JP2007278388A

JP2007278388A - Vacuum heat insulating material and method of manufacturing vacuum heat insulating material

Info

Publication number: JP2007278388A
Application number: JP2006105073A
Authority: JP
Inventors: Osamu Yumita; 修弓田
Original assignee: Toyota Motor Corp
Current assignee: Toyota Motor Corp
Priority date: 2006-04-06
Filing date: 2006-04-06
Publication date: 2007-10-25

Abstract

<P>PROBLEM TO BE SOLVED: To improve the reliability, heat insulating property and usability of a vacuum heat insulating material. <P>SOLUTION: The vacuum heat insulating material 100 has a laminated structure of laminating and bonding four rectangular sheet-like vacuum heat insulating material forming members 20 formed with a plurality of vacuum heat insulating cells 10 independently, i.e., a first vacuum heat insulating material forming member 20a, a second vacuum heat insulating material forming member 20b, a third vacuum heat insulating material forming member 20c and a fourth vacuum heat insulating material forming member 20d. The plurality of vacuum heat insulating material forming members 20 are laminated so that the vacuum heat insulating cells 10 of the vacuum feat insulating material forming member 20 in a lower layer are arranged between the plurality of adjacent vacuum heat insulating cells 10 of the vacuum heat insulating material forming member 20 in an upper layer when the vacuum heat insulating material 100 is viewed from the laminated direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、真空断熱材、および、真空断熱材の製造方法に関するものである。 The present invention relates to a vacuum heat insulating material and a method for manufacturing a vacuum heat insulating material.

従来、熱伝導を遮断して保温や保冷を行うために真空断熱材が用いられている。この真空断熱材は、例えば、プラスチック層と金属層とを積層させたガスバリア性のラミネートフィルム内に、所定の断熱芯材を真空密封することによって形成されている。そして、真空断熱材について、信頼性を向上させたり、使用性を向上させたりするための種々の技術が提案されている（例えば、下記特許文献１，２参照）。 Conventionally, a vacuum heat insulating material has been used to keep heat conduction and to keep heat and cool. The vacuum heat insulating material is formed, for example, by vacuum-sealing a predetermined heat insulating core material in a gas barrier laminate film in which a plastic layer and a metal layer are laminated. Various techniques for improving the reliability and improving the usability of the vacuum heat insulating material have been proposed (for example, see Patent Documents 1 and 2 below).

下記特許文献１には、真空断熱材の信頼性を向上させるための技術として、ガスバリア性フィルムよりなる偏平状の袋内に断熱芯材が真空排気された状態で封入されてなる断熱層が、厚さ方向に２層以上一体に積層された構造を有する真空断熱パネル（真空断熱材）が記載されている。 In Patent Document 1 below, as a technique for improving the reliability of the vacuum heat insulating material, a heat insulating layer enclosed in a state where the heat insulating core material is evacuated in a flat bag made of a gas barrier film, A vacuum heat insulating panel (vacuum heat insulating material) having a structure in which two or more layers are integrally laminated in the thickness direction is described.

また、下記特許文献２には、真空断熱材を適用する対象物に対する適合性、すなわち、使用性を向上させるための技術が記載されている。この真空断熱材は、複数の芯材をガスバリア性の外被材で覆い外被材の内部を減圧密封して成る。そして、複数の芯材は、隣接する芯材の間に位置する部分で２方向以上の折曲線を形成できるように格子状または千鳥状に互いに所定間隔離して配置されている。また、外被材の間に芯材がある部分を含めて加熱加圧することにより、芯材の周囲に外被材の熱溶着部が設けられており、複数の芯材のそれぞれが独立した空間内に位置されている。 Moreover, the following patent document 2 describes a technique for improving compatibility with an object to which a vacuum heat insulating material is applied, that is, usability. This vacuum heat insulating material is formed by covering a plurality of core materials with a gas barrier outer covering material and sealing the inside of the outer covering member under reduced pressure. The plurality of core members are arranged in a lattice shape or a zigzag manner so as to be spaced apart from each other by a predetermined distance so that folding lines in two or more directions can be formed at a portion located between adjacent core members. In addition, by applying heat and pressure including a portion where the core material exists between the outer cover materials, a thermal welding portion of the outer cover material is provided around the core material, and each of the multiple core materials is an independent space. Is located within.

