JP2007321951A - Vacuum heat insulating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material conformable to the shape of an apparatus in use and sufficiently enhancing a heat insulating effect. <P>SOLUTION: The vacuum heat insulating material is formed in box shape comprising at least a core material and an external wrapping material enclosing the core material and maintaining the interior in a reduced pressure state. The core material has a bent part bent together with the external wrapping material, and the core material before enclosed in the external wrapping material has a deployed shape of a box and is integrally formed. The core material is enclosed in the external wrapping material 120 and bent in the reduced pressure state to form the bent part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum heat insulating material having a box shape.

  A vacuum heat insulating material is used in a device such as a container that needs to be insulated in order to keep warm and cool. Such an apparatus has a structure in which a vacuum heat insulating material is arranged around a space for keeping warm and cold.

  For example, there exists what arrange | positioned the several vacuum heat insulating material around the refrigerator compartment (for example, refer patent document 1). In this apparatus, a plurality of vacuum heat insulating materials spaced apart from each other are arranged around the refrigerator compartment, and the entire periphery of the refrigerator compartment is not covered with the vacuum heat insulating material.

  In addition, some have a cylindrical vacuum heat insulating material for keeping a columnar space such as a water heater (see, for example, Patent Document 2).

Thus, the vacuum heat insulating material needs to be appropriately determined according to the shape and size of the space for keeping warm and cold.
Japanese Patent No. 3408101 JP 2000-249290 A

  Since a plurality of vacuum heat insulating materials arranged around the refrigerator compartment described above uses a plurality of vacuum heat insulating materials that are separated from each other, in a place where there is no vacuum heat insulating material, heat insulation cannot be performed sufficiently. It was impossible to insulate, and the insulation efficiency had to be low.

  In addition, those having a cylindrical vacuum heat insulating material need to make the vacuum heat insulating material easily deformable by forming a plurality of grooves in the core of the vacuum heat insulating material in advance, and the processing must be complicated. There wasn't.

  This invention is made in view of the above-mentioned point, The place made into the objective is adaptable to the shape of the apparatus etc. which are used, The vacuum heat insulating material which can fully improve the heat insulation effect It is to provide.

  In order to achieve the above object, in the present invention, a vacuum heat insulating material in which an integrally formed core material is stored in an outer packaging material is used, and the core material is bent and molded in a state of being stored in the outer packaging material. .

Specifically, the vacuum heat insulating material according to the present invention is:
A vacuum insulation material having at least a core material, and an outer packaging material capable of accommodating the core material and maintaining the inside in a reduced pressure state, and having a box shape,
The core material has a bent portion that is bent together with the outer packaging material,
The core material before being housed in the outer packaging material has a shape in which the box is developed, and is integrally molded,
The bent portion is formed by folding the core material in a state where the core material is housed in the outer packaging material and is decompressed.

  Since the core material is integrally formed and is folded together with the outer packaging material to assemble the box body, it is possible to reduce the number of seams when assembled as a box body. For this reason, heat retention and cold insulation can be improved rather than combining a plurality of separate vacuum heat insulating materials into a box. The assembly of the box is performed by folding the core material in a state where the core material is housed in the outer packaging material and the pressure is reduced.

  In addition, since the vacuum heat insulating material in the form of a box can be provided, the shape of the vacuum heat insulating material can be pre-adapted to the shape of the container, equipment or device that uses the vacuum heat insulating material, eliminating gaps or seams. Therefore, it is possible to enhance the heat insulation effect and facilitate the manufacture of containers, devices, and apparatuses using a vacuum heat insulating material.

  Here, a box means what was formed in the box shape by the wall surface, and should just be what was at least partially enclosed by the wall surface. In addition, it is not necessary that all the surfaces are surrounded by the wall surface, and some of them are open.

The vacuum heat insulating material according to the present invention is
The outer packaging material is larger than the core material;
It is preferable that the outer packaging material has an excessive portion that does not contact the core material.

  Since the outer packaging material has a larger size than the core material, the core material can be smoothly accommodated in the outer packaging material, and the work efficiency can be improved.

Furthermore, the vacuum heat insulating material according to the present invention is
It is preferable that the surplus portion is pulled out toward the outside of the box to closely contact the sides of the adjacent wall surfaces forming the box.

  The surplus portion exists between two adjacent wall surfaces when assembled as a box. The surplus portion is a so-called “fin”, which is a portion where the outer packaging material and the core material do not overlap or come into contact with each other, and the outer packaging material overlaps or comes into contact with each other.

  In the vacuum heat insulating material using the outer packaging material, the surplus portion is inevitably generated in order to form a sealed space, but the surplus portion itself is not a portion having a heat insulating effect. Therefore, from the whole vacuum heat insulating material, the surplus part is merely a surplus part.

  On both sides of the surplus part across the surplus part, there are places to be two wall surfaces. These two wall surfaces are wall surfaces that are adjacent to each other when the vacuum heat insulating material is assembled as a box. The two wall surfaces can be brought close to each other by assembling the box while pulling out so that the surplus part is outside the box. Further, when the box is assembled by sufficiently pulling out the surplus portion, the sides of the two adjacent wall surfaces can be sufficiently brought into close contact with each other.

  By doing in this way, the space | gap which can arise between the sides of two wall surfaces can be made small enough, or it can prevent that a space | gap is formed, and the heat insulation effect can be heightened more. Thus, the surplus part which does not have a heat insulation effect can be utilized effectively, and a surplus part can be utilized as a member which improves a heat insulation effect indirectly.

Furthermore, the vacuum heat insulating material according to the present invention is:
It is preferable that the surplus portion drawn out toward the outside of the box is attached to the adjacent wall surface.

  Thus, since a surplus part is stuck on a wall surface, a vacuum heat insulating material can be stored in a container, a device, or an apparatus using a vacuum heat insulating material without being obstructed by the surplus part. Moreover, since an excess part can be fixed to a wall surface by sticking an excess part to a wall surface, the close state of the edge | side of two adjacent wall surfaces can be maintained, and the heat insulation effect can be maintained.

Furthermore, the vacuum heat insulating material according to the present invention is
It is preferable that one getter agent is provided in the interior covered with the outer packaging material.

  The getter agent may be an adsorbent capable of adsorbing not only gas and moisture generated inside the vacuum heat insulating material but also gas and water entering the vacuum heat insulating material from the outside.

  As described above, since the core material is integrally formed, the interior of the core material communicates with the entire core material. For this reason, the gas and moisture of the whole vacuum heat insulating material can be absorbed by providing one getter agent for one vacuum heat insulating material. On the other hand, when a plurality of separate vacuum heat insulating materials are used, it is necessary to provide a getter agent for each. As described above, since the entire vacuum heat insulating material according to the present invention can be completed with one getter agent, the configuration can be simplified and the cost can be reduced.

Furthermore, the vacuum heat insulating material according to the present invention is:
It is preferable that a groove for defining the bent portion is formed in the core material.

  Since the groove is formed in the core material, the bent portion can be accurately formed, and the operation of assembling as a box can be facilitated. Even if the groove is formed in the core material before being stored in the outer packaging material, the groove is formed in the core material from the outside of the outer packaging material after the core material is stored in the outer packaging material. May be.

The vacuum heat insulating material according to the present invention is
It is preferable that at least one of the wall surfaces forming the box is a flat surface.

  Since at least one of the wall surfaces is a plane, for example, the shape of the vacuum heat insulating material can be not only a rectangular parallelepiped, but also a polygonal pyramid or a polygonal column such as a triangular pyramid or a triangular prism, and a vacuum heat insulating material is used. The shape of the box can be appropriately determined according to the shape of the container, device, or apparatus.

Furthermore, the vacuum heat insulating material according to the present invention is
What provided the sealing member between the adjacent wall surfaces which form the said box is preferable.

  By providing the seal member between the adjacent wall surfaces, the heat insulation effect can be further enhanced and maintained.

Furthermore, the vacuum heat insulating material according to the present invention is:
It is preferable that one of the adjacent wall surfaces forming the box body overlaps the other wall surface.

  Since a part of adjacent wall surfaces overlaps, it can be made harder to produce a clearance gap between wall surfaces, and the heat insulation effect can be further improved and maintained. In addition, since the wall surfaces overlap only in part, the space occupied by the vacuum heat insulating material does not increase, and the vacuum heat insulating material can be used without changing the container, equipment, or device that uses the vacuum heat insulating material. Can be incorporated into the device.

