JP2003336981A - Heat storage material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe heat storage material which has the excellent sealing ability in relation to the oil-based material having the heat storage property with a phase change and which has the high-temperature durability, and which is used for a system for temporarily storing the heat formed by arranging a heat storage equipment at a part of a building and locating a plurality of heat storage devices to save the air conditioning energy for a large building such as an office building and a factory and for a home use, to improve efficiency, and to protect environment. <P>SOLUTION: This heat storage material is formed by sealing the heat storage composition containing an oil-based material having the heat storage property with a phase change as an indispensable component in an enclosing material, and the enclosing material has a base material layer, a liquid resin layer and a sealant layer in this order from outside. <P>COPYRIGHT: (C)2004,JPO

Description

Description: TECHNICAL FIELD [0001] The present invention relates to a heat storage material.
More specifically, the heat storage material composition is enclosed in a packaging material.
Regarding heat materials. [0002] For large buildings such as office buildings and factories,
Energy saving and efficiency of cooling and heating energy for home use, environmental protection
For the purpose of protection, a heat storage facility will be
For building air conditioning, the size is about 4 or 5 meters square.
Temporary storage of heat by installing multiple heat storage devices
The system that does it is drawing attention. Such a heat storage device
Is a heat storage material with a side of several cm to several tens cm in the device
And a medium such as circulating water that mediates heat
Phase change of heat storage material by energy such as electric power
To release heat during the phase change from solid to liquid
And the latent heat of absorbing heat during the phase change from liquid to solid
To use. For example, cooling heat storage material with nighttime electricity
Solidify and use the heat absorption effect during melting for daytime cooling
It is assumed that. [0003] The heat storage material constituting the heat storage material includes
Slate, mixture of ethylene glycol and water, carbon number
A paraffin mixture of about 10 to 20;
Those that are cooled and solidified at about 4 ° C and have a large heat of fusion
It is preferred. Such a heat storage material was filled
In the heat storage device, the heat storage device is guided from the water pipe (entrance).
The medium, such as the circulating water, is guided through the gap between the filled heat storage materials.
It moves while being exchanged heat by passing, and the heat storage device
Heat is stored in a state where heat is sufficiently exchanged at the water pipe (outlet)
Exit the device and circulate through the pipeline and inside the building
Will be. [0004] Such a heat storage material has a heat storage property due to a phase change.
Encapsulating organic or inorganic substances with
Manufacturing is being considered. As packaging materials,
(1) Multi-layer laminate film, (2) Hard film such as PVC
Plastic containers, (3) metal containers and the like.
By using (2) and (3), the productivity and filling property of the container are reduced.
Is not enough and could be expensive?
Therefore, it is desirable to use (1). However,
Heating material may be immersed in warm water of 60 ° C or higher,
For films laminated using adhesives, etc., in a high temperature environment
May cause problems such as peeling between film layers.
Therefore, there is room for devising so that durability is more sufficient.
there were. On the other hand, inorganic substances that have heat storage due to phase change
When using organic materials, compared to when using organic substances,
Although these problems are few, generally known inorganic hydration
Salts are supercooled and prevent solidification even below the melting point.
Damage, and the heat density radiated significantly decreases.
There was a usage problem. [0005] As an example of devising a heat storage material, for example,
JP-A-58-108391 discloses that latent heat storage material is flexible.
Heat storage structure filled in a tubular container made of sibble sheet material
JP-A-57-65584 discloses a heat storage tank,
JP-A-58-107123 incorporates a latent heat storage agent
Vinyl container covering the sealed cylindrical container with multi-film
Mouse cultivation method, JP 59-41792 A
Of a hollow body that has been sealed and polymerized around a conductive resin or sheet.
A container for filling a heating agent is disclosed in JP-A-59-145489.
It has a heat storage body that contains a heat storage material in a film and its support means.
Heat storage tank, JP-A-60-40046 and JP-A-60-60046
Japanese Patent Publication No. 0-88550 discloses a flexible material in which a heat storage material is sealed.
A non-volatile container is disclosed in JP-A-60-235994.
The film is joined leaving the injection port, and the latent heat storage material is
After filling and sealing, wash the area around the injection port and
Patent application title: Method for Sealing Latent Heat Storage Material Container Sealing Side
JP-A-240095 discloses a latent heat storage material having a flexible container.
Heat storage element accommodated in
In the publication, a storage bag of PET / NY (nylon) / PP,
JP-A-8-94269 discloses a cylindrical heat storage capsule.
No. 3,136,330 discloses a flexible plastic.
A heat storage device including a heat storage container and a heat storage agent is disclosed. However, it has heat storage properties due to phase change.
Packaging material using organic materials
Performance and durability of heat storage materials when manufacturing heat storage materials
It is desired to improve
However, in the technology disclosed in these publications,
The durability of the multilayer laminate film forming the heat storage material
Has not been sufficiently studied,
There was room for ingenuity. [0007] Japanese Patent Application Laid-Open No. 2001-261174 discloses a thermal method.
A sealant layer made of a weldable synthetic resin
Heat storage laminated on a substrate layer made of synthetic resin different from
An agent container sheet is disclosed. However, this
In the production of heat storage agent container sheets,
It is acceptable to use a tan-based adhesive or an epoxy-based adhesive.
Therefore, durability in high temperature environment is not enough,
Extra effort to ensure high-temperature durability and excellent safety
There was earth. In addition, the sealing property and high-temperature durability of oily substances are improved.
From the viewpoint of improvement, each layer in the heat storage agent container sheet
The base layer and the sealant while ensuring that the
Layer so that it is sufficiently melt-bonded
Avoid deformation such as elongation of the sealant layer when preparing a heat-resistant film.
And improved adhesion during fusion bonding.
To make it possible to
There was room. SUMMARY OF THE INVENTION [0008]
It is made in view of the fact that it has heat storage properties by phase change
Excellent sealing performance for oily substances and high temperature durability
The purpose is to provide a heat storage material. Means for Solving the Problems The present inventors have developed a heat storage property.
Packaging material containing a heat storage material composition containing an oily substance as an essential component
After examining various heat storage materials enclosed in
In the device, it is composed of a base material layer and a sealant layer.
And these layers are bonded by an adhesive such as polyurethane.
After filling the heat storage material composition into the
When the heat-sealed heat storage material is used, the base material layer has water resistance and
Even if it has oil resistance, its durability at high temperatures is not enough, and it is used
Focusing on occasional delamination, more sufficient durability
To apply heat to the heat storage material,
The interface between the base material layer and the sealant layer to the molten resin layer.