特開平８−２９１８９２号公報Japanese Patent Laid-Open No. 8-291892 特許第３５５９０３５号明細書Japanese Patent No. 3559035

しかし、上記特許文献１に記載された技術では、種々の形状の真空断熱材を製造することは煩雑であるため、真空断熱材の形状は、通常、固定されている。このため、真空断熱材を適用する対象物の形状について制限があり、使用性が悪かった。また、上記特許文献２に記載された技術では、種々の形状の対象物に対応可能ではあるが、真空断熱材において折曲線が形成される部分に芯材が配置されていないため、断熱性が悪かった。 However, in the technique described in Patent Document 1, it is cumbersome to manufacture various shapes of vacuum heat insulating materials, and thus the shape of the vacuum heat insulating materials is usually fixed. For this reason, the shape of the object to which the vacuum heat insulating material is applied is limited, and the usability is poor. Moreover, in the technique described in the above-mentioned Patent Document 2, it is possible to deal with objects of various shapes, but since the core material is not arranged in the portion where the folding line is formed in the vacuum heat insulating material, the heat insulating property is improved. It was bad.

本発明は、上述の課題を解決するためになされたものであり、真空断熱材の信頼性、および、断熱性を向上させるとともに、使用性を向上させることを目的とする。 This invention is made | formed in order to solve the above-mentioned subject, and it aims at improving the usability while improving the reliability and heat insulation of a vacuum heat insulating material.

上述の課題の少なくとも一部を解決するため、本発明では、以下の構成を採用した。
本発明の真空断熱材は、
真空断熱材形成部材を複数枚積層させて互いに接着して成り、
前記各真空断熱材形成部材は、それぞれ、複数の真空断熱セルが所定間隔で配置されたシート状の部材であり、
前記各真空断熱セルは、それぞれ、ガスバリア性のフィルム内に所定の断熱芯材を真空密封して成り、
上下に積層される２枚の前記真空断熱材形成部材は、積層方向から見たときに、一方の前記真空断熱材形成部材における前記真空断熱セルが、他方の前記真空断熱材形成部材において互いに隣接する複数の前記真空断熱セルの間に位置するように、積層されていることを要旨とする。 In order to solve at least a part of the above-described problems, the present invention employs the following configuration.
The vacuum heat insulating material of the present invention is
A plurality of vacuum heat insulating material forming members are laminated and bonded together,
Each of the vacuum heat insulating material forming members is a sheet-like member in which a plurality of vacuum heat insulating cells are arranged at predetermined intervals,
Each of the vacuum heat insulation cells is formed by vacuum-sealing a predetermined heat insulation core material in a gas barrier film,
When viewed from the stacking direction, the two vacuum heat insulating material forming members stacked one above the other are adjacent to each other in the vacuum heat insulating material forming member. The gist is to be laminated so as to be positioned between the plurality of vacuum heat insulation cells.

本発明では、真空断熱材形成部材において、ガスバリア性のフィルム内に所定の断熱芯材が真空密封された真空断熱セルが、所定間隔で複数配置されているので、複数の真空断熱セルのうちの１つの真空断熱セルにおいて、ガスバリア性のフィルムの破損等によって真空度が低下して断熱性が低下しても、これによって、他の真空断熱セルの真空度、および、断熱性が低下することはない。したがって、真空断熱材の信頼性を向上させることができる。また、上下に配置される２枚の真空断熱材形成部材は、積層方向から見たときに、一方の真空断熱材形成部材における真空断熱セルが、他方の真空断熱材形成部材において互いに隣接する複数の真空断熱セルの間に位置するように積層されているので、積層方向から見たときに、真空断熱セルが配置されていない部分をなくすようにすることができる。したがって、真空断熱材の断熱性を向上させることができる。また、本発明の真空断熱材では、真空断熱材を切断して任意の形状に加工しても、先に説明したように、切断された一部の真空断熱セルが破損するだけで、隣接する他の真空断熱セルの断熱性は損なわれない。したがって、真空断熱材を任意の形状に切断することができ、真空断熱材の使用性を向上させることができる。つまり、本発明によって、真空断熱材の信頼性、および、断熱性を向上させるとともに、使用性を向上させることができる。 In the present invention, in the vacuum heat insulating material forming member, a plurality of vacuum heat insulating cells in which a predetermined heat insulating core material is vacuum-sealed in a gas barrier film are arranged at predetermined intervals. In one vacuum insulation cell, even if the degree of vacuum is lowered due to a gas barrier film breakage or the like, and the heat insulation is reduced, the vacuum degree and heat insulation of other vacuum insulation cells are reduced. Absent. Therefore, the reliability of the vacuum heat insulating material can be improved. The two vacuum heat insulating material forming members arranged above and below are a plurality of the vacuum heat insulating cells in one vacuum heat insulating material forming member adjacent to each other in the other vacuum heat insulating material forming member when viewed from the stacking direction. Therefore, when viewed from the stacking direction, it is possible to eliminate a portion where the vacuum heat insulation cell is not disposed. Therefore, the heat insulating property of the vacuum heat insulating material can be improved. Further, in the vacuum heat insulating material of the present invention, even if the vacuum heat insulating material is cut and processed into an arbitrary shape, as described above, only a part of the cut vacuum heat insulating cells are damaged and adjacent to each other. The heat insulation of other vacuum heat insulation cells is not impaired. Therefore, the vacuum heat insulating material can be cut into an arbitrary shape, and the usability of the vacuum heat insulating material can be improved. That is, according to the present invention, it is possible to improve the reliability and heat insulation of the vacuum heat insulating material and improve the usability.

