Laminate and covering structure

Abstract

To provide a laminate and a covering structure that exhibit excellent workability, heat-resistant protection, and other properties.SOLUTION: The laminate of the present invention comprises at least heat-absorbing layers and a decorative layer, wherein the heat-absorbing layers are arranged on the back side of the decorative layer and spaced apart in a direction parallel to the main surface of the decorative layer. The decorative layer is formed from a composition comprising a resin component and a powder or granular material having design properties. The glass transition temperature of the resin component is -60°C to 60°C. Furthermore, a thermally foamable layer is laminated on the back side of the heat-absorbing layer or between the heat-absorbing layer and the decorative layer.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a novel laminate and a coating structure.

Background Art

[0002] In recent years, due to the diversification of the design of living spaces, many buildings have been constructed in which columns, beams, etc. constituting the structure are exposed and decorated. For example, Patent Document 1 describes a decorative column in which the outer peripheral surface of a core material serving as a column is decorated with a decorative board. On the other hand, in building structures, for the purpose of protecting the building from fire, it is required that main structures such as columns and beams have a heat-resistant structure. However, in the above Patent Document 1, there are cases where the heat-resistant protection is inferior.

[0003] In contrast, various proposals have been made for coating structures having design properties and heat-resistant protection properties. As an example, for instance, Patent Document 2 describes a coating structure in which a refractory coating material is adhered to the surface of a core material serving as a column via an adhesive, and then a finishing layer is formed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the above Patent Document 2, since it is necessary to construct each layer in order, the process of obtaining the coating structure is complicated, and there is room for improvement.

Means for Solving the Problems

[0006] The present invention has been made in view of the above problems, and an object thereof is to provide a laminate and a coating structure excellent in designability, workability, heat protection properties, and the like.

[0007] As a result of intensive studies to solve the above problems, the inventor of the present invention has conceived a laminate having a specific shape in which at least a heat absorption layer and a decorative layer are laminated, and a coating structure having the laminate, and has completed the present invention.

[0008] That is, the present invention has the following features. 1. A laminate having a decorative layer, wherein the laminate is formed by laminating at least a heat absorption layer and a decorative layer, the heat absorption layers are arranged in parallel with the main surface of the decorative layer at intervals on the back surface side of the decorative layer, the decorative layer is formed of a composition containing a resin component and a design powder, and the glass transition temperature of the resin component is -60°C to 60°C and a heat foaming layer is laminated on the back side of the heat absorption layer or between the heat absorption layer and the decorative layer A laminate characterized by the above. 2. The laminate according to 1, wherein the heat foaming layer is made of a mixture containing a resin component, a flame retardant, a foaming agent, a carbonizing agent, and a filler. 3. The laminate according to 1, wherein the thickness of the heat foaming layer is 0.1 to 10 mm. 4. A coating structure in which the periphery of a base material is surrounded by a laminate, wherein the laminate is the laminate according to 1. ~ any of 3 A coating structure characterized by having the laminate described above.

Effects of the Invention

[0009] According to the present invention, a coating structure excellent in workability, heat protection properties, and the like can be obtained.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Explanation of Reference Numerals

[0011] 1: Laminate 2, 21 - 24: Heat Absorbing Layer 3: Decorative Layer 4: Adhesive Layer 5: Thermal Foam Layer 6: Substrate

Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments for carrying out the present invention will be described.

[0013] The laminate of the present invention is one in which at least a heat absorbing layer and a decorative layer are laminated, and a plurality of heat absorbing layers are arranged in parallel with a space on the back side of the decorative layer. In the present invention, by using such a specific laminate and surrounding the periphery of the substrate, a coating structure can be efficiently obtained, so that the workability is excellent. And, the decorative layer constituting the laminate is excellent in design, and by the combined action with the heat absorbing layer, excellent heat resistant protection can be exhibited.

[0014] [Laminate] The laminate of the present invention is one in which at least a heat absorbing layer and a decorative layer are laminated.