  The vacuum heat insulating material can be adapted to the shape of the equipment or the like using the vacuum heat insulating material, and the heat insulating effect of the equipment or the like using the vacuum heat insulating material can be sufficiently enhanced.

  Embodiments of the present invention will be described below with reference to the drawings.

<<<< first embodiment >>>>
<< Core 110 >>
<Shape of core material 110>
FIG. 1 is a front view showing the entire core material 110 used for the vacuum heat insulating material 100 in the first embodiment.

  The core member 110 shown in FIG. 1 has a sheet shape and a substantially cross shape, and includes five wall surfaces 112a to 112e. The five wall surfaces 112a to 112e are continuously integrated to form the core material 110. That is, the five wall surfaces 112a to 112e are not separated from each other and are continuous. The core member 110 is preferably formed so that one sheet-like core member has a substantially cross shape. In addition, you may form so that it may become united continuously as a whole by forming separately for every five wall surfaces 112a-112e, and connecting so that these may connect. By using the core material 110 that is continuously integrated in this way, the core material 110 can be easily handled.

  The core material 110 shown in FIG. 1 is used for a vacuum heat insulating material that has a rectangular parallelepiped shape when assembled, and has a shape in which a rectangular parallelepiped is developed. That is, a rectangular parallelepiped can be formed by bending at the broken line shown in FIG. The broken lines shown in FIG. 1 indicate the boundary line B1 between the wall surface 112a and the wall surface 112b, the boundary line B2 between the wall surface 112a and the wall surface 112c, the boundary line B3 between the wall surface 112a and the wall surface 112d, and the wall surface 112a and the wall surface 112e. A boundary line B4 is shown.

  The rectangular parallelepiped in the first embodiment is not composed of six wall surfaces, but is composed of five wall surfaces 112a to 112e. The wall surface 112a of the core member 110 is a bottom surface of the rectangular parallelepiped, and the four wall surfaces 112b to 112e are side surfaces of the rectangular parallelepiped. As will be described later, the assembly is performed by folding the vacuum heat insulating material 100 composed of the core material 110 and the outer packaging material 120, and the core material 110 is formed by being bent alone. There is no.

  The broken lines shown in FIG. 1 are shown in order to clarify the above-described four boundary lines B1 to B4. However, even if a bending groove is formed in advance at each of the boundary lines B1 to B4. Good. The bending groove can be formed by pressing an elongated pressurizing body (not shown) against the surface of the core member 110. By forming the bending groove, it can be easily bent at an appropriate position, so that it can be easily assembled into a desired rectangular parallelepiped.

<Material of core material 110>
Although the core material 110 is not specifically limited, a fiber aggregate, an open cell foam, etc. are used. A fiber assembly is preferable from the viewpoint of heat insulation and flexibility. From the viewpoint of workability, the fiber aggregate is preferably used in a sheet form as described above. In the present invention, “sheet shape” means having a flat plate shape. When the fiber assembly is used in the “wadding state” as it is, the handling property of the core material 110 is lowered, so that the process of housing the core material 110 in the outer packaging material 120 described later becomes too complicated, and the workability is improved. Gets worse.

  The fiber assembly is composed of inorganic fibers, organic fibers, or a mixture thereof.

  Examples of the inorganic fiber include glass fiber (glass wool), alumina fiber, slag wool fiber, silica fiber, rock wool, and the like.

  Examples of organic fibers include polyester fibers, acrylic fibers, polyethylene fibers, polypropylene fibers, nylon fibers, polyvinyl alcohol fibers, polyurethane fibers, polynosic fibers, rayon fibers, and other synthetic fibers, and natural fibers such as hemp, silk, cotton, and wool. Etc. An inorganic fiber and an organic fiber are used as single fiber which consists of 1 type, or multiple types of mixed fiber.

<< Outer packaging material 120 >>
<Shape of outer packaging material 120>
FIG. 2 is a perspective view showing a state when the core material 110 is stored in the outer packaging material 120.

  As shown in FIG. 2, the outer packaging material 120 has a bag-like shape formed by two sheet-shaped outer packaging materials 122a and 122b. Each of the two sheet-like outer packaging materials 122a and 122b has a square or rectangular shape having the same size. Two sheet-like outer packaging materials 122a and 122b are overlapped with each other and formed into a bag shape by heat-sealing the edges of three of the four sides defining the outer shape of the outer packaging materials 122a and 122b. be able to. One side that is not heat-sealed becomes the opening 124 of the bag-shaped outer packaging material 120. By making the outer packaging material 120 into a bag-like shape, the inside of the outer packaging material 120 is decompressed, and then one side forming the opening 124 is heat-sealed, whereby the vacuum heat insulating material 100 can be formed. Since it is sufficient to heat seal only, work efficiency can be improved.

  Each of the two sheet-like outer packaging materials 122a and 122b includes a plurality of layers including an outermost layer and an innermost layer. The innermost layers of the sheet-like outer packaging materials 122a and 122b are configured to be the back surface of the bag-shaped outer packaging material 120, that is, the innermost layer is configured to be the inner surface of the bag-shaped outer packaging material 120. By doing in this way, the vacuum state inside the bag-shaped outer packaging material 120 can be sufficiently maintained.

  The size of the outer packaging material 120 (the outer packaging materials 122a and 122b) is preferably larger than the core material 110 to such an extent that the core material 110 can be accommodated efficiently and accurately.

<Material of outer packaging materials 122a and 122b>
As the outer packaging materials 122a and 122b, any material can be used as long as it has gas barrier properties, can maintain the inside at a reduced pressure, and can be heat-sealed. As described above, each of the outer packaging materials 122a and 122b includes a plurality of layers, and various materials are used for each of the layers.

  As preferable specific examples of the outer packaging materials 122a and 122b, there are the following gas barrier films. For example, a four-layer gas barrier film in which the outermost layer is nylon, the first intermediate layer is aluminum-deposited PET (polyethylene terephthalate), the second intermediate layer is aluminum foil, and the innermost layer is high-density polyethylene. There is. There is a gas barrier film having a three-layer structure in which the outermost layer is a polyethylene terephthalate resin, the intermediate layer is an aluminum foil, and the innermost layer is a high-density polyethylene resin. Furthermore, there is a gas barrier film having a three-layer structure in which the outermost layer is a PET resin, the intermediate layer is an ethylene-vinyl alcohol copolymer resin having an aluminum vapor deposition layer, and the innermost layer is a high-density polyethylene resin.

<< Vacuum insulation 100 >>
<Formation of vacuum heat insulating material 100>
As shown in FIG. 2, after the core material 110 is stored in the bag-shaped outer packaging material 120, the inside of the outer packaging material 120 is decompressed, and the opening 124 is heat-sealed as shown in FIG. 3. The vacuum state can be maintained and the vacuum heat insulating material 100 can be formed. Note that the above-described bent groove may be formed at this stage. That is, by pressing an elongated pressurizing body (not shown) from the outside of the outer packaging material, a bending groove can be formed on the core material together with the outer packaging material.

<Excess portions 126a to 126d>
FIG. 3 is a front view illustrating a state in which the vacuum insulating material 100 is formed by housing the core material 110 in the bag-shaped outer packaging material 120 and heat-sealing the opening.

  As described above, the outer packaging material 120 has a square or rectangular shape, and the core material 110 has a substantially cross-shaped shape. For this reason, surplus portions 126 a to 126 d that do not contact the core material 110 are formed in the outer packaging material 120. The surplus portions 126a to 126d are portions where the outer packaging material 120 does not overlap or contact the core material 110, and are portions where the outer packaging materials 122a and 122b are in contact, so-called “fins”.

  As shown in FIG. 3, a surplus portion 126b is formed between the wall surfaces 112b and 112c of the core member 110, and a surplus portion 126c is formed between the wall surfaces 112c and 112d, and the wall surfaces 112d and 112e A surplus portion 126d is formed between them, and a surplus portion 126a is formed between the wall surfaces 112e and 112b.

<< Getter Agent 130 >>
<Function of getter agent 130>
A getter agent 130 is provided in the outer packaging material 120. After the inside of the outer packaging material 120 is decompressed and the opening 124 is heat-sealed, gas, for example, outgas or moisture may be generated from the core material 110 inside the outer packaging material 120. In addition, gas or moisture may enter from the outside to the inside of the outer packaging material 120. For this reason, it is preferable to store the getter agent 130 capable of adsorbing gas and moisture together with the core material 110 inside the outer packaging material 120.

