JP2007253974A - Heat insulating body, opposing structure, and insulating container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulating container which exactly insulates heat and ensures airtight properties by sealing a movable fluid by a sealing layer provided in a heat insulating material, and also to provide an opposing structure for the insulating container, and a heat insulating body used for the insulating container. <P>SOLUTION: The heat insulating body comprises a covering material 35, the heat insulating material 31 stored in the covering material and a sealing layer provided in the heat insulating material. When the heat insulating material is arranged so as to oppose another member adjoining the heat insulating material, the sealing layer 34 is positioned between the heat insulating material and the other member. The movable fluid is sealed by this sealing layer. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a heat retaining container that makes it difficult for the temperature of the stored item to be affected by the outside air temperature when the stored item such as frozen and refrigerated food is stored, transported, and transported.

  Traditionally, when storing and transporting and transporting stored items such as frozen and refrigerated foods, regardless of individuals or industries, the temperature of the stored items is not affected by the outside air temperature. Containers are known.

  In addition, in such a heat insulating container, there is also known a heat insulating container that realizes downsizing at the time of transportation / conveyance by folding in a state in which a stored item is not stored (see, for example, Patent Document 1).

This heat retaining container is provided with four side plates pivotably mounted on four sides of a bottom plate constituting a bottom surface of the housing via a hinge mechanism, and, for example, the thickness of the side plates opposed to each other in the front and rear directions In consideration of this, a standing wall was provided, which enabled the folding of the four side plates.
JP 2004-196411 A

  As described above, in the conventional heat insulation container, the four side plates are fixed to the bottom plate via the hinge mechanism. However, in the above-described heat insulation container, the top plate that covers the upper opening is not provided.

  When the top plate is used, in order to maintain the state of covering the upper opening when in use and to enable the folded state when not in use, the direction of the top plate covering the upper opening and the upper opening are opened. In such a state, it must be configured to be capable of rotating at least 180 degrees in two directions, and there is a problem that it is difficult to employ such a configuration with a hexahedron formed of a thick plate material. .

  Moreover, in the above-mentioned heat insulation container, the hinge mechanism straddling both the bottom plate and the side plate straddles a part of the boundary line, and the other part of the boundary line becomes a slit-like gap, Not only the heat retaining effect is impaired, but also a fluid such as water leaks to the outside of the container, which causes a problem that the stored items are limited.

  The present invention has been made in view of the above-described points, and the object of the present invention is to enable the change of the state of use and the state of folding, between the outside of the container and the inside of the container. Another object is to provide a heat insulating container capable of ensuring airtightness between the two, a structure opposite to the heat insulating container, and a heat insulator used for the heat insulating container.

  In order to achieve the above object, in the present invention, the seal layer provided on the heat insulating material is positioned between the heat insulating material and another member.

Specifically, the insulator according to the present invention is:
A cover material;
A heat insulating material housed in the cover material;
A sealing layer provided on the heat insulating material,
When the heat insulating material is disposed so as to face another member adjacent to the heat insulating material, the seal layer is located between the heat insulating material and the other member.

  The heat insulator includes a cover material, a heat insulating material, and a seal layer. The cover material preferably has an accommodating portion inside. A heat insulating material is accommodated in the cover material accommodating portion. The heat insulating material should just be what can be insulated. The heat insulating material may be either one that can insulate at a low temperature with respect to room temperature or room temperature and one that can insulate at a high temperature.

  The seal layer is provided on the heat insulating material. When the heat insulating material is disposed so as to face the other member, the seal layer is located between the heat insulating material and the other member. As described above, when the seal layer is disposed between the heat insulating material and the other member, it is possible to make it difficult for a fluid such as air to flow between the heat insulating material and the other member, thereby enhancing the heat insulating effect. it can.

  When the heat insulating material is positioned so as to be adjacent to another member, there may be a gap between the heat insulating material and the other member. When such a gap occurs, a fluid such as air may flow through the gap. By providing a seal layer in the heat insulating material, even when a gap is generated, the seal layer is disposed in the gap, so that it is possible to make it difficult for a fluid such as air to flow. The fluid is not limited to air or the like, and fluid that includes fluid such as gas or liquid is included.

  The sealing layer preferably has elasticity. Since it can be made to change according to a gap between a heat insulating material and other members, movement of fluids, such as air, can be prevented more appropriately.

  As described above, the heat insulating material is accommodated in the cover material, and the heat insulating material is provided with a seal layer. By doing in this way, a heat insulating material and a sealing layer can be handled integrally, and handling can be made easy. Further, since the sealing layer can be protected by the cover material, it is possible to prevent the sealing layer from being damaged and to maintain the heat insulating effect.

  The cover material is preferably flexible. In this way, when the heat insulating material and the sealing layer are accommodated in the cover material, it can be adapted to the shape of the heat insulating material and the sealing layer, making it easy to assemble the heat insulating material or replacing the heat insulating material. Can be easily. Further, the cover material preferably has a size suitable for the size of the heat insulating material provided with the seal layer.

The insulator according to the present invention is
The insulation is
A core material,
An outer packaging material in which the core material is housed, which is a vacuum heat insulating material including an outer packaging material capable of maintaining the inside in a reduced pressure state is preferable.

  The heat insulating material includes a core material and an outer packaging material. The core material is made of a material exhibiting a heat insulating effect and may be any material having a predetermined shape. The outer packaging material can store the core material, and may be any material that can maintain the inside of the core material in a reduced pressure state in the state in which the core material is stored. By making the inside a reduced pressure state, the heat insulation effect can be further enhanced.

  By using such a vacuum heat insulating material, the thickness of the heat insulating material can be reduced, and the space can be effectively utilized by reducing the space occupied by the heat insulating material.

The insulator according to the present invention is
The insulation has a plate-like shape including two mutually facing sides;
It is preferable that the sealing layer is provided on at least one of the two mutually facing side surfaces.

  The heat insulating material has a plate shape. This insulation has four sides. The four side surfaces are constituted by two sets of side surfaces facing each other. In addition, a heat insulating material should just have four side surfaces and has plate shape, and the side surfaces which faced each other do not need to be parallel. Further, the thickness of the heat insulating material is not particularly limited, and it may be thin or thick as long as it can be recognized as a plate shape. Further, the plate is not limited to a flat plate, and may be curved.

  The sealing layer is provided on at least one of the two side surfaces facing each other. That is, it should just be provided in at least one side surface among four side surfaces. A fluid that can move through a gap between the side surface provided with the seal layer and another member adjacent to the side surface can be sealed.

The insulator according to the present invention is
The thermal insulation comprises two opposing surfaces sandwiching the two opposing sides;
It is preferable that a plate-like protective material is provided on at least one of the two facing surfaces.

  The insulation includes two opposing surfaces. The two surfaces are formed so as to sandwich two opposite side surfaces. That is, the two surfaces are formed so as to sandwich the four side surfaces described above.

  A plate-shaped protective material is provided on at least one of the two opposing surfaces. By doing so, the strength of the heat insulator can be increased, and even when stress or impact force is applied to the heat insulator, the heat insulator is prevented from being deformed or damaged. Can be properly insulated.

The insulator according to the present invention is
A plate-like protective material is provided on each of the two facing surfaces,
It is preferable that the seal layer is provided so that a part of the seal layer is sandwiched between the plate-shaped protective materials and the remaining part of the seal layer protrudes from the plate-shaped protective material.

  A plate-shaped protective material is provided on each of the two opposing surfaces of the heat insulating material. That is, the heat insulating material is sandwiched between two plate-shaped protective materials. By doing in this way, it can prevent that a heat insulating body deform | transforms or is damaged, and can insulate correctly. In particular, since the heat insulating material is sandwiched between two plate-shaped protective materials, the heat insulating material can be accurately protected regardless of whether the heat insulating material is deformed into a convex shape or a concave shape. Even when an impact force is applied from both of the opposing surfaces, the heat insulating material can be accurately protected.

