JP2000326433A - Thermal insulation decorative sheet and thermal insulation decorative member - Google Patents

Abstract

(57) Abstract: A heat insulating material having a heat insulating layer of a specific structure provided on the inner surface or a heat insulating sheet thereof, especially when laminated on a metal substrate and used for an exterior, sufficient heat insulating makeup. A heat insulating decorative sheet and a heat insulating decorative member capable of minimizing a secondary influence due to a heat change given from the outside of a material. A decorative heat insulating sheet having a decorative layer, a heat insulating layer formed on the back side of the decorative layer by packing a porous body with a gas barrier sheet, and evacuating the inside of the package, and the heat insulating decorative sheet. A heat insulating decorative member comprising a metal substrate provided directly or via another layer on the side of the heat insulating layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative heat insulating sheet provided with a heat insulating property to a decorative sheet used for surface finishing of buildings and the like, and to a heat insulating decorative member obtained by providing a metal substrate on the decorative heat insulating sheet.

[0002]

2. Description of the Related Art Heretofore, decorative sheets have been used in which a resin sheet such as polyvinyl chloride or polyolefin is used as a base material layer, and a decorative sheet is formed on the base sheet by printing, embossing, or the like. No. 28-5036, and Japanese Patent Publication No. 58-14312).

[0003] Such decorative sheets are laminated on the surface of various base materials and are widely used as interior materials and exterior materials for buildings.

[0004]

However, when such a decorative sheet is laminated on a base material having a high thermal conductivity such as a metal base material, there is a problem in terms of heat insulation. Was desired.

That is, this kind of base material has a high thermal conductivity, and when heated by the infrared rays of the sunlight inserted in summer, the heat easily flows into the room, and the energy (electric power etc.) consumption for cooling increases. At the same time, the room temperature during non-cooling is further increased. Conversely, in winter, heat tends to flow out of the room to the outside, increasing the energy consumption for heating and, when used as interior material, the air containing moisture inside the room falls below the dew point on the surface of the decorative member. There has been a problem that condensation occurs due to cooling. In addition, the room temperature during non-heating is further lowered. In addition, it may cause warpage due to thermal expansion of the base material itself.

Therefore, the present invention is intended to solve the above-mentioned problems, even if the present invention is used by laminating on a substrate made of a material having a high thermal conductivity such as a metal, it is not affected by externally applied heat change. An object of the present invention is to provide a heat insulating decorative sheet and a heat insulating decorative member which can minimize secondary effects.

[0007]

In order to solve the above-mentioned problems,
The present invention provides a decorative heat insulating sheet having a decorative layer and a heat insulating layer formed on the back side of the decorative layer by wrapping a porous body with a gas barrier sheet and evacuating the inside of the package.

[0008] The present invention also provides a decorative heat insulating sheet having a decorative layer and a heat insulating layer formed on the back side of the decorative layer by wrapping a porous body with a gas barrier sheet and evacuating the inside of the package. Provided is a heat insulating decorative member provided with a metal base material directly or via another layer on the heat insulating layer side.

According to the heat-insulating decorative sheet and the heat-insulating decorative member of the present invention, even when the heat-insulating decorative sheet and the heat-insulating decorative sheet are laminated on a substrate made of a material having a high thermal conductivity such as a metal, the heat insulating decorative sheet and the heat-insulating decorative member can be used. Subsequent effects can be minimized.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a decorative heat insulating sheet and a decorative heat insulating member of the present invention will be described in detail. The decorative heat insulating sheet of the present invention is obtained by sequentially laminating a decorative layer on the front side and a heat insulating layer on the rear side. In the present invention, the front side refers to a side that is exposed to outside air (a side that can be seen) and a back side refers to a substrate side (a side that is not visible) in a state of being constructed and used.

The decorative layer basically consists of a base material layer which has been subjected to a decorative treatment. As the base layer of the decorative layer, polyethylene, polypropylene, polymethylpentene, ethylene-
Polyolefin resins such as propylene copolymer, ethylene-propylene-butene copolymer, ethylene-vinyl alcohol copolymer, ethylene-vinyl acetate copolymer, poly (methyl) acrylate, and poly (ethyl) acrylate , Poly (butyl methacrylate), ethyl (meth) acrylate-butyl (meth) acrylate copolymer,
Methyl (meth) acrylate-styrene copolymer, methyl (meth) acrylate-butyl (meth) acrylate-
Acrylic resin such as (meth) acrylic acid-2-hydroxyethyl copolymer (herein, (meth) acryl is used in the meaning of acryl or methacryl), polyester resin such as polyethylene terephthalate and polybutylene terephthalate, and poly Vinyl chloride, nylon, ABS resin, resins such as polystyrene, polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, ethylene tetrafluoride-perfluoroalkoxyethylene copolymer, Fluororesins such as polyfluoroethylene propylene and polytrifluoroethylene chloride;
Various silicon resins,

General Formula 1

[0013]

Embedded image

(Wherein, R represents a divalent organic group, and n represents an arbitrary natural number)

Woven or non-woven fabrics such as glass fiber, asbestos, potassium titanate fiber, inorganic fiber such as alumina fiber, silica fiber, carbon fiber, organic resin fiber such as polyester fiber and vinylon fiber, cedar, cypress, oak, oak And other thin plates of wood, etc.,

Iron, carbon steel, iron alloys such as stainless steel, aluminum, aluminum alloys such as duralumin, copper,
A metal base such as brass or titanium can be used. In addition to these single layers, a laminate of two or more layers can be used as the base layer of the decorative layer.

