JP6545015B2 - Laminate - Google Patents

Description

  The present invention relates to a laminate capable of achieving excellent energy saving.

  In recent years, energy problems such as power supply problems have been highlighted, and the importance of tackling energy saving problems has further increased.

  For example, efforts to save energy are increasing also in living spaces such as houses and offices, and materials that contribute to energy saving are also required for building materials used in houses and offices.

  Conventionally, a heat insulating material is mentioned as a material which has contributed to energy saving. (For example, Patent Document 1 etc.)

JP 2007-56485

  However, in the heat insulation panel like the said patent document, the energy saving effect has a limit, and the material which can contribute to further energy saving is calculated | required recently.

  MEANS TO SOLVE THE PROBLEM This invention is a surface layer which forms the surface of a living space as a result of earnestly examining in order to solve the said subject, using the surface layer which has a through-hole 1 mm-10 mm in size with respect to the thickness direction. By using the laminated body by which the layer and the thermal storage layer were laminated | stacked, it discovered that the outstanding energy saving could be implement | achieved, and completed this invention.

That is, the present invention has the following features.
1. A laminate in which a surface layer and a heat storage layer are laminated,
The surface layer has a plurality of through holes in the thickness direction,
The through hole has a size of 1 mm or more and 10 mm or less,
The laminate has a through hole with a size of 1 mm or more and 10 mm or less in a thickness direction .
2. The thickness of the surface layer is 3 mm or more and 15 mm or less,
The thickness of the heat storage layer is 1 mm or more and 10 mm or less,
Characterized in that The laminated body as described in.
3. The heat storage layer is characterized in that two or more heat storage layers having different phase change temperatures are stacked. Or 2. The laminated body as described in.
4. The heat storage layer is formed by laminating two or more heat storage layers having different phase change temperatures, and the phase change temperature of the heat storage layer near the surface layer is the lowest. Or 2. The laminated body as described in.
5. A metal layer is laminated on one side or both sides of the heat storage layer. To 4. The laminated body in any one of.

  The laminate of the present invention can realize excellent energy saving.

It is a model figure of the laminated body structure of this invention. It is a model figure of the laminated body structure of this invention. It is a model figure of the laminated body structure of this invention. It is a model figure of the laminated body structure of this invention. It is a model figure of the laminated body structure of this invention. It is a model figure of the test example of this invention. 15 is a graph showing the test results of Example 5.

1-1, 1-2: Surface layer 2-1, 2-2, 2-3, 2-4: Heat storage layer 3-1: Metal layer 4: Foamed polystyrene foam 5: Infrared lamp 6: Thermocouple

  Hereinafter, modes for carrying out the present invention will be described in detail.

The surface layer used in the laminate of the present invention has a plurality of through holes in the thickness direction, and the through holes have a size of 1 mm or more and 10 mm or less.
When a plurality of such through holes are provided so that the surface layer is on the inner space (living space) side, the heat and cold of the living space on the surface layer side can be easily transmitted to the heat storage layer, and The stored heat and cold can be easily transmitted to the living space side, the heat conductivity can be improved, and excellent energy saving can be realized.
For example, when the cold stored in the night heat storage layer is used for cooling in the daytime, if the surface layer does not have a plurality of through holes, the cold diffuses outside the living space and the cooling efficiency to the living space In the case where the surface layer has a plurality of through holes, the movement of cold heat to the living space is smooth, the cooling efficiency is excellent, and excellent energy saving can be realized.

  As a through-hole of a surface layer, the size of the surface layer surface is 1 mm or more and 10 mm or less, more preferably 2 mm or more and 8 mm or less. With such a size, the heat conductivity of the heat storage layer and the living space is excellent, and the surface layer has sufficient strength. When the size is too small, the heat conductivity is poor, and when it is too large, the strength is poor.