  By storing the getter agent 130 in the outer packaging material 120 as described above, gas and moisture can be absorbed by the getter agent 130, so that the heat insulating effect of the vacuum heat insulating material 100 can be maintained for a longer time.

<Number and arrangement of getter agents 130>
As shown in FIG. 3, the vacuum heat insulating material 100 is formed by housing the core material 110 in a bag-shaped outer packaging material 120 and heat-sealing the opening. For this reason, since the inside of the outer packaging material 120 becomes one space closed by the entire vacuum heat insulating material 100, only one getter agent 130 may be disposed in the vacuum heat insulating material 100.

  Further, the getter agent 130 can adsorb gas and moisture existing over the entire vacuum heat insulating material 100 by being located at or near the position of the approximate center of the vacuum heat insulating material 100. The function of the agent 130 can be exhibited.

  Furthermore, since the amount of gas and moisture changes according to the size of the vacuum heat insulating material 100 and the core material 110, the size of the getter agent 130 is also appropriately determined according to the size of the vacuum heat insulating material 100 and the core material 110. Just do it.

<Material of getter agent 130>
The substance capable of adsorbing gas and moisture is not particularly limited, and examples of substances that physically adsorb gas and moisture include activated carbon, silica gel, aluminum oxide, molecular sieve, and zeolite. Also, those that chemically adsorb gas, moisture, etc. are, for example, calcium oxide, barium oxide, calcium chloride, magnesium oxide, magnesium chloride, metal powder materials such as iron and zinc, barium-lithium alloys, zirconium There are system alloys.

<< Assembly of vacuum heat insulating material 100 >>
FIG. 4 is a perspective view showing a process of assembling the vacuum heat insulating material 100.

<Bending the wall>
As shown in FIG. 4, in order to assemble the vacuum heat insulating material 100, the wall surfaces 112b and 112c are bent at right angles to the wall surface 112a. By doing in this way, the bending part 128b is formed between the wall surface 112a and the wall surface 112b, and the bending part 128c is formed between the wall surface 112a and the wall surface 112c.

<Drawer of surplus part 126b>
When the wall surface 112b and the wall surface 112c are bent at a right angle with respect to the wall surface 112a, as shown by an arrow in FIG. 4, the surplus portion 126b formed between the wall surface 112b and the wall surface 112c is It is made to be pulled out from between 112c.

<Fixing of surplus portion 126b>
Further, as shown in FIG. 5A, the excessive portion 126b is bent toward the wall surface 112b, and the bent excessive portion 126b is brought into contact with the outer packaging material 120 covering the wall surface 112b. FIG. 5A is a plan view of the state when the vacuum heat insulating material 100 is assembled as seen from above. In FIG. 5A, in order to clearly show the outer packaging material 120, the outer packaging material 120 is shown as being separated from the core material 110. However, since the inside of the outer packaging material 120 is actually depressurized, The material 120 is in close contact with the core material 110. By fixing the surplus portion 126b with the adhesive tape 132 to the outer packaging material 120 covering the wall surface 112b, as shown in FIG. 129 can be formed. Thus, by forming the contact part 129, the wall surface 112b and the wall surface 112c can be closely_contact | adhered, and the heat insulation effect of the vacuum heat insulating material 100 of a box can be improved.

<Function of surplus part 126b>
By assembling in this way, the gap that can be generated between the two wall surfaces 112b and 112c can be made sufficiently small, or the formation of a gap can be prevented, and the heat insulation effect can be further enhanced. . Thus, the surplus part 126b which does not have a heat insulation effect can be used effectively, and the surplus part 126b can be utilized as a member which improves a heat insulation effect indirectly.

<Excess portions 126a, 126c and 126d>
4 and 5A illustrate the surplus portion 126b formed between the wall surface 112b and the wall surface 112c, but the other three surplus portions 126a, 126c, and 126d are similarly processed. be able to. That is, the surplus portion 126c formed between the wall surfaces 112c and 112d is drawn out from between the wall surfaces 112c and 112d. By pulling out the surplus portion 126c to the outside, the wall surfaces 112c and 112d can be brought into close contact with each other. Further, the surplus portion 126d formed between the wall surfaces 112d and 112e is drawn out from between the wall surfaces 112d and 112e. By pulling out the surplus portion 126d to the outside, the wall surfaces 112d and 112e can be brought into close contact with each other. Further, the surplus portion 126a formed between the wall surfaces 112e and 112b is drawn out from between the wall surfaces 112e and 112b. By pulling out the surplus portion 126a to the outside, the wall surfaces 112e and 112b can be brought into close contact with each other.

<Heat insulation effect of vacuum heat insulating material 100>
Thus, by pulling out all of the four surplus portions 126a to 126d toward the outside, the wall surface 112b and the wall surface 112c are brought into close contact with each other, the wall surface 112c and the wall surface 112d are brought into close contact with each other, and the wall surface 112d and the wall surface 112e are brought into contact with each other. And the wall surface 112e and the wall surface 112b can be adhered to each other. By adhering the sides of the adjacent wall surfaces to each other, it is possible to prevent a gap from being formed between the sides of the adjacent wall surfaces, or to reduce the gap. Can be increased.

  Moreover, since the core material 110 continuously integrated is used, it is possible to accurately insulate at the four boundary lines B1 to B4, and to be used for equipment that needs to insulate the bottom and the vicinity of the bottom. Can do.

<Elastic sealing material 134>
Further, as shown in FIG. 5B, an elastic sealing material 134 may be attached to the outside of the contact portion 129. FIG. 5B is a plan view of the state when the vacuum heat insulating material 100 is assembled as seen from above, as in FIG. Also in FIG. 5B, the outer packaging material 120 is shown as being separated from the core material 110 in order to clearly show the outer packaging material 120. Examples of the elastic sealing material 134 include a foamed plastic sealing material, a silicon rubber sealing material, and a butyl rubber sealing material.

  Specifically, a foamed polyethylene sheet, a foamed polypropylene sheet, a foamed polyurethane sheet, an ethylene-vinyl acetate copolymer (EVA), a foam sheet, or a polyvinyl chloride (PVC) foam sheet can be considered. Preferred foamed plastic sheets are foamed polyethylene sheets and foamed urethane sheets having a foaming ratio of about 10 to 50 times.

  By assembling in this way, even if a gap is generated between the two wall surfaces 112b and 112c, the heat insulation effect can be enhanced.

<Formation of bending groove>
Further, in the first embodiment described above, the case where the bending groove is formed in the core material 110 in a state before the core material 110 is accommodated in the outer packaging material 120 has been described. A folded groove may be formed from the outside of the outer packaging material 120 in the housed state.

<Other shapes of box>
Furthermore, although the case where the shape of the vacuum heat insulating material 100 when assembled was a rectangular parallelepiped was shown in the first embodiment, the shape is not limited to a rectangular parallelepiped and may be a box when assembled. For example, a triangular prism Alternatively, a vacuum heat insulating material having a box shape formed of a plurality of wall surfaces such as a triangular pyramid may be used.

<<< Second Embodiment >>>
FIG. 6 is a front view showing a vacuum heat insulating material 200 according to the second embodiment.

  Although 1st Embodiment showed the case where the vacuum heat insulating material 100 was assembled without changing the shape of the bag-shaped outer packaging material 120, the vacuum heat insulating material 200 by 2nd Embodiment is bag-shaped. The outer packaging material 220 is cut and the vacuum heat insulating material 200 is assembled.

<< Core 110 >>
<Shape and material of core material>
The core material 110 used for the vacuum heat insulating material 200 in the second embodiment is made of the same material as that in the first embodiment, has the same shape and function, and is the same as shown in FIG. The code | symbol was attached | subjected.

  As shown in FIG. 6, the core member 110 has a sheet shape and a substantially cross shape, and includes five wall surfaces 112 a to 112 e. The five wall surfaces 112a to 112e are continuously integrated to form the core material 110. That is, the five wall surfaces 112a to 112e are not separated from each other and are continuous. The core member 110 is preferably formed so that one sheet-like core member has a substantially cross shape. In addition, you may form so that it may become united continuously as a whole by forming separately for every five wall surfaces 112a-112e, and connecting so that these may connect. By using the core material 110 that is continuously integrated in this way, the core material 110 can be easily handled.

