JP2009019696A - Vacuum insulating material and building using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum insulating material capable of retaining a heat insulating effect over a long period. <P>SOLUTION: There is provided a vacuum insulating material 1 which includes a gas barrier outer covering material 6 having a thermally adhered layer and a plurality of core materials 5a and further is depressurized and hermetically sealed so that the plurality of the core materials 5a is positioned within an independent vacuum space separated by the thermally adhered layer 7 between the outer covering materials 6 where the thermally adhered layers are opposed to each other and furthermore the whole parts of at least a peripheral border of the core material 5a in the opposed thermally adhered layers are thermally adhered. In the vacuum insulating material 1, the core materials 5a are arranged on extended lines 8a, 8b, 8c, 8d, 8e, 8f and 8g of a folded line of the vacuum insulating material 1 formed between adjacent core materials 5a. As a result, the outer covering material 6 is imparted with rigidity in the thermally adhered portion 7 and besides the core materials 5a are arranged on the extended lines 8e, 8f and 8g of the folded line. Hence, the outer covering material 6 can be prevented from bending in the vicinity of the core materials 5a, thus reducing the number of a crack and a pin hole which are generated by inadvertently occurring bending of the vacuum insulating material 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vacuum heat insulating material that can maintain a heat insulating effect over a long period of time.

  In recent years, there has been an active movement to promote energy saving in houses as a countermeasure against global warming, which is a global environmental problem, and a heat insulating material having excellent heat insulating performance is demanded.

  At present, glass wool and urethane board are mainly used as heat insulating materials for houses, but in order to further save energy, it is desirable to apply a vacuum heat insulating material having excellent heat insulating performance. However, the conventional vacuum heat insulating material is one that seals under reduced pressure after inserting one core material into one bag-like exterior body, and considering this as a panel, the entire panel constitutes one room. For this reason, when fixing a vacuum heat insulating material with a nail or a screw, there is a problem that if the exterior body is damaged by mistake, the vacuum leaks and the heat insulating performance of the whole heat insulating material cannot be maintained. .

  In order to solve this problem, a vacuum heat insulating material in which a core material is enclosed in an outer cover material and is made of a sealing body in a low vacuum state, and the sealing body is divided into a plurality of rooms has been reported. (For example, refer to Patent Document 1).

  FIG. 9 is a cross-sectional view of a conventional vacuum heat insulating material described in Patent Document 1. In this vacuum heat insulating material 1, a plurality of core materials 2 are enclosed in a jacket material 3 in a low vacuum state, and a heat fusion part 4 is provided so that each core material 2 becomes an independent vacuum chamber. is there.

Thereby, since the cutting | disconnection between the core material 2 and the core material 2 is possible, the dimension adjustment of the vacuum heat insulating material 1 can be performed easily. Considering the vacuum heat insulating material 1 as one panel, even if a part of the vacuum leaks as a panel, the leak does not reach other parts, so the durability is improved, and the vacuum heat insulating material is nail. It can be fixed by a simple and inexpensive method.
Japanese Patent Laid-Open No. 7-139690

  However, in the configuration of Patent Document 1, when the vacuum heat insulating material 1 is divided into fine rooms, the rigidity of the entire panel is lost, and it becomes easy to bend with the covering material 3 between the adjacent core materials 2 acting as an action point. Construction is difficult with large vacuum heat insulating materials such as building materials. Further, if careless bending is repeated between the manufacture and construction of the vacuum heat insulating material 1, cracks and pinholes are generated in the jacket material 3, and the vacuum inside the jacket material 3 is maintained for a long time. It becomes difficult.

  The present invention solves the above-described conventional problems, improves workability, and maintains the heat insulation effect over a long period of time by suppressing the occurrence of cracks and pinholes due to inadvertent bending of the jacket material. An object of the present invention is to provide a vacuum insulating material that can be used.

  In order to achieve the above object, the vacuum heat insulating material of the present invention has a gas barrier outer covering material having a heat welding layer and a plurality of core materials, and the outer covering materials facing each other. The core material is sealed under reduced pressure so that the core material is located in an independent vacuum space separated by the heat welded portion, and the opposing heat weld layers are heat welded at least all of the peripheral edge portions of the core material. In the vacuum heat insulating material, the core material is disposed on an extension line of a fold line of the vacuum heat insulating material formed between the core material and the adjacent core material.

