WO2019235448A1

WO2019235448A1 - Vacuum heat-insulating material and heat-insulating box body using same

Info

Publication number: WO2019235448A1
Application number: PCT/JP2019/022062
Authority: WO
Inventors: 優大鍵本; 法幸宮地; 裕一秦; 貴裕山内
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2018-06-07
Filing date: 2019-06-04
Publication date: 2019-12-12
Also published as: JP7108945B2; CN112219056A; JPWO2019235448A1

Abstract

A vacuum heat-insulating material provided with an outer covering material having a gas barrier property, and a core material (22) vacuum-sealed in the outer covering material. The core material (22) comprises a first left-over material and a second left-over material which are disposed side by side in one direction. An engaging portion (9) is provided on an abutment surface (8) of the first left-over material (7). A portion to be engaged (10) is provided on the abutment surface (8) of the second left-over material (7). The engaging portion (9) and the portion to be engaged (10) are engaged with each other, and the first left-over material and the second left-over material (7) are connected.

Description

Vacuum heat insulating material and heat insulating box using the same

The present disclosure relates to a vacuum heat insulating material and a heat insulating box using the same.

Generally, a vacuum heat insulating material is configured by sealing a core material such as glass wool under reduced pressure in a gas barrier outer covering material. The vacuum heat insulating material is used as a heat insulating box such as a refrigerator and a vending machine, a heat insulating panel such as a house wall, and the like, and greatly contributes to improvement of energy saving.

The core material of the vacuum heat insulating material can be obtained by cutting a sheet-like material such as glass wool into a desired size. The cut core material is inserted into the jacket material together with the adsorbent and sealed under reduced pressure. Thereby, a vacuum heat insulating material is comprised. At this time, an end material other than the portion that becomes the core material is generated from the sheet-like material. Since this scrap is discarded, the cost increases accordingly. Thus, it has been proposed to reuse the end material as a core material (see, for example, Patent Document 1).

16A to 16D are diagrams showing the vacuum heat insulating material described in Patent Document 1. FIG.

As shown in FIG. 16A, the vacuum heat insulating material 100 is configured by inserting a core material 102 such as glass wool together with an adsorbent 103 into a gas barrier outer covering material 101 and sealing it under reduced pressure.

The core material 102 is obtained by cutting a sheet-like material 104 such as glass wool into a desired size as shown in FIG. 16B. The end material 105 of the core material 102 is peeled into two in the thickness direction.

The end materials 105 are arranged in the horizontal direction as shown in FIG. 16C to form an aggregate 105a and sandwiched between new core materials 106. Thereby, the core material 102 shown in FIG. 16D is completed.

This makes it possible to effectively use the end material 105 without wasting it.

JP 2005-345025 A

This disclosure provides a vacuum heat insulating material using an end material core material that is low in production cost, has a large cost reduction rate, is low in cost, and has high dimensional accuracy and rigidity.

The vacuum heat insulating material of the present disclosure includes a jacket material having a gas barrier property and a core material vacuum-sealed in the jacket material. The core material is configured by arranging a first end material and a second end material in parallel in one direction, and an engaging portion is provided on a butting surface of the first end material. An engaged portion is provided on the abutting surface of the second end member. This is a vacuum heat insulating material in which the engaging portion and the engaged portion are engaged and a plurality of end members are connected.

∙ Thereby, the plurality of end materials arranged in the horizontal direction are integrated into a sheet shape. Accordingly, the core material can be easily inserted into the jacket material, and it is not necessary to be sandwiched between the new core materials to form a sheet, and the core material can be configured with only the end material. The individual end members constituting the core member are not displaced due to the engagement between the engaging portion provided on the abutting surface and the engaged portion. Due to the engagement between the engaging portion and the engaged portion, the abutting surface of the end material becomes a shape in which the engaging portion and the engaged portion are mixed into an uneven shape, and the rigidity of the abutting surface portion of the end material is increased. Can be secured.

According to the present disclosure, it is possible to configure a core material with high dimensional accuracy using only the end material, and to provide a vacuum heat insulating material that is low in production cost, has a large cost reduction rate, is low in cost, and has high dimensional accuracy and rigidity. be able to.