  The surface shape of the through hole is preferably circular or elliptical, but may be polygonal. In the present invention, “size” indicates the diameter in the case of a circular shape, and the major diameter in the case of an elliptical shape. In the case of a triangle, the diameter of the circumscribed circle, in the case of a quadrangle, the major diameter, and in the case of a hexagon, the diameter of the circumscribed circle is shown.

  The through hole is not particularly limited as long as it penetrates in the thickness direction of the surface layer, but when the surface shape of the through hole is circular, the shape of the through portion (cross section) is cylindrical or truncated cone Is preferred. Moreover, when the surface shape of the through hole is elliptical, it is preferable that the shape of the through portion is an elliptic cylindrical shape or an elliptical truncated cone shape. The other polygons are similar.

  The surface layer has a plurality of through holes, but the arrangement may be regularly arranged in the surface layer or may be randomly arranged. Further, the size of the through holes may be an arrangement of through holes of the same size, or the through holes of different sizes may be arranged within the scope of the present invention.

  The proportion of the through holes on the surface layer surface is preferably 2% to 20%, and more preferably 3% to 15%. With such a ratio, the heat conductivity of the heat storage layer and the living space is excellent, and the surface layer has sufficient strength.

As a surface layer, a wood board, a slate board, a gypsum board, an ALC board, a calcium silicate board, a siding board etc., or a coating film etc. are mentioned, for example, 1 type or 2 or more types can be used among these.
The method for providing the through holes in such a surface layer is not particularly limited, and may be provided using a drill or the like. Further, the surface layer is preferably a surface layer having a thermal conductivity of 0.1 W / (m · K) or more and 1.0 W / (m · K) or less, which conducts heat to some extent.

  Moreover, the thickness of a surface layer can use suitably what is 3 mm or more and 15 mm or less (further more, 4 mm or more and 10 mm or less).

The heat storage layer used in the laminate of the present invention contains a heat storage material, one obtained by immobilizing the heat storage material with a resin, one obtained by encapsulating the heat storage material, one obtained by filling the heat storage material in a porous body, heat storage The material may be a bag, a case filled with a material, or a combination of these.
As the heat storage layer, one having a thickness of 1 mm or more and 10 mm or less (further, 2 mm or more and 7 mm or less) can be suitably used. With such a thickness, sufficient heat storage performance can be obtained, and a thin film can be realized.

  Examples of the heat storage material include an inorganic latent heat storage material and an organic latent heat storage material, and one or more of these heat storage materials can be used. In the present invention, organic latent heat storage materials such as aliphatic hydrocarbons, long chain alcohols, long chain fatty acids, long chain fatty acid esters, fatty acid triglycerides, and polyether compounds can be suitably used. The organic latent heat storage material is easy to set the phase change temperature according to the application, and for example, the phase change temperature can be easily set by mixing two or more organic latent heat storage materials having different phase change temperatures (melting points). Is possible. The phase change temperature of the heat storage layer of the present invention is determined by the phase change temperature (melting point) of the heat storage material used.

In particular, in the present invention, as the heat storage material, aliphatic hydrocarbons having 8 to 36 carbon atoms, long chain alcohols having 8 to 36 carbon atoms, long chain fatty acids having 8 to 36 carbon atoms, 8 to 36 carbon atoms It is preferred to use long chain fatty acid esters of
As an aliphatic hydrocarbon, for example, n-decane (melting point -30 ° C), n-undecane (melting point -25 ° C), n-dodecane (melting point -8 ° C), n-tridecane (melting point -5 ° C), pentadecane (Melting point 6 ° C), n-tetradecane (melting point 8 ° C), n-hexadecane (melting point 17 ° C), n-heptadecane (melting point 22 ° C), n-octadecane (melting point 28 ° C), n-nonadecane (melting point 32 ° C) And eicosane (melting point 36 ° C.), docosane (melting point 44 ° C.), and n-paraffin, paraffin wax and the like composed of a mixture thereof.
Examples of long chain alcohols include capryl alcohol (melting point 7 ° C.), lauryl alcohol (melting point 24 ° C.), myristyl alcohol (melting point 38 ° C.), stearyl alcohol (melting point 58 ° C.) and the like.
As long-chain fatty acids, for example, octanoic acid (melting point 17 ° C), decanoic acid (melting point 32 ° C), dodecanoic acid (melting point 44 ° C), tetradecanoic acid (melting point 50 ° C), hexadecanoic acid (melting point 63 ° C), octadecanoic acid Examples thereof include fatty acids such as (melting point 70 ° C.) and the like.
As long-chain fatty acid esters, for example, methyl laurate (melting point 5 ° C), methyl myristate (melting point 19 ° C), methyl palmitate (melting point 30 ° C), methyl stearate (melting point 38 ° C), butyl stearate (melting point) 25 ° C.), methyl arachidate (melting point 45 ° C.), and the like.