  The opposing heat-welding layers form a heat-welded portion to give the outer shell material rigidity, and the core material on the extension line of the bending line formed between the core material and another adjacent core material By arranging this, bending of the jacket material in the vicinity of the core material is prevented.

  Thereby, the crack and pinhole which generate | occur | produce by the careless bending of a vacuum heat insulating material reduce, and it becomes possible to maintain the heat insulation effect of a vacuum heat insulating material over a long term.

  Moreover, since rigidity arises in the whole vacuum heat insulating material, the workability | operativity as a building member improves.

  In the vacuum heat insulating material of the present invention, the opposing heat-welded layers form a heat-welded portion, thereby providing the rigidity of the jacket material and folding formed between the core material and another adjacent core material. By disposing the core material on the extension line of the bend line, bending of the jacket material in the vicinity of the core material is prevented, so that the workability is improved and the heat insulating effect can be maintained for a long time.

  The invention according to claim 1 has a gas barrier outer covering material having a heat welding layer and a plurality of core materials, and the core material is between the outer covering materials facing each other. In the vacuum heat insulating material, which is sealed under reduced pressure so as to be located in an independent vacuum space separated by a heat welded portion, and the opposite heat welded layers are heat welded at least all of the peripheral edge portion of the core material, the core A core material is disposed on an extension line of a fold line of a vacuum heat insulating material formed between a material and the adjacent core material.

  The opposing heat-welding layers form a heat-welded part to give the jacket material rigidity, and the core material is placed on the extension of the fold line formed between the core material and the adjacent core material. By doing so, it is possible to prevent the jacket material from being bent in the vicinity of the core material.

  Thereby, the crack and pinhole which generate | occur | produce by the careless bending of a vacuum heat insulating material reduce, and it becomes possible to maintain the heat insulation effect of a vacuum heat insulating material over a long term.

  Moreover, since rigidity arises in the whole vacuum heat insulating material, the workability | operativity as a building member improves.

  Here, the independent space refers to a state in which each space is separated via a heat welding portion. In addition, the method for forming the independent space is not particularly specified, but a method for forming a heat-welded portion by a conventionally known technique such as a high-frequency seal method or an ultrasonic seal method can be considered as a heat seal method or an impulse seal method. .

  Also, there is no particular designation as to the method of heat-sealing the peripheral portion, a method of heating the heat-welded layers pressed by the atmospheric pressure to the melting point of the heat-welded layer in a high-temperature atmosphere after sealing the core material under reduced pressure, A method of sealing the core material immediately after heating the jacket material to the melting point of the heat-welded layer in a reduced-pressure atmosphere is conceivable.

  Moreover, the shape of a core material can use the arbitrary shape which consists of a triangle, a quadrangle | tetragon, a polygon, a circle | round | yen, L type, or those combinations according to the location which requires heat insulation.

  Moreover, a fold line shows the line | wire produced when it bends by making into a point of action the heat welding part located between a core material and the other adjacent core material.

  Next, constituent materials of the vacuum heat insulating material will be described.

  As the laminate film used for the covering material, a film having an innermost layer as a heat welding layer, an intermediate layer having a metal foil or a metal vapor deposition layer as a gas barrier layer, and an outermost layer having a surface protective layer can be applied.

  In addition, although it does not specify in particular as a heat welding layer, thermoplastic resins, such as a low density polyethylene film, a linear low density polyethylene film, a high density polyethylene film, a polypropylene film, a polyacrylonitrile film, or those mixtures are used. it can.

  As the gas barrier layer, a metal foil such as an aluminum foil or a copper foil, a film obtained by evaporating metal atoms such as aluminum or copper on a polyethylene terephthalate film or an ethylene-vinyl alcohol copolymer, or the like can be used.

  Moreover, as a surface protective layer, conventionally well-known materials, such as a nylon film, a polyethylene terephthalate film, a polypropylene film, can be used.

  Although it is not particularly specified for the type of the core material, it is a porous body having a gas phase ratio of about 90% processed into a sheet shape or a plate shape, and an open cell body such as urethane foam, styrene foam, phenol foam, Conventionally known core materials such as fiber bodies such as glass wool, rock wool, alumina fibers, silica alumina fibers, and silica fibers, and powders such as pearlite, wet silica, and dry silica can be used.