FIG. 1 is a cross-sectional view of a vacuum heat insulating material according to the first embodiment of the present disclosure. FIG. 2 is a perspective view showing a cutting state of a sheet-like material that becomes a core material of the vacuum heat insulating material. FIG. 3 is an exploded perspective view showing an end material core material of the vacuum heat insulating material. FIG. 4 is a perspective view showing an end material core material of the vacuum heat insulating material. FIG. 5 is an exploded perspective view showing the core material using the end material in the second embodiment of the present disclosure. FIG. 6 is a perspective view of the concentric material. FIG. 7 is an exploded perspective view showing a core material using an end material in the third embodiment of the present disclosure. FIG. 8 is a perspective view of a core material of the vacuum heat insulating material. FIG. 9 is an exploded perspective view showing a core material using an end material in the fourth embodiment of the present disclosure. FIG. 10 is a perspective view of the core material of the vacuum heat insulating material. FIG. 11 is an exploded perspective view showing a core material using the end material in the fifth embodiment of the present disclosure. FIG. 12 is a perspective view of a core material of the vacuum heat insulating material. FIG. 13 is an exploded perspective view showing a core material using an end material in the sixth embodiment of the present disclosure. FIG. 14 is a perspective view of a core material of the vacuum heat insulating material. FIG. 15 is a perspective view of a heat insulating box according to the seventh embodiment of the present disclosure. 16A is a cross-sectional view of the vacuum heat insulating material described in Patent Document 1. FIG. FIG. 16B is a perspective view illustrating a configuration of an end material core material in the vacuum heat insulating material described in Patent Document 1. FIG. 16C is a perspective view illustrating a configuration of an end material core material in the vacuum heat insulating material described in Patent Document 1. FIG. 16D is a perspective view illustrating a configuration of an end material core material in the vacuum heat insulating material described in Patent Document 1.

(Knowledge that forms the basis of this disclosure)
According to the conventional vacuum heat insulating material 100 described above, it is necessary to form the core material 102 by sandwiching the aggregate 105a in which the end materials 105 are arranged (hereinafter referred to as an end material aggregate) between the new core materials 106. . At this time, an operation such as peeling the end material 105 into two parts or arranging the end materials 105 between the new core materials 106 and sandwiching them as the end material aggregate 105a is required. Therefore, workability is bad, and there is a problem that the production cost increases accordingly.

Further, the end material aggregate 105a cannot function as a core material only by the end material 105. Therefore, it must be sandwiched between the new core material 106. That is, a new core material 106 is required separately in order for the end material 105 to function as a core material. Therefore, the cost reduction rate due to the use of mill ends cannot be increased so much.

Further, in order to increase the cost reduction rate, if the core material is constituted only by the end material aggregate 105 a without using the new core material 106, the plurality of end materials 105 are individually inserted into the jacket material 101. There is a need. In this case, the workability is further deteriorated, the individual end members 105 arranged in the lateral direction are displaced in the longitudinal direction, the dimensional accuracy is deteriorated, and the rigidity at the butt surface portion between the end members 105 is increased. It will decline.

As described above, the conventional core material using the end material, in other words, the vacuum heat insulating material using the end material has a high production cost, a low cost reduction rate, and a low dimensional accuracy and rigidity. There is a problem of becoming.

The inventors came to perform the present disclosure in view of these findings.

(An example of an embodiment of the present disclosure)
1st aspect of this indication is a vacuum heat insulating material provided with the jacket material which has gas-barrier property, and the core material vacuum-sealed in the jacket material. The core material is configured by arranging a first end material and a second end material in parallel in one direction. An engaging portion is provided on the abutting surface of the first end member. An engaged portion is provided on the abutting surface of the second end member. The engaging portion and the engaged portion are engaged, and the first end member and the second end member are connected.