The heat storage layer in which the heat storage material is fixed with resin can be obtained by mixing the heat storage material and the resin and curing the resin.
Examples of the resin include acrylic resin, silicone resin, polyester resin, alkyd resin, epoxy resin, urethane resin, phenol resin, melamine resin, amino resin, polycarbonate resin, fluorocarbon resin, vinyl acetate resin, acrylic / vinyl acetate resin, acrylic · Solvent-soluble type such as urethane resin, acrylic silicone resin, silicone modified acrylic resin, ethylene vinyl acetate, vinyl versatate, vinyl ethylene resin, vinyl acetate resin, vinyl chloride resin, ABS resin, AS resin, synthetic rubber, etc. An NAD type, a water soluble type, a water dispersion type, a non-solvent type etc. are mentioned, 1 type or 2 types or more can be used among these.
In the present invention, it is preferable to use a resin that forms a crosslinked structure, such as polyol-isocyanate or amine-epoxy, and if such a resin is used, the heat storage material is supported and held within the crosslinked structure and fixed. You can get a layer.
In addition to heat storage materials and resins, clay minerals, surfactants, heat conductive substances, metal salt hydrates, compatibilizers, reaction promoters, flame retardants, pigments, aggregates, viscosity modifiers, plasticizers, buffers, Dispersing agent, crosslinking agent, pH adjuster, preservative, fungicide, antibacterial agent, algae reducing agent, wetting agent, antifoaming agent, foaming agent, leveling agent, pigment dispersant, antisettling agent, anti-sagging agent, freezing Mixing additives such as inhibitors, lubricants, dehydrating agents, matting agents, UV absorbers, antioxidants, light stabilizers, fibers, perfumes, chemical adsorbents, photocatalysts, moisture absorbing and releasing powders, etc. You can also.
In the present invention, it is particularly preferable to include a metal salt hydrate. By including the metal salt hydrate, excellent heat resistance can be exhibited while maintaining excellent heat storage properties. In addition, excellent thermal conductivity can also be imparted.
Examples of metal salt hydrates include hydrates of metal salts of metals and acids.
Examples of the metal include sodium, potassium, magnesium, calcium, strontium, titanium, zirconium, manganese, iron, cobalt, nickel, copper, zinc, aluminum and the like, and in the present invention, sodium and potassium are particularly selected 1 More than species are preferred.
Examples of the acid include silicic acid, boric acid, phosphoric acid, hydrochloric acid, sulfuric acid, sulfuric acid, nitric acid, carbonic acid, benzoic acid, phthalic acid, maleic acid, succinic acid, salicylic acid, citric acid and the like, and in the present invention, in particular, One or more selected from silicic acid, boric acid, phosphoric acid and carbonic acid are preferable.
The metal salt hydrate is preferably a metal salt · n-hydrate (n is an integer of 2 or more and 15 or less (preferably 3 or more and 12 or less)).