[0015] In the present invention, as the heat absorbing layer, one that exhibits a heat absorbing action when the temperature rises can be used. As the heat absorbing layer, a layer having bound water and / or free water is preferable, and such a heat absorbing layer can exhibit the performance of absorbing heat by dehydration (evaporation, etc.) of bound water and / or free water when the temperature rises. Here, bound water is water in a state of being bound to the components constituting the heat absorbing layer, and examples thereof include water of hydration, crystal water, adsorbed water, etc. On the other hand, free water is water other than bound water contained in the heat absorbing layer in a state of having no connection with the components constituting the heat absorbing layer.

[0016] Examples of materials constituting the heat absorption layer include cured products using cement, gypsum, etc. as raw materials (for example, mortar, concrete, gypsum board, etc.), cured products using calcium silicate, etc. as raw materials (for example, calcium silicate board, etc.), or boards, sheets, cured products, etc. encapsulating water-absorbing polymers, hydrogels, etc. These can be used alone or in combination of two or more.

[0017] In the present invention, as an example of a suitable material constituting the heat absorption layer, for example, gypsum board can be mentioned. Since gypsum board usually has calcium sulfate dihydrate as the main component, it contains a large amount of bound water and exhibits an endothermic effect in the temperature range of 100 to 200°C. Therefore, when the temperature rises due to a flame, heat, etc., a stable endothermic effect can be exerted. As the gypsum board, in addition to general gypsum board, non-combustible laminated gypsum board (gypsum board using non-combustible base paper as the cover), reinforced gypsum board (gypsum board having gypsum mixed with inorganic fibers such as glass fibers as the core material), gypsum board with glass fiber non-woven fabric (gypsum board having gypsum mixed with glass fibers as the core material and inserting glass fiber non-woven fabric on the front and back surfaces thereof), etc. can be used.

[0018] From the viewpoints of heat insulation, heat resistance protection, strength, light weight, etc., the thickness of the heat absorption layer is preferably 1 to 30 mm, more preferably 3 to 28 mm, and still more preferably 5 to 25 mm. In the present invention, "a to b" is synonymous with "a or more and b or less".

[0019] In the present invention, the decorative layer is not particularly limited as long as it can impart designability (aesthetic appearance), but is preferably formed by a composition containing a resin component and design powder particles (hereinafter also referred to as "composition for decorative layer"). Specifically, it is preferable to use a pre-formed sheet-like composition for decorative layer (hereinafter also referred to as "decorative sheet").

[0020] The above resin component mainly plays a role in immobilizing the decorative powder particles. As such a resin component, various synthetic resins can be used. Examples of resin types include acrylic resin, silicone resin, acrylic silicone resin, fluororesin, vinyl acetate resin, acrylic-vinyl acetate resin, vinyl chloride resin, urethane resin, acrylic urethane resin, epoxy resin, alkyd resin, polyvinyl alcohol resin, polyester resin, ethylene resin, polyvinyl alcohol, cellulose and its derivatives, or composites thereof, etc. Such synthetic resins may have the property of causing a cross-linking reaction.

[0021] The glass transition temperature of the resin component is preferably -60°C to 60°C, more preferably -40°C to 30°C, and even more preferably -30°C to 20°C. In such a range, it is possible to impart appropriate flexibility. The glass transition temperature is a value obtained by Fox's calculation formula.

[0022] The above decorative powder particles play a role in imparting color, pattern, etc. to the decorative layer (decorative sheet). As such decorative powder particles, for example, known ones such as coloring pigments, extender pigments, and aggregates can be used, and these can be used alone or in combination of two or more.

[0023] The decorative layer of the present invention preferably contains granular inorganic particles as the above-described decorative powder particles. Thereby, the granular inorganic particles are immobilized by the resin component, and a decorative layer exhibiting the color tone based on the granular inorganic particles and the design property due to the connection (aggregation) of the granular inorganic particles can be obtained. That is, the color tone of the decorative layer is based on the color tone of the granular inorganic particles. Further, the decorative layer may have a plurality of colored regions having different color tones. In this case, the decorative layer can be formed by curing a plurality of composition for decorative layer having different color tones. Such a decorative layer can not only enhance the design property by the granular inorganic particles, but also enhance the heat-resistant protective property. The mechanism of action is not limited, but at high temperatures such as during a fire, the temperature of the laminate can be suppressed from rising rapidly due to the heat reflectivity, heat resistance, etc. of the granular inorganic particles, and sufficient heat-resistant protective property can be exhibited by the synergistic effect with the heat absorption action of the heat absorption layer.