  The invention according to claim 2 is the vacuum heat insulating material according to claim 1, wherein the core material is arranged so that it can be bent only in one direction. Since the folding direction of the vacuum heat insulating material is limited to one direction, it can be folded and stored, and the occurrence of cracks and pinholes caused by inadvertent bending other than the intended direction can be prevented in advance. Therefore, the heat insulating effect of the vacuum heat insulating material can be maintained for a long time.

  Invention of Claim 3 arrange | positions the core material of the same shape in the vacuum heat insulating material of Claim 1 or 2. Since the same shape of the core material is arranged, the vacuum heat insulating material can maintain its rigidity even if it is a vacuum heat insulating material whose end core material is cut by adjusting the dimensions. Cracks and pinholes generated in the jacket material due to an appropriate bending are reduced, and the heat insulating effect of the vacuum heat insulating material can be maintained over a long period of time.

  Invention of Claim 4 is a building using the vacuum heat insulating material as described in any one of Claim 1 to 3.

  By applying the vacuum heat insulating material of the present invention to walls, floors, and roofs, the heat insulation performance of the building is improved, and thus the heating and cooling costs can be saved, so that energy saving can be achieved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a plan view of the vacuum heat insulating material in Embodiment 1 of the present invention, and FIG. 2 is a cross-sectional view of the vacuum heat insulating material taken along line AA in FIG.

  In FIG. 1 and FIG. 2, a vacuum heat insulating material 1 is a core material 5a, 5b, 5c made of glass wool formed into 10 squares or L-shapes, and an outer cover material 6 made of a laminate film having gas barrier properties. And the inside of the jacket material 6 is decompressed, and heat is applied to all the peripheral portions of the core materials 5a, 5b, 5c so that each of the core materials 5a, 5b, 5c is located in an independent vacuum space. The welding part 7 is provided.

  In addition, between the other core materials 5a, 5b, 5c adjacent to the core materials 5a, 5b, 5c, extension lines 8a, 8b, 8c, 8d, 8e, 8f of bending lines (not shown) are respectively provided. 8g is formed, and the core members 5a, 5b, and 5c are arranged on the extension lines 8a, 8b, 8c, 8d, 8e, 8f, and 8g, respectively.

  As described above, the vacuum heat insulating material 1 according to the present embodiment tries to bend with the heat welding portion 7 of the jacket material 6 positioned between the adjacent core materials 5a, 5b, 5c as an action point. Since the core members 5a, 5b, and 5c are disposed on the extension lines 8a, 8b, 8c, 8d, 8e, 8f, and 8g, respectively, bending at the heat welding portion 7 can be prevented. Thereby, since the generation | occurrence | production of the crack and pinhole which generate | occur | produce by the careless bending of the vacuum heat insulating material 1 can be prevented beforehand, it becomes possible to maintain the heat insulation effect of the vacuum heat insulating material 1 over a long period of time.

(Embodiment 2)
FIG. 3 is a plan view of the vacuum heat insulating material according to Embodiment 2 of the present invention, and FIG. 4 is a cross-sectional view of the vacuum heat insulating material taken along line BB in FIG.

  3 and 4, the vacuum heat insulating material 1 is formed by covering the core materials 5 a and 5 b made of glass wool formed into 18 squares and having a thickness of 5 mm with a jacket material 6 made of a laminate film having gas barrier properties. The inside of the material 6 is depressurized, and the heat welding portion 7 is provided on all the peripheral portions of the core materials 5a and 5b so that each of the core materials 5a and 5b is located in an independent vacuum space. . Note that extension lines 8a, 8b, 8c, 8d, 8e, 8f, and 8g of fold lines (not shown) are formed between the other core materials 5a and 5b adjacent to the core materials 5a and 5b, respectively. The core members 5a and 5b are disposed on the extension lines 8e, 8f and 8g, respectively.

  As described above, the vacuum heat insulating material 1 according to the present embodiment tries to bend using the heat welded portion 7 of the jacket material 6 positioned between the adjacent core materials 5a and 5b as an action point. Since the core members 5a and 5b are disposed on the wires 8e, 8f, and 8g, respectively, bending at the heat welding portion 7 can be prevented. On the other hand, since the core members 5a and 5b are not arranged on the extension lines 8a, 8b, 8c and 8d, bending is possible. Thereby, since the folding direction of the vacuum heat insulating material 1 is limited to one direction, it can be folded and stored, and the occurrence of cracks and pinholes caused by inadvertent bending other than the intended direction is obviated. Since it can prevent, it becomes possible to maintain the heat insulation effect of the vacuum heat insulating material 1 over a long period of time.