<< Outer packaging material 120 >>
<The shape and material of the outer packaging material 120>
The outer packaging material 220 used for the vacuum heat insulating material 200 in the second embodiment has the same materials and functions as the outer packaging material 120 in the first embodiment. That is, the two sheet-like outer packaging materials 222a and 222b constituting the outer packaging material 220 have the same materials and functions as the two sheet-like outer packaging materials 122a and 122b in the first embodiment. Moreover, before assembling as the vacuum heat insulating material 200, the shape of the outer packaging material 220 also has the same shape as the outer packaging material 120 in the first embodiment, as shown in FIG.

  The outer packaging material 220 has a bag-like shape formed by two sheet-shaped outer packaging materials 222a and 222b. Two sheet-like outer packaging materials 222a and 222b are overlapped with each other and formed into a bag shape by heat-sealing the edges of three sides of the four sides that define the outer shape of the outer packaging materials 222a and 222b. can do. One side that is not heat-sealed becomes an opening 224 of the bag-shaped outer packaging material 220.

<< Getter Agent 130 >>
The getter agent 130 used for the vacuum heat insulating material 200 in the second embodiment has the same shape, size, material, and function as those in the first embodiment, and is arranged at the same position. As shown in FIG. 6, the same reference numerals are given.

<< Vacuum insulation 200 >>
As shown in FIG. 6, after the core material 110 is housed in the bag-like outer packaging material 220, the inner pressure of the outer packaging material 220 is reduced, and the opening 224 is heat-sealed to maintain the reduced pressure state. The vacuum heat insulating material 200 can be formed.

<< Surplus part >>
<Formation of surplus part>
As shown in FIG. 6, a surplus portion 226b is formed between the wall surfaces 112b and 112c of the core member 110, and a surplus portion 226c is formed between the wall surfaces 112c and 112d, and the wall surfaces 112d and 112e A surplus portion 226d is formed between them, and a surplus portion 226a is formed between the wall surfaces 112e and 112b.

<Formation of heat seal part>
In the surplus portion 226b, the outer packaging material 220 is heat-sealed along the wall surfaces 112b and 112c to form the heat seal portion 228b. Similarly, the outer packaging material 220 is heat-sealed along the wall surfaces 112c and 112d in the surplus portion 226c to form a heat seal portion 228c, and the surplus portion 226d is along the wall surfaces 112d and 112e. The outer packaging material 220 is heat-sealed to form the heat-sealing portion 228d, and the outer-packaging material 220 is heat-sealed along the wall surfaces 112e and 112b in the surplus portion 226a to form the heat-sealing portion 228a.

  By doing in this way, it can heat-seal along the circumference | surroundings of the core material 110, and can maintain the pressure reduction state inside the outer packaging material 220 as it is.

<Cutting excess part>
Next, as shown in FIG. 7, the four surplus portions 226a to 226d are cut along the four heat seal portions 228a to 228d. By doing in this way, each of the four surplus parts 226a-226d can be made small.

<< Assembly of vacuum heat insulating material 200 >>
<Drawing out surplus part>
The vacuum heat insulating material 200 is assembled in the same manner as the vacuum heat insulating material 100 of the first embodiment. Also when assembling the vacuum heat insulating material 200, each of the surplus portions 226a to 226d is pulled out toward the outside of the two wall surfaces adjacent to these.

  That is, the surplus portion 226b formed between the wall surfaces 112b and 112c is pulled out from between the wall surfaces 112b and 112c. By pulling out the excess portion 226b to the outside, the wall surfaces 112b and 112c can be brought into close contact with each other. Further, the surplus portion 226c formed between the wall surfaces 112c and 112d is drawn out from between the wall surfaces 112c and 112d. By pulling out the surplus part 226c to the outside, the wall surfaces 112c and 112d can be brought into close contact with each other. Furthermore, the surplus portion 226d formed between the wall surfaces 112d and 112e is pulled out from between the wall surfaces 112d and 112e. By pulling out the excess portion 226d to the outside, the wall surfaces 112d and 112e can be brought into close contact with each other. Furthermore, the surplus part 226a formed between the wall surfaces 112e and 112b is drawn out from between the wall surfaces 112e and 112b. By pulling out the surplus part 226a to the outside, the wall surfaces 112e and 112b can be brought into close contact with each other.

<Fixing the surplus part>
Also in this vacuum heat insulating material 200, by fixing the drawn surplus portions 226a to 226d to the wall surfaces 112b to 112e with an adhesive tape, the two adjacent wall surfaces are brought into contact with each other accurately to form a contact portion. Can do. In this way, by adjoining the sides of the adjacent wall surfaces to each other, it is possible to prevent a gap from being formed between the sides of the adjacent wall surfaces or to reduce the gap. The heat insulation effect can be enhanced.

<Elastic sealing material 134>
Also, in the vacuum heat insulating material 200, the elastic seal material 134 shown in FIG. By doing in this way, even if it is a case where a gap arises between the sides of two adjacent wall surfaces, the heat insulation effect can be enhanced.

  As described above, in the second embodiment, since the surplus portion is cut and then assembled, the operation is not hindered by the surplus portion, and the assembly operation can be easily performed.

<<< Third Embodiment >>>
FIG. 8 is a front view showing the entire core 310 according to the third embodiment.

<< Core 310 >>
<Shape of core material 310>
The core material 310 shown in FIG. 8 has a sheet shape and a substantially T shape, and includes five wall surfaces 312a to 312e. The five wall surfaces 312a to 312e are continuously integrated to form the core material 310. That is, the five wall surfaces 312a to 312e are not separated from each other but are continuous. The core member 310 is preferably formed so that one sheet-like core member has a substantially T-shape. In addition, you may form so that it may become united continuously as a whole by forming separately for every five wall surfaces 312a-312e, and connecting so that these may connect. By using the core material 310 continuously integrated in this way, the core material 310 can be easily handled.

  A rectangular parallelepiped can be formed by bending at the broken line shown in FIG. The core material 310 shown in FIG. 8 is used for a vacuum heat insulating material that has a rectangular parallelepiped shape when assembled, and has a shape in which the rectangular parallelepiped is developed. The wall surface 312a of the core material 310 is a bottom surface of the rectangular parallelepiped, and the four wall surfaces 312b to 312e are side surfaces of the rectangular parallelepiped.

  The core material 110 according to the first embodiment is preferably used when it is necessary to enhance the heat insulation effect near the bottom surface and the bottom surface of the rectangular parallelepiped, since a gap is unlikely to occur near the bottom surface of the rectangular parallelepiped. On the other hand, the core material 310 according to the third embodiment is preferably used when it is necessary to enhance the heat insulation effect near the side surface or the side surface of the rectangular parallelepiped, because a gap is not easily generated on the side surface of the rectangular parallelepiped.

  The shape of the core material may be determined as appropriate in accordance with the location requiring the heat insulating effect in addition to those shown in the first embodiment and the third embodiment.

<< Outer packaging material >>
The outer packaging material 320 (not shown) used in the vacuum heat insulating material 300 in the third embodiment has the same materials and functions as those in the first embodiment. The shape and size of the outer packaging material 320 may be appropriately determined according to the shape and size of the core material 310. The outer packaging material 320 preferably has a bag-like shape like the outer packaging materials 120 and 220.

  The outer packaging material 320 is also composed of two sheet-shaped outer packaging materials (not shown), like the outer packaging materials 120 and 220. The two sheet-like outer packaging materials also have the same materials and functions as the two sheet-like outer packaging materials 122a and 122b in the first embodiment. A bag-shaped outer packaging material 320 is formed by the two sheet-shaped outer packaging materials.

<< Getter agent >>
The getter agent (not shown) used in the vacuum heat insulating material 300 (not shown) in the third embodiment also has the same shape, size, material, and function as those in the first embodiment. .

  As will be described later, the vacuum heat insulating material 300 is also formed by housing the core material 310 in a bag-shaped outer packaging material 320 and heat-sealing the opening. For this reason, since the inside of the outer packaging material 320 becomes one space closed by the entire vacuum heat insulating material 300, only one getter agent needs to be disposed in the vacuum heat insulating material 300.

  The getter agent can adsorb gas and moisture existing throughout the vacuum heat insulating material 300 by being located at or near the center of the vacuum heat insulating material 300. Can be demonstrated.