The base material layer is usually about 20 to 200 μm thick in terms of suitability for post-processing (bending, lapping, etc.), workability, weight and the like, and the base material itself has a sufficient design appearance. In such a case, the decorative layer can be used as it is, but usually, the decorative treatment is performed on the base material layer.

The decoration treatment includes a pattern layer on the surface of the base material layer,
To form a metal thin film layer or the like, or to provide an uneven pattern on the surface of the base material, or when the base material layer is a resin, knead a coloring agent such as a dye or pigment, or a combination thereof. it can.

Examples of the coloring agent include inorganic pigments such as titanium white, zinc white, red iron oxide, vermilion, cadmium red, ultramarine, cobalt blue, titanium yellow, graphite, carbon black, isoindolinone, hansa yellow, quinacridone, and phthalocyanine. Organic pigments (including dyes) such as blue, metal pigments composed of foil powder such as aluminum and brass, pearlescent pigments composed of foil powders such as titanium dioxide-coated mica and basic lead carbonate can be used. it can. These are added and dispersed in a resin as powder or scale-like foil pieces.

The pattern layer is formed by using a known printing method such as gravure printing, offset printing, silk screen printing, transfer printing from a transfer sheet, etc., and forming a pattern with ink (or paint). Performed by

The patterns include a wood pattern, a stone pattern, a cloth pattern, a squeezing pattern, a geometric figure, a character, a symbol, and a solid image.

As the ink (or) paint, chlorinated polyolefins such as chlorinated polyethylene and chlorinated polypropylene, polyester resins, urethane resins, acrylic resins, vinyl chloride-vinyl acetate copolymers and the like are used as binders. To one or a mixture of two or more of
Those to which known colorants as described above have been added can be used.

The formation of the concavo-convex pattern is typically performed by embossing, but other methods such as hairline processing are also possible. In embossing, a thermoplastic resin is heated and softened, pressurized and shaped with an embossing plate, and fixed by cooling. A known sheet-fed or rotary embossing machine is used.

As the uneven pattern, there are a wood channel groove, a stone plate surface unevenness (granite cleavage surface, etc.), a cloth surface texture, a matte surface, a grain, a hairline, a parallel groove, a skin squeezing, a tile groove and a brick jointed groove, and the like. There is.

Further, if necessary, the colored ink can be filled in the concave portions of the concave-convex pattern by a known wiping method (see Japanese Patent Publication No. 58-14312). As the coloring ink, the same inks as those listed above as the ink can be used. However, from the viewpoint of abrasion resistance, it is preferable to use a two-component curable urethane resin as a binder.

The metal thin film is made of aluminum, chromium, gold,
Using a metal such as silver or copper, a film can be formed and formed by a method such as a vacuum evaporation method or a sputtering method. The metal thin film may be provided on the entire surface or partially, for example, in a pattern.

Further, in the present invention, if necessary,
A recoat layer for surface protection and decorative treatment may be formed on the heat insulating decorative layer on the picture layer. The recoat layer can be formed of, for example, a nonwoven fabric of an acrylic resin having air permeability. Further, an embossed pattern can be provided to the nonwoven fabric, and the concave portion of the embossed pattern can be filled with a coloring ink by wiping.

When the substrate layer, the picture layer or the recoat layer is made of a resin, an ultraviolet absorber or a light stabilizer may be added to the layer in order to impart weather (light) resistance. preferable. The amount of each of the ultraviolet absorber and the light stabilizer is usually about 0.1 to 1% by weight.

As the ultraviolet absorber, organic and inorganic ultraviolet absorbers can be used. As the organic UV absorber, for example, 2- (2′-hydroxy-
3 ', 5'-di-tert-butylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-
3'-tert-butyl-5'-methylphenyl) -5
-Chlorobenzotriazole, 2- (2'-hydroxy-3'-tert-amyl-5'-isobutylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3'-isobutyl-5'-methyl Phenyl)
-5-chlorobenzotriazole, 2- (2'-hydroxy-3'-isobutyl-5'-propylphenyl)-
2′-hydroxyphenyl-5-chlorobenzotriazole-based ultraviolet absorbers such as 5-chlorobenzotriazole,