上記真空断熱材において、真空断熱材形成部材は、複数の真空断熱セルを個別に作製し、これらをシート状の部材に所定間隔で接着することによって形成されるようにしてもよいが、
前記真空断熱材形成部材は、一対の前記フィルムの間に、複数の前記断熱芯材を所定間隔で配置して真空密封するとともに、前記複数の断熱芯材が配置されていない領域において、前記一対のフィルム同士を接着することによって形成されているようにしてもよい。 In the vacuum heat insulating material, the vacuum heat insulating material forming member may be formed by individually preparing a plurality of vacuum heat insulating cells and bonding them to a sheet-like member at a predetermined interval.
The vacuum heat insulating material forming member arranges the plurality of heat insulating core materials at a predetermined interval between a pair of the films and vacuum seals them, and in the region where the plurality of heat insulating core materials are not disposed, It may be formed by adhering the two films together.

こうすることによって、複数の真空断熱セルが配置された真空断熱材形成部材を一体形成することができる。なお、一対のフィルム同士を接着する際には、例えば、それぞれのフィルムを熱溶着するようにしてもよい。 By carrying out like this, the vacuum heat insulating material formation member by which the several vacuum heat insulation cell is arrange | positioned can be formed integrally. In addition, when bonding a pair of films, you may make it heat-seal each film, for example.

上記いずれかの真空断熱材において、
前記真空断熱材形成部材は、前記複数の真空断熱セルの間に、熱伝導率が比較的低い所定の断熱材を備えるようにしてもよい。 In any of the above vacuum insulation materials,
The vacuum heat insulating material forming member may include a predetermined heat insulating material having a relatively low thermal conductivity between the plurality of vacuum heat insulating cells.

こうすることによって、各真空断熱セル間の空隙をなくすようにすることができるので、真空断熱材の強度を向上させることができる。なお、熱伝導率が比較的低い所定の断熱材とは、熱伝導率が０．０６（Ｗ／ｍ・Ｋ）以下の部材であり、例えば、無機繊維系、木質繊維系、発泡プラスチック系の断熱材が挙げられる。 By carrying out like this, since the space | gap between each vacuum heat insulation cell can be eliminated, the intensity | strength of a vacuum heat insulating material can be improved. The predetermined heat insulating material having a relatively low thermal conductivity is a member having a thermal conductivity of 0.06 (W / m · K) or less, such as an inorganic fiber type, a wood fiber type, or a foamed plastic type. Insulating material is mentioned.

上記いずれかの真空断熱材において、
前記真空断熱セルは、正多角形形状を有しているようにしてもよい。 In any of the above vacuum insulation materials,
The vacuum heat insulation cell may have a regular polygonal shape.

こうすることによって、真空断熱材形成部材に、複数の真空断熱セルを整然と配置することができる。 By carrying out like this, a some vacuum heat insulation cell can be arranged orderly in a vacuum heat insulating material formation member.