<< Vacuum insulation 300 >>
The core material 310 according to the third embodiment is also accommodated in the outer packaging material 320 in the same manner as in the first embodiment and the second embodiment. After housing the core material 310 in the outer packaging material 320, the vacuum heat insulating material 300 can be formed by decompressing the inside. Also in the third embodiment, as in the first embodiment and the second embodiment, the vacuum heat insulating material 300 is formed and then folded and assembled. In assembling the vacuum heat insulating material 300, the surplus portion (not shown) is pulled out toward the outside. By doing in this way, the adjacent wall surface can be stuck and the heat insulation effect can be heightened.

<< Cutting excess part >>
Further, as in the second embodiment, the vacuum insulating material 300 may be assembled by cutting the surplus portion. By doing in this way, an assembly operation can be performed without being disturbed by the surplus portion.

<<< Fourth embodiment >>>>
FIG. 9 is a front view showing the entire core material 410 according to the fourth embodiment.

<< Core 410 >>
<Shape and material of core material>
The core material 410 used for the vacuum heat insulating material 400 in the fourth embodiment is made of the same material as that in the first embodiment and has the same function.

  The core material 410 shown in FIG. 9 has a sheet shape and a substantially cross shape, and includes six wall surfaces 412a to 412f. The six wall surfaces 412a to 412f are continuously integrated to form the core material 410. That is, the six wall surfaces 412a to 412f are not separated from each other but are continuous. The core material 410 is preferably formed so that one sheet-shaped core material has a substantially cross shape. The six wall surfaces 412a to 412f may be formed as separate bodies and connected so that they are connected to each other so as to be continuously integrated as a whole. By using the core material 410 that is continuously integrated in this way, the core material 410 can be easily handled.

  The core material 410 shown in FIG. 9 is used for a vacuum heat insulating material that has a rectangular parallelepiped shape when assembled, and has a shape in which the rectangular parallelepiped is developed. That is, a rectangular parallelepiped can be formed by bending at the broken line shown in FIG. 9 indicate the boundary line B1 between the wall surface 412a and the wall surface 412b, the boundary line B2 between the wall surface 412a and the wall surface 412c, the boundary line B3 between the wall surface 412a and the wall surface 412d, and the boundary line between the wall surface 412a and the wall surface 412e. B4 and the boundary line B5 between the wall surface 412b and the wall surface 412f are shown.

  The rectangular parallelepiped in the first to third embodiments described above is composed of five wall surfaces, and one surface is open, but the rectangular parallelepiped in this fourth embodiment is , One composed of six wall surfaces 412a to 412f. The wall surface 412a of the core material 410 is a bottom surface of the rectangular parallelepiped, the four wall surfaces 412b to 412e are side surfaces of the rectangular parallelepiped, and the wall surface 412f is an upper surface of the rectangular parallelepiped. As will be described later, the assembly is performed by bending the vacuum heat insulating material 400 composed of the core material 410 and the outer packaging material 420, and the core material 410 is formed by being bent alone. There is no.

  The broken lines shown in FIG. 9 are shown in order to clarify the five boundary lines B1 to B5 described above. However, even if a bending groove is formed in advance in each of the boundary lines B1 to B5. Good. The bending groove can be formed by pressing an elongated pressurizing body (not shown) against the surface of the core material 410. By forming the bending groove, it can be easily bent at an appropriate position, so that it can be easily assembled into a desired rectangular parallelepiped.

<< Outer packaging material >>
An outer packaging material 420 (not shown) used in the vacuum heat insulating material 400 in the fourth embodiment has the same materials and functions as those in the first embodiment. The shape and size of the outer packaging material 420 may be appropriately determined according to the shape and size of the core material 410. The outer packaging material 420 preferably has a bag shape like the outer packaging materials 120 and 220.

  The outer packaging material 420 is also composed of two sheet-shaped outer packaging materials (not shown), like the outer packaging materials 120 and 220. The two sheet-like outer packaging materials also have the same materials and functions as the two sheet-like outer packaging materials 122a and 122b in the first embodiment. A bag-like outer packaging material 420 is formed by the two sheet-like outer packaging materials.

<< Getter agent >>
The getter agent (not shown) used in the vacuum heat insulating material 400 (not shown) in the fourth embodiment also has the same shape, size, material, and function as those in the first embodiment. .

  As will be described later, the vacuum heat insulating material 400 is also formed by housing the core material 410 in a bag-shaped outer packaging material 420 and heat-sealing the opening. For this reason, since the inside of the outer packaging material 420 becomes one space closed by the entire vacuum heat insulating material 400, only one getter agent needs to be disposed in the vacuum heat insulating material 400.

  The getter agent can adsorb gas and moisture existing throughout the vacuum heat insulating material 400 by being located at or near the center of the vacuum heat insulating material 400. Can be demonstrated.

<< Vacuum insulation 400 >>
The core material 410 according to the fourth embodiment is also accommodated in the outer packaging material 420 as in the first to third embodiments. After housing the core material 410 in the outer packaging material 420, the vacuum heat insulating material 400 can be formed by decompressing the inside. Also in the fourth embodiment, as in the first embodiment and the second embodiment, the vacuum heat insulating material 400 is formed and then folded and assembled. In assembling the vacuum heat insulating material 400, the surplus portion (not shown) is pulled out toward the outside. By doing in this way, the adjacent wall surface can be stuck and the heat insulation effect can be heightened.

<< Cutting excess part >>
Further, as in the second embodiment, the vacuum heat insulating material 400 may be assembled by cutting the surplus portion to some extent. By doing in this way, an assembly operation can be performed without being disturbed by the surplus portion.

  When assembled, the vacuum heat insulating material 400 in the fourth embodiment can be a rectangular parallelepiped having all six wall surfaces, so that the entire space to be insulated can be covered with the vacuum heat insulating material 400, and the heat insulating effect is further enhanced. be able to.

<<< Fifth Embodiment >>>
FIG. 10 is a front view showing the entire core material 510 according to the fifth embodiment.

<< Core material 510 >>
<Shape and material of core material>
The core material 510 used for the vacuum heat insulating material 500 in the fifth embodiment is made of the same material as that in the first embodiment and has the same function.

  The core material 510 shown in FIG. 10 has a sheet shape and a substantially cross shape, and includes five wall surfaces 512a to 512e. The five wall surfaces 512a to 512e are continuously integrated to form the core material 510. That is, the five wall surfaces 512a to 512e are not separated from each other but are continuous. The core member 510 is preferably formed so that one sheet-like core member has a substantially cross shape. In addition, you may form so that it may become united continuously as a whole by forming separately for every five wall surfaces 512a-512e, and connecting so that these may connect. By using the core material 510 that is continuously integrated in this way, the core material 510 can be easily handled.

  The core material 510 shown in FIG. 10 is used for a vacuum heat insulating material that has a rectangular parallelepiped shape when assembled, and has a shape in which the rectangular parallelepiped is developed. That is, a rectangular parallelepiped can be formed by bending at the broken line shown in FIG. The broken lines shown in FIG. 10 are the boundary line B1 between the wall surface 512a and the wall surface 512b, the boundary line B2 between the wall surface 512a and the wall surface 512c, the boundary line B3 between the wall surface 512a and the wall surface 512d, and the wall surface 512a and the wall surface 512e. A boundary line B4 is shown.

  The rectangular parallelepiped in the fifth embodiment is not composed of six wall surfaces, but is composed of five wall surfaces 512a to 512e. The wall surface 512a of the core material 510 is the bottom surface of the rectangular parallelepiped, and the four wall surfaces 512b to 512e are the side surfaces of the rectangular parallelepiped. As will be described later, the assembly is performed by bending the vacuum heat insulating material 500 formed of the core material 510 and the outer packaging material 520, and the core material 510 is formed by being bent alone. There is no.

  The broken lines shown in FIG. 10 are shown in order to clarify the above-described four boundary lines B1 to B4. However, even if a bending groove is formed in advance at each of the boundary lines B1 to B4. Good. The bending groove can be formed by pressing an elongated pressurizing body (not shown) against the surface of the core material 510. By forming the bending groove, it can be easily bent at an appropriate position, so that it can be easily assembled into a desired rectangular parallelepiped.