As a heat storage layer encapsulating a heat storage material, for example, a heat storage material and an unsaturated monomer are mixed, and the heat storage material is encapsulated by polymerizing the unsaturated monomer, and the capsule is fixed with a resin, A porous body can be filled, or a bag and a case can be filled to obtain a heat storage layer.
Examples of unsaturated monomers include (meth) acrylic monomers and aromatic vinyl monomers. One or more of these monomers can be used.
In addition to the heat storage material and the unsaturated monomer, additives such as an initiator, a surfactant, a buffer, a dispersant, a crosslinking agent, and a pH adjuster can also be mixed.

As the heat storage layer in which the heat storage material is filled in the porous body, the heat storage layer can be obtained by filling the heat storage material in the porous body by, for example, the immersion method, the pressure reduction / pressure injection method or the like.
The porous body is not particularly limited, and fiber materials, resin foam materials, wood materials and the like can be mentioned.

  As a heat storage layer which filled a heat storage material in a bag and a case, it can be obtained by, for example, filling the heat storage material in a known bag such as resin, rubber, metal or fiber, or a case.

In the present invention, it is preferable to use a heat storage layer in which the heat storage material is fixed with a resin in that the content ratio of the heat storage material is high and the molding and processing are easy.
Further, the content ratio of the heat storage material in the heat storage layer is preferably 30% by weight or more, further 40% by weight or more, and further 50% by weight or more and 90% by weight or less based on the total amount of the heat storage layer.

In the present invention, the heat storage material can be appropriately selected according to the application. For example, when using for a living space, what has melting | fusing point of a thermal storage material 15 to 40 degreeC vicinity may be used. In addition, when used as interior materials for vehicles, etc., the heat storage material has a melting point of about 15 ° C to 40 ° C, and when used for a refrigerator, the heat storage material having a melting point of 0 ° C to 15 ° C is used for the freezer In the case where the heat storage material has a melting point of about -30 ° C to -10 ° C, it may be used.
Moreover, in selection of a thermal storage material, only 1 type of thermal storage material may be sufficient, and 2 or more types of thermal storage materials from which melting | fusing point differs can also be mixed and selected.

The heat storage layer may be a stack of two or more heat storage layers having different phase change temperatures, or a stack of two or more heat storage layers having different phase change temperatures. As described above, by stacking or arranging the heat storage layers having different phase change temperatures, it is possible to store heat in a wide temperature range, and it is possible to exhibit the energy saving effect more efficiently.
Among these, in the case where two or more layers are stacked, it is particularly preferable that the phase change temperature of the heat storage layer near the surface layer is the lowest. By laminating in this manner, the cold heat of the internal space (residential space) on the surface layer side can be easily stored in the heat storage layer near the surface layer, making it difficult to diffuse the cold heat to the outside, and heat storage other than the heat storage layer near the surface layer The layer can store external heat to suppress movement to the internal space (living space), and can achieve excellent cooling efficiency and excellent energy saving.
In the present invention, it is preferable to stack two heat storage layers having different phase change temperatures. When using it for a living space, the phase change temperature of the heat storage layer near the surface layer is around 15 ° C to 35 ° C, and the phase change temperature of the heat storage layer far from the surface layer is around 25 ° C to 40 ° C Preferably, the difference between the phase change temperatures of the two heat storage layers is 3 ° C. or more, more preferably 5 ° C. or more.
Moreover, when using as interior materials, such as a vehicle, that whose phase change temperature of a thermal storage layer is 15 degreeC-35 degreeC vicinity, and whose phase change temperature is 25 degreeC-40 degreeC vicinity can be used.
In addition, when used in a refrigerator, the phase change temperature of the heat storage layer is around 0 ° C to 15 ° C, the phase change temperature is around 10 ° C to 25 ° C, and when used in a freezer, the phase change temperature of the heat storage layer The thing of -30 degreeC-about -10 degreeC, and the thing whose phase change temperature is -20 degreeC-about 0 degreeC can be used.