本発明は、真空断熱材の製造方法の発明として構成することもできる。すなわち、
本発明の真空断熱材の製造方法は、
ガスバリア性のフィルム内に所定の断熱芯材が真空密封された真空断熱セルが、所定間隔で複数配置されたシート状の真空断熱材形成部材を製造する工程と、
前記真空断熱材形成部材を複数枚積層させて互いに接着する積層工程と、を備え
該積層工程は、積層方向から見たときに、上下に配置される２枚の前記真空断熱材形成部材のうち、一方の前記真空断熱材形成部材における前記真空断熱セルが、他方の前記真空断熱材形成部材において互いに隣接する複数の前記真空断熱セルの間に位置するように、前記複数の真空断熱材形成部材を積層する工程を含むことを要旨とする。 This invention can also be comprised as invention of the manufacturing method of a vacuum heat insulating material. That is,
The method for producing the vacuum heat insulating material of the present invention is as follows:
A step of manufacturing a sheet-like vacuum heat insulating material forming member in which a plurality of vacuum heat insulating cells, in which a predetermined heat insulating core material is vacuum-sealed in a gas barrier film, are arranged at predetermined intervals;
A stacking step of laminating a plurality of the vacuum heat insulating material forming members and bonding them together, the stacking step of the two vacuum heat insulating material forming members disposed above and below when viewed from the stacking direction. The plurality of vacuum heat insulating material forming members such that the vacuum heat insulating cells in one of the vacuum heat insulating material forming members are positioned between the plurality of vacuum heat insulating cells adjacent to each other in the other vacuum heat insulating material forming member. The gist is to include a step of laminating.

こうすることによって、先に説明した本発明の真空断熱材を製造することができる。なお、真空断熱材の製造方法の態様においても、先に示した種々の付加的要素を適用することが可能である。 By carrying out like this, the vacuum heat insulating material of this invention demonstrated previously can be manufactured. In addition, also in the aspect of the manufacturing method of a vacuum heat insulating material, it is possible to apply the various additional elements shown previously.

以下、本発明の実施の形態について、実施例に基づき以下の順序で説明する。
Ａ．実施例：
Ｂ．変形例： Hereinafter, embodiments of the present invention will be described in the following order based on examples.
A. Example:
B. Variation:

Ａ．実施例：
図１は、本発明の一実施例としての真空断熱材１００を示す説明図である。図１（ａ）に、真空断熱材１００の平面図を示した。また、図１（ｂ）に、真空断熱材１００を構成する真空断熱材形成部材２０の詳細な断面図を示した。また、図１（ｃ）に、図１（ａ）におけるＡ−Ａ断面図を示した。また、図１（ｄ）に、図１（ａ）におけるＢ−Ｂ断面図を示した。 A. Example:
FIG. 1 is an explanatory view showing a vacuum heat insulating material 100 as one embodiment of the present invention. A plan view of the vacuum heat insulating material 100 is shown in FIG. FIG. 1B shows a detailed cross-sectional view of the vacuum heat insulating material forming member 20 constituting the vacuum heat insulating material 100. FIG. 1C is a cross-sectional view taken along the line AA in FIG. FIG. 1D shows a cross-sectional view taken along line BB in FIG.

図１（ａ）、および、図１（ｃ）、（ｄ）に示したように、真空断熱材１００は、４枚の矩形のシート状の真空断熱材形成部材、すなわち、第１真空断熱材形成部材２０ａと、第２真空断熱材形成部材２０ｂと、第３真空断熱材形成部材２０ｃと、第４真空断熱材形成部材２０ｄとを積層させて接着した積層構造を有している。なお、第１真空断熱材形成部材２０ａと、第２真空断熱材形成部材２０ｂと、第３真空断熱材形成部材２０ｃと、第４真空断熱材形成部材２０ｄとの基本構造は同じであり、これらを総称して真空断熱材形成部材２０とも呼ぶ。 As shown in FIGS. 1A, 1C, and 1D, the vacuum heat insulating material 100 includes four rectangular sheet-like vacuum heat insulating material forming members, that is, a first vacuum heat insulating material. The forming member 20a, the second vacuum heat insulating material forming member 20b, the third vacuum heat insulating material forming member 20c, and the fourth vacuum heat insulating material forming member 20d are stacked and bonded. The basic structures of the first vacuum heat insulating material forming member 20a, the second vacuum heat insulating material forming member 20b, the third vacuum heat insulating material forming member 20c, and the fourth vacuum heat insulating material forming member 20d are the same. Are collectively referred to as a vacuum heat insulating material forming member 20.