  As shown in FIG. 10, extending portions 514 a and 514 b are formed along the wall surface 512 b on the two side portions of the wall surface 512 b of the core member 510 in the fifth embodiment. In addition, extending portions 514c and 514d are formed along the wall surface 512d on the two side portions of the wall surface 512d. The extending portions 514a to 514d have a long rectangular shape. The length L of the extending portions 514a and 514b extending from the wall surface 512b or the length L of the extending portions 514c and 514d extending from the wall surface 512d is substantially the same as the thickness of the core material 510, or The extending portions 514a to 514d are formed to have a length slightly longer than the thickness of the core material 510.

<< Outer packaging material >>
An outer packaging material 520 (not shown) used in the vacuum heat insulating material 500 in the fifth embodiment has the same materials and functions as those in the first embodiment. The shape and size of the outer packaging material 520 may be appropriately determined according to the shape and size of the core material 510. The outer packaging material 520 is preferably a bag-like shape like the outer packaging materials 120 and 220.

  The outer packaging material 520 is also composed of two sheet-shaped outer packaging materials (not shown), like the outer packaging materials 120 and 220. The two sheet-like outer packaging materials also have the same materials and functions as the two sheet-like outer packaging materials 122a and 122b in the first embodiment. A bag-like outer packaging material 520 is formed by the two sheet-like outer packaging materials.

<< Getter agent >>
The getter agent (not shown) used in the vacuum heat insulating material 500 (not shown) in the fifth embodiment also has the same shape, size, material, and function as those in the first embodiment. .

  As will be described later, the vacuum heat insulating material 500 is also formed by housing the core material 510 in a bag-like outer packaging material 520 and heat-sealing the opening. For this reason, since the inside of the outer packaging material 520 becomes one space closed by the entire vacuum heat insulating material 500, only one getter agent needs to be disposed in the vacuum heat insulating material 500.

  The getter agent can adsorb gas and moisture existing throughout the vacuum heat insulating material 500 by being located at or near the center of the vacuum heat insulating material 500. Can be demonstrated.

<< Vacuum insulation 500 >>
Similarly to the first embodiment and the second embodiment, the core material 510 according to the fifth embodiment is also housed in the outer packaging material 520. After housing the core material 510 in the outer packaging material 520, the vacuum heat insulating material 500 can be formed by decompressing the inside. Also in the fifth embodiment, as in the first embodiment and the second embodiment, the vacuum heat insulating material 500 is formed and then folded and assembled. In assembling the vacuum heat insulating material 500, the surplus portion (not shown) is pulled out toward the outside. By doing in this way, the adjacent wall surface can be stuck and the heat insulation effect can be heightened.

<< Assembly of vacuum heat insulating material 500 >>
FIG. 11 is an enlarged plan view showing a state of two adjacent wall surfaces when the vacuum heat insulating material 500 is assembled. When the wall surface 512b and the wall surface 512c are bent at a right angle with respect to the wall surface 512a, the surplus portion 526b formed between the wall surface 512b and the wall surface 512c is directed outward from between the wall surface 512b and the wall surface 512c. To be pulled out. As shown in FIG. 11A, the surplus portion 526b is bent toward the wall surface 512b, and the bent surplus portion 526b is brought into contact with the outer packaging material 520 covering the wall surface 512b. FIG. 11A is a plan view of the state when the vacuum heat insulating material 500 is assembled as seen from above. In FIG. 11A, the outer packaging material 520 is shown as being separated from the core material 510 in order to clearly show the outer packaging material 520, but since the inside of the outer packaging material 520 is decompressed, It is in a state of being in close contact with the core material 510.

  As described above, the core member 510 according to the fifth embodiment has the extending portions 514a to 514d. Therefore, by fixing the surplus portion 526b to the outer packaging material 520 covering the wall surface 512b with the adhesive tape 132, the extended portion 514b and the wall surface 512c of the wall surface 512b are accurately positioned as shown in FIG. The abutting portion 529 can be formed by abutting on the abutting portion. As described above, the extended portion 514b of the wall surface 512b and the wall surface 512c can be brought into close contact with each other by forming the contact portion 529 by bringing the extended portion 514b of the wall surface 512b into contact with the wall surface 512c. Moreover, the heat insulation effect of the vacuum heat insulating material 500 of a box can be improved more.

  Similarly, the other extending portions 514a, 514c, and 514d can be brought into close contact with the wall surface in a planar shape.

  Moreover, you may stick the elastic sealing material 134 between the extension part 514b of the wall surface 512b, and the wall surface 512c like FIG.11 (b). FIG. 11B is also a plan view of the state when the vacuum heat insulating material 500 is assembled as seen from above, as in FIG. Also in FIG. 11B, the outer packaging material 520 is shown as being separated from the core material 510 in order to clearly show the outer packaging material 520. Examples of the elastic sealing material 134 include a foamed plastic sealing material, a silicon rubber sealing material, and a butyl rubber sealing material.

  By assembling in this way, it is possible to make it difficult for a gap to be formed between the two wall surfaces 512b and 512c, and the heat insulation effect can be enhanced.

<< Cutting excess part >>
Further, similarly to the second embodiment, the vacuum heat insulating material 500 may be assembled by cutting the surplus portion. By doing in this way, an assembly operation can be performed without being disturbed by the surplus portion.

<<< Sixth Embodiment and Seventh Embodiment >>>>
FIG. 12 is a front view showing the entire core material 610 according to the sixth embodiment, and FIG. 13 is a front view showing the entire core material 710 according to the seventh embodiment.

<< Core material 610 >>
<Shape and material of core material>
The core material 610 according to the sixth embodiment is made of the same material as that in the first embodiment and has the same function.

  The core material 610 shown in FIG. 12 has a sheet shape and a substantially cross shape, and includes five wall surfaces 612a to 612e. The five wall surfaces 612a to 612e are continuously integrated to form the core material 610. That is, the five wall surfaces 612a to 612e are not separated from each other but are continuous. The core member 610 is preferably formed so that one sheet-like core member has a substantially cross shape. In addition, you may form so that it may become united continuously as a whole by forming separately for every five wall surfaces 612a-612e, and connecting so that these may connect. By using the core material 610 that is continuously integrated in this way, the core material 610 can be easily handled.

  The core material 610 shown in FIG. 12 is used for a vacuum heat insulating material that has a rectangular parallelepiped shape when assembled, and has a shape in which the rectangular parallelepiped is developed. That is, a rectangular parallelepiped can be formed by bending at the broken line shown in FIG. The broken lines shown in FIG. 12 are the boundary line B1 between the wall surface 612a and the wall surface 612b, the boundary line B2 between the wall surface 612a and the wall surface 612c, the boundary line B3 between the wall surface 612a and the wall surface 612d, and the wall surface 612a and the wall surface 612e. A boundary line B4 is shown.

  The rectangular parallelepiped in the sixth embodiment is not composed of six wall surfaces, but is composed of five wall surfaces 612a to 612e. The wall surface 612a of the core material 610 is a bottom surface of the rectangular parallelepiped, and the four wall surfaces 612b to 612e are side surfaces of the rectangular parallelepiped. As will be described later, the assembly is performed by folding the vacuum heat insulating material 600 composed of the core material 610 and the outer packaging material 620, and the core material 610 is formed by being bent alone. There is no.

  The broken lines shown in FIG. 12 are shown in order to clarify the above-described four boundary lines B1 to B4. However, even if a bending groove is formed in advance at each location of the boundary lines B1 to B4. Good. The bending groove can be formed by pressing an elongated pressure member (not shown) against the surface of the core material 610. By forming the bending groove, it can be easily bent at an appropriate position, so that it can be easily assembled into a desired rectangular parallelepiped.

  As shown in FIG. 12, a right triangle extending portion 614b is formed along the wall surface 612b on the side of the wall surface 612b of the core member 610 in the sixth embodiment. Similarly, a right triangle extending portion 614c is formed along the wall surface 612c at the side of the wall surface 612c, and a right triangle extending portion 614d is formed along the wall surface 612d at the side of the wall surface 612d. A right triangle extending portion 614e is formed along the wall surface 612e on the side of the wall surface 612e.

  One of the three sides of the extending portion 614b coincides with the side portion 616b of the wall surface 612b and has the same length as the side portion 616b of the wall surface 612b. Further, another side 615b of the three sides of the extending portion 614b extends from the side 617b outside the wall surface 612b and is aligned with the side 617b. The side 615b has a length shorter than the length of the side 617b. The remaining side 618b of the three sides of the extending portion 614b is a hypotenuse of a right triangle.