More fusion bonding fixes the layers and causes delamination
I found that it would be better to have a difficult structure. I.e.
Water and oil resistant polyethylene terephthalate
(PET), PET, adhesive and sealant layer
The heat storage material composition is enclosed in a packaging material having
Immersed in warm water of 60 ° C or higher
Causes problems such as peeling between film layers.
Is not durable, but the adhesive
When a molten resin layer is used, it can be used as a heat storage material.
To prevent peeling between film layers
However, to be able to solve the above issues brilliantly
Having arrived at the present invention, the present invention has been achieved. That is, the present invention provides a heat storage property by a phase change.
Packaging material containing a heat storage material composition containing an oily substance as an essential component
A heat storage material sealed in the base material, wherein the packaging material is a base material
Layer, molten resin layer and sealant layer in this order from the outside.
It is a heat storage material. Hereinafter, the present invention will be described in detail. First, a packaging material for forming the heat storage material of the present invention is used.
explain about. The packaging material in the present invention has a heat storage material composition
The inside is in contact with the heat storage material composition, and the outside is heat storage
It comes into contact with circulating water and other media in the device,
Of the base layer as the outermost layer and the sealant layer as the innermost layer
To have a molten resin layer between these layers.
In addition, as long as these layers are essential, they have other layers.
Each layer may be a single layer or multiple layers.
No. The above-mentioned base material layer is formed as an exterior of a packaging material.
Layer with a barrier film against water and oil.
More preferably, for example, low density polyethylene (LDPE), medium
High density polyethylene (MDPE), high density polyethylene
(HDPE), linear low density polyethylene (LLDP)
Polyethylene (PE) such as E); undrawn polypropylene
(CPP), biaxially oriented polypropylene (OPP), etc.
Propylene (PP); poly-1-butene, α-olefin
Polyolefins such as olefin polymers and α-olefin copolymers
Polyethylene terephthalate (PET), polybutylene
Polyester such as lentephthalate (PBT); poly
Oxymethylene (PO), polycarbonate (PC), etc.
Polyethers; polyamides such as nylon (NY) (P
A); polystyrene (PS); polyvinyl chloride (PV)
C), polyvinylidene chloride (PVDC);
Alcohol (PVA); ethylene-vinyl acetate copolymer
(EVA), ethylene-vinyl alcohol copolymer (E
VOH), ethylene-ethyl acrylate copolymer (EE
A) copolymers of ethylene and vinyl monomers;
Rear acrylonitrile (PAN); ionomer; aluminum
Metals such as aluminum foil (Al); linear low-density polyethylene
/ Polyamide / linear low density polyethylene, linear low density
Polyethylene / polyamide / ethylene-vinyl alcohol
Copolymer / polyamide / linear low-density polyethylene
By one or more of multi-layer (co-extrusion) films
Can be formed. The above-mentioned sealant layer is used for heat-sealing the packaging material.
This is a layer for sealing the walls, for example, low density polyethylene.
Len (LDPE), medium density polyethylene (MDPE),
High density polyethylene (HDPE), linear low density polyethylene
Polyethylene (PE) such as Tylene (LLDPE);
Elongated polypropylene (CPP), biaxially oriented polypropylene
Polypropylene (PP) such as (OPP);
Ten, α-olefin polymer, α-olefin copolymer
Polyolefins such as nylon; Polyamides such as nylon (NY)
E; ethylene-vinyl acetate copolymer (EVA), ethylene
-Vinyl alcohol copolymer (EVOH), ethylene
-With ethylene such as ethyl acrylate copolymer (EVA)
Copolymer with vinyl monomer; polyvinyl alcohol
Polyols such as (PVA); one kind such as ionomers or
It can be formed of two or more types. The form of the above-mentioned base material layer or sealant layer
Is, for example, a film or a multilayer film
You. If the substrate layer is a multilayer film,
It is only necessary that the entire system be impermeable to water.
It may have a transparent resin layer. Among these, the basic
As the material layer, linear low-density polyethylene (LLDP)
E) LLD having a nylon (NY) layer inserted between layers
PE / NY / LLDPE multi-layer (co-extrusion) film, Etch
Len-vinyl alcohol copolymer (EVOH) layer and
LLDPE / NY / EVOH /
NY / LLDPE multilayer (co-extrusion) films are preferred
And a low-density linear polyether as the sealant layer.
A film comprising a styrene (LLDPE) layer is preferable.
You. The above-mentioned molten resin layer includes a base material layer and a sealant.
Inserted between layers and melt-bonds these layer interfaces
It is a layer that has the effect of fixing between films by
For example, low density polyethylene (LDPE), linear low density
Polyethylene (P) such as polyethylene (LLDPE)
E); polypropylene (PP); poly-1-butene, α
-Polymers such as olefin polymers and α-olefin copolymers
Olefins; one of these rubbers and elastomers or
It can be formed of two or more types. In a preferred form of the packaging material according to the present invention,
In the case of fusion bonding with the molten resin layer,
The surface of the contacting sealant layer melts with the molten resin layer
Form and, in addition, the base material layer in contact with the molten resin layer
In which the surface of the resin melts together with the molten resin layer.
In these forms, the base material layer or sealer in contact with the molten resin layer
The surface of the paint layer should be the same type of resin as the molten resin layer
Is preferred. Homogeneous resins have the same main chemical composition.
And the density difference of the resin is 0.040 g / cm ³ Less than
Means lower, and preferably, the density difference of the resin is
0.030 g / cm ³ Or less, more preferably,
0.020 g / cm ³ It is as follows. As a result,
The layers between the fat layer and the sealant layer are more fully fixed,
In addition, between the base material layer, the molten resin layer and the sealant layer
Will be sufficiently fixed. Specific form in this case
As a state, the base material layer is a barrier film against water and oil.
LLDPE / NY / LLDPE multilayer film,
Or LLDPE / NY / EVOH / NY / LLDPE
A multilayer film, wherein the molten resin layer is LLDPE,
Examples include a form in which the sealant layer is LLDPE. The melting point of the resin forming the molten resin layer (also
Or pour point) forms the base layer and sealant layer
Is preferably lower than the melting point. this
Melts the base material layer and sealant layer sufficiently
Can be done. In this case, for example,
The relationship between the melting points of the layers is as follows: base material layer> sealant layer> melting
It is preferable that the base material layer be a resin layer,
(More preferably, 105 to 230 ° C)> sealant layer
Is 81 to 230 ° C (more preferably, 91 to 180 ° C)
> Molten resin layer is 80 to 190 ° C. (more preferably, 90 to 190 ° C.)
