JP2012112113A - Heat insulation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation panel which allows fixing strength to a fitting object to be enhanced without impairing heat insulation.SOLUTION: A heat insulation panel 1 accommodates a plurality of vacuum insulation bodies 15 spaced apart from each other in one direction, including a surface part corresponding to a position between the vacuum insulation bodies, which is provided with a plate base material 10 having a concave groove part 12 arranged along another direction to which a fastener 3 to fasten to a fitting object 2 is fastened, and a rod-shaped insulation body 20 which is fitted in the concave groove part.

Description

  The present invention relates to a heat insulating panel used for a structure such as a house, a cold storage, a heat storage, or the like.

As a heat insulating member used for structures such as houses, cold storage, and heat storage, vacuum suction is performed by covering the core with a gas barrier packaging material from the viewpoint of reducing the thickness and improving the heat insulating efficiency. A heat insulation panel containing a vacuum heat insulator formed by doing so is known.
In order to firmly fix a heat insulating panel containing such a vacuum heat insulating body to an object to be attached, it is conceivable to fix the heat insulating panel using a fixing stopper such as a nail, a screw, or a tucker. In the case of such an attachment structure, there is a problem that the packaging material of the vacuum heat insulator is damaged depending on the fixing portion of the fixing stopper, and the heat insulating performance is impaired.
In the following Patent Document 1, a heat insulating panel is proposed in which a vacuum heat insulating body is disposed between face members, and a place where a joining component such as a nail or a screw is attached is specified on the face member. According to this heat insulation panel, damage to the packaging material of the vacuum heat insulating body due to joining parts such as nails or screws could be prevented.

JP 2000-248653 A

  However, in the heat insulation panel described in Patent Document 1, when fixed to an attachment target, a joining component such as a nail or a screw becomes a heat bridge along the thickness direction of the heat insulation panel (heat bridge), and the heat insulation property. As a result, it was thought that this would be damaged, and further improvement was desired.

  This invention is made | formed in view of the said situation, and it aims at providing the heat insulation panel which can improve the attachment intensity | strength to an attachment object, without impairing heat insulation.

  In order to achieve the above-mentioned object, the heat insulation panel according to the present invention accommodates a plurality of vacuum heat insulators at intervals in one direction, and is fixed to an attachment target at a surface portion corresponding to the space between the vacuum heat insulators. It is characterized by comprising a plate-like base material provided with a concave groove portion to be fixed to the fixed stopper along the other direction, and a rod-like heat insulator fitted into the concave groove portion.

In this invention, it is good also as what further provided the temporary holder which temporarily hold | maintains the said rod-shaped heat insulating body so that it may be along the side of the ditch | groove part of the said plate-shaped base material.
In the present invention, a plurality of fixed stopper holes may be formed through the concave groove portion in the thickness direction of the plate-like substrate at intervals along the other direction.
Moreover, in this invention, it is good also as a structure which laminated | stacked the plate-shaped base material on the surface material which provided the said ditch | groove part, and the hard resin foam accommodated so that the said vacuum heat insulating body might be wrapped.

  Since the heat insulation panel according to the present invention is configured as described above, it is possible to improve the attachment strength to the attachment object without impairing the heat insulation.

(A), (b) shows typically an example of the heat insulation panel which concerns on one Embodiment of this invention, (a) is a schematic front view, (b) is XX in (a). It is a schematic cross-sectional view corresponding to the line arrow. (A) is a schematic perspective view of the said heat insulation panel, (b) is a schematic perspective view which shows typically an example of the vacuum heat insulating body with which the heat insulation panel is provided. (A)-(e) is explanatory drawing for demonstrating an example of the attachment structure of the both heat insulation panel, (a), (d) is each made to respond | correspond to the Z section in Fig.2 (a), respectively. The partially broken schematic enlarged perspective view, (b), (c), and (e) are partially broken schematic enlarged transverse sectional views respectively corresponding to the Y part in FIG. 1 (b).

Embodiments of the present invention will be described below with reference to the drawings.
FIGS. 1-3 is a conceptual explanatory drawing for demonstrating an example of the heat insulation panel which concerns on this embodiment, and its attachment structure.
The heat insulation panel 1 which concerns on this embodiment is provided with the plate-shaped base material 10 made into the substantially rectangular flat plate shape, and the elongate rod-shaped rod-shaped heat insulating body 20, as shown to FIG.1 and FIG.2 (a).
In the illustrated example, the plate-like base material 10 having a substantially rectangular shape when viewed from the front is illustrated, but may be a substantially square shape.