  One vertex of the three vertices of the extending portion 614b of the right triangle is located at the intersection 619b between the side portion 616b of the wall surface 612b and the side portion 613c of the wall surface 612c. By doing so, the angle θ formed between the side 618b of the extending portion 614b and the side portion 613c of the wall surface 612c becomes an acute angle. By making the extension part 614b into such a shape, the extension part 614b becomes a right triangle gradually increasing toward the outside.

  An excess portion (not shown) is formed by an outer packaging material 620 described later between the side 618b of the extending portion 614b and the side portion 613c of the wall surface 612c. The vicinity of the intersection 619b between the side portion 616b of the wall surface 612b and the side portion 613c of the wall surface 612c is the vicinity of the apex of the extending portion 614b, and the width of the extending portion 614b is sufficiently thin. For this reason, when assembling, the surplus part can be fully pulled out without being obstructed by the extension part 614b. Moreover, since the surplus part can be pulled out outside, the wall surface 612b and the wall surface 612c can be brought into close contact with each other without being disturbed by the surplus part when assembled.

  In the above description, only the extending portion 614b has been described, but the remaining extending portions 614c, 614d, and 614e are the same.

<< Outer packaging material >>
An outer packaging material 620 (not shown) used in the vacuum heat insulating material 600 in the sixth embodiment has the same materials and functions as those in the first embodiment. The shape and size of the outer packaging material 620 may be appropriately determined according to the shape and size of the core material 610. The outer packaging material 620 is preferably a bag-like shape like the outer packaging materials 120 and 220.

  The outer packaging material 620 is also composed of two sheet-shaped outer packaging materials (not shown), like the outer packaging materials 120 and 220. The two sheet-like outer packaging materials also have the same materials and functions as the two sheet-like outer packaging materials 122a and 122b in the first embodiment. A bag-shaped outer packaging material 620 is formed by the two sheet-shaped outer packaging materials.

<< Getter agent >>
The getter agent (not shown) used in the vacuum heat insulating material 600 (not shown) in the sixth embodiment also has the same shape, size, material, and function as those in the first embodiment. .

  As will be described later, the vacuum heat insulating material 600 is also formed by housing the core material 610 in a bag-like outer packaging material 620 and heat-sealing the opening. For this reason, since the inside of the outer packaging material 620 becomes one space closed by the entire vacuum heat insulating material 600, only one getter agent needs to be disposed in the vacuum heat insulating material 600.

  The getter agent can adsorb gas and moisture existing throughout the vacuum heat insulating material 600 by being located at or near the center of the vacuum heat insulating material 600. Can be demonstrated.

<< Vacuum insulation 600 >>
The core material 610 according to the sixth embodiment is also accommodated in the outer packaging material 620 in the same manner as in the first embodiment and the second embodiment. After housing the core material 610 in the outer packaging material 620, the vacuum heat insulating material 600 can be formed by decompressing the inside. Also in the sixth embodiment, as in the first embodiment and the second embodiment, the vacuum heat insulating material 600 is formed and then folded and assembled. In assembling the vacuum heat insulating material 600, an excessive portion (not shown) is drawn out toward the outside. By doing in this way, the adjacent wall surface can be stuck and the heat insulation effect can be heightened.

<< Assembly of vacuum heat insulating material 600 >>
When assembling the vacuum heat insulating material 600, the extended portion 614b is bent at a substantially right angle with respect to the wall surface 612b and the extended portion 614c is bent at a substantially right angle with respect to the wall surface 612c by bending at the broken line shown in FIG. The extending portion 614d can be bent at a substantially right angle with respect to the wall surface 612d, and the extending portion 614e can be bent at a substantially right angle with respect to the wall surface 612e. By doing so, the extending portion 614b partially overlaps the wall surface 612b, the extending portion 614c partially overlaps the wall surface 612c, the extending portion 614d partially overlaps the wall surface 612d, and extends. The protruding portion 614e can partially overlap the wall surface 612e.

<< Core material 710 >>
<Shape and material of core material>
The core material 710 according to the seventh embodiment is made of the same material as that in the first embodiment and has the same function.

  The core material 710 shown in FIG. 13 also has a sheet shape and a substantially cross shape, and includes five wall surfaces 712a to 712e. The five wall surfaces 712a to 712e are continuously integrated to form a core material 710. That is, the five wall surfaces 712a to 712e are not separated from each other but are continuous. The core member 710 is preferably formed so that one sheet-like core member has a substantially cross shape. In addition, you may form so that it may become united continuously as a whole by forming separately for every five wall surfaces 712a-712e, and connecting so that these may connect. By using the core material 710 that is continuously integrated in this way, the core material 710 can be easily handled.

  The core material 710 shown in FIG. 13 is used for a vacuum heat insulating material that has a rectangular parallelepiped shape when assembled, and has a shape in which the rectangular parallelepiped is developed. That is, a rectangular parallelepiped can be formed by bending at the broken line shown in FIG. The broken lines shown in FIG. 13 are the boundary line B1 between the wall surface 712a and the wall surface 712b, the boundary line B2 between the wall surface 712a and the wall surface 712c, the boundary line B3 between the wall surface 712a and the wall surface 712d, and the wall surface 712a and the wall surface 712e. A boundary line B4 is shown.

  The rectangular parallelepiped in the seventh embodiment is not composed of six wall surfaces, but is composed of five wall surfaces 712a to 712e. The wall surface 712a of the core material 710 is the bottom surface of the rectangular parallelepiped, and the four wall surfaces 712b to 712e are the side surfaces of the rectangular parallelepiped. As will be described later, the assembly is performed by bending the vacuum heat insulating material 700 composed of the core material 710 and the outer packaging material 720, and the core material 710 is formed by being bent alone. There is no.

  The broken lines shown in FIG. 13 are shown in order to clarify the above-described four boundary lines B1 to B4. However, even if a bending groove is formed in advance at each of the boundary lines B1 to B4. Good. The bending groove can be formed by pressing an elongated pressurizing body (not shown) against the surface of the core material 710. By forming the bending groove, it can be easily bent at an appropriate position, so that it can be easily assembled into a desired rectangular parallelepiped.

  As shown in FIG. 13, a substantially rectangular extending portion 714 b is formed along the wall surface 712 b on the side portion of the wall surface 712 b of the core member 710 in the seventh embodiment. Similarly, a substantially rectangular extending portion 714c is formed along the wall surface 712c at the side portion of the wall surface 712c, and a substantially rectangular extending portion 714d is formed along the wall surface 712d at the side portion of the wall surface 712d. A substantially rectangular extending portion 714e is formed along the wall surface 712e on the side of the wall surface 712e.

  The length of the substantially rectangular extending portion 714b in the longitudinal direction is shorter than the length of the side portion 716b of the wall surface 712b, and a notch 717b is formed. The notch 717b is located in the vicinity of the intersection 719b between the side portion 716b of the wall surface 712b and the side portion 713c of the wall surface 712c.

  A surplus portion (not shown) is formed between the extending portion 714b and the wall surface 712c by an outer packaging material 720 described later. As described above, the notch 717b is formed in the vicinity of the intersection 719b between the side portion 716b of the wall surface 712b and the side portion 713c of the wall surface 712c. For this reason, since a surplus part can be pulled out outside via the notch part 717b, when assembling, a surplus part can fully be pulled out without being disturbed by the extension part 714b. Moreover, since the surplus part can be pulled out outside, the wall surface 712b and the wall surface 712c can be brought into close contact with each other without being disturbed by the surplus part when assembled.

  In the above description, only the extending portion 714b has been described, but the remaining extending portions 714c, 714d, and 714e are the same.

<< Outer packaging material >>
An outer packaging material 720 (not shown) used in the vacuum heat insulating material 700 in the seventh embodiment has the same materials and functions as those in the first embodiment. The shape and size of the outer packaging material 720 may be appropriately determined according to the shape and size of the core material 710. The outer packaging material 720 preferably has a bag-like shape like the outer packaging materials 120 and 220.

  The outer packaging material 720 is also composed of two sheet-shaped outer packaging materials (not shown), like the outer packaging materials 120 and 220. The two sheet-like outer packaging materials also have the same materials and functions as the two sheet-like outer packaging materials 122a and 122b in the first embodiment. A bag-shaped outer packaging material 720 is formed by the two sheet-shaped outer packaging materials.