2- (2'-hydroxy-3 ', 5'-di-tert-butylphenyl) benzotriazole,
A 2'-hydroxyphenylbenzotriazole-based ultraviolet absorber such as-(2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-
Benzotriazole ultraviolet absorbers such as 3 ′, 5′-bis (α, α-dimethylbenzyl) phenyl) benzotriazole, 2,2′-dihydroxy-4-methoxybenzophenone, 2,2′-dihydroxy-4,4 2,2'-dihydroxybenzophenone-based ultraviolet absorbers such as '-dimethoxybenzophenone, 2,2', 4,4'-tetrahydroxybenzophenone,

Benzophenone ultraviolet absorbers such as 2-hydroxybenzophenone ultraviolet absorbers such as 2-hydroxy-4-methoxybenzophenone and 2,4-dihydroxybenzophenone; phenyl salicylate;
A salicylate-based ultraviolet absorber such as rt-butylphenyl salicylate is used. In addition, a reactive ultraviolet absorber in which an acryloyl group or a methacryloyl group is introduced into a benzotriazole skeleton can be used. Fine inorganic particles such as fine cerium oxide and fine zinc oxide can be used as the inorganic ultraviolet absorber.

Of these, in the present invention, it is preferable to use an organic ultraviolet absorber having a hydroxyl group in the molecule.
In particular, when the base material layer is made of a polyolefin resin, it is preferable to use, among these ultraviolet absorbers, those which are difficult to bleed from the polyolefin resin itself. As such an ultraviolet absorber, for example, 2-
(2′-hydroxy-3 ′, 5′-bis (α, α-dimethylbenzyl) phenyl) benzotriazole.
The amount of these ultraviolet absorbers is usually 0.1 to 5% by weight.
It is about.

In order to further prevent deterioration of each layer due to ultraviolet rays and to improve weather resistance, it is preferable to add a radical scavenger as another light stabilizer. Examples of the radical scavenger include bis- (2,2,6,6-tetramethyl-4-piperidinyl) sebacate, bis- (N-methyl-2,2,6,6-tetramethyl-4-piperidinyl) sebacate, In addition, for example, Japanese Patent Publication No. 4-8262
Hindered amine radical scavengers, piperidine radical scavengers, and the like, such as the compounds disclosed in JP-A No. 5 can be used.

When a light stabilizer comprising a hindered amine radical scavenger is added to the polyolefin resin, polyurethane resin, polyolefin resin may be used in the ink layer and the adhesive layer adjacent to the polyolefin resin sheet as well as the polyolefin resin sheet. Use of a resin containing no chlorine atom in the molecule, such as polyamide resin, is favorable in terms of improving weather resistance.

Incidentally, a vinyl chloride-vinyl acetate copolymer,
When using a resin containing chlorine atoms in molecules such as chlorinated polyolefins, hydrogen chloride is generated from these resins by the action of ultraviolet rays or heat in a dechlorination reaction, which reacts with a hindered amine radical scavenger to act. Inactivate
Therefore, weather resistance is not sufficiently improved.

The heat insulating layer is provided to prevent heat from being transmitted from the outside world and to prevent a base material such as a metal from being heated or cooled by heat conduction. As the heat insulating layer, any material can be used as long as heat transfer and heat transfer by convection from the heat insulating decorative layer side to the metal base material side or from the metal base material side to the heat insulating decorative layer side can be suppressed.

In the present invention, it is basically preferable to form the vacuum layer in some form from a heat insulating material which is confined in a closed space. However, since it is impossible to form and maintain a vacuum layer directly in the air, it is impossible to form a closed space with a layer of a substance having strength and gas barrier properties enough to withstand the atmospheric pressure, and to form the closed space. It is necessary to make a vacuum. Moreover, in order to laminate along the surface of building members of various shapes, it is necessary to have flexibility and light weight almost equivalent to a resin sheet.

The present inventors have searched for various materials in order to find a material satisfying such conditions. For example, when a closed space is formed with a layer of metal or glass like a thermos, strength and gas barrier properties are good, but flexibility,
The lightness was insufficient for practical use. In addition, when a closed space is formed with a resin sheet such as aluminum-deposited polyethylene terephthalate, flexibility, lightness and gas barrier properties are good, but the shape resists the pressure difference between the atmospheric pressure and vacuum. Was insufficient to maintain the airtightness, and a closed space could not be formed. Therefore, a vacuum layer could not be formed. In the end, we could not find any single-layer material that could meet the requirements.

Then, as a result of further producing and examining various materials, it was found that a heat insulating layer having a structure as shown in FIG. 5 could be employed. The heat insulating layer 1 is formed by wrapping the periphery of the porous body 1c with a gas barrier sheet 1a. The package of the gas barrier sheet 1a has a closed and closed curved surface, the internal space is isolated from the external space (atmospheric pressure), the porous body 1c is sealed in the internal space, and the internal space is It is kept in a vacuum.