The plate-like base material 10 accommodates a plurality of vacuum heat insulators 15 at intervals in one direction (in the example shown, the width direction (lateral direction)), and the other surface portion corresponding to the space between the vacuum heat insulators 15 is placed in the other direction. A long concave groove 12 is provided along the longitudinal direction (longitudinal direction in the figure). Although details will be described later, the bar-shaped heat insulator 20 is fitted in the groove 12.
In the present embodiment, the plate-like base material 10 is accommodated so as to enclose the surface material 11 provided with the concave groove portion 12 and the vacuum heat insulating body 15 as shown in FIGS. 1B and 2A. The hard resin foam 13 is laminated.
In the present embodiment, as shown in FIG. 1, the hard resin foam 13 accommodates a plurality of cellular vacuum heat insulators 15 at intervals in the vertical and horizontal directions, and has a panel shape. In the illustrated example, three rows of cellular vacuum heat insulators 15 are accommodated in the horizontal direction and four rows are accommodated in the vertical direction.

  As shown in FIG. 2B, the plurality of cellular vacuum heat insulators 15 are connected to each other via a connection seal portion 16 to form a vacuum heat insulation unit 14 corresponding to the shape of the heat insulation panel 1. is doing. The plurality of cellular vacuum heat insulators 15 are made of porous urethane foam, powder such as silica, or fiber such as glass fiber, and the core material is a non-woven fabric having gas permeability and a gas barrier metal film. It may be formed by packaging with a wrapping material such as and vacuum suction. Moreover, it is good also as an aspect which comprises the connection seal | sticker part 16 by a part of packaging material. For example, a sheet-like member serving as a packaging material having gas barrier properties is arranged on the front and back sides of the plurality of cellular vacuum heat insulators 15 and vacuum suction is performed. The vacuum heat insulating unit 14 may be formed by heat welding. As such a sheet-like member, a plastic laminate film made of polyethylene resin, polypropylene resin or the like thermally welded to the inner layer side, and a metal film having a gas barrier aluminum foil, an aluminum vapor deposition layer or the like on the outer layer side. It is good also as what laminated | stacked. Or it is good also as an aspect which connects the cellular vacuum heat insulating bodies 15 with the separate connection seal | sticker part 16. FIG.

For example, the hard resin foam 13 containing the vacuum heat insulating unit 14 having the above-described configuration may be integrally molded with the vacuum heat insulating unit 14 when the hard foam resin is foam-molded. As described above, since the plurality of cellular vacuum heat insulators 15 are connected via the connecting seal portion 16 to form the vacuum heat insulating unit 14, the positioning at the time of composite molding can be easily performed, and the composite molding is performed with high accuracy. be able to. Or it changes to such a shaping | molding aspect, and foam-molds the board-like hard resin foam of the front and back which has a vacuum heat insulating body (or vacuum heat insulation unit) accommodation recessed part inside, respectively. And after foam-molding these, the vacuum heat insulating body 15 (or vacuum heat-insulation unit 14) may be accommodated in an accommodation recess, and these board-shaped hard resin foams may be bonded together and shape | molded.
In addition, you may make it form this hard resin foam 13 from various foam type | system | group (foaming type) materials, such as a polystyrene foam (foaming PS) and a hard urethane foam.

  The surface material 11 is made of a thin wooden board such as plywood or LVL, a wooden board such as particle board, a wooden fiber board such as insulation board or MDF (medium density fiber board), or a solid material such as solid wood. It may be formed in a flat plate shape. Or it is not restricted to what was formed from the woody material, It is good also as what was formed from inorganic materials, synthetic resin materials, etc., such as a gypsum board. Furthermore, it is good also as what was formed from the kenaf board which added the synthetic resin-type adhesive agent etc. as a binder to the fibrillated kenaf long fiber, and was boarded. Moreover, it is good also as what was formed from the composite material which mixed thru | or laminated | stacked these various materials.

