laminated to form an inner wall material.

Next, the inner wall materials prepared in the examples and the comparative examples were evaluated with respect to frictional voltage, attenuation factor, appearance, and adhesiveness of glossy paper.

[0044]

"Measurement method of friction, electrification, and decay time" Each sample was cut into a width of 200 mm, rubbed 20 times with a cotton cloth No. 3, and subjected to a static electricity meter KSD-010 manufactured by Kasuga Electric Co., Ltd.
3 and measured at a distance of 5 cm.

Evaluation ○ Good △ Somewhat bad × Very bad From the results shown in Table 1, since the inner wall material made of a laminated film having an ionomer containing potassium as an intermediate layer as a surface material has a weak triboelectric charge, the appearance is very low. Was good over time, and the adhesiveness of the tape and the like was semipermanently good.

[0047]

According to the present invention having the above-mentioned structure, the inner wall material and the interior material having a laminated film as a middle layer having a polyolefin, polyamide or polystyrene layer containing at least 10% by weight of an ionomer containing potassium as an intermediate layer are described. ,
Semi-permanently free of dirt and dust, good appearance and gloss,
Paintings, calendars, photographs, and the like may be adhered to the surface with glue or adhesive tape, and have a unique effect that they do not peel off for a long time.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of antistatic in an embodiment of an interior surface material according to the present invention.

FIG. 2 is an enlarged sectional view of an embodiment of the interior surface material according to the present invention.

[Explanation of symbols]

 A base material B printed or colored layer C multilayer synthetic resin film 1 innermost layer 2 outermost layer 3 intermediate layer

Claims (4)

[Claims] 1. A multi-layer composition comprising a printing or coloring layer provided on the surface of a substrate made of a synthetic resin film, paper or cloth, and an antistatic layer applied to the intermediate layer by dry lamination, wet lamination or thermal lamination on the upper surface. An interior surface material characterized by laminating resin films. 2. A composition in which an antistatic layer of a multilayer synthetic resin film having an antistatic layer applied to an intermediate layer is obtained by mixing two or more ionomers, some or all of which are neutralized with an alkali metal containing potassium. 2. The interior surface material according to claim 1, wherein the interior surface material is made of polyolefin, polyamide or polystyrene containing at least 10% by weight of a substance. 3. A multilayer synthetic resin film having an intermediate layer provided with an antistatic layer, wherein one layer adjacent to the intermediate layer and the other layer adjacent to the opposite surface via the intermediate layer are made of polyethylene, polypropylene, ethylene vinyl. Alcohol copolymer,
It is composed of a polymer material of at least one of polybutene, polyethylene terephthalate, polyamide, polystyrene, polycarbonate, polyacrylate, polyurethane and copolymers thereof, and the layer is made of one or more layers using any of the above polymers The interior surface material according to claim 1, wherein a multilayer synthetic resin film made of the following is laminated on the base material. 4. A multilayer synthetic resin film having an intermediate layer provided with an antistatic layer, wherein the thickness of the intermediate layer is in the range of 2 μm to 500 μm, preferably 10 μm to 250 μm, and the thickness of the outer layer adjacent to the intermediate layer. 2. The interior surface material according to claim 1, wherein a multilayer synthetic resin film having a thickness in the range of 2 to 300 .mu., Preferably 10 to 150 .mu., Is laminated.