To 140 ° C.). In this case, Sheila
Layer> molten resin layer
Perspective to avoid deformation such as elongation of the sealant layer during
Of the sealant layer from the viewpoint of
The difference between the melting point and the melting point of the molten resin layer is 1 to 40 ° C.
And more preferably 3 to 30 ° C.
The temperature is preferably 5 to 25 ° C. As a method of manufacturing the above-mentioned packaging material, for example,
The film that forms the base layer and the film that forms the sealant layer
Pour molten resin between films and melt each film
A method of melting and bonding with a resin may be used. The above packaging material
May be appropriately set depending on the material and the like,
For example, the thickness is preferably 1 μm to 10 mm. 1μ
m, the heat storage material composition is circulated in the heat storage device, etc.
May exceed 10 mm
Then, there is a possibility that the heat transfer property and the filling rate may decrease. Than
Preferably, it is 10 μm to 500 μm. Next, the present invention formed by the above packaging material
The heat storage material will be described. The heat storage material of the present invention is a heat storage material.
The composition encapsulated in a packaging material, that is, a heat storage material set
The product is filled (enclosed) in the packaging material, and the sealed part of the packaging material
(Sealed part) to seal the heat storage material composition.
It is enclosed in a packaging material. How to seal the above packaging material
As a method, for example, the packing material was filled with a heat storage material composition
After, or by pressing with a heated mold while filling
More heat-sealing method can be used
However, it improves the filling efficiency,
In order to improve heat storage performance by eliminating
Method for heat sealing and sealing while filling a heat storage material composition
Is preferred. The packaging form in the above sealing method includes:
Examples include pillows, squares, and pyramid pouches.
I can do it. The pillow form means that the lower part of the cylindrical film is sealed
Sealed by a roller (a device that seals the film with heat)
After filling, fill the top and seal in the same direction.
The four-sided form is a laminated film
After sealing the three sides with a sealer and filling the filler
The upper part is sealed, and the pyramid pouch and
Seal the lower part of the tubular film with a sealer and fill
After filling, seal the top at 90 ° different direction
It is a form which becomes. The shape of the heat storage material in the present invention is particularly
Without limitation, for example, cylindrical type, envelope type, (Standin
G) Pouch type, tetra pack type, spherical type, prism type, gourd
Type, tube type, sausage type, coil type, bottle type,
Examples thereof include a shape in which they are formed in a continuous shape. these
Among them, cylindrical type, envelope type, (standing) pouch
Molds, Tetra Pak molds, and shapes in which these are formed in a continuous envelope
Is preferred. The components of the heat storage material composition according to the present invention are described below.
A specific embodiment will be described. Heat storage in the present invention
The material composition requires an oily substance that has heat storage due to phase change.
And heat of sensible heat storage, latent heat storage, chemical reaction storage, etc.
It can store and release energy. For phase change
More heat storage means latent heat during phase change or phase transition
Means having latent heat storage using heat as heat storage
However, such oily substances have a high heat storage density and a constant temperature.
It is capable of storing and radiating heat in the vicinity. This specification
Medium, heat storage material composition is used to fill the heat storage material
Shall mean any material that is to be made. Oily substance having heat storage property by the above phase change
Examples include alcohols, esters, ethers
And hydrocarbon compounds such as paraffins.
Typically, C ₁₄ ~ C ₁₆ Paraffin, C _Fifteen ~ C ₁₆ Paraffi
Pentadecane, C ₁₄ Paraffin, C ₁₆ Paraffin
Intermediate paraffin that is liquid at room temperature; solid at room temperature
Higher paraffin; higher alcohol such as 1-decanol
Is mentioned. These may be used alone or in combination of two or more.
May be used in combination. Among these, handling is convenient
Therefore, in the case of a heat storage material for building air conditioning, room temperature (25
C) and at normal pressure (about 101.3 kPa)
It is preferable to use a certain oily substance. Also, easily enter
Thermal storage that can be used and used over a wide temperature range
That the body can be produced easily and stably
Paraffin is preferred, and is used for cooling and
In the case of paraffin, tetradecane, pentadecane,
Hexadecane, heptadecane and mixtures thereof are preferred.
Good. The heat storage material of the present invention has a heat storage property by a phase change.
With the oily substance as an essential component, the flow of the oily substance
Packaging heat storage material composition containing oil thickener to reduce heat resistance
It is preferable that it is sealed in a material. For phase change
As a more liquefied oily substance, there is a heat storage material for building air conditioning.
Specifically, at a normal temperature (25 ° C.), a normal pressure (about 10
(1.3 kPa) is preferable. The heat storage material may be such that the heat storage material composition comprises the oily substance
Oils by including oil thickeners that reduce the flowability of the oil
To reduce heat transfer and heat dissipation
When freezing and thawing are repeated, exudation of oily substances
Spills are suppressed, and ignition to oily substances is suppressed, resulting in safety
Will be higher. In the production of the heat storage material, an essential component
Manufactures heat storage material compositions containing certain oily substances and oil thickeners
It may be filled in a packaging material and enclosed.
After filling the packaging material with the oil thickener and
The heat storage material composition may be manufactured and enclosed. As the oil thickener in the heat storage material composition
Has an effect of reducing the fluidity of the oily substance.
Is not particularly limited as long as it is, for example, the following (1) to
The compounds and substances described in (7) can be used.
You. These may be used alone or in combination of two or more.
Is also good. (1) Polyolefin polymer and polio
Halogen obtained by partially halogenating a olefin polymer
Compounds: polyethylene, polypropylene, polybutene, etc.
Polyolefin homopolymer; mainly ethylene
Tylene and α-olefin having 3 to 12 carbon atoms are copolymerized.
Polyolefin copolymer consisting mainly of propylene
And propylene and an α-olefin having 2 or 4 to 12 carbon atoms
Polyolefins such as polyolefins
Polymer; vinyl acetate, ethyl acrylate, methacrylic acid
A monomer such as ethyl and an α-olefin are copolymerized
Copolymers and the like. (2) In the field of rubber and plastic
So-called thermoplastic that has rubber elasticity at room temperature or higher.