As shown in FIG. 1 and FIG. 2A, a plurality of long (four in the illustrated example) concave groove portions 12... Are provided at intervals.
These concave groove portions 12 are provided at positions that do not overlap with the cellular vacuum heat insulator 15 accommodated in the hard resin foam 13 in the thickness direction as described above. That is, it is provided in the surface part corresponding to the connection seal | sticker part 16 (FIG. 2) along the vertical direction which connects between the cellular vacuum heat insulating bodies 15 accommodated at intervals in the horizontal direction. Further, in the present embodiment, in addition to the surface portions corresponding to the plurality of cellular vacuum heat insulators 15, the groove portions 12 and 12 are also provided in the surface portions at both lateral ends of the surface material 11. Yes.
As shown in FIG. 1A, these concave groove portions 12 have substantially the entire length in the longitudinal direction of the surface material 11 such that both end portions in the longitudinal direction are slightly recessed from both end surfaces in the longitudinal direction of the surface material 11. Are provided. In addition, you may make it provide these recessed groove parts 12 over the full length of the longitudinal direction of the surface material 11. FIG. Further, these concave groove portions 12 may be formed by cutting or the like, or may be formed in the step of forming the surface material 11 into a board.

Further, a plurality (five in the illustrated example) of fixing stopper holes 17 are provided in the concave groove portions 12 at intervals along the longitudinal direction (longitudinal direction) of the concave groove portions 12. It is formed penetrating in the thickness direction. In the illustrated example, the fixing stopper hole 17 corresponds to each of the longitudinal end portions of each concave groove portion 12 and the portion between the cellular vacuum heat insulators 15 spaced apart in the vertical direction as described above. Are provided with each of them. That is, the fixing stopper hole 17 is provided in each of the longitudinal direction both ends of each concave groove part 12, and each site | part in which the connection seal | sticker part 16 which connects the cellular vacuum heat insulating body 15 to a vertical direction exists. . In addition, the formation place of these fixed fastener holes 17 is not restricted to the place of the example of a figure, You may make it form in an appropriate place.
Further, as shown in FIGS. 3B and 3C, these fixed fastener holes 17 have a large diameter portion 17a on the surface side. The large-diameter portion 17a serves as a stopper head housing recess 17a that houses the head of the fixed stopper 3 such as a bolt, a wood screw, or a nail.

3A and 3B, the rod-shaped heat insulator 20 fitted into the groove portion 12 of the plate-like substrate 10 has a prismatic shape as shown in FIGS. 3 (a) and 3 (b). . The length and width dimensions of the rod-shaped heat insulator 20 may be dimensions that can be fitted into the groove 12, and may be substantially the same as or slightly smaller than the length and width of the groove 12. Moreover, in this embodiment, since the fixed fastener hole 17 having the fastener head housing recess 17a is provided as described above, the thickness dimension of the rod-shaped heat insulator 20 is set to the depth of the groove 12. It is good also as a dimension substantially the same as a dimension, or a slightly smaller dimension than this.
As this rod-shaped heat insulator 20, various foam-based (foam-based) materials such as polystyrene foam (foamed PS) and rigid urethane foam as described above, or fiber-based heat insulating materials such as rock wool and glass wool were processed into a prismatic rod shape. It may be a thing.

Moreover, in this embodiment, as shown in FIG.1 and FIG.2 (a), this rod-shaped heat insulating body 20 is along the side of each ditch | groove part 12 of the plate-shaped base material 10 (surface material 11). Temporarily held by a connecting rotary tape 18 and a temporary fixing tape 19 as temporary holders (see also FIG. 3). The coupled rotating tape 18 and the temporary fixing tape 19 are adhesive tapes.
As shown in FIG. 3 (b), the connecting rotary tape 18 connects the one outer side surface of the rod-like heat insulator 20 and the one inner side surface of the groove 12 over substantially the entire length in the longitudinal direction. Or it is stuck at intervals in the longitudinal direction. As shown in FIG. 3 (c), the connecting rotary tape 18 temporarily holds the rod-like heat insulator 20 and functions as a hinge means that is rotatably connected to the plate-like substrate 10. That is, in this embodiment, the rod-like heat insulator 20 is rotatable by the connecting rotary tape 18 with the surface side one edge portion and the vicinity of one groove edge portion of the recessed groove portion 12 in the fitted state as a rotation fulcrum. ing.