  In addition, since a part of the seal layer is sandwiched by the plate-shaped protective material, the seal layer can be accurately retained, so that even when a force such as shear stress is applied to the seal layer, the position of the seal layer Can be prevented, and the sealing layer can be prevented from coming off from the heat insulating material. In addition, since the remaining part of the seal layer protrudes from the plate-shaped protective material, the remaining part of the seal layer can be arranged in the gap formed between the heat insulating material and the other member, The movement of fluid such as air can be prevented, and heat insulation can be performed accurately.

The opposing structure of the heat insulator according to the present invention is
It is an opposing structure of a heat insulator using at least two heat insulators described above,
At least a part of the two heat insulators composed of one heat insulator and another heat insulator is disposed adjacent to each other;
The seal layer provided on the one heat insulator is disposed between the one heat insulator and the other heat insulator.

  The opposing structure of the heat insulator uses at least two of the heat insulators described above. In particular, the predetermined two heat insulators are composed of one heat insulator and another heat insulator. At least a part of the one heat insulator and the other heat insulator is disposed adjacent to each other. That is, when the whole of one heat insulator and the whole of the other heat insulator are arranged adjacent to each other, or arranged so that a part of the one heat insulator and the whole of the other heat insulator are adjacent to each other The case where the whole of one heat insulator and a part of another heat insulator are arranged adjacent to each other, or a part of one heat insulator and a part of another heat insulator are mutually There are cases where they are arranged adjacent to each other.

  One heat insulator is provided with a seal layer. That is, it is not necessary to provide a seal layer on both the one heat insulator and the other heat insulator. In addition, when a sealing layer is provided in both the one heat insulator and the other heat insulator, the heat insulation effect can be further enhanced.

  The sealing layer provided in one heat insulator is disposed between one heat insulator and another heat insulator. When one heat insulator is positioned adjacent to another heat insulator, a gap may be formed between the one heat insulator and the other heat insulator. When such a gap occurs, a fluid such as air can move through the gap. By providing the seal layer on one heat insulator, the seal layer is disposed in the gap formed between the one heat insulator and the other heat insulator, so that a fluid such as air can be made difficult to flow.

The opposing structure of the heat insulator according to the present invention is
The sealing layer is provided on the side surface of the one heat insulating material;
It is preferable that the sealing layer provided on the side surface of the one heat insulating material is disposed between the one heat insulating body and the other heat insulating body.

  When one heat insulating material has plate shape, one heat insulating material has four side surfaces. A seal layer is provided on one side surface of one heat insulating material.

  The seal layer provided on the side surface of the one heat insulating material is disposed between the one heat insulating body and the other heat insulating body. By doing in this way, since a sealing layer is arrange | positioned in the gap | interval produced between one heat insulator and another heat insulator, the movement of fluids, such as air, can be prevented.

The thermal insulation container according to the present invention is
A heat insulation container including the above-described heat insulator,
An outer surface made of a deformable material and defining an outer shape;
A plurality of heat insulators housed inside the outer surface material,
The plurality of heat insulators can be used in a state of being assembled and used as a container inside the outer surface material, and in a storage state in which the heat insulators are folded on each other.

  The heat insulating container includes the above-described heat insulator. The heat insulating container includes an outer surface material and a plurality of heat insulators. In addition, in this specification, the heat insulation container includes any case that can be kept cold in a low temperature state and one that can be kept warm in a high temperature state with respect to room temperature or room temperature, and can be insulated from the outside. Good.

  The outer surface material is made of a deformable material. The outer surface material defines the outer shape of the heat insulating container.

  The plurality of heat insulators are housed inside the outer surface material. Here, each of the plurality of heat insulators is the above-described heat insulator. The plurality of heat insulators include not only a case where they are separate from each other but also a case where the plurality of heat insulators are connected to each other by a flexible member.

  The plurality of heat insulators can be in two states, a use state and a storage state. The use state is a state in which a plurality of heat insulators are assembled and can be used as a container of a heat insulating container. The storage state is a state in which a plurality of heat insulators are overlapped with each other. Here, in the storage state, it is only necessary that the plurality of heat insulators are folded on each other. Even when the plurality of heat insulators are separate from each other or when the plurality of heat insulators are connected to each other, it is only necessary that the plurality of heat insulators can fold over each other in the stored state.

  By doing in this way, the heat insulation container which can be thermally insulated from the outside can be comprised, and the temperature of the articles | goods accommodated in the heat insulation container can be maintained. In the storage state, since the plurality of heat insulators can be folded on each other, when not used as a heat insulating container, the size can be reduced, so that space can be saved and the storage space of the heat insulating container can be reduced. Can be used effectively.

The thermal insulation container according to the present invention is
The plurality of heat insulators is composed of six heat insulators,
Each of the six heat insulators has a plate shape,
In the use state, a hexahedron is formed by the six heat insulators,
It is preferable that each of the six heat insulators is assembled as a corresponding wall surface of the hexahedron.

  A plurality of heat insulators consists of six heat insulators. Each of the six heat insulators has a plate shape. In the use state of the heat insulating container, a hexahedron is formed by the six heat insulators. At this time, each of the six heat insulators is assembled as a corresponding wall surface of a hexahedron. That is, one heat insulator corresponds to one wall surface of the hexahedron, and a hexahedron is formed by assembling six heat insulators. The hexahedron is preferably a rectangular parallelepiped.

  By doing in this way, the heat retention container which is easy to handle can be provided.

The thermal insulation container according to the present invention is
When the hexahedron is formed, the seal layer provided on one of the heat insulators at least partially adjacent to each other is adjacent to the one heat insulator and the one heat insulator. What is arrange | positioned between other heat insulating bodies is preferable.

  When a hexahedron is formed by six heat insulators in order to use the heat insulating container, the six heat insulators are arranged so that at least some of them are adjacent to each other. One of the six heat insulators is provided with a seal layer. The other heat insulator among the six heat insulators is disposed adjacent to the one heat insulator. At this time, a seal layer provided on the one heat insulator is disposed between the one heat insulator and the other heat insulator.

  By doing in this way, when six heat insulators are assembled and the heat insulation container is used, a seal layer is disposed between adjacent heat insulators. In the state, the heat insulation from the outside of the heat insulation container can be accurately achieved, and the temperature of the article stored in the heat insulation container can be maintained.

The thermal insulation container according to the present invention is
When the place where the one heat insulator and the other heat insulator are adjacent changes from the use state to the storage state, or when the place changes from the storage state to the use state, the one heat insulator is the other What is a location which slides with respect to this heat insulator is preferable.

  As described above, the heat insulating container can be changed from the use state to the storage state, or can be changed from the storage state to the use state. When this change of state is caused, the one heat insulator and the other heat insulator slide at adjacent positions. For this reason, whenever it uses a heat insulation container, it slides between one heat insulation body and another heat insulation body, Therefore The space | interval of one heat insulation body and another heat insulation body is used as a heat insulation container is used. In some cases, it gradually increases. Thus, even if the heat insulation container is used for a long period of time and the interval between the one heat insulator and the other heat insulator gradually increases, the one heat insulator and the other heat insulator Since a sealing layer is arrange | positioned between these, a heat insulation effect can be maintained.

The thermal insulation container according to the present invention is
It is preferable that each of the inner surface of the outer surface material and the surface of the heat insulator is provided with engaging members of different sexes that can be engaged with each other in the use state.

  When the heat insulating container is assembled, the heat insulating body can be supported on the outer surface by the engaging member, so that the heat insulating container can be easily assembled and the shape of the heat insulating container can be maintained. By doing in this way, since the position of a heat insulating body can be prevented from shifting | deviating, a sealing layer can be arrange | positioned correctly and the heat insulation effect can be maintained.