真空断熱材形成部材２０は、図１（ｂ）に示したように、複数の断熱芯材１２をガスバリア性の２枚のフィルム１４，１６によって挟み、それぞれ真空密封したものである。そして、真空断熱材形成部材２０は、図示した断熱芯材１２が配置されていない各領域Ｒにおいて、フィルム１４と、フィルム１６とが、熱溶着されている。各断熱芯材１２がガスバリア性のフィルムによって真空密封されたものそれぞれを、以下、真空断熱セル１０と呼ぶ。なお、本実施例では、断熱芯材１２として、発泡ウレタンを用いるものとした。断熱芯材１２として、他の部材を用いるものとしてもよい。また、ガスバリア性のフィルム１４，１６として、耐熱性プラスチック層と金属層とを積層させたラミネートフィルムを用いるものとした。ガスバリア性のフィルム１４，１６として、他の部材を用いるものとしてもよい。 As shown in FIG. 1B, the vacuum heat insulating material forming member 20 is formed by sandwiching a plurality of heat insulating core materials 12 between two gas barrier films 14 and 16, and vacuum-sealing each. And as for the vacuum heat insulating material formation member 20, the film 14 and the film 16 are heat-welded in each area | region R in which the illustrated heat insulation core material 12 is not arrange | positioned. Each of the heat insulating cores 12 that is vacuum sealed with a gas barrier film is hereinafter referred to as a vacuum heat insulating cell 10. In this embodiment, urethane foam is used as the heat insulating core material 12. Other members may be used as the heat insulating core material 12. Further, as the gas barrier films 14 and 16, a laminate film in which a heat-resistant plastic layer and a metal layer are laminated is used. Other members may be used as the gas barrier films 14 and 16.

図１（ａ）に示したように、真空断熱材形成部材２０には、複数の正方形の真空断熱セル１０が、図示したｘ方向、および、ｙ方向に、所定間隔ｄで、それぞれ配置されている。真空断熱材形成部材２０、真空断熱セル１０のサイズ、および、所定間隔ｄは、それぞれ任意に設定可能である。そして、図１（ｃ），（ｄ）に示したように、第２真空断熱材形成部材２０ｂにおける各真空断熱セル１０は、第１真空断熱材形成部材２０ａにおける各真空断熱セル１０から、ｘ方向、および、ｙ方向にそれぞれ１／２ピッチずらして配置されている。また、第３真空断熱材形成部材２０ｃにおける各真空断熱セル１０は、第１真空断熱材形成部材２０ａにおける各真空断熱セル１０から、それぞれｙ方向に１／２ピッチずらして配置されている。また、第４真空断熱材形成部材２０ｄにおける各真空断熱セル１０は、第１真空断熱材形成部材２０ａにおける各真空断熱セル１０から、それぞれｘ方向に１／２ピッチずらして配置されている。このように各真空断熱セル１０を各真空断熱材形成部材２０に配置することによって、真空断熱材１００を積層方向から見たときに、上層の真空断熱材形成部材２０において隣接する複数の真空断熱セル１０の間に、下層の真空断熱材形成部材２０の真空断熱セル１０が配置されるように、各真空断熱材形成部材２０を積層することができる。 As shown in FIG. 1A, the vacuum heat insulating material forming member 20 has a plurality of square vacuum heat insulating cells 10 arranged at predetermined intervals d in the illustrated x direction and y direction, respectively. Yes. The size of the vacuum heat insulating material forming member 20, the vacuum heat insulating cell 10, and the predetermined interval d can be arbitrarily set. And as shown to FIG.1 (c), (d), each vacuum heat insulation cell 10 in the 2nd vacuum heat insulating material formation member 20b is x from each vacuum heat insulation cell 10 in the 1st vacuum heat insulation material formation member 20a. The direction and the y direction are respectively shifted by 1/2 pitch. Moreover, each vacuum heat insulation cell 10 in the 3rd vacuum heat insulating material formation member 20c is each arrange | positioned by 1/2 pitch shifting in the y direction from each vacuum heat insulation cell 10 in the 1st vacuum heat insulation material formation member 20a. Moreover, each vacuum heat insulation cell 10 in the 4th vacuum heat insulating material formation member 20d is each shifted from the vacuum heat insulation cell 10 in the 1st vacuum heat insulation material formation member 20a by 1/2 pitch in the x direction. By arranging each vacuum heat insulating cell 10 in each vacuum heat insulating material forming member 20 in this way, when the vacuum heat insulating material 100 is viewed from the stacking direction, a plurality of vacuum heat insulating materials adjacent to each other in the upper vacuum heat insulating material forming member 20 are provided. Each vacuum heat insulating material forming member 20 can be laminated so that the vacuum heat insulating cells 10 of the lower vacuum heat insulating material forming member 20 are disposed between the cells 10.