Compound known as conductive elastomer: Polystyrene
And polybutadiene, polyisoprene or
Stille such as block copolymer with hydrogenated product of refine
Elastomers; polyolefin copolymers and polyoles
Mixture with fin copolymer; for polyolefin copolymer
Olef such as copolymers obtained by graft polymerization of olefins
Elastomers; Urethane elastomers; Esthetics
Elastomers. (3) Hydrocarbon rubber: natural rubber, styrene
-Butadiene copolymer rubber, butyl rubber, butadiene
Rubber, isoprene rubber, ethylene-propylene copolymer
Rubber, ethylene-propylene-diene terpolymer
Rubber, styrene-ethylene-butylene terpolymer rubber,
Ethylene-vinyl acetate copolymer rubber, ethylene-acryl
Ethyl luate copolymer rubber and the like. (4) N-acylamino acid amide: N-la
Uroylglutamic diamide, N-lauroylgluta
Dibutyl amide, di-N-lauroylglutamate
Stearyl amide, N-acetylglutamic acid distear
Lilamide, N-octylglutamic acid dioctylamine
, N, N-dicapryloyl lysine amide, N, N-di
Capryloyl lysine lauramide, N, N-dilauro
Irridin octylamide, N-lauroyl valine lau
Rilamide, N-lauroylphenylalanine lauryl
Amides and the like. (5) N-acylamino acid amine salt: N,
N-dilauroyl lysine octylamine salt, N, N-di
Lauroyl lysine stearylamine salt, N, N-dicap
Liloyl lysine lauryl amine salt, N-stearoyl
Stearylamine glutamic acid salt and the like. (6) N-acylamino acid derivative: N, N
-Dicapryloyl lysine lauryl ester, N, N-di
Lauroyl lysine lauryl ester, N, N-dilauro
Illysine stearyl ester, N-stearoyl glu
N-acyl amino acids such as steramic acid stearyl ester
Steal, etc. (7) Others: benzylidene sorbitol, 12-hide
Loxastearic acid and the like. The above-mentioned polyolefin polymer and its halo
Genides can be non-crystalline, low-crystalline, or crystalline.
You may. However, non-crystalline or low-crystalline polyolefin
Polymers are classified as hydrocarbon rubbers according to their physical properties.
It may be done. As a thermoplastic elastomer,
Above temperature, compounds with rubber elasticity are preferred
is there. More preferably, at room temperature or higher, and oily
Range up to 20 ° C higher than the melting point (crystal transition temperature)
A compound having rubber elasticity
Preferably, up to a temperature 10 ° C. higher than the melting point of the oily substance
Is a compound having rubber elasticity within the range of
You. The amount of the oil thickener used is, for example,
0.1 to 50 parts by weight based on 100 parts by weight of the oily substance
Preferably. If it is less than 0.1 parts by weight, oily substances
The flowability of oily substances without impairing the thermal storage
The effect of lowering may be insufficient, and the heat storage material composition
The liquid oily substance may separate from the material and seep out.
You. If it exceeds 50 parts by weight, the heat storage material composition may be solid or
Complex composition as it becomes a highly viscous composition
Can be filled with heat storage material composition without gaps
It may disappear. In addition, a polymer or a cross-linked
Reaction to form polymer and introduction of cross-linked structure into polymer
Excellent shape retention because reaction is inhibited by oil thickener
Heat storage material composition may not be able to be manufactured
is there. More preferably, it is 0.2 to 20 parts by weight,
Preferably, it is 0.4 to 4 parts by weight. [0036] The heat storage material of the present invention can also store heat by phase change.
Storage by polymerizing monomer components in oily substances
It is preferable that the heating material composition is enclosed in a packaging material.
Good. The heat storage material has heat storage properties due to a phase change.
Polymerization of monomer components in oily substances to form polymers
By holding the oily substance in the polymer
It will have a heat storage material composition. As a result,
Of oily substances in a polymer obtained by polymerizing monomer components
Oily substance can be retained so that the property decreases
Therefore, in order to store and dissipate heat as described above,
Leakage such as seepage of oily substance when repeated melting
Suppressed, ignition of oily substances is suppressed and safety is high
It will be. Polymer obtained by polymerizing the above monomer components
Is a state that retains oil-based substances that have heat storage due to phase change.
In order to maintain the state more stably,
Is preferred. To impart such a crosslinked structure to the polymer
As a method, for example, a polymerizable unsaturated group is
Monomer containing at least two crosslinkable monomers in it
A method in which a body component is polymerized to form a polymer is preferable.
That is, the heat storage material composition of the present invention comprises the monomer component
It is preferable to include a crosslinkable monomer as the component.
By polymerizing monomer components containing such crosslinkable monomers
As a result, a polymer having a crosslinked structure is produced. The method for imparting the crosslinked structure to a polymer is as follows.
And a reactive monomer having a condensable functional group.
The method of polymerizing monomer components to form a polymer is also applicable.
Can be. In this case, the above monomer component is contained in an oily substance.
A polymer obtained by polymerization, in a state containing an oily substance,
With a crosslinking agent having at least two condensable functional groups,
Condensable functional group of polymer and condensable agent of crosslinking agent
Crosslinking by condensation with functional groups
The resulting polymer is obtained. This way
May be used in combination with the above method using a crosslinkable monomer.
In these polymerization reactions and cross-linking reactions, catalysts that promote the reaction
To increase the reaction rate by appropriately selecting
Can also. An oily substance having a heat storage property by a phase change will be described below.
Method of polymerizing monomer components in a substance to form a polymer
Will be described. As the above monomer component,
A monomer (a) having one polymerizable unsaturated group as a main component
It is not particularly limited as long as it is included. Ma
In addition, as described above, a polymerizable unsaturated group is contained in the molecule.
Crosslinkable monomer (b) having at least two or more condensable
It is preferable to include a reactive monomer (c) having a functional group.
No. Examples of the monomer (a) include a heat storage material composition
Gels or solids, making it easier to hold oily substances.
Therefore, the solubility parameter (SP value) is 1
It is preferred to use 8.4 or less monomers. In addition, dissolution
The degree parameter (SP value) is a scale indicating the polarity of a compound.
It is a value generally used as the degree, and in this specification
Is expressed by Hoy's aggregation energy constant in Small's formula.