Thereby, a plurality of end materials arranged in parallel in one direction, for example, in the horizontal direction are integrated into a sheet shape and can be easily inserted into the jacket material. There is no need to sandwich a new core material in order to form a sheet, and the core material can be composed of only end materials. And each end material which comprises a core material engages with the engaging part provided in the abutting surface of the 1st end material, and the to-be-engaged part provided in the abutting surface of the 2nd end material. Therefore, the position is not displaced. In addition, due to the engagement between the engaging portion and the engaged portion, the end face abutting surface becomes a shape in which the engaging portion and the engaged portion enter an uneven shape, and the rigidity of the end face butting surface portion is mixed. Can be secured.

Here, the first end material indicates an arbitrary end material among the plurality of end materials, and the second end material is different from the first end material among the plurality of end materials, The end material facing the end surface of one end material.

Here, the engagement portion is a direction parallel to the heat insulating surface and suppresses movement in the insertion direction between the plurality of end materials when the core material is inserted into the jacket material. .

More specifically, the engaging portion has a shape corresponding to the engaged portion, and the shape thereof may be formed not only by a linear shape but also by a curved shape. A configuration in which a linear shape and a curved shape are mixed may be used.

In another aspect of the present disclosure, the engaging portion and the engaged portion may further have a hook shape that prevents disengagement from each other.

This makes it possible to prevent the engagement between the engaging portion and the engaged portion from being inadvertently released and the plurality of end materials from being separated. Therefore, facilitation of the work of inserting the core material into the jacket material can be ensured. Moreover, the clearance gap between an engaging part and a to-be-engaged part can be reduced, and the fall of the heat insulation performance resulting from the clearance gap between core materials can be suppressed.

The other aspect of the present disclosure may be configured such that a cut is provided in at least one of the engaging portion and the engaged portion.

This will allow the engaging portion to move freely to some extent during engagement. Therefore, even if the sizes of the engaging portion and the engaged portion are slightly different, the shape can be changed and engaged by the notch provided in at least one of the engaging portion and the engaged portion. . Therefore, poor engagement between the engaging portion and the engaged portion can be prevented, the yield can be increased, and the cost can be reduced.

In addition, for example, if the engaging portion is formed slightly larger than the engaged portion in advance, the engagement state between the engaging portion and the engaged portion may be tight and strong. it can. Therefore, the rigidity of the abutting surface portion of the plurality of end materials can be made stronger. Moreover, the clearance gap of a core material can be reduced and the fall of the heat insulation performance resulting from the clearance gap between core materials can be suppressed.

Note that the incision is a cutting line for dividing the end material perpendicular to the heat insulating surface.

Another aspect of the present disclosure may be configured such that a compression process in the thickness direction is performed on a part or the whole of the abutting surface portion of each of the first end material and the second end material.

Thereby, the rigidity of the abutting surface portion of the end material can be made stronger, and the compressed portion can be used as, for example, a recess for installing the refrigerant pipe. Moreover, the unevenness | corrugation (step) of the direction parallel to a heat insulation surface which arises in a butt | matching part can be reduced, and an external appearance quality can be improved.

Here, the compression process is a process in which, for example, pressing is performed in a direction perpendicular to the heat insulating surface after sealing the core material under reduced pressure.

Here, the press processing is, for example, “mechanical press processing” in which a metal mold is pressed and compressed using air pressure or hydraulic pressure, and a cylindrical metal mold is used for transfer. This includes “roll press processing” and the like for performing compression processing.

Another aspect of the present disclosure is a heat insulating box including the above-described vacuum heat insulating material.

According to this, an inexpensive and high-quality heat insulating box can be realized by taking advantage of the above-described vacuum heat insulating material.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited by these embodiments. Moreover, in each figure, about the same component, the same code | symbol is used, respectively, and description is abbreviate | omitted.

(First embodiment)
FIG. 1 is a cross-sectional view of a vacuum heat insulating material 1 according to the first embodiment of the present disclosure. The vacuum heat insulating material 1 according to the present embodiment includes a core material 2, a jacket material 3, and an adsorbent 4. The core material 2 and the adsorbent 4 are sealed inside the outer cover material 3 in a reduced-pressure sealed state (substantially vacuum state).

The jacket material 3 is a bag-shaped member having gas barrier properties. In the present embodiment, the jacket material 3 is configured in a bag shape by facing the two laminated sheets 3 a and sealing the periphery with the sealing portion 5.