[0024] As the granular inorganic particles, as long as the material of the matrix is inorganic, either natural or artificial can be used. As such granular inorganic particles, an embodiment containing at least granular colored inorganic particles is preferable. As such granular colored inorganic particles, particularly, opaque ones with a light transmittance of less than 3% are preferable, and those with a light transmittance of 2% or less are more preferable. Specific examples of such granular colored inorganic particles include, for example, marble, oya stone, serpentine, granite, sandstone, slate, basalt, porphyry, diorite, andesite, limestone, and their pulverized products, pulverized ceramic products, pulverized ceramic products, metal grains, etc. In addition, fluorite, gypsum, feldspar, silica stone, silica sand, and their pulverized products, pulverized glass products, glass beads, etc. colored so as to satisfy the above conditions can also be used.

[0025] The above light transmittance is the value of the total light transmittance measured by a turbidimeter. In this measurement, a sample of granular inorganic particles is filled in a transparent glass cell with an inner thickness of 5 mm, and then gradually filled with water, and then the bubbles in the cell are removed by vibration and used.

[0026] In addition to the above granular colored inorganic particles, it is also possible to adopt a form containing granular transparent inorganic particles. The use of such granular transparent inorganic particles is suitable in terms of improving aesthetic appearance. As the granular transparent inorganic particles, those having a light transmittance of 3% or more (more preferably 3 to 50%, still more preferably 10 to 30%) are suitable. Examples of the granular transparent inorganic particles include silica, gypsum, feldspar, silica stone, etc. and their pulverized products, glass pulverized products, glass beads, etc. As long as they satisfy the above light transmittance, either colorless or colored types can be used.

[0027] The particle size of the granular inorganic particles is preferably 0.01 mm to 5 mm, more preferably 0.02 mm to 2 mm, still more preferably 0.03 to 0.8 mm. By variously combining granular inorganic particles with different particle sizes, the range of design characteristics can also be broadened. The particle size of the granular inorganic particles is measured by sieving using a metal mesh sieve specified in JIS Z8801-1:2000.

[0028] The mixing ratio of the above resin component and the design powder particles, in terms of solid content, is preferably 2 parts by weight or more and 50 parts by weight or less (more preferably 3 parts by weight or more and 30 parts by weight or less, still more preferably 4 parts by weight or more and 20 parts by weight or less, particularly preferably 5 parts by weight or more and 19 parts by weight or less) with respect to 100 parts by weight of the total amount of the design powder particles. With such a ratio, it is easy to obtain a decorative layer composed of a connected body (aggregate) of the design powder particles. As a result, under high temperatures such as during a fire, a rapid temperature rise can be suppressed, and at the same time, the dehydration (evaporation, etc.) action in the heat absorption layer can be inhibited, and sufficient heat absorption performance can be exhibited.

[0029] The composition for the decorative layer may contain components (additives) other than the above, if necessary, as long as the effects of the present invention are not significantly impaired. Examples of such components include plasticizers, algaecides, antibacterial agents, deodorants, adsorbents, flame retardants, thickeners, defoamers, crosslinking agents, bright pigments, phosphorescent pigments, fluorescent pigments, aggregates, fibers, ultraviolet absorbers, light stabilizers, antioxidants, catalysts, etc.

[0030] The decorative layer (decorative sheet) of the present invention may have an uneven pattern on its surface. The pattern of such a decorative layer is not particularly limited, and various shapes can be mentioned. For example, a stone-like pattern, a wood grain pattern, a joint pattern, etc. can be mentioned. Also, the thickness of the decorative layer is preferably 0.2 to 30 mm (more preferably 0.5 to 20 mm).

[0031] The method for manufacturing the decorative layer (decorative sheet) is not particularly limited. For example, a method of pouring a composition for the decorative layer into the inner surface of a mold and demolding after curing can be mentioned.