Is applied, and the unit is (J /
cm ^Three ) ^1/2 It is a value represented by. The solubility parameter (SP value) is 1
As the monomer (a) of 8.4 or less, for example,
And the like listed. These may be used alone
Alternatively, two or more kinds may be used in combination. (1) Unsaturated carboxylic acid ester: methyl (meth) ac
Acrylate, ethyl (meth) acrylate, propyl (meth)
TA) acrylate, butyl (meth) acrylate, is
o-butyl (meth) acrylate, t-butyl (meth)
Acrylate, 2-ethylhexyl (meth) acrylate
, N-octyl (meth) acrylate, dodecyl (meth)
TA) acrylate, stearyl (meth) acrylate,
Phenyl (meth) acrylate, octylphenyl (meth
TA) acrylate, nonylphenyl (meth) acrylate
G, dinonylphenyl (meth) acrylate, cyclohexane
Xyl (meth) acrylate, menthyl (meth) acryl
, Isobornyl (meth) acrylate, dibutyl
(Meth) acrylate, dibutyl maleate, didodec
Lumareate, dodecyl rotonate, didodecylita
Conate and the like. (2) (meth) acryl having a hydrocarbon group
Luamide: (di) butyl (meth) acrylamide,
(Di) dodecyl (meth) acrylamide, (di) steer
Lil (meth) acrylamide, (di) butylphenyl
(Meth) acrylamide, (di) octylphenyl (meth
TA) acrylamide and the like. (3) α-olefin: 1-hexene, 1
-Octene, isooctene, 1-nonene, 1-decene
etc. (4) Alicyclic vinyl compounds: vinylcyclohexane and the like. (5) Allyl ether having an aliphatic hydrocarbon group: dode
Silallyl ether and the like. (6) Vinyl ester having an aliphatic hydrocarbon group: cap
Vinyl lonate, vinyl laurate, vinyl palmitate
And vinyl stearate. (7) Vinyl ether having an aliphatic hydrocarbon group: butyric
Vinyl ether, dodecyl vinyl ether and the like. (8) Aromatic vinyl compound: styrene, t-butylstyrene
Len, octyl styrene and the like. Among the above monomer components, alkyl (meth)
TA) acrylate, alkylaryl (meth) acryle
, Alkyl (meth) acrylamide, alkyl ant
(Meth) acrylamide, fatty acid vinyl ester,
Selected from the group consisting of alkylstyrenes and α-olefins
At least one unsaturated compound selected as the main component
Preferably, it is used. Such unsaturated compounds are low
At least one aliphatic hydrocarbon group having 1 to 30 carbon atoms
Is preferred. The solubility parameter in the monomer component
Use of monomer (a) with a meter (SP value) of 18.4 or less
The dosage is not particularly limited as long as it is the main component.
For example, the content is preferably 50% by mass or more. 50% by mass
If it is less than the content of the oily substance retained in the polymer
May decrease. More preferably, 70% by mass
That is all. The above monomer component has a solubility parameter
(SP value) containing a monomer (a) exceeding 18.4
May be. As such a monomer (a), for example,
For example, methoxy polyethylene glycol (meth) acryle
Phenoxy polyethylene glycol (meth) ac
Relate and the like. These may be used alone
Alternatively, two or more kinds may be used in combination. Examples of the crosslinkable monomer (b) include
For example, ethylene glycol di (meth) acrylate, die
Tylene glycol di (meth) acrylate, polyethylene
Glycol di (meth) acrylate, polyethylene glycol
Recall-polypropylene glycol di (meth) acryl
Rate, propylene glycol di (meth) aclayer
G, polypropylene glycol di (meth) aclay
G, 1,3-butylene glycol di (meth) aclay
G, neopentyl glycol di (meth) acrylate,
1,6-hexanediol di (meth) acrylate,
N, N'-methylenebisacrylamide, N, N'-propyl
Lopylene bisacrylamide, glycerin tri (meth)
Acrylate, trimethylolpropane tri (meth) a
Acrylate, tetramethylolmethanetetra (meth) a
Acrylate; glycerin, trimethylolpropane, te
Alkylene of polyhydric alcohols such as tramethylolmethane
For esterification of oxide adduct with (meth) acrylic acid
The resulting polyfunctional (meth) acrylate or divinyl
Benzene and the like can be mentioned. These may be used alone
Alternatively, two or more kinds may be used in combination. The above monomer (a) and the above crosslinkable monomer
As the compounding ratio with (b), for example, the monomer (a) and
Assuming that the total mass of the crosslinkable monomer (b) is 100% by mass,
90 to 99.999% by mass of monomer (a), crosslinkable monomer
It is preferred that the amount of the body (b) is 0.001 to 10% by mass.
No. As the reactive monomer (c), carbohydrate
Xyl group, hydroxyl group, mercapto group, nitrile
Group, amino group, amide group, isocyanate group and epoxy
At least one functional group selected from the group consisting of
Vinyl-based monomer or acid having a polymerizable unsaturated group
Anhydrides and the like. These may be used alone,
Two or more kinds may be used in combination. Specific examples of these include:
For example, the following are mentioned. (1) Vinyl monomers having a carboxyl group
Dimer: (meth) acrylic acid, fumaric acid, itaconic acid and the like. (2) Vinyl monomer having hydroxyl group: hydro
Xyethyl (meth) acrylate, polyethylene glyco
Mono (meth) acrylate, propylene glycol
Mono (meth) acrylate, polypropylene glycol
Mono (meth) acrylate, glycerin (meth) acryl
Rate, trimethylolpropane (meth) acrelay
And hydroxystyrene. (3) Vinyl monomer having a mercapto group
Body: vinyl mercaptan, mercaptoethyl (meth) a
Acrylate and the like. (4) Vinyl monomer having a nitrile group: (meth) a
Acrylonitrile and the like. (5) Vinyl monomer having amino group: aminoethyl
(Meth) acrylate, vinylpyridine and the like. (6) Vinyl monomer having an amide group:
(Meth) acrylamide and the like. (7) Vinyl monomer having isocyanate group: vinyl
Luisocyanate and the like. (8) Vinyl monomer having epoxy group: glycidyl
(Meth) acrylate and the like. (9) Acid anhydride having a polymerizable unsaturated group: maleic anhydride
Acids and the like. The above monomer (a) and the above reactive monomer
The compounding ratio with (c) is, for example,
The total mass of the monomer (a) and the reactive monomer (c) is 100
The monomer (a) is 90 to 99.995 mass in terms of% by mass.
%, And the reactive monomer (c) is 0.005 to 10% by mass.
Preferably. The above monomer component contains the reactive monomer (c).