As shown in FIGS. 1A and 2A, the temporary fixing tape 19 is provided at both ends in the longitudinal direction of the rod-shaped heat insulator 20. As shown in FIG. 3A, the temporary fixing tape 19 is attached to the end of the rod-shaped heat insulator 20 in the longitudinal direction and the end surface of the plate-like base material 10 in the longitudinal direction. And functions as temporary fixing means.
Moreover, in this embodiment, the fixing tape 21 which fixes the rod-shaped heat insulating body 20 inserted in the concave groove part 12 is affixed on the surface in the state inserted in the concave groove part 12 of the rod-shaped heat insulating body 20.
The fixing tape 21 is an adhesive tape, and is attached so that one side in the width direction extends from the surface side edge on the side different from the rotation fulcrum of the rod-shaped heat insulator 20 as shown in FIG. As shown in FIG. 3B, a release paper 22 is attached to the extended portion.

Next, an example of the construction procedure of the mounting structure of the heat insulation panel 1 according to the present embodiment will be described.
First, as shown in FIG.1 (b) and FIG.3 (b), it arrange | positions so that the heat insulation panel 1 may be followed along construction base | substrates, such as the ceiling base | substrate 2 as attachment object. Next, the temporary fixing tape 19 attached to both ends in the longitudinal direction of the rod-shaped heat insulator 20 is removed, and the release paper 22 of the fixing tape 21 is peeled off (see FIGS. 3A and 3B). In this state, the rod-shaped heat insulator 20 is temporarily held by the connecting rotary tape 18 so as to be rotatable with respect to the plate-like base material 10 on the side of the concave groove portion 12. Further, as shown in FIG. 3C, the fixed stopper 3 is screwed into the ceiling base 2 so that the fixed stopper 3 is inserted into the fixed stopper hole 17 provided in the plate-like base material 10. , Type in and fasten. In this state, the head of the fixed stopper 3 is housed in the fastener head housing recess 17 a of the fixed stopper hole 17.

  Next, as shown in FIG. 3 (c), the rod-shaped heat insulator 20 is rotated around the rotation fulcrum, and is fitted into the recessed groove portion 12 as shown in FIGS. The above-mentioned extending part is adhered to the surface of the plate-like substrate 10 (surface material 11). Thereby, the rod-shaped heat insulator 20 is fitted into the groove 12 and is fixed to the plate-like substrate 10. In addition, as a fixing means with respect to the plate-shaped base material 10 of this rod-shaped heat insulating body 20, you may make it fix using an adhesive agent, a tucker, a staple, etc. in addition to said each tape 18 and 21. FIG.

In addition, you may make it fix the fixing stopper 3 in all the locations of the fixing stopper hole 17 provided in the plate-shaped base material 10, the magnitude | size of the said heat insulation panel 1, the fastener holding strength of the ceiling base 2, etc. In consideration of the above, the fixed stopper 3 may be fixed to some of the plurality of fixed stopper holes 17.
Moreover, as the ceiling foundation | substrate 2 as a construction foundation | substrate to which the said heat insulation panel 1 is fixed, it is good also as a field edge. Further, the construction foundation is not limited to the ceiling foundation 2, and may be a wall foundation such as a trunk edge, a crosspiece member, an intermediate pillar, a through pillar, and an outer wall material. Or, in a building such as a reinforced concrete structure, when it is a straight wall or a direct ceiling finish, the finished surface may be a construction base. In this case, a fixing stopper such as an anchor bolt (plug) for concrete may be employed as appropriate.

Furthermore, it is good also as an aspect which constructs the heat insulation panel 1 which concerns on this embodiment post-construction by using an existing ceiling material, wall material, etc. as a construction foundation.
Further, the construction foundation is not limited to the ceiling foundation 2 or the wall foundation, but a floor foundation, a roof foundation, or the like may be used as the construction foundation. Furthermore, the attachment target of the heat insulation panel 1 is not limited to the construction base in such a residence, but may be another structure such as a cold storage or a heat storage.
Moreover, after constructing the heat insulating panel 1 as described above, a ceiling finishing material, a wall finishing material, or the like is appropriately applied to the indoor-side surface of the heat insulating panel 1 (the surface material 11 and the surface of the bar-shaped heat insulator 20). Or a synthetic resin decorative sheet, decorative paper, cloth paper, or the like may be pasted or painted to perform the finishing process.