以上説明した本実施例の真空断熱材１００によれば、各真空断熱材形成部材２０において、各真空断熱セル１０が独立して形成されているので、複数の真空断熱セル１０のうちの１つの真空断熱セル１０において、ガスバリア性のフィルム１４，１６の破損等によって真空度が低下して断熱性が低下しても、これによって、他の真空断熱セル１０の真空度、および、断熱性が低下することはない。したがって、真空断熱材１００の信頼性を向上させることができる。また、上記積層構造において、複数の真空断熱材形成部材２０は、積層方向から見たときに、上層の真空断熱材形成部材２０において隣接する複数の真空断熱セル１０の間に、下層の真空断熱材形成部材２０の真空断熱セル１０が配置されるように、積層されているので、積層方向から見たときに、真空断熱セル１０が配置されていない部分をなくすようにすることができる。したがって、真空断熱材１００の断熱性を向上させることができる。また、本実施例の真空断熱材１００では、真空断熱材１００を切断して任意の形状に加工しても、切断された一部の真空断熱セル１０が破損するだけで、隣接する他の真空断熱セル１０の断熱性は損なわれない。したがって、真空断熱材１００を任意の形状に切断することができ、真空断熱材１００の使用性を向上させることができる。つまり、本実施例の真空断熱材１００によって、真空断熱材１００の信頼性、および、断熱性を向上させるとともに、使用性を向上させることができる。 According to the vacuum heat insulating material 100 of the present embodiment described above, since each vacuum heat insulating cell 10 is independently formed in each vacuum heat insulating material forming member 20, one of the plurality of vacuum heat insulating cells 10 is formed. In the vacuum heat insulation cell 10, even if the degree of vacuum is lowered due to breakage of the gas barrier films 14 and 16 and the heat insulation is lowered, the vacuum degree and heat insulation of other vacuum heat insulation cells 10 are thereby lowered. Never do. Therefore, the reliability of the vacuum heat insulating material 100 can be improved. Further, in the above laminated structure, the plurality of vacuum heat insulating material forming members 20 have a lower layer vacuum heat insulating material between a plurality of adjacent vacuum heat insulating cells 10 in the upper vacuum heat insulating material forming member 20 when viewed from the stacking direction. Since it is laminated so that the vacuum heat insulation cells 10 of the material forming member 20 are arranged, it is possible to eliminate a portion where the vacuum heat insulation cells 10 are not arranged when viewed from the lamination direction. Therefore, the heat insulating property of the vacuum heat insulating material 100 can be improved. Moreover, in the vacuum heat insulating material 100 of a present Example, even if the vacuum heat insulating material 100 is cut | disconnected and processed into arbitrary shapes, only the part of cut | disconnected vacuum heat insulation cell 10 will be damaged, and other adjacent vacuum The heat insulation property of the heat insulation cell 10 is not impaired. Therefore, the vacuum heat insulating material 100 can be cut into an arbitrary shape, and the usability of the vacuum heat insulating material 100 can be improved. That is, with the vacuum heat insulating material 100 of the present embodiment, the reliability and heat insulating properties of the vacuum heat insulating material 100 can be improved and the usability can be improved.

Ｂ．変形例：
以上、本発明の実施の形態について説明したが、本発明はこのような実施の形態になんら限定されるものではなく、その要旨を逸脱しない範囲内において種々なる態様での実施が可能である。例えば、以下のような変形が可能である。 B. Variation:
Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and can be implemented in various modes without departing from the scope of the present invention. For example, the following modifications are possible.

