JP2001009943A - Heat insulation material and wall surface structure using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation material having heat insulation and a strength equivalent to those of a prior art, that does not generate a toxic gas when burned and can be incinerated or disposed of into the underground after using. SOLUTION: The heat insulation material 10 is formed by alternately laminating four foamed board materials 11 and four corrugated fiberboard materials 12. The material 11 is obtained by mixing a synthetic resin with bean curd lees. The materials 11 and the materials 12 as well as the materials 12 to each other are adhered with a starch size. The material 10 can be widely utilized as a wall surface structural material of a concrete structure, a wall surface structural material of an insulated van, a material for another cold insulation equipment, a material for building, a material for a warehousing, a material for packaging, a member for a structure or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a material for refrigeration equipment,
The present invention relates to a heat insulating material used as a building material, a storage material, a packing material or a structural member, and a wall structure using the same.

[0002]

2. Description of the Related Art As shown in FIG. 6, a synthetic resin board material 61 such as a styrene material or a urethane material is adhered to a concrete wall body 60 as shown in FIG.
In general, a gypsum board 63 is bonded to the surface of the synthetic resin board material 61 using a mortar 62 or the like. Since these synthetic resin board members 61 function as heat insulating materials, the cooling and heating efficiency can be improved, and the dew condensation on the indoor wall surface can be prevented during the heating period.

As shown in FIG. 7, the wall surface of a conventional insulated car generally has a structure in which urethane foam 71 is injected and filled between a plurality of metal wall members 70 arranged at regular intervals. However, there is also a structure in which a urethane foam board material or a styrofoam board material is sandwiched between metal wall materials. Since the urethane foam 71 or the like functions as a heat insulating material, the cooling effect is improved.

[0004]

[0005] Conventionally, a synthetic resin board material or a urethane foam board used as a heat insulating material on the wall surface of a concrete building or a cold storage car has been used.
Since both are petroleum-based materials, they may generate toxic gases during a fire. In addition, after dismantling a building or an insulated car, if used board materials and the like are easily incinerated or discarded in the ground, there is a risk of causing environmental pollution such as air pollution and soil pollution.

Further, since the urethane foam 71 forming the wall surface of the insulated car is firmly attached to the metal wall material 70,
At the time of dismantling, the two cannot be easily separated, which is a major obstacle in reusing metal parts.

The problem to be solved by the present invention is that it has the same heat insulation and strength as the conventional one, does not generate toxic gas during combustion,
After use, to obtain a heat insulating material that can be incinerated or disposed of in the ground, and to obtain a wall structure that has the same heat insulation properties and strength as conventional and that can be easily processed after disassembly. .

[0007]

Means for Solving the Problems In order to solve the above-mentioned problems, a heat insulating material of the present invention comprises a foamed board material containing a plant powder, a plant fiber and a synthetic resin, and one or more corrugated cardboard materials. It is characterized by being formed by alternately laminating.

[0008] With this configuration, a foamed board material having the same heat insulation function as a synthetic resin board material or urethane foam, and a relatively high-strength corrugated cardboard material are alternately laminated. A heat insulating material having the same heat insulating properties and strength as the conventional one can be obtained. In addition, plant powder, foamed board material containing plant fiber and synthetic resin, and corrugated cardboard material have biodegradability and do not generate toxic gas when burned. Alternatively, it can be disposed of underground.

[0009] For bonding the foamed board material and the corrugated cardboard material, an adhesive such as starch paste, aqueous emulsion or hot melt can be used. Also, heating, cooling,
If you use an adhesive that has the property of lowering its adhesive strength by humidification or immersion in a specific solvent, you can apply a treatment according to the adhesive to the used heat insulating material to make the foam board material and the cardboard material Therefore, the paper resources can be reused and the amount of waste can be reduced.

[0010] By laminating the foamed board material to be alternately laminated with the corrugated cardboard material so as to be positioned on the front and back surfaces of the heat insulating material after lamination, the front and back surfaces are covered with the foamed board material. The most excellent heat insulation per thickness can be obtained.