  The fluid that can move can be sealed by the seal layer provided on the heat insulating material, so that heat insulation or airtightness can be ensured accurately.

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

<Insulation container 1>
Fig.1 (a) shows the perspective view of the use condition of the heat insulation container 1 which concerns on one Embodiment of this invention, FIG.1 (b) shows the perspective view of the folding state of the heat insulation container 1 which concerns on one Embodiment of this invention. The figure is shown.

  As shown in FIG. 1, the heat retaining container 1 has a hexahedral outer surface material 2 whose upper surface can be opened and closed. Six thick heat insulating plates 30 </ b> A to 30 </ b> F are provided inside the outer surface material 2. The six thick heat insulating plates 30A to 30F correspond to “heat insulators”.

<Outer surface material 2>
The outer surface material 2 is made of a material having strength in consideration of the number of stored items and the total weight stored in the heat insulating container 1. Moreover, the outer surface material 2 is made of cloth such as nylon, for example, and can be deformed according to the shape when the six thick heat insulating plates 30A to 30F are assembled. Further, the outer surface material 2 is more preferably one having a certain degree of shape retention. For example, you may make it have what adhered the aluminum foil to the front and back of an air cap sheet | seat inside the outer surface material 2. FIG.

  As shown in FIG. 1, the outer surface material 2 becomes a housing | casing shape (hexahedral shape) in a use state. The upper surface of the outer surface material 2 is formed to be continuous with the upper side of one side surface of the outer surface material 2 by a hinge mechanism, for example, a thin hinge, and can be opened and closed. Further, slide fasteners are provided along the upper sides of the other three side surfaces of the outer surface material 2, so that the outer surface material 2 can be closed. Thus, the upper surface of the outer surface material 2 functions as a lid.

  As shown in FIG. 4, either the male or female surface fastener 21 (see FIG. 4) is provided on the inner surface of the outer surface material 2. In this embodiment, the surface fastener 21 is provided along each of the inner surfaces of the outer surface member 2 along the substantially horizontal direction so as to be separated from each other at two upper and lower (or front and rear) positions. As will be described later, when the six thick heat insulating plates 30A to 30F are assembled, the surface fastener 21 is engaged with the surface fastener 36 provided on each of the thick heat insulating plates 30A to 30F. By doing in this way, the shape when the six thick heat insulation boards 30A-30F are assembled can be stabilized. The above-described hook and loop fasteners 21 and 36 constitute an “engaging member”.

  In addition, you may provide a handle and a shoulder belt in the outer surface material 2 as needed. Moreover, it is good also considering the outer surface of the outer surface material 2 as silver film coating (aluminum foil etc.). By doing in this way, the heat | fever of the air | atmosphere of the outer side of the heat retention container 1 can be reflected.

<Thick insulation plate 30A-30F>
Fig.2 (a) shows the perspective view of the thick heat insulation board 30A-30E of the use condition applied to the heat insulation container 1 which concerns on one Embodiment of this invention, FIG.2 (b) shows one Embodiment of this invention. The perspective view of the thick heat insulation board 30A-30E of the folded state applied to the heat insulation container which concerns is shown.

  As shown in FIG. 2 (a), when the thick heat insulating plates 30A to 30E are assembled and put into use, the thick heat insulating plates 30A to 30E have a substantially rectangular parallelepiped box shape. As shown to Fig.1 (a), the external shape of the outer surface material 2 is demarcated by the thick heat insulation board 30A-30E used as the substantially rectangular parallelepiped box shape. In addition, when the thick heat insulating plates 30A to 30E are folded inside the outer surface material 2, the upper side of the outer surface material 2 can be folded as shown in FIG. It can be made small to make it easier to store or store the heat insulating container 1.

  In the present embodiment, each of the thick heat insulating plates 30A to 30E has a thin plate-like rectangular shape. As shown in FIG. 2 (a), in use, the thick heat insulating plate 30A functions as a bottom surface, the thick heat insulating plate 30B functions as a front surface, and the thick heat insulating plate 30C functions as a back surface, The thick heat insulating plate 30D functions as the left surface, the thick heat insulating plate 30E functions as the right surface, and the thick heat insulating plate 30F functions as the upper surface. In the present embodiment, the thick heat insulating plate 30F is provided on the outer surface material 2 as shown in FIG.

  In addition, in FIG. 1 (a) and (b), FIG. 2 (a) and (b), and FIG. 3, the near side of drawing is the front and the front, The depth side of drawing is the back and the back, The right side of the drawing is the right side and the right side, and the left side of the drawing is the left side and the left side.

  As described above, in the present embodiment, the thick heat retaining plate 30A on the bottom surface has a thin plate-like rectangular shape. The height of the thick heat insulating plate 30D that functions as the left surface and the height of the thick heat insulating plate 30E that functions as the right surface are set to be approximately half or less of the long side of the thick heat insulating plate 30A. By doing so, as shown in FIG. 2B, in the folded state (stored state), the two thick heat insulating plates 30D and 30E are the same on the thick heat insulating plate 30A on the bottom surface. It can be arranged in a plane.

<Assembly and folding of thick heat insulating plates 30B-E>
The assembly of the heat insulating container 1 will be described.

  First, from the folded state shown in FIG. 2 (b), the thick heat insulating plate 30B is raised while rotating forward, and similarly, the thick heat insulating plate 30C is rotated backward. cause. By doing in this way, the thick heat insulation board 30B and the thick heat insulation board 30C will be in the state which rose substantially parallel to each other.

  Next, the thick heat insulating plate 30E is caused to move to the right while being rotated about the side that contacts the thick heat insulating plate 30A on the bottom surface as the rotation axis. By doing in this way, as shown in FIG. 3, the three thick heat insulating plates of the thick heat insulating plate 30B, the thick heat insulating plate 30C, and the thick heat insulating plate 30E are arranged on the bottom thick heat insulating plate 30A. It will be in an upright state.

  Finally, the thick heat insulating plate 30D is caused to move to the left while being rotated about the side in contact with the thick heat insulating plate 30A on the bottom surface as the rotation axis. FIG. 3 is a view showing a state in which the thick heat insulating plate 30D is being raised toward the left. By assembling in the above-described procedure, as shown in FIG. 2A, the thick heat insulating plate 30B, the thick heat insulating plate 30C, the thick heat insulating plate 30D, and the thick heat insulating material are provided on the thick heat insulating plate 30A on the bottom surface. Four thick heat insulation plates upright with the plate 30E, and the two thick heat insulation plates 30B and the thick heat insulation plate 30C facing each other are substantially parallel, and the two thick heat insulation plates 30D and the thick heat insulation plate facing each other. 30E is in a substantially parallel state.

  In addition, what is necessary is just to perform the procedure contrary to the procedure mentioned above when folding the heat retention container 1. FIG. That is, first, while rotating the thick heat insulating plate 30D and the thick heat insulating plate 30E with the side in contact with the thick heat insulating plate 30A on the bottom as a rotation axis, toward the thick heat insulating plate 30A on the bottom surface. Push down. Next, the thick heat insulating plate 30C is pushed down while being rotated toward the already thick pressed heat insulating plate 30D and the thick heat insulating plate 30E. Finally, the thick heat insulating plate 30B is pushed down while being rotated toward the already thick pressed heat insulating plate 30C.

  During the assembly and folding operations described above, the thick heat insulating plate 30D and the thick heat insulating plate 30E are always slid between the thick heat insulating plate 30B and the thick heat insulating plate 30C. That is, when assembling or folding, the front side surface of the thick heat insulating plate 30D and the thick heat insulating plate 30E slides with the inner surface of the thick heat insulating plate 30B, so that shear stress is generated. Further, the rear side surfaces of the thick heat insulating plate 30D and the thick heat insulating plate 30E slide with the inner surface of the thick heat insulating plate 30C to generate shear stress.