Further, the sealing part 5 is configured such that the core material 2 does not exist inside and the laminated sheets 3a are in contact with each other. The sealing part 5 is configured in a fin shape extending from the main body of the vacuum heat insulating material 1 toward the outer periphery.

The core material 2 is a fibrous member, and is configured by cutting the sheet-like material 6 into a predetermined dimension as shown in FIG. Moreover, in this Embodiment, the edge material using the edge material 7 which arises at the time of cutting as a core material separately from the new core material 21 formed by cutting directly from the sheet-like material 6 at the time of cutting. An end material core material 22 (see FIG. 4, hereinafter, simply referred to as an end material core material) is formed. At this time, the core material 2 may include only the end material core material 22, or may have a new core material 21 and the end material core material 22 in order to increase the size. In this case, the new core material 21 and the end material core material 22 are engaged with each other by the engaging portion and the engaged portion.

In the example described later, an example in which two end material core members 22 are used will be described. However, the present disclosure is not limited to this, and a configuration in which three or more end member core members 22 are engaged with each other. May be.

The sheet-like material 6 is formed, for example, by firing glass fibers produced by a centrifugal method having an average fiber diameter of 3 μm and compressing them in the range of a bulk density of 120 kg / m 3 to 200 kg / m 3. As shown in FIG. 3, the end material 7 cut out by cutting the sheet-like material 6 includes a plurality of, in this example, two end materials 7 (one is a first end material and the other is a second end material. The sheet-like end material core material 22 is configured in parallel with each other in a lateral direction.

That is, the

end materials

7 and 7 cut out from the sheet-like material 6 are fitted to the butting surfaces 8 and 8 with a projecting portion 9 serving as an engaging portion and a recessed portion 10 serving as an engaged portion. The part 11 is integrally formed. As an example, the first end member is provided with an engaging portion, and the second end member is provided with an engaged portion. Then, by fitting the convex portion 9 and the concave portion 10, the

end materials

7 and 7 are engaged to form a sheet shape, and the end material core material 22 is formed.

As described above, the end material core material 22 formed in a sheet shape is inserted into the outer cover material 3 together with the adsorbent 4 and sealed under reduced pressure. Thereby, the vacuum heat insulating material 1 is comprised.

In addition, the notch 12 in FIG. 3 is an incision provided in the corner portion 17 of the recess 10 that is one side of the fitting structure portion 11. Two cuts 12 are provided in each corner portion 17. These cuts 12 are formed on the extended lines of the sides forming the recess 10. However, the present disclosure is not limited to this, and the cuts 12 may be formed obliquely with respect to each side from the apex of the corner portion 17 as indicated by a broken line.

Further, in the present specification, an example in which the plurality of

end materials

7 and 7 are two is shown, but more end materials may be connected to form the end material core material 22.

Next, the operation and effect of the end material core material 22 configured as described above will be described below.

The end material core material 22 of the vacuum heat insulating material 1 includes a plurality of

end materials

7, 7 cut out from the sheet-like material 6, arranged in parallel in the horizontal direction, and provided on the butt surfaces 8, 8. 9 and the recess 10 are fitted together. By this fitting, the plurality of end members 7 are integrated into a sheet shape.

Thereby, it is not necessary to sandwich the plurality of

end members

7, 7 arranged side by side with the new core material, and the end material core material 22 can be configured using the

end materials

7, 7. That is, it is not necessary to use a new core material, and the cost reduction rate by using the end material can be increased.

Further, the end material core material 22 is integrated in a sheet shape, and is displaced by fitting between the convex portion 9 and the concave portion 10 of the fitting structure portion 11 (in the direction of arrow a in FIG. 4 (plan view)). No misalignment) occurs in the extending direction) of the butting surface 8 at. Therefore, insertion in the direction indicated by the white arrow b (one direction among the directions indicated by the arrow a in FIG. 4) into the jacket material 3 is facilitated. Therefore, the production cost which increases when the end material core material 22 is formed only by the

end materials

7 and 7 can be significantly reduced.