[0011] In addition, since the foamed board material is attached to the end face of the corrugated cardboard material, the exposed surface of the heat insulating material is entirely covered with the foamed board material, and the structure is such that air is sealed in the corrugated cardboard material. Insulation can be further improved,
It is possible to prevent the cardboard material from absorbing moisture, reducing strength due to water absorption, and deteriorating heat insulation.

A single-sided cardboard material is used as the cardboard material,
In addition, by laminating so that the convex portion of the single-sided corrugated cardboard material is in contact with the foamed board material, the contact area between the foamed board material and the corrugated cardboard material is reduced, and heat conduction is reduced.
Heat insulation is improved.

As the plant powder or plant fiber, at least one of okara, bran, cereal flour, cereal grains, and pulp can be used. By using these, it is possible to obtain a heat insulating material that does not adversely affect the human body or the natural world during incineration and disposal after use as well as during use. In addition, it is possible to reuse okara, bran, and the like that are rarely used for food and mostly discarded.

Further, the wall structure of the present invention is characterized in that the heat insulating material is interposed between a plurality of layers of wall material constituting the wall surface. With such a configuration, it is possible to obtain a wall structure that has the same heat insulation properties and strength as the related art, and that can easily treat waste materials after disassembly. Such a wall surface structure can be widely used as a wall surface of various buildings such as a concrete building, a wall surface of an insulated car, and other heat insulating wall surfaces.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the heat insulating material of the first embodiment, and FIG. 2 is an exploded perspective view showing the heat insulating material.

The heat insulating material 10 of this embodiment is formed by alternately laminating four foam board materials 11 and four corrugated cardboard materials 12. The foam board material 11 and the corrugated cardboard material 12, and the corrugated cardboard materials 12 are adhered by starch paste.

The foam board material 11 is obtained by mixing a synthetic resin mainly composed of a thermoplastic resin with okara and melting the mixture under a pressurized condition in which evaporation of water contained in the okara is substantially suppressed. It is formed by kneading to completely disperse the okara grains in the synthetic resin and then releasing the pressurized condition to generate closed cells around each okara grain.

A foam board material 1 obtained by applying a starch paste to a corrugated cardboard material 12 produced by a single-stage papermaking machine.
The heat insulating material 10 is formed by bonding 1.

The foam board 11 has a heat insulating function equivalent to that of a conventional synthetic resin board or urethane foam, and has a structure in which the foam board 11 and the corrugated cardboard 12 are alternately laminated. Exhibits the same heat insulation and strength as conventional heat insulating materials. In addition, the foam board material 11 and the corrugated cardboard material 12 containing okara and synthetic resin have biodegradability and do not generate toxic gas when burned. Therefore, after use, they are incinerated or disposed of underground. It is possible.

Since the foamed board material 11 is laminated so as to be located on the front and back surfaces of the heat insulating material 10 and the front and back surfaces are covered with the foamed board material 11, when compared at the same thickness, the most excellent results are obtained. Heat insulation can be obtained. Also,
Since the exposed surfaces of the foam board material 11 on both front and back sides have water repellency, the function of the heat insulating material 10 does not deteriorate due to moisture absorption and water absorption.

As shown in FIG. 2, in the heat insulating material 10, a one-sided corrugated cardboard is used as the corrugated cardboard 12, and the protruding portions 12 a of the one-sided corrugated cardboard are laminated so as to be in contact with the foamed board 11. 11 and cardboard material 1
Since the area of contact with 2 is reduced and heat conduction is suppressed, heat insulation is good. In addition, as the cardboard material 12, not only single-sided cardboard but also double-sided cardboard, double-sided cardboard, and the like can be suitably used.

Also, a foam board material 11 and a corrugated cardboard material 12
Is bonded by starch glue, so that if the used heat insulating material 10 is immersed in water, the adhesive strength is lost and the foam board material 11 and the corrugated cardboard material 12 can be easily separated. In addition, waste can be reduced. As the adhesive, an aqueous emulsion or a hot melt can be used.

Since okara is used as the material of the foam board material 11, it does not adversely affect the human body or the natural world during incineration and disposal after use as well as during use. Further, in recent years, okara, which is rarely used for food and is largely discarded, can be reused. In addition, besides okara, bran, cereal flour, cereal grains, plant powder such as pulp, and plant fiber can be used.