<Composition of thick heat insulation board 30A-30F>
FIG. 4 is an enlarged perspective view showing the structure of the multilayer board 40 constituting each of the thick heat insulating boards 30A to 30F according to the embodiment of the present invention. FIG. 5 is an enlarged cross-sectional view of the end portions of the thick heat insulating plates 30A to 30F according to one embodiment of the present invention, and shows the opposing structure according to the present invention. In addition, FIG. 5 showed the cross section which shows the state which the side surface of the back side of thick heat insulating board 30D contact | abutted the inner surface of thick heat insulating board 30C as a representative example of thick heat insulating board 30A-30F. .

  As shown in FIGS. 4 and 5, each of the thick heat insulating plates 30 </ b> A to 30 </ b> F includes a heat insulating material 31, an inner protective material 32, an outer protective material 33, an elastic sealing material 34, a cover 35, and a surface fastener. 36. The multilayer board 40 is comprised by the heat insulating material 31, the inner side protective material 32, and the outer side protective material 33 so that it may mention later.

  As shown in FIG.4 and FIG.5, the heat insulating material 31 is located in the approximate center of the cross section of the thick heat insulation board 30A-30F. The inner protective material 32 is located on both surfaces (front and back) of the heat insulating material 31. The outer protective material 33 is located on the outer surface of the inner protective material 32. The elastic sealing material 34 is provided on the side surface of the multilayer board 40 constituted by the heat insulating material 31, the inner protective material 32, and the outer protective material 33. The cover 35 covers the entire multilayer board 40 including the elastic sealing material 34. As shown in FIG. 2A or 3, the hook-and-loop fastener 36 is provided on the outer surface side of the cover 35, and when the thick heat insulating plates 30 </ b> B to E are assembled, the inner surface of the outer surface material 2 described above. It is possible to engage with a surface fastener 21 provided on the side.

  As shown in FIG. 5, the side surface of the thick heat retaining plate 30 </ b> D and the inner surface of the thick heat retaining plate C face each other at the abutting surface 38. The elastic sealing material 34 may be provided only on the side surface of the thick heat retaining plate 30D on the contact surface 38. That is, the elastic sealing material 34 may be provided only on the side surface of one thick heat insulating plate at the place where the two thick heat insulating plates abut, and the elastic sealing material 34 is provided on the surface of the other thick heat insulating plate. There is no need. For example, as shown in FIG. 2A or FIG. 3, the front side surface of the thick heat insulating plate 30D or the thick heat insulating plate 30E is in contact with the inner surface of the thick heat insulating plate 30B, and the thick heat insulating plate The rear side surface of 30D and the thick heat insulating plate 30E is in contact with the inner surface of the thick heat insulating plate 30C, and the lower side surface of the thick heat insulating plate 30D and the thick heat insulating plate 30E is the thick heat insulating plate 30A. It abuts on the upper surface. For this reason, the elastic sealing material 34 may be provided only on the front side surface, the rear side surface, and the lower side surface of the thick heat insulating plate 30D and the thick heat insulating plate 30E. Further, when the thick heat insulating plate 30F is assembled as the heat insulating container 1 and functions as a lid, the four side surfaces of the thick heat insulating plate 30F are the thick heat insulating plate 30B, the thick heat insulating plate 30C, and the thick heat insulating plate 30D. Therefore, the elastic sealing material 34 may be provided on the four side surfaces of the thick heat insulating plate 30F (see FIG. 1A).

  As described above, in this embodiment, the elastic sealing material 34 is provided only on the side surface of one thick heat insulating plate, and the elastic sealing material 34 is not provided on the inner surface of the other thick heat insulating plate. As described above, when assembling or folding, one of the two thick heat insulating plates that come into contact with each other slides relative to the other, and shear stress is generated. For this reason, when the elastic sealing material 34 is provided on the surface of the thick heat insulating plate, the position of the elastic sealing material 34 may gradually shift due to shear stress as the operations of assembly and folding are repeated. It is necessary to prevent a situation in which sealing cannot be performed accurately.

<Insulation 31>
The heat insulating material 31 has a substantially thin plate shape having two substantially parallel planes facing each other. In the present embodiment, it is preferable to use a vacuum heat insulating material as the heat insulating material 31. The vacuum heat insulating material is composed of a core material and an outer packaging material.

  When a normal foamed plastic heat insulating material is used as the heat insulating material 31, the heat insulating material 31 itself is resistant to contact and has a certain degree of elasticity, so even if it is brought into direct contact with other members via a cover 35 described later. Since a certain degree of sealing effect is exhibited, it is difficult to exert the effect of the sealing layer of the present invention (an elastic sealing material 34 described later). On the other hand, when a vacuum heat insulating material is used as the heat insulating material 31, if a tear or a pinhole or the like occurs in an outer packaging material for storing a core material of the vacuum heat insulating material described later, a vacuum inside the vacuum heat insulating material is generated. However, it is not preferable to cause friction or contact with other members even though the cover 35 is used. Since it cannot be pressed, the sealing performance is very weak. Therefore, as will be described later, a separate seal layer (elastic seal material 34) is important.

<Vacuum insulation core material>
As the core material of the vacuum heat insulating material, for example, a fiber-based core material such as inorganic fiber / organic fiber, an open-cell foamed plastic-based core material such as rigid urethane foam or polystyrene foam, and a powder-based core material such as silica powder are preferably used. Inorganic fiber-based core materials, organic fiber-based core materials, and rigid urethane foam-based core materials are used.

  Here, when using an inorganic fiber-based core material, for example, glass fiber (glass wool), alumina fiber, slag wool fiber, silica fiber, rock wool, and the like are conceivable. Under the present circumstances, it can be set as the single fiber which used these materials independently, or the mixed fiber which combined arbitrarily. Basically, it is preferable that the heat insulating property is excellent, the mass productivity is high, and the cost is low. Glass fiber (glass wool) is preferable.

  In the present embodiment, the fiber length in the case of using glass wool is preferably 1 to 100 mm. At this time, if the fiber length is too long, the occurrence of folds and wrinkles when matched to the curved surface shape increases, and therefore, the optimal length is 3 to 30 mm.

Further, the density at this time is preferably 100 to 300 kg / m ³ . At this time, if the density is too small, the strength as the core material is lowered and the heat insulating property tends to be lowered. Therefore, if the density is too light or too heavy, the heat insulating property tends to decrease. More preferably, it is 120-250 kg / m < ³ >.

  On the other hand, when using an organic fiber core material, synthetic fibers such as polyester fiber, acrylic fiber, polyethylene fiber, polypropylene fiber, nylon fiber, polyvinyl alcohol fiber, polyurethane fiber, polynosic fiber, rayon fiber, hemp, silk Natural fibers such as cotton and wool can be considered. Under the present circumstances, it can be set as the single fiber which used these materials independently, or the mixed fiber which combined arbitrarily. Basically, it is preferable that the hygroscopic property is low and the heat insulating property is excellent, the mass productivity is high, and the cost is low. Polyester fibers are preferable, and polyethylene terephthalate (PET) fibers are particularly preferable.

  In the present embodiment, the preferred fiber thickness of the organic fiber is preferably 1 to 6 denier. If it is less than 1 denier, it becomes difficult to process it into a sheet (plate), and if it exceeds 6 denier, the heat insulation tends to decrease. More preferably, it is 1-3 denier.

  Moreover, the preferable fiber length of an organic fiber is 10-150 mm. When the fiber length is less than 10 mm, it becomes difficult to process into a sheet (plate), and when the fiber length is 150 mm or more, the heat insulating property tends to decrease. More preferably, it is 20-80 mm.