Ｂ１．変形例１：
図２は、真空断熱材に用いられる変形例としての真空断熱材形成部材２０Ａの断面図である。この真空断熱材形成部材２０Ａは、先に説明した真空断熱材形成部材２０と同様に、複数の断熱芯材１２をガスバリア性の２枚のフィルム１４，１６によって挟み、それぞれ真空密封するとともに、断熱芯材１２が配置されていない領域Ｒにおいて、フィルム１４と、フィルム１６とを熱溶着し、さらに、各真空断熱セル１０間に断熱材２２を配置したものである。本実施例では、断熱材２２として、発泡ウレタンを用いるものとした。断熱材２２として、熱伝導率が比較的低い（熱伝導率が０．０６（Ｗ／ｍ・Ｋ）以下）他の部材を用いるものとしてもよい。この真空断熱材形成部材２０Ａを上記実施例と同様に積層させて接着することによっても、真空断熱材の信頼性、および、断熱性を向上させるとともに、使用性を向上させることができる。さらに、真空断熱材形成部材２０Ａでは、各真空断熱セル１０間の空隙をなくすことができるので、真空断熱材の強度を向上させることができる。 B1. Modification 1:
FIG. 2 is a cross-sectional view of a vacuum heat insulating material forming member 20A as a modification used for the vacuum heat insulating material. This vacuum heat insulating material forming member 20A, like the vacuum heat insulating material forming member 20 described above, sandwiches a plurality of heat insulating core materials 12 between two gas barrier films 14 and 16, and each of them is vacuum-sealed. In the region R where the core material 12 is not disposed, the film 14 and the film 16 are thermally welded, and further, the heat insulating material 22 is disposed between the vacuum heat insulating cells 10. In this embodiment, urethane foam is used as the heat insulating material 22. As the heat insulating material 22, another member having a relatively low thermal conductivity (a thermal conductivity of 0.06 (W / m · K) or less) may be used. By laminating and adhering the vacuum heat insulating material forming member 20A in the same manner as in the above embodiment, the reliability and heat insulating property of the vacuum heat insulating material can be improved and the usability can be improved. Furthermore, in the vacuum heat insulating material forming member 20A, since the gap between the vacuum heat insulating cells 10 can be eliminated, the strength of the vacuum heat insulating material can be improved.

Ｂ２．変形例２：
上記実施例では、真空断熱材形成部材２０は、複数の断熱芯材１２をガスバリア性の２枚のフィルム１４，１６によって挟み、それぞれ真空密封することによって形成するものとしたが、これに限られない。 B2. Modification 2:
In the above-described embodiment, the vacuum heat insulating material forming member 20 is formed by sandwiching a plurality of heat insulating core materials 12 between two gas barrier films 14 and 16 and vacuum-sealing each, but is not limited thereto. Absent.

図３は、真空断熱材に用いられる変形例としての真空断熱材形成部材２０Ｂの断面図である。この真空断熱材形成部材２０Ｂは、断熱芯材１２をガスバリア性のフィルム１７内に真空密封した真空断熱セル１０Ｂを複数用意し、これらをシート部材１８上に所定間隔で配置して接着することによって形成されている。この真空断熱材形成部材２０Ｂを上記実施例と同様に積層させて接着することによっても、真空断熱材の信頼性、および、断熱性を向上させるとともに、使用性を向上させることができる。ただし、上記実施例の真空断熱材形成部材２０によれば、複数の真空断熱セル１０が配置された真空断熱材形成部材２０を一体形成することができる。 FIG. 3 is a cross-sectional view of a vacuum heat insulating material forming member 20B as a modification used for the vacuum heat insulating material. The vacuum heat insulating material forming member 20B is prepared by preparing a plurality of vacuum heat insulating cells 10B in which the heat insulating core material 12 is vacuum-sealed in a gas barrier film 17, and arranging and attaching them on the sheet member 18 at predetermined intervals. Is formed. By laminating and adhering the vacuum heat insulating material forming member 20B in the same manner as in the above embodiment, the reliability and heat insulating property of the vacuum heat insulating material can be improved and the usability can be improved. However, according to the vacuum heat insulating material forming member 20 of the said Example, the vacuum heat insulating material forming member 20 in which the several vacuum heat insulating cell 10 is arrange | positioned can be integrally formed.

Ｂ３．変形例３：
上記実施例では、４枚の真空断熱材形成部材２０を積層させて真空断熱材１００を形成するものとしたが、これに限られない。一般に、複数の真空断熱材形成部材２０を積層するようにすればよい。 B3. Modification 3:
In the said Example, although the four vacuum heat insulating material formation members 20 were laminated | stacked and the vacuum heat insulating material 100 was formed, it is not restricted to this. In general, a plurality of vacuum heat insulating material forming members 20 may be stacked.