The foam board material 11 has a thickness of about 3 mm, and the corrugated cardboard material 12 has a thickness of about 4.5 mm. By applying pressure, the overall thickness of the heat insulating material 10 becomes about 25 mm. I have. By changing the thickness of the foam board material 11 and the corrugated cardboard material 12, the number of laminated boards, and the pressing force, the thickness of the heat insulating material 10 can be changed according to the application. Further, the length 13 and the width 14 of the heat insulating material 10 can be changed within the range of 20 mm to 3000 mm and 20 mm to 1000 mm, respectively, depending on the use.

Further, by appropriately selecting the material of the corrugated cardboard material 12, the type of adhesive, the surface treatment agent, the coating agent, and the like, the heat insulating material 10 can be provided with water resistance, flame retardancy, antibacterial properties, and the like. .

Next, a heat insulating material 20 according to a second embodiment of the present invention will be described with reference to FIG. Insulation material 20
Are four foam board materials 21 and four cardboard materials 22
Are alternately laminated, and the foamed board material 23 is also adhered to the end face portions of the foamed board material 21 and the corrugated cardboard material 22.

With such a configuration, all exposed surfaces of the heat insulating material 20 are covered with the foam board materials 21 and 23,
Since the structure is such that the air is sealed in the corrugated cardboard 22, the heat insulating property is further improved, and the strength of the corrugated cardboard 22 due to moisture absorption, water absorption, deterioration of the heat insulating property, and the like can be prevented.

Since the materials and functions of the foam board materials 21 and 23 and the corrugated cardboard material 22 are the same as those of the foam board material 11 and the corrugated cardboard material 12, the heat insulating material 20 exhibits the same heat insulating property and strength as the conventional heat insulating material. I do. In addition, the foam board materials 21 and 23 and the corrugated cardboard material 22 containing Okara and synthetic resin have biodegradability and do not generate toxic gas when burned. Therefore, after use, they are incinerated or disposed of underground. Disposal is possible.

Next, referring to FIG. 4, a description will be given of a wall structure of a concrete building formed by using the heat insulating material 20. FIG. A heat insulating material 20 having a corrugated cardboard auxiliary member 24 attached to its surface is attached to a concrete wall 40, and a gypsum board 41 is adhered to the surface of these auxiliary members 24.
Since the heat insulating material 20 and the gap formed between the heat insulating material 20 and the gypsum board 41 exhibit a heat insulating function, the cooling and heating efficiency in the concrete building is improved, and during the heating period, the condensation on the indoor wall surface is reduced. Can be prevented.

Further, the heat insulating material 20 that has been used by demolishing or renovating a concrete building is:
Since it has biodegradability and does not emit toxic gas during combustion, it can be incinerated or disposed of underground.
It is effective for labor saving of construction waste material treatment.

Next, with reference to FIG. 5, a description will be given of the wall structure of the cool car formed by using the heat insulating material 20. FIG. The heat insulating material 20 is sandwiched between a plurality of metal wall materials 50 to form a wall structure. Since the heat insulating material 20 exhibits the same heat insulating property as that of the conventional urethane foam or the like, an excellent cooling effect can be obtained.

Unlike the conventional urethane foam injection method, since the heat insulating material 20 is not attached to the metal wall material 50, the heat insulating material 20 and the metal wall material 50 can be easily separated at the time of disassembly. Labor saving of dismantling work and reuse of metal materials can be achieved. Also, as described above, the heat insulating material 20
Since it is biodegradable and does not generate toxic gases when burned, it can be incinerated or disposed of underground.

As described above, the heat insulating material 20 can be suitably used as a wall structure material of a concrete building or a wall structure material of a cool car. However, the heat insulating material of the present invention is not limited to these uses. And other materials for refrigeration equipment, construction materials, storage materials, packing materials, structural members, and the like.

[0034]

According to the present invention, the following effects can be obtained.