The porous body 1c has a ventilation hole 1b inside which communicates with the outside. Gas barrier sheet 1a
Is compressed toward the inside of the package by the pressure difference between the atmospheric pressure and the vacuum, but is supported by the porous body 1c, and further compression is prevented. In addition, the porous body 1
The gas inside c is evacuated from the vent 1b to be in a vacuum state, and the gas barrier sheet 1a is
You can't get inside. Therefore, the space inside the ventilation hole 1b can be stably present as a vacuum layer.

The heat insulating layer 1 having such a configuration is formed in a sheet shape. If the porous body 1c has sufficient flexibility,
As shown in FIG. 5A, the porous body can be formed into a single continuous and integrated layer. In terms of the thermal insulation effect, FIG.
The configuration of (A) is better, and a heat bridge phenomenon (a phenomenon in which a heat flow is short-circuited through a locally weak heat insulating effect in a heat insulating layer) is less likely to occur.

When the flexibility of the porous body is insufficient, the porous body 1c is divided into pieces having an area which does not impair the flexibility of the entire heat insulating layer, as shown in FIG. 5B. By doing so, sufficient flexibility can be ensured. On the other hand,
In this case, the heat bridge phenomenon easily occurs. To overcome this disadvantage, as shown in FIG. 5C, the heat insulating layer 1 has a multi-layer (laminated) structure, and the gap ΔL between the porous to 1c fragments in one layer is different from that of the adjacent layer. When the heat insulating layer 1 is formed so as to overlap with the fragments of the porous body 1c of the heat insulating layer, or when the heat insulating layer 1 is formed as a single layer, the gas barrier sheet 1a is made of, for example, polystyrene, polyacrylonitrile, or the like. It is preferable to use a material having low thermal conductivity. In this case, as shown in FIG.
It is preferable to bond using an adhesive 4 ″.

Specific examples of the material of the porous body 1c include polystyrene, polyacrylonitrile, polyolefin resin, polyester resin, polyvinyl chloride, urethane resin,
Resins such as phenolic resin and epoxy resin, glass, ceramics, ceramics, zeolite, activated clay, sepiolite, diatomaceous earth, alumina, silica, activated carbon, and the like. Among them, polystyrene, polyacrylonitrile and the like, which are low thermal conductivity materials, are preferable.

As the porous form of the porous body, a porous form itself such as activated carbon, activated clay, zeolite, sepiolite, diatomaceous earth, etc. may be used as it is.
In addition, for a material that is not porous per se, the above material may be foamed by a known method so as to generate open air bubbles that flow to the outside, or a large number of holes may be formed using a needle or the like. And a form in which a large number of fibrous materials are accumulated to form a nonwoven fabric or a woven fabric. Alternatively, a resin may be bonded (bound) to such an extent that the air holes are not completely filled (not sealed) between the particles or fibers of the various materials. In this manner, the heat insulating layer can be given appropriate strength and flexibility, and can be easily formed into one continuous body as shown in FIG.

The size of the porous body 1c is 10
In the case of a fragmentary shape as shown in FIGS. 5 (B), 5 (C) and 7, dimensions L _{1 to} L _1
4 (in the case of a strip shape as shown in FIG. 7C, the length of the narrow side) is about 1 to 30 mm. The gaps ΔL ₁ to ΔL ₄ between the fragments are about 0.1 to 2 mm.

The shape of each fragment when the porous body 1c is fragmented is to reduce the contribution of the heat bridge phenomenon in which heat penetrates the heat insulating layer and short-circuits, and to increase the flexibility of the heat insulating layer. It is preferable to use a flat shape in which flat surfaces can be spread without gaps. Specific examples include a regular square as shown in FIG. 7A, a regular triangle as shown in FIG. 7B, and a regular hexagon as shown in FIG. 7C. Further, in the case of a planar fragmentary porous body array as shown in FIGS. 7A to 7C, a two-dimensional direction (for example, in the case of FIG. And in the y-axis direction), but if it is sufficient to provide flexibility only in one-dimensional direction, it may be rectangular (strip type) as shown in FIG.

In the case of this figure, if the porous body 1c itself is not flexible, it cannot be bent in the y-axis direction but can be bent in the x-axis direction. Therefore, for example, it is possible to wind and laminate a heat insulating layer made of a porous body in the form of FIG. 7D together with a decorative layer around a polygonal prism whose major axis direction (height direction) faces the y axis direction. It is possible.

The dimensions of the air holes 1b of the porous body determine the dimensions which are optimal for the overall dimensions of the porous body, the strength of the porous body, the thickness and elastic modulus of the gas blocking sheet, the desired heat insulating properties, and the like. However, it is usually about 10 to 1000 μm.