In this case, a crosslinking agent having two condensable functional groups
Crosslinking the condensable functional group with the condensable functional group
Thus, a crosslinked structure is formed. As the above crosslinking agent
For example, the condensable functional group of the reactive monomer (c)
Examples of (X) include those described below. this
May be used alone or in combination of two or more. (1) When the condensable functional group (X) is a carboxyl group,
When it is a hept group, a nitrile group or an epoxy group,
Files such as tyrolphenol and polymethylolphenol
Enol resins and the like. (2) When the condensable functional group (X) is a carboxyl group,
In the case of a xyl group, melamine, benzoguanami
Amino compounds such as urea and urea with formaldehyde and alcohol
And an amino resin obtained by addition condensation with a polymer. (3) When the condensable functional group (X) is carboxy
, Isocyanate group, epoxy group,
Hexamethylenediamine, diethylenetriamine, tet
Polyvalent amino compounds such as laethylenepentamine;
You. (4) When the condensable functional group (X) is a carboxyl group,
Xyl group, mercapto group, isocyanate group, amide
Group, amino group or epoxy group,
Range isocyanate, isophorone diisocyanate,
p-phenylene diisocyanate, 2,4-toluenedi
Isocyanate, 2,6-toluene diisocyanate,
1,5-naphthalene diisocyanate; these isocyanates
A tube formed by condensation of anatate with methanol, phenol, etc.
Isocyanate compounds such as locked isocyanate
No. (5) When the condensable functional group (X) is an isocyanate
Malonic acid, succinic
Polyvalent acids such as acid, adipic acid, phthalic acid and terephthalic acid
Boric acid and the like. (6) When the condensable functional group (X) is a hydroxyl group, an isocyanate
When it is an anato group or an epoxy group, phthalic anhydride
Acid, pyromellitic anhydride, benzophenonetetracal
Acid anhydrides such as boric anhydride are exemplified. (7) When the condensable functional group (X) is hydroxy
, Mercapto, amino, or amide group
Are aldehydes such as glyoxal and terephthalaldehyde
And the like. (8) The condensable functional group (X) is a hydroxyl group, an isocyanate
In the case of an anato group or an epoxy group, ethylene glycol
Coal, diethylene glycol, propylene glycol
And polyhydric alcohols such as hexanediol.
You. (9) When the condensable functional group (X) is carboxy
Group, hydroxyl group, mercapto group, isocyanate
Group, toluene glycidyl ether, hexyl
Samethylene glycidyl ether, bisphenol A jig
Risidyl ether, polypropylene glycol diglyci
Epoxy compounds such as zyl ether are exemplified. The reactive monomer (c) and the crosslinking agent
And a condensable functional group (X) of the reactive monomer (c),
The combination of the crosslinking agent with the condensable functional group (Y) may be any one of
One of the functional groups is a carboxyl group, a hydroxyl group,
Selected from the group consisting of capto, amino and amide groups
At least one functional group, and the other functional group
Isocyanate group, epoxy group, carboxylic anhydride group
At least one functional group selected from the group consisting of
Preferably. More preferably, the oily substance at a low temperature
Since it can be gelled, the condensable functional group (X)
Is a hydroxyl group and the condensable functional group (Y) is
It is an anato group. The reaction between the reactive monomer (c) and the crosslinking agent
The ratio is, for example, 1 mol of the condensable functional group (X) to 1 mol.
And the number of moles of the condensable functional group (Y) is from 0.1 to 10 moles.
It is preferable to set so that Less than 0.1
May cause insufficient strength of the heat storage material composition.
If it exceeds 10, the retention of oily substances will be insufficient.
May be present. The above monomer component contains the reactive monomer (c).
In the case of oil, a monomer component is polymerized together with an oily substance
After mixing the polymer and the crosslinking agent to form a mixture, the oily substance
Temperature of 0-80 ° C so that the substance can be melted and maintained in a liquid state
The cross-linking reaction may be carried out at a lower temperature. In addition, condensation after the crosslinking reaction
Functional group (X) and condensable functional group (Y) remain unreacted
Range that does not hinder the crosslinking reaction
Within, a condensable functional group (X) and / or a condensable functional group
A compound having a reactive group capable of polycondensation with (Y)
It may be added after the crosslinking reaction. For example, a condensable functional group
(X) or the condensable functional group (Y) is a polyvalent isocyanate
In some cases, a long-chain carboxylic acid or the like is used as the compound.
Can be. With the above-mentioned oily substance having heat storage properties,
As a method for polymerizing a body component to form a polymer,
Polymerization usually in the presence of an oil-soluble radical polymerization initiator
Protective colloids in aqueous media such as water
Oily substances in aqueous surfactant solution
And monomer components were mutually compatible, mixed and suspended
In the presence of an oil-soluble radical polymerization initiator
Suspension polymerization in water (suspension polymerization in water)
it can. At this time, the fluidity of the oily substance mentioned above is reduced.
The polymerization may be carried out in the presence of an oil thickener to be effected. As the above oil-soluble radical polymerization initiator
Is, for example, benzoyl peroxide, lauroylpa
Organics such as peroxides and cumene hydroperoxide
Peroxide; 2,2'-azobisisobutyronitrile,
Azotization of 2,2'-azobisdimethylvaleronitrile and the like
And the like. These may be used alone,
More than one species may be used in combination. The amount of the above oil-soluble radical polymerization initiator used
For example, for 100% by mass of the monomer component,
The content is preferably 0.1 to 5% by mass. In the above polymerization
As the polymerization temperature, the melting point of the oily substance and the monomer component
Considering the type of and the type of polymerization initiator,
It is preferred that the temperature be such that the oily substance can maintain a liquid state.
No. More preferably, it is 0 to 80 ° C. As the above protective colloid agent, for example,
Rivinyl alcohol, hydroxyethyl cellulose, ze
Examples of the surfactant include, for example, ratine.
For example, sodium alkyl sulfonate, alkyl benzene
Sodium sulfonate, polyoxyethylene alkyl ester
And fatty acid soaps. These are
They may be used alone or in combination of two or more. The heat storage material composition further includes the following
An additive having a function of performing the above-described operation may be contained. This
These may be used alone or in combination of two or more.