  On the other hand, when an open-celled rigid polyurethane foam core material is used, a thermosetting polyurethane foam that is foam-molded to form an open-cell structure using a polyol component and an isocyanate component as main reaction components is preferable. This is due to the fact that the heat insulation is very excellent compared to other synthetic resin foams. Moreover, the shape retention property by hot press processing etc. is high, and it can shape to various shapes.

The density of the open cell synthetic resin foam is usually 40 to 80 kg / m ³ , and preferably 50 to 70 kg / m ³ . In addition, the density uses the value measured according to the method prescribed | regulated to JISK7222. A closed cell ratio of 10% or less is used, and a higher open cell property, that is, a smaller closed cell rate is preferable. For the closed cell ratio, a value measured according to the method defined in ASTM D2856 is used. Moreover, as an average cell diameter, it is 20-120 micrometers normally, Preferably it is 30-100 micrometers.

<Vacuum insulation material for vacuum insulation>
The outer packaging material for storing the vacuum insulation core material is preferably a bag-like material that is slightly larger than the core material. By making it slightly larger than the core material, it is possible to facilitate the operation of housing the outer packaging material. Further, by using a bag-like outer packaging material, it is only necessary to heat-seal only one side after decompressing the inside, so workability can be improved.

  As the outer packaging material of the vacuum heat insulating material, any material can be used as long as it has gas barrier properties and can maintain the inside at a reduced pressure, and preferably heat sealable. As a specific example, for example, from the outermost layer, nylon, aluminum vapor-deposited PET (polyethylene terephthalate), aluminum foil, and a gas barrier film having a four-layer structure of high-density polyethylene as the innermost layer, from the outermost layer to a polyethylene terephthalate resin, an intermediate layer Aluminum foil, gas barrier film made of high-density polyethylene resin in the innermost layer, PET resin in the outermost layer, ethylene-vinyl alcohol copolymer resin having an aluminum vapor deposition layer in the intermediate layer, gas barrier film made of high-density polyethylene resin in the innermost layer, etc. There is.

  In the outer packaging material in the vacuum heat insulating material of the present invention, from the viewpoint of further improving the heat insulation over time, a gas generated inside the vacuum heat insulating material after decompressing the inside, for example, outgas and moisture generated from the core material It is preferable to store a gas adsorbent that adsorbs gas and moisture entering from the outside together with the core material.

  The gas adsorbing material is not particularly limited, and examples of materials that physically adsorb gas, moisture, etc. include activated carbon, silica gel, aluminum oxide, molecular sieve, zeolite, and the like. 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.

  Since the outer packaging material larger than the core material is used for the vacuum heat insulating material described above, a surplus portion (reference numeral 39 shown in FIG. 5) around the core material, so-called fin portion, is formed in the outer packaging material. The surplus portion 39 includes the above-described heat-sealed portion. In order to clarify the outer shape of the vacuum heat insulating material and facilitate the handling of the vacuum heat insulating material, it is preferable to fold the excess portion 39 of the outer packaging material and fix it with an adhesive tape or the like. As described above, when a vacuum heat insulating material is used as the heat insulating material 31, the side surface of the heat insulating material 31 is not flat but tends to be a curved surface because the surplus portion 39 of the outer packaging material is bent. (See FIG. 5), the shape of the side surface of the heat insulating material 31 cannot be clearly defined in many cases.

  As described above, the above-described vacuum heat insulating material is preferably used as the heat insulating material 31, but a styrene foam heat insulating material may be used.

<Inner protective material 32, outer protective material 33>
The inner protective material 32 and the outer protective material 33 protect the heat insulating material 31, and are particularly useful when a vacuum heat insulating material is used. As described above, when a vacuum heat insulating material is used as the heat insulating material 31, the side surface of the vacuum heat insulating material usually has a curved surface due to the surplus portion 39, and a seal layer (elastic seal) is formed on the side surface of the vacuum heat insulating material. It is unavoidable that the material 34) is difficult to provide, particularly a structure that is difficult to stick. For this reason, as will be described later, by forming the inner protective material 32 and the outer protective material 33 into a plate shape, the shape of the side surfaces of the inner protective material 32 and the outer protective material 33 can be made flat. it can. By doing in this way, a sealing layer can be stuck over the side surface of the inner side protection material 32, and the side surface of the outer side protection material 33, and it becomes possible to provide a sealing layer easily and reliably. Furthermore, the vacuum heat insulating material has an inner protective material 32 and an outer protective material 33 because the degree of vacuum is lowered and the thermal performance is lowered when the outer packaging material covering the core material is torn or pinholes are generated. It is important to protect the heat insulating material 31 also in maintaining the heat insulating performance.

  The inner protective material 32 and the outer protective material 33 have a plate-like shape having substantially the same area as the two flat surfaces of the heat insulating material 31. As shown in FIG. 4 or 5, an inner protective material 32 is attached to each of the two planes of the heat insulating material 31. An outer protective material 33 is bonded to each of the two bonded inner protective materials 32. In the example shown in FIG. 4, the end surface 41 of the multilayer board 40 constituted by the heat insulating material 31, the inner protective material 32, and the outer protective material 33 is shown to be substantially flush, but as described above, In the case where a vacuum heat insulating material is used as the heat insulating material 31, since a curved surface is formed by bending the surplus portion 39 of the outer packaging material, a step may occur on the end surface 41 of the multilayer board 40 as shown in FIG. . As will be described later, an elastic sealing material 34 is attached to the end face 41 of the multilayer board 40.

  A foamed polyethylene plate material is used for the inner protective material 32, and a polypropylene (PP) plate material is used for the outer protective material 33. For example, a cardboard sheet is used for the inner protective material 32 or the outer protective material 33. It is not limited to. In addition, the inner protective material 32 and the outer protective material 33 are determined in material, thickness, and the like according to the intended temperature retention, strength, etc. of the stored items. As shown to (a)-FIG.8 (c), what used the protective material of any one of the inner side protective material 32 and the outer side protective material 33 (in the figure, inner side protective material 32) may be used. Further, only the heat insulating material 31 may be one without both the inner protective material 32 and the outer protective material 33. When both the inner protective material 32 and the outer protective material 33 are used, it is preferable to use a material that is softer than the outer protective material 33 for the inner protective material 32. In this case, the inner protective material 32 and the outer protective material 33 are 2/3 to 1/2 of the entire thickness including the heat insulating material 31. Therefore, the heat insulating material 31 is 1/3 to 1/2 of the entire thickness.

  The inner protective material 32 and the outer protective material 33 described above correspond to a “plate-shaped protective material”.

<First Mode of Elastic Seal Material 34>
As described above, the elastic sealing material 34 is provided on the side surface of the multilayer board 40 constituted by the heat insulating material 31, the inner protective material 32, and the outer protective material 33 (see FIG. 4 or FIG. 5).

  The elastic sealing material 34 has a long shape that matches the shape of the end surface 41 of the multilayer board 40 constituted by the heat insulating material 31, the inner protective material 32, and the outer protective material 33.

  The width D (see FIG. 4) of the elastic sealing material 34 is substantially the same as or greater than the thickness d of the multilayer board 40 in consideration of the thickness of the multilayer board 40 and the hardness depending on the material of the elastic sealing material 34. Is also narrow. Further, the length L of the elastic sealing material 34 is substantially the same as the length l of the side of the multilayer board 40 to which the elastic sealing material 34 is adhered, from the viewpoint of ensuring airtightness. Furthermore, the thickness W of the elastic sealing material 34 (the length protruding from the end face 41 of the multilayer board 40) is about 1 to 20 mm, and is preferably about 3 to 10 mm in view of workability when covered with the cover 35.

  The end face 41 of the heat insulating material 31 may be provided with a protective material similar to the inner protective material 32 (or the outer protective material 33), and an elastic sealing material may be provided on the outer side of the protective material.