  When two heat storage layers are laminated, the total thickness of the heat storage layer is preferably 1 mm or more and 10 mm or less (more preferably 2 mm or more and 7 mm or less). The thickness of each layer may be different or the same, and is preferably 0.5 mm or more and 5 mm or less (more preferably 1 mm or more and 3.5 mm or less).

In the present invention, the surface layer and the heat storage layer are stacked, and the stacking method is not particularly limited.
For example, a method of laminating and laminating a surface layer and a heat storage layer manufactured in advance with an adhesive or the like,
A layered product can be obtained by laminating a component (heat storage layer precursor) for forming the heat storage layer on one surface of the surface layer, and forming the heat storage layer on the surface layer, or the like.
Moreover, when manufacturing a laminated body or after laminated body manufacture, a protective layer can also be laminated | stacked so that a thermal storage material may not leak out from a through-hole. Examples of the protective layer include resin films such as nylon, polyester, polyethylene terephthalate, vinylidene chloride, ethylene / vinyl acetate copolymer, woven fabric, non-woven fabric, glass cloth, etc. More than species can be used in combination. The thickness of the protective layer is preferably 0.01 mm or more and 3 mm or less (more preferably 0.03 mm or more and 1 mm or less).

In the present invention, it is essential to have through holes in the surface layer, but it is also possible to have a plurality of through holes with a size of 1 mm or more and 10 mm or less in the thickness direction in the entire laminate including the surface layer and the heat storage layer. .
For example, a heat storage layer in which a heat storage material is immobilized using a resin that forms a crosslinked structure such as polyol-isocyanate or amine-epoxy as the heat storage layer leaks the heat storage material even if the heat storage layer has through holes. Can be suppressed and is preferably used.

In the present invention, it is preferable that a metal layer be further laminated on one side or both sides of the heat storage layer. The metal layer can impart an effect of further enhancing the heat conduction, an effect of protecting the heat storage layer, a fire and flameproof effect, a radiant heat reflection effect and the like.
For example, in the case where a metal layer is laminated between the surface layer and the heat storage layer, it is possible to impart an effect of further enhancing heat conduction, an effect of protecting the heat storage layer, and a fire and flameproof effect. Moreover, when the metal layer is laminated | stacked on the back side of the laminated body, it is possible to provide the effect which protects a thermal storage layer, a fire prevention / flameproof effect, a radiant heat reflection effect, etc.

Examples of such a metal layer include metal layers containing metal materials such as copper, aluminum, iron, brass, zinc, magnesium, nickel and the like, and in the present invention, in particular, one selected from copper, aluminum and iron. The metal layer containing the above metal material can be used suitably.
The metal layer may be a laminate of a resin film such as nylon, polyester, polyethylene terephthalate, vinylidene chloride, ethylene / vinyl acetate copolymer, etc., a material such as woven fabric or non-woven fabric, glass cloth, etc. and the above metal material. . For example, a metal deposition film in which a metal is deposited on a resin film, a metal film in which a metal foil is stacked on a resin film or glass cloth, a resin film, a woven or nonwoven fabric, and a composite metal sheet in which metal particles are buried in the glass cloth And the like, and one or more of these may be used in combination.
The thickness of the metal layer is preferably 0.01 mm or more and 3 mm or less (preferably 0.02 mm or more and 1.5 mm or less, more preferably 0.05 mm or more and 1.0 mm or less). A metal layer of such a thickness can be suitably used from the viewpoint of heat storage, heat radiation efficiency, and weight reduction. Moreover, it is suitable also for the improvement of a radiation heat reflection effect and a flameproof effect. Also, the metal layer surface may be subjected to some surface treatment.