As the material of the gas barrier sheet 1a, a material having a good barrier property against gas (particularly water vapor and air) and having appropriate flexibility is used. For example,
Polystyrene, polyacrylonitrile, polyethylene,
A resin such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyvinyl chloride, or polyvinylidene chloride; a gas-blocking metal or metal oxide layer such as aluminum or silica on one or both surfaces of the resin, which is formed by a vacuum deposition method or the like. Laminated ones and metals such as aluminum are used. Among them, a sheet of resin, particularly polystyrene or polyacrylonitrile is preferable from the viewpoint of heat insulation. Particularly, from the viewpoint of gas barrier properties, silica-deposited polyethylene terephthalate or polyvinylidene chloride sheet is preferred. The thickness of the gas barrier sheet is usually
It is about 20 to 200 μm.

Further, the vacuum once obtained is gradually lost (returned to the atmospheric pressure) due to the invasion of air with time, the release of gas (outgas) in the enclosed space wrapped with the gas barrier sheet 1a, and the like. In order to prevent this, a getter that reacts with and captures gas such as air or water vapor
r) The layer 1d is preferably formed on the inner side of the package of the gas barrier sheet 1a. For example, as shown in FIG. Examples of the material for the getter layer include aluminum, magnesium, a barium-aluminum alloy, and a barium-magnesium alloy.

The inside of the vent 1b of the porous body 1c is kept in a vacuum state, and this vacuum layer contributes to the heat insulating effect. The degree of vacuum is preferably as low as the atmospheric pressure, but practically, it is sufficient to set the pressure to 0.7 Torr or less.

The heat-insulating layer 1 having the above-mentioned structure used in the present invention.
The manufacturing method is not particularly limited, but a typical example is as shown in a conceptual diagram in FIG. First, as shown in FIG. 6 (A), a plan view is a quadrangular (square or rectangular) hollow bag shape, and three sides of four sides are adhered and sealed (sealed).
Then, a gas-blocking sheet 1a having only one side opened is prepared (FIG. 6 (A) is a cross-sectional view), and a fragment-like porous sheet is provided in the bag-shaped gas-blocking sheet. A predetermined number of bodies 1c are placed.

Next, as shown in FIG.
The side is connected to a vacuum pump through an exhaust pipe to evacuate the inside of the bag-shaped gas blocking sheet. When a predetermined atmospheric pressure (degree of vacuum) is reached, as shown in FIG. 6C, a pair of metals heated (heated to the fusion temperature of the gas barrier sheet 1a made of a thermoplastic resin). The heated one side is pressed with one side of the exhausted side sandwiched therebetween, and is thermally sealed and sealed (packed). Further, a surplus portion outside the sealing portion is cut off with a blade, so that a heat insulating layer having a structure as shown in FIG. 5B can be obtained.

In the present invention, a moisture-proof layer may be further formed on the front surface, the back surface, or both the front and back surfaces of the heat-insulating layer, if necessary, in order to prevent moisture from penetrating into the heat-insulating decorative sheet or the interior heat-insulating member. Can also.

The moisture-proof layer has a thickness of about 20 to 100 μm and is made of a metal such as aluminum or silica or a metal oxide-based moisture-proof substance by a vacuum evaporation method, CVD (Chemi).
cal Vapor Deposition) method, an ion plating method, a sputtering method or the like, and directly formed on the moisture-proof layer, or a moisture-proof resin film such as polyethylene, polyvinylidene chloride, biaxially stretched polyethylene terephthalate, or the like. It can be formed by laminating a film in which aluminum, silica, or the like is deposited on a resin film by a method such as dry lamination with an adhesive or heat fusion.

The decorative heat insulating member of the present invention is formed by laminating the surface side of the metal base material and the heat insulating layer side of the heat insulating decorative sheet directly or via another layer. Here, an adhesive layer is mentioned as another layer.

Examples of the base material that can be used for the decorative heat insulating member of the present invention include various materials such as metal, wood, ceramics, and resin. Among them, a metal substrate is preferable because the heat insulation effect can be greatly improved.

The metal substrate has a shape such as a hollow or solid flat plate, a plate such as a curved curved plate, a prism such as a circular column or a polygonal column. Examples of the metal include iron, iron alloys such as carbon steel and stainless steel, aluminum alloys such as aluminum and duralumin, copper, brass, and titanium.

FIGS. 1 and 2 show examples of the heat insulating decorative sheet of the present invention. FIG. 1A is a heat insulating decorative sheet 10A having a structure in which a decorative layer 2 composed of a resin base layer 2a containing a coloring pigment 2b is laminated on the heat insulating layer 1 as shown in FIG. 6C. FIG. 1 (B) shows a base layer 2a of a resin containing an ultraviolet absorber 2d and a pattern layer 2 on a heat insulating layer 1 as shown in FIG. 6 (C).
c is a heat insulating decorative sheet 10 </ b> B having a structure in which the decorative layer 2 made of c is laminated via the adhesive layer 4. FIG. 1 (C)
Is a heat-insulating decorative sheet 10C in which a moisture-proof layer 3 is further formed on the heat-insulating layer side of the heat-insulating decorative sheet 10B of FIG. 1 (B).