[0032] The decorative layer (decorative sheet) of the present invention may have a clear layer on its outermost surface for the purpose of surface protection (water resistance, weather resistance, etc.), stain prevention, etc. As the clear layer, a known clear paint can be used.

[0033] Also, the decorative layer (decorative sheet) may be composed only of a molded body of a mixture containing the above components and additives, but a fibrous sheet or the like may be laminated on the inside and / or the back surface of the decorative layer (decorative sheet). As such a fibrous sheet, for example, a known sheet containing organic fibers and / or inorganic fibers can be used. By using such a fibrous sheet, the strength of the decorative layer (decorative sheet) can be increased.

[0034] In the laminate of the present invention, a plurality of heat absorption layers are arranged in parallel with a space on the back surface side of the decorative layer. FIG. 1 shows an example (cross-sectional view) of the laminate of the present invention. FIG. 2 is a perspective view of the laminate of FIG. 1. In the laminate of FIGS. 1 and 2, four heat absorption layers 21 to 24 are arranged in parallel with a space on the back surface side of the decorative layer 3. The heat absorption layers 21 to 24 are each a plate material having a quadrangular shape (square or rectangle) in a front view. The decorative layer 3 is a sheet having a quadrangular shape (rectangle) in a front view. The decorative layer 3 and the heat absorption layers 21 to 24 are bonded via an adhesive layer 4.

[0035] The interval between the heat absorption layers can be appropriately set according to, for example, the size of the base material, the coating method on the base material, etc.

[0036] In the laminates of FIGS. 1 and 2, four heat absorption layers are arranged side by side. However, in the present invention, at least two or more heat absorption layers may be arranged side by side.

[0037] In the laminates of FIGS. 1 and 2, the decorative layer 3 extends in one direction beyond the right end of the heat absorption layer 24. The decorative layer extending beyond the end of the heat absorption layer in this way can cover the side surface of the lower heat absorption layer, or the side surface or surface of an adjacent laminate. As a result, it becomes possible to sufficiently obtain effects such as aesthetic appearance, workability, and heat resistance protection. It is desirable that the length of the decorative layer extending beyond the end of the heat absorption layer is equal to or greater than the thickness of the lower heat absorption layer or the thickness of an adjacent laminate. The decorative layer extending beyond the end of the heat absorption layer can also be appropriately cut when forming the covering structure.

[0038] In the laminate of the present invention, by laminating a heat foaming layer, even more excellent heat resistance protection can be imparted. The heat foaming layer can be provided, for example, on the back side of the heat absorption layer or between the heat absorption layer and the decorative layer. In the present invention, it is preferable to provide the heat foaming layer between the heat absorption layer and the decorative layer.

[0039] As the heat foaming layer, when the ambient temperature rises due to a fire or the like and the temperature of the heat foaming layer reaches a predetermined foaming temperature, a material that foams by the action of each raw material constituting the heat foaming layer and forms a carbonized heat insulation layer can be used. The heat foaming layer can be formed, for example, by a heat foaming sheet or the like.

[0040] The foaming temperature of the heat foaming layer is preferably 150°C or higher, more preferably 180°C or higher, and even more preferably 200 to 400°C from the viewpoint of temperature rise due to flames or heat.

[0041] The heat foaming layer is preferably composed of a mixture of components containing a resin component, a flame retardant, a foaming agent, a charring agent, and a filler as constituent components. Among these, examples of the resin component include thermoplastic resins such as acrylic resin, acrylic styrene resin, vinyl acetate resin, and ethylene vinyl acetate resin. Examples of the flame retardant include ammonium polyphosphate, etc., and examples of the foaming agent include melamine, dicyandiamide, azodicarbonamide, etc. Also, examples of the charring agent include pentaerythritol, dipentaerythritol, etc., and examples of the filler include titanium dioxide, calcium carbonate, inorganic fibers, etc. These components can be used singly or in combination of two or more.

[0042] In terms of heat resistance protection and other aspects, the mixing ratio (weight ratio) of each component constituting the heat foaming layer is preferably 200 to 600 parts by weight of the flame retardant, 40 to 150 parts by weight of the foaming agent, 40 to 150 parts by weight of the charring agent, and 50 to 160 parts by weight of the filler with respect to 100 parts by weight of the resin component in terms of solid content conversion.