<< Getter agent >>
The getter agent (not shown) used in the vacuum heat insulating material 700 (not shown) in the seventh embodiment also has the same shape, size, material, and function as those in the first embodiment. .

  As will be described later, the vacuum heat insulating material 700 is also formed by housing the core material 710 in a bag-shaped outer packaging material 720 and heat-sealing the opening. For this reason, since the inside of the outer packaging material 720 becomes one space closed by the entire vacuum heat insulating material 700, only one getter agent needs to be disposed in the vacuum heat insulating material 700.

  The getter agent can adsorb gas and moisture existing throughout the vacuum heat insulating material 700 by being positioned at or near the center of the vacuum heat insulating material 700, and the function of the getter agent. Can be demonstrated.

<< Vacuum insulation 700 >>
The core material 710 according to the seventh embodiment is also accommodated in the outer packaging material 720 in the same manner as in the first embodiment and the second embodiment. After housing the core material 710 in the outer packaging material 720, the vacuum heat insulating material 700 can be formed by decompressing the inside. Also in the seventh embodiment, as in the first embodiment and the second embodiment, the vacuum heat insulating material 700 is formed and then folded and assembled. In assembling the vacuum heat insulating material 700, the surplus portion (not shown) is pulled out toward the outside. By doing in this way, the adjacent wall surface can be stuck and the heat insulation effect can be heightened.

<< Assembly of vacuum heat insulating material 700 >>
When assembling the vacuum heat insulating material 700, the extension portion 714b is bent at a substantially right angle with respect to the wall surface 712b and the extension portion 714c is bent at a substantially right angle with respect to the wall surface 712c. The extended portion 714d can be bent at a substantially right angle with respect to the wall surface 712d, and the extended portion 714e can be bent at a substantially right angle with respect to the wall surface 712e. By doing so, the extending portion 714b partially overlaps the wall surface 712b, the extending portion 714c partially overlaps the wall surface 712c, and the extending portion 714d partially overlaps the wall surface 712d and extends. The protruding portion 714e can partially overlap the wall surface 712e.

<< Details of assembly of vacuum heat insulating material 600 or 700 >>
FIG. 14 is an enlarged plan view showing a state of two adjacent wall surfaces when the vacuum heat insulating material 600 or 700 is assembled. FIG. 14 is a drawing corresponding to either the vacuum heat insulating material 600 or 700, but hereinafter, the case of the vacuum heat insulating material 600 will be described as a representative.

  14A and 14B are enlarged plan views showing a state when the vacuum heat insulating material 600 is assembled. 14 (a) and 14 (b), the outer packaging material 620 is shown as being separated from the core material 610 in order to clearly show the outer packaging material 620. The material 620 is in close contact with the core material 610.

  As shown in FIG. 14A, when the wall surface 612b and the wall surface 612c are bent at a right angle with respect to the wall surface 612a, the surplus portion 626b formed between the wall surface 612b and the wall surface 612c becomes the wall surface 612b. It is pulled out toward the outside from between the wall surface 612c. Further, the extending portion 614b of the wall surface 612b is bent at a right angle to the wall surface 612b so as to overlap the wall surface 612c. Next, the excessive portion 626b is bent toward the wall surface 612c, and the bent excessive portion 626b is brought into contact with the outer packaging material 620 covering the wall surface 612c.

  As described above, the core member 610 according to the sixth embodiment has the extending portions 614b to 614e. For this reason, by fixing the surplus part 626b with the adhesive tape 132 to the outer packaging material 620 covering the wall surface 612c, as shown in FIG. 14A, the extending part 614b of the wall surface 612b becomes part of the wall surface 612c. In addition, the abutting portion 629 can be formed by overlapping the wall surface 612b and the wall surface 612c. Thus, the extension part 614b of the wall surface 612b and the wall surface 612c can be brought into close contact with each other in a planar manner by allowing the extension part 614b of the wall surface 612b to partially overlap the wall surface 612c. Further, by bringing the wall surface 612b and the wall surface 612c into contact with each other, the wall surface 612b can be brought into close contact with the wall surface 612c in a planar shape. By using two types of such close mechanisms, the heat insulating effect of the vacuum insulating material 600 of the box can be further enhanced.

  Similarly, the other extending portions 614c, 614d, and 614e can be brought into close contact with each other by two types of close contact mechanisms.

  Further, as shown in FIG. 14B, an elastic sealing material 134 may be attached between the extended portion 614b of the wall surface 612b and the wall surface 612c. Examples of the elastic sealing material 134 include a foamed plastic sealing material, a silicon rubber sealing material, and a butyl rubber sealing material. By assembling in this way, it is possible to make it difficult for a gap to be formed between the two wall surfaces 612b and 612c, and the heat insulation effect can be enhanced.

It is a front view which shows the whole which expand | deployed the core material 110 in 1st Embodiment. It is a perspective view which shows the state which accommodated the core material 110 in the bag-like outer packaging material 120. It is a front view which shows the state which accommodated the core material 110 in the bag-shaped outer packaging material 120, and heat-sealed the opening part 124. FIG. It is a perspective view which shows the process in which the core material 110 is accommodated in the bag-shaped outer packaging material 120, and a box is assembled. It is an enlarged plan view which shows the state of two adjacent wall surfaces. It is a front view which shows the vacuum heat insulating material 200 which consists of the whole which expanded the core material 110 of 2nd Embodiment, and the outer packaging material 220. FIG. It is an enlarged plan view which shows the state of two adjacent wall surfaces. It is a front view which shows the whole which expand | deployed the core material 310 of 3rd Embodiment. It is a front view which shows the whole which expand | deployed the core material 410 of 4th Embodiment. It is a front view which shows the whole which expand | deployed the core material 510 of 5th Embodiment. It is an enlarged plan view which shows the state of two adjacent wall surfaces. It is a front view which shows the whole which expand | deployed the core material 610 of 6th Embodiment. It is a front view which shows the whole which expand | deployed the core material 710 of 7th Embodiment. It is an enlarged plan view which shows the state of two adjacent wall surfaces.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Vacuum heat insulating material 110 Core material 112a, 112b, 112c, 112d, 112e Wall surface 120 Outer packaging material 126a, 126b, 126c, 126d Surplus part 129 Contact part 130 Getter agent 200 Vacuum heat insulating material 226a, 226b, 226c, 226d Surplus part 220 Outer packaging material 300 Vacuum heat insulating material 310 Core material 312a, 312b, 312c, 312d, 312e Wall surface 320 Outer packaging material 400 Vacuum heat insulating material 410 Core material 412a, 412b, 412c, 412d, 412e, 412f Wall surface 420 Outer packaging material 500 Vacuum heat insulating material 510 core Material 512a, 512b, 512c, 512d, 512e Wall surface 520 Outer packaging material 600 Vacuum heat insulating material 610 Core material 612a, 612b, 612c, 612d, 612e Wall surface 620 Outer packaging material 700 Vacuum heat insulating material 710 Core material 712a, 712b, 712c, 712d, 712e wall surface 720 outer packaging material

Claims (8)

A vacuum insulation material having at least a core material, and an outer packaging material capable of accommodating the core material and maintaining the inside in a reduced pressure state, and having a box shape,
The core material has a bent portion that is bent together with the outer packaging material,
The core material before being housed in the outer packaging material has a shape in which the box is developed, and is integrally molded,
The vacuum heat insulating material, wherein the bent portion is formed by bending the core material in a state where the core material is housed in the outer packaging material and decompressed. The outer packaging material is larger than the core material,
The outer packaging material is formed with a surplus portion that does not contact the core material,
The vacuum heat insulating material according to claim 1, wherein sides of adjacent wall surfaces forming the box are brought into close contact with each other by pulling out the surplus portion toward the outside of the box.   The vacuum heat insulating material according to claim 2, wherein the surplus portion drawn toward the outside of the box is attached to the adjacent wall surface.   The vacuum heat insulating material according to claim 1, wherein one getter agent is provided in the interior covered with the outer packaging material.   The vacuum heat insulating material according to claim 1, wherein a groove that defines the bent portion is formed in the core material. The vacuum heat insulating material according to claim 1, wherein at least one of the wall surfaces forming the box is a flat surface.   The vacuum heat insulating material according to claim 2, wherein a seal member is provided between adjacent wall surfaces forming the box.   The vacuum heat insulating material according to claim 2, wherein a part of one of adjacent wall surfaces forming the box is superimposed on the other wall surface.

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