According to the heat insulation panel 1 according to the present embodiment configured as described above, the attachment strength to the attachment object 2 can be improved without impairing the heat insulation.
That is, since the concave groove portion 12 which is a fixing portion of the fixing stopper 3 for fixing to the attachment object 2 is provided on the surface portion of the plate-like base material 10 corresponding to the space between the cellular vacuum heat insulators 15. The fixed stopper 3 can be inserted into, screwed into, or driven into the groove portion 12. Therefore, it is possible to prevent the packaging material of the cellular vacuum heat insulator 15 from being damaged by the fixing stopper 3 and to improve the attachment strength to the attachment object 2 while preventing the heat insulation from being impaired. Can do.
Moreover, since the rod-shaped heat insulator 20 fitted in the concave groove portion 12 is provided, the rod-shaped heat insulator 20 is fixed by the rod-shaped heat insulator 20 by fitting the rod-shaped heat insulator 20 into the concave groove portion 12 after the fixing stopper 3 is fixed. Heat transfer along the thickness direction through the tool 3 can be cut off or reduced. Therefore, heat insulation can be improved more.

Moreover, in this embodiment, since the temporary holders 18 and 19 which temporarily hold | maintain the rod-shaped heat insulating body 20 so that it may be along the side of the ditch | groove part 12 of the plate-shaped base material 10, it is easy to handle. In addition, after fixing the fixing stopper 3 to the concave groove portion 12, forgetting to fit the rod-shaped heat insulator 20 into the concave groove portion 12 can be prevented.
Furthermore, in this embodiment, since the connection rotation tape 18 which functions as a hinge means as described above is provided as a temporary holder, workability when the rod-shaped heat insulator 20 is fitted into the recessed groove portion 12 can be improved. it can. In addition, since the temporary fixing tape 19 as a temporary fixing means is provided, the rotation of the rod-like heat insulator 20 that is rotatable by the connecting rotary tape 18 can be prevented.

Furthermore, in the present embodiment, a plurality of fixed fastener holes 17 are formed in the groove portion 12 of the plate-like base material 10 at intervals along the longitudinal direction of the groove portion 12. It penetrates in the direction. Accordingly, the fixed fastener 3 can be clarified by the fixed fastener holes 17 and workability when fixing the fixed fastener 3 can be improved.
In the present embodiment, since the fastener head receiving recess 17 a is provided in the fixed fastener hole 17, after fixing the fixed fastener 3, the head of the fixed fastener 3 is the bottom surface of the concave groove portion 12. Can be prevented from protruding from. Therefore, the rod-shaped heat insulator 20 can be stably fitted and accommodated in the recessed groove portion 12.

  Furthermore, in this embodiment, the plate-like base material 10 has a structure in which the surface material 11 provided with the concave groove portion 12 and the hard resin foam 13 accommodated so as to wrap the cellular vacuum heat insulator 15 are laminated. Therefore, heat insulation can be improved more. Moreover, although the heat insulation property can be improved, the holding strength of the fixed stopper 3 can be improved by the surface material 11 provided with the concave groove portion 12 on the surface side.

In addition, in this embodiment, although the plate-shaped base material 10 (hard resin foam 13) which accommodated the several cell-like vacuum heat insulating body 15 in the vertical and horizontal direction at intervals in the vertical direction and the horizontal direction is illustrated, the horizontal It is good also as what accommodated the several cell-shaped vacuum heat insulating body 15 at intervals only in the direction (width direction).
Moreover, in this embodiment, the example which made the plate-shaped base material 10 (hard resin foam 13) accommodate the vacuum heat insulation unit 14 which connected between the several cell-shaped vacuum heat insulators 15 by the connection sealing part 16 was demonstrated. However, it is good also as an aspect which accommodates the several vacuum heat insulating body 15 formed by division.
Furthermore, in this embodiment, although the plate-shaped base material 10 (hard resin foam 13) which accommodated three rows of vacuum heat insulating bodies 15 at intervals in the horizontal direction is illustrated, it is illustrated in the horizontal direction (width direction). It is good also as what accommodated the vacuum heat insulating body 15 of at least 2 rows at intervals. Or it is good also as what accommodated the vacuum heat insulating body 15 at intervals in the longitudinal direction. In this case, a long concave groove 12 along the width direction may be provided at a surface portion corresponding to the space between the vacuum heat insulators 15.