[0043] As the heat foaming sheet used for the heat foaming layer, it is possible to use a sheet-shaped product formed by molding a mixture containing the above components and various additives as required.

[0044] The additives that can be used in the mixture for forming the heat foaming layer may be those that do not significantly inhibit the effects of the present invention. Examples include pigments, fibers, wetting agents, plasticizers, lubricants, preservatives, fungicides, algicides, antibacterial agents, thickeners, dispersants, defoaming agents, crosslinking agents, ultraviolet absorbers, light stabilizers, antioxidants, diluting solvents, etc.

[0045] The thickness of the heat foaming layer may be appropriately set according to the use and the like. From the viewpoints of heat resistance protection, light weight, etc., it is preferably 0.1 to 10 mm, more preferably 0.3 to 8 mm, and even more preferably 0.5 to 6 mm.

[0046] The heat foaming layer may be composed only of a molded body of a mixture containing the above components and additives, or may be one in which a fibrous sheet or the like is laminated on the front or back surface of the heat foaming layer. As such a fibrous sheet, for example, a known sheet containing organic fibers and / or inorganic fibers can be used.

[0047] In the present invention, for example, each layer can be bonded using an adhesive or the like. As the adhesive, for example, known adhesives such as water-dispersible, water-soluble, and solvent-based adhesives mainly made of acrylic resin, silicone resin, epoxy resin, vinyl resin, phenolic resin, polyester resin, urethane resin, paraffin, etc. can be used. Additives such as flame retardants, foaming agents, carbonizing agents, and fillers, which are blended in the above-mentioned heat-foaming layer as required, can be blended in the adhesive. In the present invention, the adhesive also includes an adhesive material.

[0048] In the present invention, by laminating the heat absorption layer and the heat foaming layer via an adhesive layer, when the heat foaming layer foams to form a carbonized heat insulation layer, it is possible to exhibit performance such as maintaining the shape of the carbonized heat insulation layer and preventing it from falling off, and it is possible to stably obtain effects such as heat resistance protection.

[0049] In the laminate of the present invention, a heat reflection layer can be further laminated. By laminating the heat reflection layer, a heat shielding action and the like are exerted, and the heat resistance protection can be enhanced. The heat reflection layer can be provided, for example, on the back surface side of each heat absorption layer, the back surface side of the heat foaming layer, or the front surface side of the heat foaming layer.

[0050] As the heat reflective layer, for example, a metal plate, sheet, tape, etc. with high heat reflectivity can be used. Examples of the metal constituting the heat reflective layer include aluminum, copper, silver, etc., among which aluminum is preferable. Specifically, examples of the heat reflective layer include aluminum foil, aluminum tape, aluminum cloth, an aluminum foil / glass nonwoven fabric laminated sheet, an aluminum foil / mesh laminated sheet, an aluminum foil / glass cloth composite sheet, an aluminum foil / synthetic resin laminated sheet, etc. For example, when using aluminum tape, a tape having an adhesive layer formed on one side of the aluminum layer can be used. These can be used alone or in combination of two or more kinds.

[0051] From the viewpoints of heat reflectivity, heat resistant protection, light weight, etc., the thickness of the heat reflective layer is preferably 0.01 to 1 mm, more preferably 0.02 to 0.5 mm, and still more preferably 0.03 to 0.3 mm.

[0052] [Coating structure] In the present invention, a coating structure can be obtained by coating the periphery of a substrate using the above laminate.

[0053] Examples of the substrate include columns, beams, etc. that constitute structures such as buildings and civil engineering structures. Examples of such substrates include those made of materials such as cement-based materials, plastics, wood materials, metals, etc. The shape of these substrates is preferably long, and examples of the cross-sectional shape include circular, polygonal (such as quadrilateral).