In addition, since the fitting structure portion 11 is not displaced due to the fitting between the convex portion 9 and the concave portion 10, the appearance dimension of concern is concerned when the end material core material 22 is formed only by the

end materials

7 and 7. The accuracy can be increased.

Furthermore, in the end material core material 22, the projecting portion 9 and the recessed portion 10 are fitted in an uneven shape on the abutting

surfaces

8, 8 of the

end materials

7, 7. Therefore, the rigidity of the butt portion can be increased. If the butted surfaces of the

end members

7 and 7 are only in a straight line state, the

end members

7 and 7 are easily bent with respect to an external force in the direction of the arrow c in FIG. 4 (the thickness direction of the end member 7). According to this, since the convex portion 9 and the concave portion 10 are mixed, the rigidity against the external force in the direction of the arrow c is increased.

Also, the rigidity of the butted

surfaces

8 and 8 between the

end members

7 and 7 becomes higher by applying a concave compression process d as shown by a broken line in FIG. This concave compression process d is a flat surface of the

end members

7 and 7 on the fitting structure portion 11 in which the convex portion 9 and the concave portion 10 are fitted, that is, the abutting

surfaces

8 and 8 of the

end members

7 and 7. What is necessary is just to form the

end materials

7 and 7 so that a part may be dented, ie, pressurizing the butting surfaces 8 and 8 in the substantially perpendicular direction. Thereby, the reliability as the vacuum heat insulating material 1 can be further improved. Moreover, the unevenness | corrugation (step) parallel to the heat insulation surface of the butt surfaces 8 and 8 can be prevented. And the recessed part produced by compression processing d can also be utilized as a recessed part for installation of a refrigerant pipe, etc., and is effective.

Note that the compression processing d may be provided not in the whole area of the butted

surfaces

8 and 8 between the

end materials

7 and 7 but in a part.

As described above, even if the end material core material 22 is composed only of the

end materials

7 and 7, a core material having substantially the same quality as the new core material 21 can be realized, and the use of the end material A significant cost reduction can be realized.

Further, in the present embodiment, the notch 12 is provided in the corner portion of the concave portion 10 of the fitting structure portion 11. Thereby, even if the shape of the convex part 9 is somewhat larger than the concave part 10, the concave part 10 is expanded by the notch 12, and the convex part 9 can be fitted into the concave part 10. Therefore, even if there is a slight dimensional error between the shape of the convex portion 9 and the shape of the concave portion 10, it can be used as a core material, and poor fitting between the convex portion 9 and the concave portion 10 can be prevented. That is, the yield can be increased and the cost can be reduced. In addition, the convex portion 9 can be formed slightly larger than the concave portion 10 in advance, and the fitting state between the convex portion 9 and the concave portion 10 can be close and strong. Thereby, the rigidity of the butting surfaces 8 and 8 part of the

end materials

7 and 7 can be made stronger.

In addition, it is preferable that the length dimension of the notch 12 in plan view is at least 1/10 or more of the length of each side forming the recess 10 (the side where the notch 12 is extended). If it is less than 1/10, the expansion of the concave portion 10 is insufficient, and the convex portion 9 may be poorly fitted. Moreover, it is preferable that the length dimension of the notch 12 is 1/6 or less of the long side dimension of the

end materials

7 and 7. When it is larger than 1/6, workability deteriorates.

In addition, in this Embodiment, although the cut 12 showed the example provided in both the convex part 9 and the recessed part 10, it should just be provided in at least one.

(Second Embodiment)
FIG. 5 is an exploded perspective view showing an end material core material 22 using the end material 7 in the second embodiment, and FIG. 6 is a perspective view of the same core material.

In the present embodiment, the hook-shaped portion 13 is provided on the convex portion 9 and the concave portion 10 of the fitting structure portion 11 to prevent detachment in the direction of the arrow e (direction in which the

end materials

7 and 7 are separated from each other). Has been. Here, the shape of the hook is such that when the

end members

7 and 7 are subjected to a force in a direction away from each other, a force that resists the force and does not separate the

end members

7 and 7 is generated. That means.