No. (1) For improving heat transfer: metal powder such as iron and copper: metal fiber; metal
Oxide; carbon; carbon fiber and the like. (2) Specific gravity adjustment: sand; clay; stone; metal powder such as lead and iron
etc. (3) For imparting flame retardancy: water; water gel; metal
Powder; inorganic compounds such as calcium carbonate; bromine-based, chlorine-based,
Phosphorus-based flame retardants, etc. In addition, flame retardancy includes reduced flammability,
Prevents spread of fire, extinction of flash point by steam, reduction of combustion heat
Including fruits. (4) For supercooling prevention: metal powder, polymer paraffin (wa
Box) etc. (5) For solidification point adjustment: waxes and the like. (6) For prevention of oxidation and deterioration over time: phenolic,
Thio-based, phosphorus-based antioxidants and the like. (7) Others: coloring agents, pigments, antistatic agents, antibacterial agents and the like. The amount of the additive used is, for example,
When using calcium carbonate to reduce burnability
Is 10 to 4 with respect to the total amount of the oily substance and the polymer.
It is preferably 0% by mass. The above-mentioned oily substance is used to adjust latent heat.
May be added. As the above inclusion compound
Is, for example, C _Four H ₈ ・ O ・ 17H _Two O, (CH _Three ) _Three N
10.25H _Two O, (C _Four H ₉ ) _Four NCHO _Two ・ 32H _Two O,
(C _Four H ₉ ) _Four NCH _Three CO _Two ・ 32H _Two O and the like.
These may be used alone or in combination of two or more.
No. A single amount together with the above-mentioned oily substance having heat storage properties
When a heat storage material is formed by polymerizing body components to form a polymer
Then, when the above additives are used, for example, metal powder
As described above, a large specific gravity difference of 1 or more
Dissolution of additives and oily substances when using
Because the difference between the numerical values of the degree parameter is more than 4
Even when the compatibility between the additive and the oily substance is poor,
It can be maintained in a uniform state in the heat storage material composition,
The effect of the additive can be exhibited more effectively. In the production of the heat storage material, further,
Oil thickener for reducing the fluidity of an oily substance in a heating material composition
And / or a crosslinking agent is preferably added, and an oil thickener
It is more preferable to add a crosslinking agent. in this case,
As a method for forming the heat storage material composition, (1) oily substance
After polymerizing monomer components in the polymer to form a polymer, oil thickening
A crosslinking agent is added to the polymer to form a crosslinked structure.
(2) Monomers in oily substances and oil thickeners
The components are polymerized to form a polymer and, if necessary, a crosslinking agent.
Method of adding a cross-linked structure to the polymer by adding
Can be In the production of the heat storage material, the packaging material is filled.
The state of the heat storage material composition is not particularly limited,
For example, liquid, gel, solid, and the like.
It may be a mixture. Also, a solid heat storage material composition
Is liquefied by heating or the like, or a liquid heat storage material composition
May be used in a gelled or solid state. these
Above all, heat storage materials in packaging materials of complex shapes, easily and without gaps
Liquid forms are preferred because they can be filled with the composition.
The heat storage material composition is tightly packed in the packaging material,
An excellent heat storage material can be manufactured. Most preferred
Fills the packaging material in liquid form, and gels and hardens in the packaging material.
In this embodiment, the heat storage material is formed. As the production of the heat storage material of the present invention, for example,
The monomer component is polymerized with the oily substance having heat storage
In the case of forming a polymer to form a heat storage material composition,
When enclosing the heat storage material composition in a packaging material, use plastic.
The above-mentioned three-dimensional shape formed by the backing film
Oily substances can be added to bag-like materials or the three-dimensional packaging
Together with the monomer component or the polymer before crosslinking in a liquid state.
And cured (gelled) in the packaging material or bag.
Can be made. Thereby, the inside of the packaging material or the bag shape
It becomes easy to densely fill the heat storage material composition in the material.
To obtain a heat storage material having improved heat storage efficiency due to the oily substance.
You can do it. As the above-mentioned production method, for example, (1)
Contains oily substance, monomer (a) and crosslinkable monomer (b)
In the packaging material or the bag-like material in a liquid state with the monomer component
Filled into and filled with oil-soluble radical polymerization initiator
Method of curing by bulk cross-linking polymerization below (cast polymerization method
Method), (2) Oily substance and monomer (a) and reactive monomer
Initiation of oil-soluble radical polymerization of a monomer component containing (c)
Mix the polymer before crosslinking, which was polymerized in the presence of
The combined mixture is placed in a liquid state before the crosslinking reaction is complete.
Fill and fill the packaging material or the bag-like material,
A method of curing by completing the crosslinking reaction (crosslinking method after casting)
Method), (3) oily substance and monomer (a) and crosslinkable monomer
(B) in a liquid state with a stainless steel bath
Into the packaging material, such as oil-soluble radical polymerization
The heat storage material that has been cured by bulk crosslinking polymerization in the presence of the initiator
Extruder such as meat chopper, and the plastic packaging
Method (filling method after formation of heat storage material)
Can be The amount of the heat storage material composition enclosed in the packaging material
Is not particularly limited. For example, the total capacity of the packaging material is 100
%, The content is preferably set to 20 to 100%. 2
If it is less than 0%, the heat storage efficiency may not be sufficient.
is there. More preferably, the expansion and contraction of the heat storage material composition is considered.
If considered, it is 95% or less. More preferably, 40 to
90%. The heat storage material of the present invention can be used for office buildings, factories, etc.
-Saving energy for cooling and heating for large buildings and homes
A heat storage device for the purpose of efficiency and environmental protection
It is an excellent material and can be used to seal packaging materials and withstand high temperatures.
It is water-based and highly safe. The present invention will be described in more detail with reference to the following examples.
As will be apparent, the invention is not limited to only these examples.
Not. Example 1 Thermometer, stirrer, gas inlet tube, two dropping funnels and return
In a 500 ml flask equipped with a flow cooler,
10 g of pentadecane as an active substance was charged, and under stirring,
Replace the inside of the flask with nitrogen and heat to 65 ° C under a nitrogen stream
did. Then, in one dropping funnel, as a monomer component
2-ethylhexyl acrylate (SP value: 15.
9) 39.7 g and hydroxyethyl acrylate 0.
3g, and paraffin distilled from kerosene as an oily substance
Quinone (tetradecane 19.4% by mass, pentadecane 7
3.5% by mass, 6.9% by mass of hexadecane, heptadeca
20 g of a solution consisting of 20 g
2,2'-azobis as a polymerization initiator is added to the lower funnel.