[0054] In the present invention, the laminate is installed on the base material such that the heat absorption layer side of the laminate faces the base material and the decorative layer side faces outward. The laminate can be installed on the base material using, for example, fixtures such as nails, screws, tacks, pins, bolts, staples, or adhesive materials such as gypsum-based or cement-based adhesives. Thereby, a coating structure in which at least the heat absorption layer and the decorative layer are sequentially laminated on the base material can be efficiently obtained, which is advantageous in terms of workability. And by laminating each layer in the above order, excellent design (aesthetic appearance) and excellent effects in terms of heat resistance protection, etc. are exhibited, and a decrease in the strength of the base material can be suppressed. Furthermore, by laminating a heat foaming layer, the effect of suppressing the temperature rise due to heat such as a fire is further enhanced, and the effects such as heat resistance protection can be stably obtained.

[0055] The joints between laminates (the portions where the laminates contact each other) can be appropriately processed. Examples of such joint processing methods include a method of covering (straddling) the joints with a heat foaming coating material, a heat foaming sheet, etc., a method of filling the joints with a heat foaming putty material, etc., and a method of installing a fibrous reinforcing material so as to straddle the joints. These processing methods can also be combined in two or more kinds. The heat foaming layer, fibrous reinforcing material, etc. straddling the joints can be flattened by, for example, processing such as heating and pressing.

[0056] In the longitudinal direction of the base material, the laminates can be butted against each other so as to be adjacent. The joints between the laminates can be processed as necessary. As the joint processing method, the above-described methods, etc. can be adopted.

[0057] The coating structure of the present invention can be applied to applications that require heat resistance protection in various fields such as architecture and civil engineering. When used as a building material, for example, it can be applied to columns, beams, etc. The coating structure of the present invention can exhibit heat resistance protection (fire resistance) that satisfies predetermined conditions in a test defined in JIS A1304:2017, for example. Such performance can be appropriately adjusted by, for example, selecting the types of each layer, the lamination mode, the thickness, etc.

[0058] [Specific Example 1] Figure 3 shows an example (cross-sectional view) of the coating structure of the present invention. In the coating structure of Figure 3, a long rectangular substrate is coated using the laminate of Figures 1 and 2. Specifically, in the coating structure of Figure 3, in a cross-sectional view, the heat absorption layers 21 to 24 are each installed such that the laminate 1 is along the outer sides of the four sides of the substrate 6 (rectangular substrate). In the laminate 1, the thicknesses of the heat absorption layers 21 to 24 are the same. The sizes of the heat absorption layers 21 to 24 are equal to the length of one side of the rectangular substrate. Here, the size referred to is the length in the direction along the side of the substrate in a cross-sectional view.

[0059] At the corners (upper right corner, lower right corner, and lower left corner) of the substrate 6, the decorative layer 3 is bent, whereby the heat absorption layers 21 to 24 are installed along the outer sides of the four sides. At each corner, a triangular space is provided in a cross-sectional view. At the upper left corner of the substrate 6, the laminate 1 of Figure 1 makes a full turn, and the left end and the right end of the laminate 1 are in contact. Such joints between the laminates can be appropriately processed by the above-described methods or the like. Specifically, the joints of the decorative layer are preferably appropriately processed, for example, with an adhesive, coating material, putty material, etc. of the same color system as the decorative layer.

[0060] In the coating structure of Figure 3, the entire periphery of the rectangular substrate is covered by the laminate of the heat absorption layer and the decorative layer. By using, for example, a decorative one such as a wood grain finish or a sandstone finish as the decorative layer, the aesthetic property can be enhanced. Such a structure is excellent in design (aesthetic property) during normal times, and when exposed to high temperatures due to a fire or the like, the decorative layer 3 exhibits heat reflectivity and heat resistance, and further, the heat absorption layer 2 exhibits a heat absorption effect, thereby suppressing the temperature rise of the substrate 6 and maintaining its strength.

[0061] In Figure 3, at each corner, a triangular space is provided in a cross-sectional view, but a corner material (wet or dry), for example, can also be provided in this space. As the corner material, for example, the same material as the heat absorption layer can be used. Also, at each corner, the decorative layer can be installed along the side surface of the heat absorption layer without providing the above space.