About the laminated body of this invention, an example of the form for implementing is shown in FIGS. 1-5.
The surface layer 1-1 shown in FIG. 1 is a calcium silicate plate having a thickness of 6 mm, and the through holes have a diameter of 4 mm, a circular shape, and the ratio of the through holes in the surface layer 1-1 is 4.9%.
The heat storage layer 2-1 shown in FIG. 1 comprises 70 parts by weight of a heat storage material (methyl palmitate (melting point 30 ° C.)), 20 parts by weight of polyether polyol, 0.5 parts by weight of catalyst (dibutyltin laurate), additives (clay Mineral, surfactant (5.5 parts by weight) was mixed and stirred, 4 parts by weight of hexamethylene diisocyanate was further added and stirred, and formed on a 50 μm thick polyethylene terephthalate film (content ratio of heat storage material: 70 weight) %). The thickness of the heat storage layer 2-1 is 3 mm.
FIG. 1A shows a form before lamination, and FIG. 1B shows a form after lamination.

The surface layer 1-2 shown in FIG. 2 is a gypsum board having a thickness of 6 mm, and the through holes have a diameter of 4 mm, a circular shape, and the ratio of the through holes in the surface layer 1-2 is 8.7%.
The heat storage layer 2-2 shown in FIG. 2 comprises 70 parts by weight of a heat storage material (methyl palmitate (melting point 30 ° C.)), 20 parts by weight of polyether polyol, 0.5 parts by weight of catalyst (dibutyltin laurate), additives (clay Mineral, surfactant (5.5 parts by weight) was mixed and stirred, 4 parts by weight of hexamethylene diisocyanate was further added and stirred, and formed on a 50 μm thick polyethylene terephthalate film (content ratio of heat storage material: 70 weight) %). The thickness of the heat storage layer 2-2 is 2 mm.
The heat storage layer 2-3 shown in FIG. 2 comprises 70 parts by weight of a heat storage material (methyl stearate (melting point 38 ° C.)), 20 parts by weight of polyether polyol, 0.5 parts by weight of catalyst (dibutyltin laurate), additives (clay Mineral, surfactant (5.5 parts by weight) was mixed and stirred, 4 parts by weight of hexamethylene diisocyanate was further added and stirred, and formed on a 50 μm thick polyethylene terephthalate film (content ratio of heat storage material: 70 weight) %). The thickness of the heat storage layer 2-3 is 2 mm.
FIG. 2A shows the form before lamination, and FIG. 2B shows the form after lamination.

The surface layer 1-1 shown in FIG. 3 is a calcium silicate plate having a thickness of 6 mm, and the through holes have a diameter of 4 mm, a circular shape, and the ratio of the through holes in the surface layer 1 is 4.9%.
The heat storage layer 2-4 shown in FIG. 3 comprises 70 parts by weight of a heat storage material (methyl palmitate (melting point 30 ° C.)), 20 parts by weight of polyether polyol, 0.5 parts by weight of catalyst (dibutyltin laurate), additives (clay Mineral, surfactant (5.5 parts by weight) was mixed and stirred, 4 parts by weight of hexamethylene diisocyanate was further added and stirred, and formed on a 50 μm thick polyethylene terephthalate film (content ratio of heat storage material: 70 weight) %). The thickness of the heat storage layer 2-4 is 3 mm, the through hole has a diameter of 4 mm, a circular shape, and the ratio of the through hole in the heat storage layer 2-4 is 4.9%.
The metal layer 3-1 shown in FIG. 3 is an aluminum sheet with a thickness of 0.1 mm.
FIG. 3A shows the form before lamination, and FIG. 3B shows the form after lamination.

The metal layer 3-1 shown in FIG. 4 is an aluminum sheet with a thickness of 0.1 mm.
The surface layer 1-1, the heat storage layer 2-2, and the heat storage layer 2-3 are as described above.
FIG. 4A shows a form before lamination, and FIG. 4B shows a form after lamination.

The metal layer 3-1 shown in FIG. 5 is an aluminum sheet with a thickness of 0.1 mm.
The surface layer 1-1, the heat storage layer 2-2, and the heat storage layer 2-3 are as described above.
FIG. 5A shows the form before lamination, and FIG. 5B shows the form after lamination.