(1) By alternately laminating one or a plurality of corrugated cardboard materials with a foamed board material containing a plant powder, a plant fiber body and a synthetic resin, it is equivalent to a synthetic resin board material or urethane foam. Since a foamed board material having a heat insulating function and a relatively high-strength corrugated cardboard material are alternately laminated, a heat insulating material exhibiting the same heat insulating property and strength as conventional can be obtained. In addition, plant powder and granules, foamed board material containing plant fiber and synthetic resin, and corrugated cardboard material are all biodegradable and do not generate toxic gases when burned. Disposal into is possible.

(2) By laminating the foamed board material so as to be positioned on the front and back surfaces of the heat insulating material after lamination, the front and back surfaces are covered with the foamed board material. The most excellent heat insulation can be obtained.

(3) By adhering the foam board material to the end face of the corrugated cardboard material, the exposed surface of the heat insulating material is entirely covered with the foam board material, and a structure is obtained in which air is sealed in the corrugated cardboard material. , Can further improve the heat insulation,
It is possible to prevent the cardboard material from absorbing moisture, reducing strength due to water absorption, and deteriorating heat insulation.

(4) A single-sided corrugated cardboard material is used as a corrugated cardboard material, and the single-sided corrugated cardboard material is laminated so that the protruding portion thereof is in contact with the foamed board material. Since the conduction is reduced, the heat insulation is improved.

(5) By using at least one of okara, bran, cereal flour, cereal grain, and pulp as a plant powder or a plant fiber, incineration or disposal after use during or after use. In this case, a heat insulating material that does not adversely affect the human body or the natural world can be obtained. Also,
Mostly discarded okara and bran can be reused.

(6) By interposing the heat insulating material according to the present invention between a plurality of layers of wall material constituting the wall surface, it has the same heat insulating property and strength as the conventional one, and the disposal of waste material after disassembly is easy. A simple wall structure can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a heat insulating material according to a first embodiment.

FIG. 2 is an exploded perspective view of the heat insulating material shown in FIG.

FIG. 3A is a perspective view showing a heat insulating material according to a second embodiment, and FIG. 3B is an exploded perspective view of the heat insulating material shown in FIG.

FIG. 4 is a sectional view showing a wall structure of a concrete building using the heat insulating material shown in FIG. 3 (a).

FIG. 5 is a cross-sectional view illustrating a wall structure of a cool car using the heat insulating material shown in FIG.

FIG. 6 is a cross-sectional view showing a wall structure of a conventional concrete building.

FIG. 7 is a cross-sectional view illustrating a wall structure of a conventional cool car.

[Explanation of symbols]

 10, 20 Insulation material 11, 21, 23 Foam board material 12, 22, Corrugated cardboard material 12a Convex portion 13 Length of insulation material 14 Width of insulation material 24 Auxiliary member 40 Concrete wall 41 Gypsum board 50 Metal wall material

 ──────────────────────────────────────────────────続 き Continued on front page F-term (reference) 2E001 DB05 DD01 EA01 FA03 GA03 GA42 HA03 HC09 HD01 JC00 JC02 JC03 JD01 LA04 4F100 AJ02A AJ02H AJ07G AK01A AP00A BA08 BA10A BA10B DD12B DE01A DE01H DG01A DJ01JB GBB

Claims (6)

[Claims] 1. A heat insulating material formed by alternately laminating a foamed board material containing a plant powder, a plant fiber and a synthetic resin, and one or more cardboard materials. 2. The heat insulating material according to claim 1, wherein the foamed board material is laminated so as to be located on the front surface and the back surface of the laminated heat insulating material. 3. The heat insulating material according to claim 1, wherein the foamed board material is adhered to an end portion of the corrugated cardboard material. 4. The heat insulating material according to claim 1, wherein the corrugated cardboard material is a single-sided corrugated cardboard material, and the convex portion of the single-sided corrugated cardboard material is laminated so as to be in contact with the foamed board material. 5. The heat insulating material according to claim 1, wherein at least one of okara, bran, cereal flour, cereal grain, and pulp is used as the plant powder and plant fiber. 6. A wall structure wherein the heat insulating material according to claim 1 is interposed between a plurality of layers of wall material constituting a wall surface.