[0062] [Specific Example 2] Another example (cross-sectional view) of the coating structure using the laminate of FIGS. 1 and 2 is shown in FIG. 4. Specifically, in the coating structure of FIG. 4, in a cross-sectional view, the laminate of FIGS. 1 and 2 is installed along the outer sides of the four sides of the base material 6 (square base material). In the laminate 1 of FIG. 4, the thicknesses of the heat absorption layers 21 to 24 are the same, and the sizes of the heat absorption layers 21 to 24 are equal to the sum of the length of one side of the square base material and the thickness of the adjacent heat absorption layer.

[0063] At the corners of the base material 6 (square base material), the back surface of one heat absorption layer is in contact with the side surface of the other heat absorption layer. Specifically, at the upper right corner, the side surface of the heat absorption layer 21 is in contact with the back surface of the heat absorption layer 22. At the lower right corner, the side surface of the heat absorption layer 22 is in contact with the back surface of the heat absorption layer 23. At the lower left corner, the side surface of the heat absorption layer 23 is in contact with the back surface of the heat absorption layer 24. At the upper left corner, the side surface of the heat absorption layer 24 is in contact with the back surface of the heat absorption layer 21.

[0064] At the upper left corner of the base material 6, the laminate 1 of FIG. 1 makes a full circle, and the left end and the right end of the laminate 1 are in contact. Such joints of the laminate can be appropriately processed by the above-mentioned methods and the like.

[0065] The coating structure of FIG. 4 is excellent in design (aesthetic appearance) during normal times. When exposed to high temperatures due to a fire or the like, the decorative layer 3 exhibits heat reflectivity and heat resistance, and further, the heat absorption layer 2 exhibits a heat absorption effect, thereby suppressing the temperature rise of the base material 6 and maintaining its strength.

[0066] [Specific Example 3] FIG. 5 shows another example (cross-sectional view) of the laminate of the present invention. In the laminate of FIG. 5, the heat absorption layer 2, the thermal foaming layer 5, and the decorative layer 3 are laminated in this order. In the laminate of FIG. 5, four heat absorption layers 21 to 24 are arranged in parallel at intervals on the back side of the thermal foaming layer 5. The heat absorption layers 21 to 24 are each a plate material having a quadrangular shape (square or rectangle) in a front view. The thermal foaming layer 5 is a sheet having a quadrangular shape (rectangle) in a front view, and the decorative layer 3 is a decorative sheet having a quadrangular shape (rectangle) in a front view. In the laminate of FIG. 5, the thermal foaming layer 5 and the heat absorption layers 21 to 24 are bonded via the adhesive layer 4. The decorative layer 3 can be laminated on the surface of the thermal foaming layer 5 via an adhesive layer or the like. Further, in the laminate of FIG. 5, the thermal foaming layer 5 and the decorative layer 3 extend in one direction beyond the right end of the heat absorption layer 24.

[0067] The laminate of FIG. 5 can form a covering structure in the modes of FIGS. 3, 4, etc., for example. The covering structure formed using the laminate of FIG. 5 is excellent in design (aesthetic appearance) during normal times, and when exposed to high temperatures due to a fire or the like, the thermal foaming layer 5 foams to form a carbonized heat insulation layer, and the heat absorption layer 2 exhibits a heat absorption effect, thereby suppressing the temperature rise of the base material 6 and maintaining its strength.

Claims

1. A laminate having a decorative layer, The laminate includes at least a heat absorbing layer and a decorative layer, The heat absorption layer is provided on the back surface side of the decorative layer in a direction parallel to the main surface of the decorative layer at intervals, The decorative layer is formed from a composition containing a resin component and a decorative powder or granule, and the glass transition temperature of the resin component is −60° C. to 60° C., A laminate comprising a thermal foaming layer laminated on the back side of the heat absorbing layer or between the heat absorbing layer and the decorative layer.

2. The laminate described in claim 1, characterized in that the thermal foam layer is made of a mixture containing a resin component, a flame retardant, a foaming agent, a carbonizing agent, and a filler.

3. The laminate described in claim 1, characterized in that the thickness of the thermally foamed layer is 0.1 to 10 mm.

4. A coating structure in which a substrate is surrounded by a laminate, A covering structure comprising the laminate according to any one of claims 1 to 3 as said laminate.

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