Ｂ４．変形例４：
上記実施例では、真空断熱セル１０の形状は、正方形であるものとしたが、これに限られない。ただし、真空断熱セル１０の形状を正多角形とすれば、真空断熱材形成部材２０に真空断熱セル１０を整然と配列することができる。 B4. Modification 4:
In the said Example, although the shape of the vacuum heat insulation cell 10 shall be a square, it is not restricted to this. However, if the shape of the vacuum heat insulating cell 10 is a regular polygon, the vacuum heat insulating cells 10 can be arranged in an orderly manner on the vacuum heat insulating material forming member 20.

本発明の一実施例としての真空断熱材１００を示す説明図である。It is explanatory drawing which shows the vacuum heat insulating material 100 as one Example of this invention. 真空断熱材に用いられる変形例としての真空断熱材形成部材２０Ａの断面図である。It is sectional drawing of 20 A of vacuum heat insulating material formation members as a modification used for a vacuum heat insulating material. 真空断熱材に用いられる変形例としての真空断熱材形成部材２０Ｂの断面図である。It is sectional drawing of the vacuum heat insulating material formation member 20B as a modification used for a vacuum heat insulating material.

Explanation of symbols

１００…真空断熱材
１０，１０Ｂ…真空断熱セル
１２…断熱芯材
１４，１６，１７…ガスバリア性のフィルム
１８…シート部材
２０，２０Ａ，２０Ｂ…真空断熱材形成部材
２０ａ…第１真空断熱材形成部材
２０ｂ…第２真空断熱材形成部材
２０ｃ…第３真空断熱材形成部材
２０ｄ…第４真空断熱材形成部材
２２…断熱材 DESCRIPTION OF SYMBOLS 100 ... Vacuum heat insulating material 10, 10B ... Vacuum heat insulating cell 12 ... Heat insulating core material 14, 16, 17 ... Gas barrier film 18 ... Sheet member 20, 20A, 20B ... Vacuum heat insulating material forming member 20a ... 1st vacuum heat insulating material formation Member 20b ... second vacuum heat insulating material forming member 20c ... third vacuum heat insulating material forming member 20d ... fourth vacuum heat insulating material forming member 22 ... heat insulating material

Claims

Vacuum insulation,
A plurality of vacuum heat insulating material forming members are laminated and bonded together,
Each of the vacuum heat insulating material forming members is a sheet-like member in which a plurality of vacuum heat insulating cells are arranged at predetermined intervals,
Each of the vacuum heat insulation cells is formed by vacuum-sealing a predetermined heat insulation core material in a gas barrier film,
When viewed from the stacking direction, the two vacuum heat insulating material forming members stacked one above the other are adjacent to each other in the vacuum heat insulating material forming member. Are stacked so as to be positioned between the plurality of vacuum insulation cells
Vacuum insulation.

The vacuum heat insulating material according to claim 1,
The vacuum heat insulating material forming member arranges the plurality of heat insulating core materials at a predetermined interval between a pair of the films and vacuum seals them, and in the region where the plurality of heat insulating core materials are not disposed, Formed by adhering films together,
Vacuum insulation.

The vacuum heat insulating material according to claim 1 or 2,
The vacuum heat insulating material forming member includes a predetermined heat insulating material having a relatively low thermal conductivity between the plurality of vacuum heat insulating cells.
Vacuum insulation.

The vacuum heat insulating material according to any one of claims 1 to 3,
The vacuum insulation cell has a regular polygonal shape,
Vacuum insulation.

A method of manufacturing a vacuum insulation material,
A step of manufacturing a sheet-like vacuum heat insulating material forming member in which a plurality of vacuum heat insulating cells, in which a predetermined heat insulating core material is vacuum-sealed in a gas barrier film, are arranged at predetermined intervals;
A lamination step of laminating a plurality of the vacuum heat insulating material forming members and bonding them together,
The laminating step is, when viewed from the laminating direction, of the two vacuum heat insulating material forming members stacked vertically, the vacuum heat insulating cell in one of the vacuum heat insulating material forming members is the other vacuum heat insulating material. Laminating the plurality of vacuum heat insulating material forming members so as to be positioned between the plurality of vacuum heat insulating cells adjacent to each other in the material forming member,
Production method.