Moreover, the recessed groove part 12 formed in the surface site | part of the plate-shaped base material 10 (surface material 11) is a vacuum heat insulating body accommodated at intervals in one direction (horizontal direction or vertical direction) like this embodiment. It may be provided in all of the parts corresponding to 15 or only in some of them.
Furthermore, in this embodiment, although the example which provided the fixed fastener hole 17 in the recessed groove part 12 provided in the plate-shaped base material 10 (surface material 11) is shown, such a fixed fastener hole is not provided. You may do it. Also by this, the fixing stopper 3 can be fixed using the concave groove part 12 without damaging the packaging material of the vacuum heat insulating body 15. In this case, a two-stage shape in which a groove is further formed in the bottom of the groove 12 so that the head of the fixed stopper 3 can be received may be used. Or you may make it make the thickness dimension of the rod-shaped heat insulating body 20 smaller than the depth dimension of the recessed groove part 12 so that the back surface of the rod-shaped heat insulating body 20 and the head of the fixed stopper 3 may not interfere.
Furthermore, a chamfered portion may be provided at a diagonal edge portion of the rotation fulcrum of the rod-shaped heat insulator 20. According to this, when the rod-shaped heat insulating body 20 is rotated as described above and fitted into the groove portion 12, it can be smoothly fitted.

  Moreover, in this embodiment, although the plate-shaped base material 10 which laminated | stacked the surface material 11 which provided the recessed groove part 12, and the hard resin foam 13 which accommodated the vacuum heat insulating body 15 is illustrated, in such an aspect. Not limited. For example, it is good also as a plate-shaped base material which laminated | stacked the back surface material further. Or it is good also as what consists only of the hard resin foam 13 accommodated so that the vacuum heat insulating body 15 may be wrapped, without laminating | stacking such a face material. In this case, the groove 12 may be provided in the hard resin foam 13. Furthermore, as a flash-panel-like plate-like base material having a structure in which a prismatic crosspiece is arranged between flat plate-like front and back surface members, and a vacuum heat insulator 15 is accommodated in a space partitioned by them. Good.

Moreover, although this embodiment demonstrated the example which provided the fixing tape 21 which fixes the rod-shaped heat insulating body 20, without providing such a fixing tape 21, the rod-shaped heat insulating body 20 by other fixing means as mentioned above. It is good also as an aspect which engage | inserts and fixes to the recessed groove part 12. FIG.
Furthermore, in the present embodiment, an example in which the connecting rotary tape 18 and the temporary fixing tape 19 are provided as a temporary holder that temporarily holds the rod-shaped heat insulator 20 so as to be along the side of the concave groove portion 12 has been described. It is good also as an aspect which provided only one of these. Or it is not restricted to such a temporary holder, You may make it employ | adopt another temporary holder. Furthermore, such a temporary holder may not be provided.

1 Insulation panel 2 Ceiling base (attachment target)
DESCRIPTION OF SYMBOLS 3 Fixing fixture 10 Plate-shaped base material 11 Surface material 12 Concave groove part 13 Hard resin foam 15 Cell-shaped vacuum heat insulating body (vacuum heat insulating body)
17 Fixed stop hole 18 Linked rotating tape (temporary holder)
19 Temporary fixing tape (temporary holder)
20 Bar insulator

Claims (4)

A plurality of vacuum heat insulators are accommodated at intervals in one direction, and a concave groove portion to be a fixing portion of a fixing stopper for fixing to a mounting target is provided in the other direction on a surface portion corresponding to the space between the vacuum heat insulators. A plate-like base material provided along,
A rod-like heat insulator fitted into the groove,
Insulating panel characterized by comprising. In claim 1,
The heat insulation panel characterized by further providing the temporary holder which temporarily hold | maintains the said rod-shaped heat insulating body so that it may go along the side of the ditch | groove part of the said plate-shaped base material. In claim 1 or 2,
The heat insulation panel, wherein a plurality of fixing stopper holes are formed through the concave groove portion in the thickness direction of the plate-like substrate at intervals along the other direction. In any one of Claims 1 thru | or 3,
The said plate-shaped base material is made into the structure which laminated | stacked the surface material which provided the said recessed groove part, and the hard resin foam accommodated so that the said vacuum heat insulating body might be wrapped.

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