With such a configuration, the end material core material 22 of the present embodiment can also prevent misalignment of the

end materials

7 and 7 in the direction of the arrow e, and can further improve the dimensional accuracy.

Moreover, although the hook-shaped part 13 mentioned above may be substantially L-shaped, for example, it makes it the shape which has the taper 14 in the direction which the fitting of the convex part 9 and the recessed part 10 bites into as shown in the figure. Is preferred. With such a configuration, when the convex portion 9 and the concave portion 10 are fitted, the

butted surfaces

8 and 8 of the

end members

7 and 7 are pressed against each other by the component force generated by the taper 14. Therefore, it is possible to prevent a gap from being generated between the butting

surfaces

8 and 8. Thereby, it can prevent that the heat insulation of the said part falls by producing a clearance gap between the butting

surfaces

8 and 8 of the

end materials

7 and 7, and is effective.

In this embodiment, the same notch 12 as that in the first embodiment is provided. Thereby, fitting with the convex part 9 and the recessed part 10 can be made more reliable.

(Third embodiment)
FIG. 7 is an exploded perspective view showing a core material using the end material 7 in the third embodiment of the present disclosure, and FIG. 8 is a perspective view of the same core material.

In the present embodiment, the hook-shaped portion 13 of the fitting structure portion 11 described in the second embodiment is provided on both sides of the convex portion 9 and the concave portion 10 (both sides in the direction a in plan view). It is.

Thereby, the effect of press-contacting the butting surfaces 8 and 8 of the

end members

7 and 7 can be enhanced by the component force of the taper 14, and the effect of preventing a decrease in the heat insulating property of the butting surfaces 8 and 8 of the

end members

7 and 7 Can be further improved.

(Fourth embodiment)
FIG. 9 is an exploded perspective view showing a core material using the end material 7 in the fourth embodiment of the present disclosure, and FIG. 10 is a perspective view of the same core material.

In the present embodiment, the convex portion 9 and the concave portion 10 which are the fitting structure portion 11 are provided at a plurality of locations instead of one location of the butting surfaces 8 and 8.

According to the configuration of the present embodiment, the mixed area (contact area) between the convex portion 9 and the concave portion 10 on the butting surfaces 8 and 8 of the

end members

7 and 7 is increased, and the rigidity of the butting portion is higher. Can be.

The number of the convex portions 9 and the concave portions 10 is not particularly limited, but may be one or two. In one case, it is most preferable to provide the convex portions 9 and the concave portions 10 of the

end members

7 and 7 at a substantially central portion of the side in a plan view from the viewpoint of improving rigidity. In the two cases, it is preferable from the viewpoint of improving the rigidity that the convex portions 9 and the concave portions 10 of the

end members

7 and 7 are provided at equal intervals in the longitudinal direction of the side in a plan view.

(Fifth embodiment)
FIG. 11 is an exploded perspective view showing a core material using the end material in the fifth embodiment of the present disclosure, and FIG. 12 is a perspective view of the same core material.

In the present embodiment, a step 15 is provided in the thickness direction of the

end members

7 and 7, and the convex portion 9 and the concave portion 10 that form the fitting structure portion 11 are formed in the step 15 portion. That is, in this example, each of the concave portion 10 and the convex portion 9 has a step in the thickness direction that is fitted to each other.

According to this configuration, the end material core material 22 has the arrow c (thickness) of the butted

surfaces

8 and 8 due to the overlap between the step portions 15 in addition to the fitting of the convex portions 9 and the concave portions 10 of the

end materials

7 and 7. (Direction) can be further increased in rigidity. Therefore, the reliability with respect to rigidity can be further improved.

(Sixth embodiment)
FIG. 13 is an exploded perspective view showing a core material using an end material in the sixth embodiment of the present disclosure, and FIG. 14 is a perspective view of the same core material.

In the present embodiment, the convex portion 9 and the concave portion 10 which are the fitting structure portion 11 are configured by straight lines and curves. More specifically, in the plan view, the convex portion 9 is formed in a substantially circular shape connected to the end material 7 by a linear portion having a certain width. The concave portion 10 is formed in a shape that fits with the convex portion 9. The hook-shaped portion 13 of the fitting structure portion 11 described in the second embodiment is provided on both sides of the convex portion 9 and the concave portion 10.