(4-methoxy-2,4-dimethylvaleronitrile)
0.1 g, and oily substances and kerosene as diluent
Distilled paraffin (19.4% by mass of tetradecane,
73.5% by mass of untadecane, 6.9% by mass of hexadecane
%, Heptadecane 0.2% by mass)
Were charged. Subsequently, the solution and the
And the solution were simultaneously added dropwise over 1 hour to carry out the polymerization reaction.
Then, the temperature inside the flask is further raised to 80 ° C.,
The polymerization was completed while maintaining for a while to obtain a polymer before crosslinking. Toluene diisocyanate as crosslinking agent
0.5 g, dibutyltin dilaurate 0.1 g, and
Paraffin distilled from oily substances and kerosene as diluent
(Tetradecane 19.4% by mass, pentadecane 73.
5 mass%, hexadecane 6.9 mass%, heptadecane
A solution consisting of 120 g (0.2% by mass) was prepared. The base material layer is LLDPE / NY / EVOH / N
Y / LLDPE multilayer film (25 μm thickness), (Fused
The melting point of LLDPE of the base material layer in contact with the resin layer is 126 ° C.
Density 0.928g / cm ³ ), The molten resin layer is LLDPE
(Thickness 25 μm, melting point 95 ° C, density 0.910 g / cm
³ ), The sealant layer is LLDPE film (thickness 80μ)
m, melting point 120 ° C, density 0.920 g / cm ³ )
Laminate film (length 16cm x width 7cm, sealing glue allowance)
0.5cm) with a heat sealer (Fuji Impulse,
T-230, scale 4) heat sealed three sides
The material was obtained. From the open seal of this packaging material, the above method
The mixed solution obtained by mixing the polymer and the solution before cross-linking obtained in
Fill 5g, heat seal the opened opening and store
Heat material (1) was obtained. Comparative Example 1 The base material layer was made of HDPE / NY / EVOH / NY / HDPE
Layer film (thickness 25μm), sealant layer is LLDP
E film (thickness: 80 μm)
Except for using packaging materials bonded with a tan-based adhesive,
Comparative heat storage material (1) was obtained in the same manner as in Example 1. The heat storage material obtained in Example 1 and Comparative Example 1
(1) and comparative heat storage material (1) are immersed in a 60 ° C. constant temperature water bath,
After leaving it for 4 months, take it out and use the heat storage material (1)
No peeling between the film layers of the packaging material was observed,
In the comparative heat storage material (1), peeling between film layers was observed. Example 2 The base material layer is an LLDPE / NY / LLDPE multilayer film
(Thickness 25 μm) (LL of base material layer in contact with molten resin layer)
DPE melting point 126 ° C, density 0.928g / cm ³ ),
The molten resin layer is LLDPE (thickness 25 μm, melting point 95 ° C.
Density 0.910g / cm ³ ), The sealant layer is LLDP
E film (thickness 50μm, melting point 120 ° C, density 0.9
20g / cm ³ ) Is a laminated film (length 16c)
mx 7cm wide, sealing glue 0.5cm) heat sealer
(Fuji Impulse, T-230, scale 4)
A heat-sealed packaging material was obtained. Open this packaging
75 g of pentadecane as an oily substance
Filled and opened sealing part is heat sealed and heat storage material
(2) was obtained. Comparative Example 2 The base material layer was PET film (thickness 25 μm), sealant
The layer is an LLDPE film (80 μm thick)
Using a packaging material that combines them with a polyurethane adhesive.
Except for this, a comparative heat storage material (2) was obtained in the same manner as in Example 2.
Was. The heat storage material obtained in Example 2 and Comparative Example 2
(2) and comparative heat storage material (2) are immersed in a 60 ° C constant temperature water bath,
After leaving it for 4 months, take it out and use the heat storage material (2)
No peeling between the film layers of the packaging material was observed,
In the comparative heat storage material (2), peeling between the film layers was observed. Example 3 The base material layer is an LLDPE / NY / LLDPE multilayer film
(LLD of the base material layer in contact with the molten resin layer with a thickness of 25 μm)
PE melting point 126 ° C, density 0.928 g / cm ³ ), Dissolved
The molten resin layer is LLDPE (thickness 25μm, melting point 95 ° C, dense
Degree 0.910g / cm ³ ), The sealant layer is LLDPE
Film (thickness 50μm, melting point 106 ° C, density 0.91
5g / cm ³ ) Laminated film (16 cm long)
× 7cm wide, 0.5cm sealing glue) heat sealer
(Fuji Impulse, T-230, scale 4)
A heat-sealed packaging material was obtained. Then styrene
-Based thermoplastic elastomer (trade name, manufactured by Shell Japan Co., Ltd.)
Clayton G1650) 15g in a 300ml beaker
And add 60 g of pentadecane as an oily substance and mix.
Then, the mixture was heated to 50 ° C. and melted to obtain a mixed solution. The
Before solidifying the mixed solution, open the packaging material
Filled and opened sealing part is heat sealed and heat storage material
(3) was obtained. Comparative Example 3 The base material layer was a PET film (thickness: 25 μm), Sealand
The layer is an LLDPE film (80 μm thick)
Using a packaging material that combines them with a polyurethane adhesive.
Except for this, a comparative heat storage material (3) was obtained in the same manner as in Example 3.
Was. The heat storage material obtained in Example 3 and Comparative Example 3
(3) and the comparative heat storage material (3) are immersed in a 60 ° C. constant temperature water bath,
After leaving for 4 months, take it out, and use heat storage material (3)
No peeling between the film layers of the packaging material was observed,
In the comparative heat storage material (3), peeling between film layers was observed. The heat storage material of the present invention has the above-described structure.
For large buildings such as office buildings and factories, for home use, etc.
Of energy-saving cooling and heating energy, efficiency, and environmental protection
It is an excellent material for the heat storage device for
High safety with high sealing performance and high temperature water resistance
Things.

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Tokihiro Yokoi             Hyogo prefecture Himeji city Aboshi ward             1 Nippon Shokubai Co., Ltd. (72) Inventor Seika Nakamura             Stock, 2-6-1 Nishi Shinjuku, Shinjuku-ku, Tokyo             Company Daiki company (72) Inventor Masanobu Hinohara             Stock, 2-6-1 Nishi Shinjuku, Shinjuku-ku, Tokyo             Company Daiki company

Claims (1)

Claims 1. A heat storage material in which a heat storage material composition containing an oily substance having a heat storage property by a phase change as an essential component is enclosed in a packaging material, wherein the packaging material is a base material. A heat storage material comprising a layer, a molten resin layer, and a sealant layer in this order from the outside.