FIG. 2D shows the heat insulating layer 1 shown in FIG.
A base material layer 2a is laminated thereon with an adhesive layer 4 interposed therebetween, and an uneven pattern 5a is formed on the surface of the base material layer 2a by embossing or the like, and then the concave portions of the uneven pattern are filled with a coloring ink 2e. Further, it is a heat insulating decorative sheet 10D having a structure in which a decorative layer 2 provided with a pattern layer 2c on the surface is laminated. FIG. 2E shows FIG.
(C) A moisture-proof layer 3 is provided on a heat-insulating layer 1 via an adhesive layer 4, and a pigment 2 b and an ultraviolet absorber 2 are provided on the moisture-proof layer 3.
This is a heat-insulating decorative sheet 10E having a structure in which decorative layers 2 made of a resin base layer 2a containing d are laminated.

FIG. 2F shows a decorative layer 2 comprising a resin base layer 2a containing a UV absorber 2d and a picture layer 2c on an insulating layer 1 as shown in FIG. A recoat layer 5 made of a nonwoven fabric or the like is laminated thereon with an adhesive layer 4 interposed therebetween.
This is a heat-insulating decorative sheet 10F having a structure in which a concave-convex pattern 5a is formed on the surface of the sheet by embossing or the like.

Of course, what has been described above is merely an embodiment of the heat-insulating decorative sheet of the present invention, and the layer structure and the like can be freely changed without departing from the gist of the present invention.

Next, an example of the heat insulating decorative member of the present invention is shown in FIG.
Shown in FIG. 3A shows a heat insulating decorative member 20A in which the surface of the metal base material 6 and the surface of the heat insulating decorative sheet 10A on the heat insulating layer 1 side are laminated via the adhesive layer 4.
FIG.

FIG. 3B shows a surface on the heat-insulating layer side of the heat-insulating decorative sheet 10 of the present invention and a hollow prism, one surface of which is cut off along the axial direction. FIG. 9 is a perspective view of a heat insulating decorative member 20B in which a metal substrate 6 ′ having a bent shape is laminated on the front side (outside) via an adhesive layer 4 ′.

These decorative insulation members 20A and 20B
Is, for example, the surface (outside) of the metal substrate 6 (or 6 ′)
Then, after applying the entire surface of the adhesive, the heat-insulating decorative sheet of the present invention can be adhered on the back side (the side not having the decorative layer 2) of the heat-insulating decorative sheet. .

The adhesive that can be used is not particularly limited as long as it can bond the metal substrate and the decorative heat insulating sheet. For example, two-component or thermosetting adhesives such as polyurethane-based, epoxy-based, polyester-based, and phenolic-based adhesives, and thermoplastic adhesives such as vinyl acetate-based, acrylic-based, and polyethylene-based adhesives can be used. Can be

The heat-insulating sheet and the exterior material of the present invention are used as exterior materials for buildings such as roofs and outer walls, exterior or interior materials such as window frames (sashes), door frames, door pockets, curtain walls and doors. Fittings or building members, fences, partitions, terraces, gates, lattices, roof decks, exterior building members such as balconies, and exterior materials such as exterior materials or interior materials for various vehicles.

[0068]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. EXAMPLE As shown in FIG. 4 (A), the surface of a base material layer 32a made of a transparent acrylic resin film (125 μm thick) to which 0.4% by weight of a benzotriazole-based ultraviolet absorber 32d was added,
The binder is mainly composed of acrylic polyol.
It is composed of a two-component curable urethane resin having hexamethylene diisocyanate as a cross-linking agent.
Using an ink to which isoindolinone, titanium white, carbon black and phthalocyanine blue were added, a 2 μm thick yellow-brown solid printing layer 32f having a thickness of 2 μm was formed by a gravure printing method. Furthermore, in the same binder as above,
Using a red-brown ink to which carbon black, red stalks and quinacridone are added as pigments,
The decorative layer 32 was provided by printing 2c.

Next, on the decorative layer 32, a basis weight of 25 g /
cm ² of acrylic dry non-woven fabric (Japan Vilene Co., Ltd.
, Product number: OL-4063) An adhesive 3 of a two-part curable urethane resin having 35 as an acrylic polyol base material and 1.6-hexamethylene diisocyanate as a crosslinking agent
After adhering with No. 4, the entire layer was heated and softened, a metal embossing plate was pressed, and this was cooled and solidified to form an uneven pattern 35a.

Further, an allylic resin-based coating agent to which 0.5% by weight of a benzotriazole-based ultraviolet absorber and 0.5% by weight of a hindered amine-based radical scavenger 37a were added in order to impart weather resistance was added to a roll. The surface coating layer 37 was formed by applying 10 g / m ² by a coating method.