According to the configuration of the present embodiment, it is possible to enhance the effect that the

butted surfaces

8, 8 of the

end members

7, 7 are in pressure contact with each other by the component force of the curved portion 18. Therefore, the heat insulation fall prevention effect of the butting surfaces 8 and 8 of the

end materials

7 and 7 can be further improved.

end members

7 and 7 at a substantially central portion of the side in a plan view from the viewpoint of improving rigidity. In the two cases, it is preferable from the viewpoint of improving rigidity that the convex portions 9 and the concave portions 10 of the

end members

(Seventh embodiment)
FIG. 15 is a perspective view of a heat insulating box according to the seventh embodiment of the present disclosure.

The heat insulating box 16 in the present embodiment is used as, for example, a refrigerator casing. At least one of the vacuum heat insulating materials 1 described in the above embodiments is provided on the side surface, the back surface, and the top surface of the heat insulating box 16. Although not shown, the door that opens and closes the heat insulating box 16 is also provided with at least one of the vacuum heat insulating materials 1 described in the above embodiments.

The heat insulating box 16 of the present embodiment uses the vacuum heat insulating material 1 that is low in production cost, has a large cost reduction rate, is inexpensive, and has high dimensional accuracy and rigidity. Therefore, a cheap and highly reliable heat insulating box 16 can be realized.

In addition, the use of the heat insulation box 16 is not limited to the housing of the refrigerator, and may be a housing of various refrigeration equipment such as a vending machine or a tank of LNG or the like, and is not particularly limited. Moreover, the application destination of the vacuum heat insulating material 1 shown in each embodiment is not limited to the heat insulating box 16, and can be applied to a heat insulating panel such as a building material for a house.

As mentioned above, although the vacuum heat insulating material which concerns on this indication has been demonstrated using embodiment, this indication is not limited to these, but can change variously within the range which achieves the objective of this indication. . That is, the scope of the present disclosure is shown not by the above description but by the scope of claims, and is intended to include meanings equivalent to the scope of claims and all modifications within the scope.

As described above, according to the present disclosure, a core material with high dimensional accuracy can be configured with only end materials. Therefore, it is possible to provide a vacuum heat insulating material that is low in production cost, has a large cost reduction rate, is inexpensive, and has high dimensional accuracy and rigidity. Moreover, the heat insulation box and heat insulation panel using this vacuum heat insulating material can be provided. Therefore, this indication can be widely applied to uses, such as a refrigerator, a vending machine, a hot-water supply container, a heat insulating material for cars, a cold insulation / heat insulation box, a building material panel, and a tank of LNG.

DESCRIPTION OF SYMBOLS 1 Vacuum heat insulating material 2 Core material 3 Cover material 3a Laminated sheet 4 Adsorbent 5 Sealing part 6 Sheet-like material 7 End material 8 Butting surface 9 Convex part 10 Concave part 11 Mating structure part 12 Cut 13 Hook shape part 14 Taper 15 Step 16 Heat insulation box 17 Corner part 18 Curved part 21 New core material 22 End material core material

Claims

A jacket material having gas barrier properties;
In the outer jacket material, comprising a vacuum-sealed core material,
The core material is configured by arranging the first end material and the second end material in parallel in one direction,
An engaging portion is provided on the abutting surface of the first end member,
An engaged portion is provided on the butt surface of the second end member,
The vacuum heat insulating material which the said engaging part and the said to-be-engaged part engaged, and the said 1st end material and the said 2nd end material connected.
The vacuum heat insulating material according to claim 1, wherein each of the engaging portion and the engaged portion has a hook shape that prevents disengagement.
The vacuum heat insulating material according to claim 1 or 2, wherein a cut is provided in at least one of the engaging portion and the engaged portion.
A part or the whole of the butting surface portion of each of the first end material and the second end material,
The vacuum heat insulating material according to any one of claims 1 to 3, wherein compression processing in the thickness direction is performed.
The heat insulation box provided with the vacuum heat insulating material of any one of Claim 1- Claim 4.