  Although an experiment example is shown below and the feature of the present invention is clarified more, the present invention is not limited to this experiment example.

(Experimental example 1)
As shown in FIG. 6, a frame is assembled using expanded polystyrene foam (thickness 30 mm) so that the inner dimension is 280 mm high × 280 mm wide × 280 mm deep, and the laminate shown in FIG. The test specimen box was made as follows. A space of 10 mm was provided between the top surface of the laminate and the expanded polystyrene foam. Furthermore, a thermocouple was installed to measure the temperature of the surface layer surface and the temperature of the center of the test object box.
In the experiment, an infrared lamp was irradiated for 3.5 hours from the position of 220 mm on the upper surface of the test object box, and the temperature of the surface layer surface and the temperature (space temperature) at the center of the test object box were measured.
In addition, only the surface layer was measured as a blank instead of this invention laminated body.
As a result, the surface layer surface temperature after one hour was 3.0 ° C. lower than that of the blank. In addition, the space temperature after one hour was 0.5 ° C. lower than that of the blank.

(Experimental example 2)
The same test as in Test Example 1 was conducted except that the laminate in FIG. 2 was used instead of the laminate in FIG.
As a result, the surface layer surface temperature after one hour was 4.0 ° C. lower than that of the blank. In addition, the space temperature after one hour was 0.9 ° C. lower than that of the blank.

(Experimental example 3)
The same test as in Test Example 1 was conducted except that the laminate in FIG. 3 was used instead of the laminate in FIG.
As a result, the surface layer surface temperature after one hour was 4.5 ° C. lower than that of the blank. In addition, the space temperature after 1 hour was lower by 1.0 ° C. compared to the blank.

(Experimental example 4)
The same test as in Test Example 1 was conducted except that the laminate in FIG. 4 was used instead of the laminate in FIG.
As a result, the surface layer surface temperature after one hour was 5.5 ° C. lower than that of the blank. In addition, the space temperature after 1 hour was lower by 1.6 ° C. compared to the blank.

(Experimental example 5)
The same test as in Test Example 1 was conducted except that the laminate in FIG. 5 was used instead of the laminate in FIG.
The results are as shown in FIG. 7. The temperature rise on the surface layer surface and the space temperature were both suppressed as compared to the blank. For example, the surface layer surface temperature after one hour was 7.7 ° C. lower than that of the blank. In addition, the space temperature after one hour was 2.3 ° C. lower than that of the blank.

The laminate of the present invention is, for example, as shown in FIGS. 1 to 5, and is used for wall materials of buildings such as houses, ceiling materials, interior and exterior materials such as floorings, partitions, partitions, doors, doors, vehicles, etc. It can be applied as a material used for interior materials, refrigeration / freezers, vending machines, baths / baths, greenhouses, cooler boxes etc. In addition to the above-mentioned living space, it is also effective as a material for keeping warm the interior of a refrigerator / freezer, a vending machine, a bath / bath, a greenhouse, a cooler box and the like.

Claims (5)

A laminate in which a surface layer and a heat storage layer are laminated,
The surface layer has a plurality of through holes in the thickness direction,
The through hole has a size of 1 mm or more and 10 mm or less,
The laminate has a through hole with a size of 1 mm or more and 10 mm or less in a thickness direction . The thickness of the surface layer is 3 mm or more and 15 mm or less,
The thickness of the heat storage layer is 1 mm or more and 10 mm or less,
The laminate according to claim 1, wherein   The layered product according to claim 1 or 2, wherein two or more heat storage layers having different phase change temperatures are stacked in the heat storage layer.   The heat storage layer is formed by laminating two or more heat storage layers having different phase change temperatures, and the phase change temperature of the heat storage layer near the surface layer is the lowest. The laminated body as described in. The metal layer is laminated | stacked on the single side | surface or both surfaces of the said thermal storage layer, The laminated body in any one of the Claims 1-4 characterized by the above-mentioned.