  The elastic sealing material 34 has sufficient durability even when the assembly and folding of the thick heat insulating plates 30A to 30F are repeated, and the elastic sealing member 34 has an inner surface of the abutting thick heat insulating plates 30A to 30F. In this relation, when sliding, the frictional resistance is small, and when the thick heat insulating plates 30A to 30F are assembled and put into use, the material having elasticity so as to ensure the sealing property of the abutting portion. Things are used. As such an elastic seal material 34, a foamed plastic seal material, a silicon rubber seal material, a butyl rubber seal material, and the like are conceivable.

  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.

<Second Mode of Elastic Seal Material 34>
FIG. 6A is a cross-sectional view showing a second mode of the elastic sealing material 34.

  In the second aspect, the heat insulating material 31 is substantially flush with the inner protective member 32 and the outer protective member 33, and the entire end surface 41 of the multilayer board 40 is substantially flush. . As described above, when a vacuum heat insulating material is used as the heat insulating material 31, the surplus portion 39 is bent, but by appropriately bending the surplus portion, as shown in FIG. The entire end surface 41 of the plate 40 can be finished to be substantially flush. In such a case, the elastic sealing material 34 can be attached to all of the heat insulating material 31, the inner protective material 32, and the outer protective material 33, and the elastic sealing material 34 can be accurately attached to the end surface 41 of the multilayer board 40. Can be attached to.

  Further, in this second aspect, the width D (see FIG. 4) of the elastic sealing material 34 is narrower than the thickness d (see FIG. 4) of the multilayer board 40, and the gap S1 is formed at the end of the elastic sealing material 34. Has occurred. By using such an elastic sealing material 34, the work of attaching the elastic sealing material 34 to the end face 41 of the multilayer board 40 can be facilitated, and the elastic sealing material 34 does not protrude from the end face 41 of the multilayer board 40. The elastic sealing material 34 can be attached so that the heat insulation effect can be sufficiently exhibited.

<Third Aspect of Elastic Seal Material 34>
FIG. 6B is a cross-sectional view showing a third aspect of the elastic sealing material 34.

  As described above, when a vacuum heat insulating material is used as the heat insulating material 31, it becomes a curved surface by bending the surplus portion 39 of the outer packaging material, so that the end surface 41 of the multilayer board 40 is shown in FIG. 6B. In some cases, a step may occur. The third mode is a case where a step is generated on the end face 41 of the multilayer board 40 and a gap S2 is generated at the end of the heat insulating material 31. In the third aspect, since it is not necessary to make the heat insulating material 31 flush with the inner protective material 32 and the outer protective material 33, the work of attaching the inner protective material 32 and the outer protective material 33 to the heat insulating material 31 is simple. Can be.

  An inner protective material 32 is attached to each of the two flat surfaces of the heat insulating material 31. An outer protective material 33 is bonded to each of the two bonded inner protective materials 32. As described above, the inner protective member 32 and the outer protective member 33 have a plate shape, and the side surface of the inner protective member 32 and the side surface of the outer protective member 33 are both flat. For this reason, the end surface 41 of the multilayer board 40 can be defined by the side surface of the inner protective material 32 and the side surface of the outer protective material 33. In the case of this third mode, the elastic sealing material 34 is adhered to the side surface of the inner protective material 32 and the side surface of the outer protective material 33. Since the side surface of the inner protective member 32 and the side surface of the outer protective member 33 are both flat, the elastic sealing member 34 can be accurately attached even in the third embodiment.

  Also in this third aspect, the width D (see FIG. 4) of the elastic sealing material 34 is narrower than the thickness d (see FIG. 4) of the multilayer board 40, and the gap S1 is formed at the end of the elastic sealing material 34. Has occurred. By using such an elastic sealing material 34, the work of attaching the elastic sealing material 34 to the end face 41 of the multilayer board 40 can be facilitated, and the elastic sealing material 34 does not protrude from the end face 41 of the multilayer board 40. The elastic sealing material 34 can be attached so that the heat insulation effect can be sufficiently exhibited.

<Fourth Mode of Elastic Seal Material 34>
FIG. 6C shows the case where the end of the elastic sealing material 34 is formed to be slightly rounded. By making the end of the elastic sealing material 34 into such a shape, it is possible to reduce the frictional force and shear stress generated when the heat insulation container is assembled and folded, and to facilitate the work. Deterioration of the elastic sealing material 34 due to the pre-stage stress can be prevented.

  In the example shown in FIG. 6C, the end of the elastic sealing material 34 is rounded. However, the elastic sealing material 34 has a circular, elliptical, or oval cross section. You may make it become the shape which consists of a curved surface.

  Furthermore, as a result of the elastic sealing material 34 being pressed, the shape as shown in FIG. For example, there is another member (not shown) on the left side of FIG. 6C, and the elastic sealing material 34 is pressed by the other member from the left side of FIG. It may be modified as shown in FIG.

<Fifth Aspect of Elastic Seal Material 34>
FIG. 7A is a diagram showing a fifth mode of the elastic sealing material 34.

  FIG. 7A shows an example in which the heat insulating material 31 is protected by only two inner protective materials 32. The heat insulating material 31 can be sufficiently protected only by the inner protective material 32 according to the thickness of the heat insulating material, the material of the inner protective material, and the like. In this case, an elastic sealing material is stuck on the side surface of the inner protective material.

<Sixth Aspect of Elastic Seal Material 34>
FIG. 7B is a cross-sectional view showing a sixth aspect of the elastic sealing material 34.

  In the sixth aspect, the elastic sealing material 34 is sandwiched between the inner protective material 32 and the outer protective material 33. FIG. 7 (b) shows that the elastic sealing material 34 is sandwiched by only the two inner protective materials 32, but the outer protective material 33 is pasted outside the inner protective material 32 as shown in FIG. You may wear it. By holding the elastic sealing material 34 between the inner protective material 32 and the outer protective material 33, the assembly and folding operations are repeated, so that the side of the thick heat insulating plate corresponds to the inner side of the corresponding thick heat insulating plate. Even when the surface repeatedly slides and shear stress is repeatedly applied, the elastic sealing material 34 can be accurately held between the two inner protective materials 32, and the heat insulating effect can be maintained. .

  In the sixth aspect, the width D of the elastic sealing material 34 may be substantially the same as the interval between the two inner protective members 32 or may be longer than the interval between the two inner protective members 32. Good. When the width D of the elastic sealing material 34 is longer than the interval between the two inner protective materials 32, the elastic sealing material 34 is pressed between the two inner protective materials 32 and the two inner protective materials 32 are pressed. It only has to be attached. By doing in this way, the elastic sealing material 34 can be more accurately held between the two inner protective members 32 by the pressing force of the two inner protective members 32.

<Seventh Mode of Elastic Seal Material 34>
FIG. 7C is a cross-sectional view showing a seventh aspect of the elastic sealing material 34.

  In the seventh aspect, the elastic sealing material 34 is formed in a convex shape in cross section in advance. The portion where the convex width is narrowed is sandwiched between the two inner protective members 32. By doing in this way, the front-end | tip part of the two inner side protection materials 32 can also be made to contact with the elastic sealing material 34, the contact area of the elastic sealing material 34 and the two inner side protection materials 32 can be increased, and thickness is increased. Even when the meat heat insulating plate is repeatedly slid, the elastic sealing member 34 can be accurately held between the two inner protective members 32, and the heat insulating effect can be maintained.

  Also in this sixth aspect, the strength of the thick heat insulating plate may be increased by sticking the outer protective material 33 to the outer side of the inner protective material 32.

<Eighth Aspect of Elastic Seal Material 34>
FIG. 8A is a cross-sectional view showing an eighth aspect of the elastic sealing material 34.

  In the eighth aspect, a bent portion 32a is formed at the end of the inner protective member 32 (or the outer protective member 33). The inner protective material 32 is arranged so that the two bent portions 32a face each other. Further, the elastic sealing material 34 can be accurately held between the two inner protective materials 32 by causing the elastic sealing material 34 to be bitten by the two bent portions 32a.