The base layer 32a of the transparent acrylic film
Acrylic polyol as a main component, 1,6-
A heat insulating layer 3 is formed via an adhesive layer 34 ′ made of a two-component curable urethane resin using hexamethylene diisocyanate as a crosslinking agent.
1 was laminated. The heat insulating layer 31 is a package having a gas barrier sheet 31a in which an aluminum thin film is vacuum-deposited as a getter layer and a moisture-proof layer on one surface of a biaxially stretched polyethylene terephthalate sheet having a thickness of 25 μm, with the aluminum thin film side inside. Inside, a 1 mm thick, open-cell foam of polystyrene, and the shape has a side length of 20 mm
Are arranged with a gap of 0.5 mm as shown in FIG. 7A, and the inside of the package is 0.5 Torr.
A heat insulating layer 31 having a structure as shown in FIG.

Further, a 50 μm-thick biaxially stretched PET (polyethylene terephthalate) film in which aluminum was deposited at 400 ° on the back surface of the heat insulating layer 31 was formed by using 10 g / m ² of a two-component curable acrylic urethane-based adhesive 34 ″. By laminating to form the moisture-proof layer 33, a heat insulating decorative sheet 10G of the example was obtained.

Next, on the back side of this (moisture-proof layer 33)
Side) and an aluminum plate (2 mm thick) 36 are laminated via an adhesive layer 34 ″ ′ made of a two-component curable acrylic urethane-based adhesive (20 g / m ² ), and the heat insulating decorative member 20 </ ^b > C according to the embodiment is laminated. FIGS. 4A and 4B show structural cross-sectional views of the obtained heat insulating decorative sheet and heat insulating decorative member.

COMPARATIVE EXAMPLE 1 In the heat-insulating decorative sheet and the heat-insulating decorative member of the example, the inside of the package of the gas barrier sheet was not exhausted, and the gap between the porous bodies and the inside of the ventilation hole were at atmospheric pressure (760 Torr). Air was allowed to remain. Others were the same as Example 1. Comparative Example 2 A transparent biaxially stretched polypropylene film (thickness 125) to which 0.4% by weight of a benzotriazole-based ultraviolet absorber was added
μm) was prepared, and a corona discharge treatment was applied to both sides of the film. Next, on the surface thereof, a binder is composed of a two-component curable urethane resin having acrylic polyol as a main component and 1.6-hexamethylene diisocyanate as a cross-linking agent, and red pigment, isoindolinone, titanium white, Using an ink containing carbon black and phthalocyanine blue, a 2 μm thick yellow-brown solid printing layer was formed by gravure printing.
Further, a decorative layer was provided by printing a pattern layer composed of a wood grain pattern using a red-brown ink obtained by adding carbon black, red iron oxide, and quinacridone as pigments to the same binder as described above.

Then, the basis weight was 25 g / c on the decorative layer.
m ² of acrylic dry non-woven fabric (Japan Vilene Co., Ltd.
And the product number: OL-4063) as an acrylic polyol main agent and a two-component curable urethane resin adhesive having 1.6-hexamethylene diisocyanate as a cross-linking agent, followed by heating and softening all layers. The metal embossing plate was pressed and solidified by cooling to form an uneven pattern.

Further, an acrylic resin-based coating agent to which 0.5% by weight of a benzotriazole-based ultraviolet absorber and 0.5% by weight of a hindered amine radical scavenger were added to impart weather resistance was roll-coated. By law 10
g / m ^{2 was} applied to form a surface coat layer.

On the back side, 20 parts by weight of a resin emulsion (manufactured by Chuo Rika Co., Ltd., product number: ET-84, acrylic-styrene copolymer, solid content: 50% by weight) was mixed.
This was applied by a blade coater at a rate of 1000 g / m ² of resin to form a resin layer. As a moisture-proof layer,
A biaxially stretched PET film having a thickness of 50 μm on which aluminum was deposited at 400 ° was laminated using a two-component curable acrylic urethane-based adhesive at 10 g / m ² to obtain a heat insulating decorative sheet of a comparative example.

Then, the back side of this product and an aluminum plate (2 mm thick) were laminated via a two-component curable acrylic urethane-based adhesive (20 g / m ² ) to have the same layer structure as in the example. A heat insulating decorative member of a comparative example was obtained.

[0079]

According to the present invention, samples of each of the embodiment and the comparative example were tested at room temperature of 20 ° C.
0 ° C in a room with a relative humidity of 30% RH (dew point 4 ° C)
When floating on ice water, the heat-insulating decorative member of the example showed no dew condensation on the surface and showed good heat insulating properties. On the other hand, in the heat insulating decorative materials of Comparative Examples 1 and 2, dew condensation occurred on the entire surface of the heat insulating decorative material.

When the surface temperature of each of the heat insulating decorative members was measured, the surface temperature of the heat insulating decorative material of the example was 9 ° C., which was excellent in heat insulation. The surface temperature of the heat insulating decorative material was 3 ° C. and 1 ° C., respectively, and the heat insulating effect was hardly recognized.

[0081] weathering test was then carried out these exposure test the insulation decorative material in carbon arc燈型sunshine weatherometer the (black panel temperature 63 ° C., conditions during rainfall time 18 min / 120 min).