  In the eighth aspect, the elastic sealing material 34 may be formed in advance so as to fit the two bent portions 32a. By doing in this way, it can prevent that the elastic sealing material 34 deteriorates by the biting by the two bending parts 32a.

  Also in this eighth aspect, the strength of the thick heat insulating plate may be increased by sticking the outer protective material 33 to the outside of the inner protective material 32.

<Ninth Aspect of Elastic Seal Material 34>
FIG. 8B is a cross-sectional view showing a ninth aspect of the elastic sealing material 34.

  In the ninth aspect, as in the fourth aspect, the inner protective member 32 (or the outer protective member 33) having a bent portion 32a formed at the end thereof is used. In addition, as the elastic sealing material 34, a material whose cross-sectional shape is formed in advance is used. A portion where the width of the convex mold becomes narrow is provided so as to protrude outward from between the two bent portions 32a. Even in this case, the elastic sealing material 34 can be accurately held between the two inner protective materials 32.

  Also in the ninth aspect, the strength of the thick heat insulating plate may be increased by sticking the outer protective material 33 to the outer side of the inner protective material 32.

<10th aspect of the elastic sealing material 34>
FIG. 8C is a cross-sectional view showing a tenth aspect of the elastic sealing material 34.

  In the tenth aspect, a holding member 37 in which a long slit is formed is used. As the elastic sealing material 34, one formed in advance with a convex cross-sectional shape is used. After the elastic sealing material 34 is sandwiched between the two inner protective materials 32, the holding member 37 is covered so that the portion where the width of the convex shape of the elastic sealing material 34 becomes narrower protrudes from the slit of the holding member 37. Also by doing in this way, the elastic sealing material 34 can be accurately held between the two inner protective materials 32, and the heat insulating effect can be maintained.

  As described above, in the second to sixth embodiments, the shape of the cross section of the elastic sealing material 34 may be the same as that of the illustrated cross section, or the cross section may be rectangular. May be compressed and deformed when sandwiched between the inner protective material 32 (or the holding member 37).

  The elastic sealing material 34 described above corresponds to a “seal layer”.

<Cover 35>
The cover 35 accommodates the multilayer board 40 constituted by the heat insulating material 31, the inner protective material 32, and the outer protective material 33. The cover 35 preferably has a bag shape that is slightly larger than the multilayer board 40. In particular, it is preferable that the storage opening for storing the multilayer board 40 is provided with a surface fastener. By making the size of the cover 35 slightly larger than that of the multilayer board 40, the operation of storing the multilayer board 40 can be facilitated. In addition, the bag-like cover provided with the hook-and-loop fastener can facilitate replacement of the multilayer board 40 when the multilayer board 40 is damaged or deteriorated. The inner and outer surfaces of the cover 35 may be a silver film. By doing in this way, radiation can be prevented.

  The cover 35 corresponds to a “cover material”.

<Outline of thermal insulation container 1>
When the heat insulating container 1 is in use, as shown in FIG. 2 (a), the thick heat insulating plate 30A on the bottom surface is in a horizontal state, and the thick heat insulating plate 30B on the front surface and the thick heat insulating plate 30C on the rear surface. Each of the left-side thick heat insulating plate 30D and the right-side thick heat insulating plate 30E is in an upright state.

  In this standing state, as shown in FIG. 2 (a), the left thick heat insulating plate 30D and the right thick heat insulating plate 30E are the front thick heat insulating plate 30B and the rear thick heat insulating plate 30C. It is sandwiched between. Further, the thick heat insulating plate 30F on the upper surface is provided at the upper ends of the thick heat insulating plate 30B on the front surface, the thick heat insulating plate 30C on the rear surface, the thick heat insulating plate 30D on the left surface, and the thick heat insulating plate 30E on the right surface. It is located so as to be surrounded (see FIG. 1A).

  Therefore, as for the thick heat insulating plate 30A on the bottom surface, there are four of the thick heat insulating plate 30B on the front surface, the thick heat insulating plate 30C on the back surface, the thick heat insulating plate 30D on the left surface, and the thick heat insulating plate 30E on the right surface. In relation to the thick heat insulating plate, it is not necessary to provide the elastic sealing material 34 on the thick heat insulating plate 30A on the bottom surface. In addition, in order to ensure the adhesiveness with the inner surface of the outer surface material 2, the elastic sealing material 34 may be provided on all of the side surfaces of the thick heat insulating plate 30A on the bottom surface.

  In addition, the front thick heat insulating plate 30B and the rear thick heat insulating plate 30C are adjacent to the bottom thick heat insulating plate 30A in the standing state. Therefore, the elastic sealing material 34 is provided on the side surface (the bottom surface side in the standing state) adjacent to the thick heat insulating plate 30A among the side surfaces of the front thick heat insulating plate 30B and the rear thick heat insulating plate 30C. It is necessary to provide. In addition, in order to ensure the adhesiveness with the inner surface of the outer surface material 2, an elastic sealing material 34 may be provided on the other side surface. In this case, the elastic sealing material 34 is provided on all of the side surfaces of the front thick heat retaining plate 30B and the rear thick heat retaining plate 30C. By doing in this way, when work which replaces the front thick heat insulating board 30B and the rear thick heat insulating board 30C, the front thick heat insulating board 30B or the rear thick heat insulating board is performed. It is not necessary to consider the direction of 30C, and workability can also be improved.

  In the standing state, the left thick heat insulating plate 30D and the right thick heat insulating plate 30E are adjacent to the bottom thick heat insulating plate 30A, and the front thick heat insulating plate 30B and the rear thick heat insulating plate. Adjacent to 30C. For this reason, among the side surface of the left thick heat insulating plate 30D and the side surface of the right thick heat insulating plate 30E, the bottom thick heat insulating plate 30A, the front thick heat insulating plate 30B, and the rear thick heat insulating plate. It is necessary to provide an elastic sealing material 34 on the side surface adjacent to the plate 30C. In addition, in order to ensure the adhesiveness with the inner surface of the outer surface material 2, an elastic sealing material 34 may be provided on the other side surface. In this case, the elastic sealing material 34 is provided on all of the side surfaces of the front thick heat retaining plate 30D and the rear thick heat retaining plate 30C. By doing in this way, when work which replaces the front thick heat insulating plate 30D and the rear thick heat insulating plate 30C, the front thick heat insulating plate 30D and the rear thick heat insulating plate 30C are performed. Therefore, it is not necessary to consider the direction, and workability can be improved.

  Further, when the upper thick heat insulating plate 30F is closed as a lid, the front thick heat insulating plate 30B, the rear thick heat insulating plate 30C, the left thick heat insulating plate 30D, and the right thick wall Surrounded by the upper end of the heat insulating plate 30E. For this reason, it is necessary to provide the elastic sealing material 34 on all four side surfaces of the thick heat retaining plate 30F on the upper surface.

  When the thick heat insulating plates 30B to 30E are in the folded state, as shown in FIG. 2 (b), the thick heat insulating plates 30D and 30E are arranged in parallel directly above the thick heat insulating plate 30A. The thick heat insulating plates 30B and 30C are superposed on the thick heat insulating plates 30D and 30E.

  As described above, the left thick heat insulating plate 30D and the right thick heat insulating plate 30E are sandwiched between the front thick heat insulating plate 30B and the rear thick heat insulating plate 30C. For this reason, when changing the state from the use state shown in FIG. 1 (a) to the folded state shown in FIG. 1 (b), or conversely, when changing from the folded state to the use state, The front side surface of the heat insulation plate 30D and the thick heat insulation plate 30E slides with the inner surface of the thick heat insulation plate 30B, and the rear side surface of the thick heat insulation plate 30D and the thick heat insulation plate 30E It slides on the inner surface of the thick heat insulating plate 30C. Since the elastic sealing material 34 is provided on the sliding surface, adhesion is ensured by the elastic sealing material 34 even during the sliding, and the front thick heat retaining plate 30B and the rear thick wall are secured. Even when the heat retaining plate 30C is completely raised, adhesion can be ensured and sealing can be performed accurately. The folded state described above corresponds to the “stored state”.

  Next, an example of manufacturing the thick heat insulating plates 30B to 30E will be described.

  The thick heat insulating plates 30B to 30E form the heat insulating material 31 in a suitable shape and size, and this drying process is performed at 100 ° C. for about one hour. It may be used in combination. Moreover, it is preferable to dry at a vacuum degree of about 0.5 to 0.01 Torr.

A vacuum heat insulating material was used as the heat insulating material 31, and an open cell rigid urethane foam (density: 55 kg / m ³ , average cell: 75 μm) was used as the core material. In the present embodiment, the size of the core material is 500 mm × 500 mm, and the thickness of the core material is 10 mm.

  In order to laminate the core material and remove moisture contained therein, a drying treatment was performed at 100 ° C. for about one hour. The dried core material was inserted into the outer packaging material made of a gas barrier film consisting of four layers of nylon, aluminum vapor-deposited PET, aluminum foil, and high-density polyethylene, and at the same time, one getter material was inserted into the outer packaging material. . Then, it is sealed by reducing the pressure so that the internal pressure becomes 0.05 Torr with a vacuuming device, and this is used as a vacuum heat insulating material.

  By folding the extra envelope material around the vacuum heat insulating material obtained by the above method, so-called fin portion, and fixing this fin portion to either the front surface or the back surface of the vacuum heat insulating material with an adhesive tape, A heat insulating material 31 was obtained.

  Next, a foamed polyethylene plate material was attached as an inner protective material 32 to both the front and back surfaces of the heat insulating material 31, and a foamed polypropylene substrate material was attached as an outer protective material 33 thereon. Furthermore, the multilayer board 40 which consists of the heat insulating material 31, the inner side protective material 32, and the outer side protective material 33 was coat | covered with the gum tape. An elastic sealing material 34 was attached to the side surface of the multilayer board 40. This was accommodated in the cover 35, and it was set as the thick heat insulation board 30A-30F.

  In embodiment mentioned above, in thick heat insulating board 30B-30E which comprises four wall surfaces on the front, back, left, and right, the thick wall which comprises the left and right wall surfaces inside thick heat insulating plates 30B and 30C which constitute the front and rear wall surfaces Although the case where the heat insulating plates 30D and 30E are located is disclosed, the thick heat insulating plate 30B configuring the front and rear wall surfaces inside the thick heat insulating plates 30D and 30E that constitute the left and right wall surfaces on the contrary, 30C may be located. Further, the thick heat retaining plates 30B to 30E may be sequentially positioned on the inner side in the clockwise direction or the counterclockwise direction.

  Further, the thick heat insulating plate 30 </ b> F constituting the upper surface may be always fixed to the back surface of the upper surface of the outer surface material 2. At this time, the thick heat insulating plate 30F may be fixed using a double-sided tape or various adhesives without using the surface fastener 36, including the thick heat insulating plate 30A constituting the bottom surface.

It is the perspective view (a) which shows the use condition of the heat retention container 1 which concerns on one Embodiment of this invention, and the perspective view (b) which shows the folding state of the heat insulation container 1 which concerns on one Embodiment of this invention. The perspective view (a) which shows the thick heat insulation board in the use condition used for the heat insulation container 1 which concerns on one Embodiment of this invention, and the thick heat insulation in the folding state used for the heat insulation container 1 which concerns on one Embodiment of this invention It is the perspective view (b) which shows a board. It is a perspective view which shows the state in the middle of raising the thick heat insulating board 30D toward right. It is an expansion perspective view which shows the structure of the multilayer board 40 which comprises each of thick heat insulation board 30A-30F which concerns on one Embodiment of this invention. It is an expanded sectional view of the end of thick heat insulation board 30A-30F concerning one embodiment of the present invention. It is an expanded sectional view which shows the aspect of the elastic sealing material used for the heat retention container which concerns on one Embodiment of this invention. It is an expanded sectional view which shows the modification of the elastic sealing material used for the heat retention container which concerns on one Embodiment of this invention. It is an expanded sectional view which shows the other modification of the elastic sealing material used for the heat retention container which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermal insulation container 2 Outer surface material 21 Face fastener 30A Thick wall thermal insulation board (bottom surface)
30B thick insulation board (front)
30C thick insulation board (back)
30D thick insulation board (left side)
30E Thick wall insulation board (right side)
30F thick insulation board (top)
31 Heat Insulating Material 32 Inner Protection Material 33 Outer Protection Material 34 Elastic Seal Material 35 Cover 36 Surface Fastener 37 Holding Member

Claims (12)

A cover material;
A heat insulating material housed in the cover material;
A sealing layer provided on the heat insulating material,
When the heat insulating material is disposed so as to face another member adjacent to the heat insulating material, the seal layer is located between the heat insulating material and the other member. body. The heat insulating material is
A core material,
2. The heat insulating body according to claim 1, wherein the heat insulating body is a vacuum heat insulating material including an outer packaging material in which the core material is housed and an inner packaging material capable of maintaining the inside in a reduced pressure state. The heat insulating material has a plate-like shape including two mutually facing side surfaces;
The heat insulating body according to claim 1, wherein the sealing layer is provided on at least one of the two side surfaces facing each other. The insulation includes two opposing surfaces sandwiching the two opposing sides;
The heat insulating body according to claim 3, wherein a plate-like protective material is provided on at least one of the two opposing surfaces. A plate-like protective material is provided on each of the two facing surfaces,
5. The seal layer according to claim 4, wherein a part of the seal layer is sandwiched between the plate-shaped protective materials, and the seal layer is provided so that the remaining portion of the seal layer protrudes from the plate-shaped protective material. Insulation. A counter structure of a heat insulator using at least two heat insulators according to claim 1,
At least a part of the two heat insulators composed of one heat insulator and another heat insulator is disposed adjacent to each other;
The opposing structure of a heat insulator, wherein the seal layer provided on the one heat insulator is disposed between the one heat insulator and the other heat insulator. The sealing layer is provided on the side surface of the one heat insulating material;
The opposing structure of the heat insulating body according to claim 6, wherein the seal layer provided on the side surface of the one heat insulating material is disposed between the one heat insulating body and the other heat insulating body. A heat insulating container comprising the heat insulator according to claim 1,
An outer surface made of a deformable material and defining an outer shape;
A plurality of heat insulators housed inside the outer surface material,
The heat insulation container, wherein the plurality of heat insulators can be used in a state of being assembled and used as a container inside the outer surface material, and a storage state in which the heat insulators are laid on each other. The plurality of heat insulators is composed of six heat insulators,
Each of the six heat insulators has a plate shape,
In the use state, a hexahedron is formed by the six heat insulators,
The heat insulating container according to claim 8, wherein each of the plurality of heat insulators is assembled as a corresponding wall surface of the hexahedron.   When the hexahedron is formed, the seal layer provided on one of the heat insulators at least partially adjacent to each other is adjacent to the one heat insulator and the one heat insulator. The heat insulation container according to claim 9 arranged between other heat insulators.   When the one heat insulator and the other heat insulator are adjacent to each other, the one heat insulator is changed to the other when the state changes from the use state to the storage state or from the storage state to the use state. The heat insulating container according to claim 10, which is a portion that slides with respect to the heat insulator.   The heat retaining container according to claim 9, wherein each of an inner surface of the outer surface material and a surface of the heat insulator is provided with engaging members having different sexes capable of engaging with each other in the use state. .

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