At the time of irradiation for 1,000 hours (corresponding to almost two years in a normal outdoor exposure route in Japan), any of the heat insulating decorative materials is
There was no peeling of the nonwoven fabric and no change in appearance, and it was sufficient for exterior use. At the time of irradiation for 2000 hours, peeling between the base material and the nonwoven fabric was confirmed in the heat insulating decorative material of Comparative Example 1, but there was no change in the heat insulating decorative material of Example and Comparative Example 2.

Therefore, the heat-insulating decorative material of the present invention has an excellent heat-insulating effect as compared with the heat-insulating decorative material of the comparative example, has good indoor heat retention, and can save energy consumption for cooling and heating. It was also found that the material had extremely excellent weather resistance.

As described above, according to the heat insulating decorative sheet and the heat insulating decorative material of the present invention, the following effects can be obtained. (1) It has an excellent thermal insulation effect against external temperature changes,
A base material having a high thermal conductivity such as a metal base material does not undergo thermal deformation due to an increase in the external temperature, and when the temperature decreases, dew condensation does not occur inside the heat insulating decorative sheet (or the heat insulating decorative member). .

(2) When the heat insulating layer of the heat insulating decorative sheet (or the heat insulating decorative member) of the present invention has a getter layer inside the gas barrier sheet, a more excellent heat insulating effect can be obtained for a longer period of time. Obtainable.

(3) When the decorative heat insulating sheet (or heat insulating decorative member) of the present invention contains an ultraviolet absorber or the like in its decorative layer or surface coat layer, it has extremely excellent weather resistance.

(4) The heat-insulating decorative sheet and the heat-insulating decorative material of the present invention have excellent flexibility and light weight.

Therefore, the heat-insulating decorative sheet and the heat-insulating decorative material of the present invention can be sufficiently suitably used not only as an interior decorative material for various construction members and the like, but also as an external heat-insulating decorative material.

[Brief description of the drawings]

FIG. 1 is a structural sectional view of a heat insulating decorative sheet of the present invention.

FIG. 2 is a structural cross-sectional view of the heat insulating decorative sheet of the present invention.

FIG. 3 is a structural sectional view of a heat insulating decorative member of the present invention.

FIG. 4 is a structural sectional view of a heat insulating decorative sheet (A) and a heat insulating decorative member (B) of Example 1.

FIG. 5 is a structural sectional view of a heat insulating layer of the heat insulating decorative sheet of the present invention.

FIG. 6 is a cross-sectional view showing main steps of manufacturing a heat insulating layer of the decorative heat insulating sheet of the present invention.

FIG. 7 is a plan view of a porous body of a heat insulating layer of the heat insulating decorative sheet of the present invention.

[Explanation of symbols]

1, 31: heat insulation layer, 1a, 31a: gas barrier sheet (package), 1b, 31b: vent hole (vacuum part), 1
c, 31c: porous body, 1d: getter layer, 2a, 32
a: base material layer, 2b: colorant (color pigment), 2c, 32b
... Pattern layer, 2d ... UV absorber, 2e ... Colored ink (wiping ink), 5a, 35a ... Concave and convex patterns, 3,33
... Moisture-proof layer, 4, 4 ', 4 ", 34, 34', 34", 3
4 "': adhesive (layer), 5, 35 ... recoat layer, 6,
6 ', 36: metal base material, 10A, 10B, 10C, 10
D, 10E, 10F, 10G: heat insulating decorative sheet, 20
A, 20B, 20C: heat insulating decorative member, 37: surface coat layer, 37a: ultraviolet absorber and radical scavenger, L ₁ ,
L ₂ , L ₃ , L ₄ ... Dimensions of one side of the porous body, ΔL, ΔL
₁ , ΔL ₂ , ΔL ₃ , ΔL ₄ ... gaps between porous material fragments

Continued on the front page F-term (reference) 2E001 DD01 FA09 FA10 GA03 GA06 GA22 GA24 GA26 GA28 GA42 GA81 HA33 HB02 HB03 HB04 HB05 HB08 HD11 HE08 4F100 AB01C AB10 AK01B AK12 AK25 AK27 AK42 AK51G AR00A AR00 BA03 BA03 BA03 BA03 BA03 BA00 DD27B DD32B DJ01B DJ03 EH66 EJ59B GB07 HB00 HB00A HB21 HB31 JD02B JD04 JD04D JJ02 JJ02B

Claims (2)

[Claims] 1. A heat insulating decorative sheet comprising a decorative layer and a heat insulating layer formed on the back side of the decorative layer by wrapping a porous body with a gas barrier sheet and evacuating the inside of the package. 2. A heat insulating decorative sheet having a decorative layer and a heat insulating layer formed by packing a porous body on the back side of the decorative layer with a gas barrier sheet and evacuating the inside of the package. A heat insulating decorative member provided with a metal substrate, directly or via another layer.