(Embodiment 3)
FIG. 5 is a plan view of a vacuum heat insulating material according to Embodiment 3 of the present invention, and FIG. 6 is a cross-sectional view of the vacuum heat insulating material taken along line CC in FIG.

  5 and 6, the vacuum heat insulating material 1 covers a core material 5 a having a thickness of 5 mm made of glass wool formed in the same shape with a jacket material 6 made of a laminate film having gas barrier properties. The inside of 6 is decompressed, and the heat welding part 7 is provided on the entire peripheral edge of the core material 5a so that each of the core materials 5a is located in an independent vacuum space. Note that extension lines 8a, 8b, 8c, 8d, 8e, 8f, and 8g of bending lines (not shown) are formed between the other core members 5a adjacent to the core member 5a, and the extension line 8e. , 8f, 8g, the core material 5a is disposed.

  As described above, the vacuum heat insulating material 1 according to the present embodiment tries to bend with the heat welding portion 7 of the outer covering material 6 positioned between the adjacent core materials 5a as the action point, but each extension line 8e. , 8f, and 8g, the core material 5a is disposed on each of them, so that bending at the heat welding portion 7 can be prevented. On the other hand, since the core material 5a is not disposed on the extension lines 8a, 8b, 8c, and 8d, it can be bent.

  Thereby, since the folding direction of the vacuum heat insulating material 1 is limited to one direction, it can be folded and stored, and the occurrence of cracks and pinholes caused by inadvertent bending other than the intended direction is obviated. Since it can prevent, it becomes possible to maintain the heat insulation effect of the vacuum heat insulating material 1 over a long period of time. Further, even if the vacuum heat insulating material is divided in the vicinity of the extension lines 8e, 8f, and 8g for the purpose of dimension adjustment, the rigidity of the vacuum heat insulating material 1 can be maintained, and the outer cover can be formed by careless bending other than the intended direction. Since the generation of cracks and pinholes in the material 6 can be prevented in advance, the heat insulating effect of the vacuum heat insulating material 1 can be maintained over a long period of time.

(Embodiment 4)
FIG. 7 is a cross-sectional view of a building using the vacuum heat insulating material in Embodiment 4 of the present invention, and FIG. 8 is a cross-sectional view taken along the line DD of FIG.

  7 and 8, the building is filled with a fibrous heat insulating material 11 inside the frame composed of the wall material 9 and the pillar 10 without any gap, and a vacuum heat insulating material is provided between the wall material 9 on the indoor side and the interior material 12. 1 is fixed by a fixture 13.

  The operation | movement and effect | action are demonstrated below about the building comprised as mentioned above.

  First, the vacuum heat insulating material 1 forms the heat insulating part of a building with the fibrous heat insulating material 11.

  The wall material 9 forms a skeleton of the building together with the pillar 10.

  The interior material 12 serves to decorate the interior of the building and protect the surface of the vacuum heat insulating material 1.

  The fixing tool 13 plays a role of fixing the vacuum heat insulating material 1 to the surface of the wall material 9.

  In the building according to the present embodiment, in addition to the conventional wooden frame construction method that fills the fiber insulation between the frames composed of pillars, beams, etc., the vacuum insulation better than the fiber insulation This is an easy construction method for fixing 1 to a wall material on the indoor side.

  The vacuum heat insulating material according to the present invention is formed between the other core materials adjacent to the core material while providing the rigidity of the outer cover material by forming the heat-welded portions between the opposite heat-welded layers. By arranging the core material on the extension line of the bend line, bending of the jacket material in the vicinity of the core material is prevented, so cracks and pinholes generated in the jacket material due to inadvertent bending of the vacuum heat insulating material are prevented. Since the heat insulation effect of the vacuum insulation material can be maintained over a long period of time, a plurality of core materials such as a heat insulation material for a refrigerator, a heat insulation material for a house, a heat insulation wall for a cold insulation container, and a heat insulation material for an automobile are used. It can be applied to any place where vacuum insulation is required.

The top view of the vacuum heat insulating material in Embodiment 1 of this invention AA line sectional view of FIG. The top view of the vacuum heat insulating material in Embodiment 2 of this invention BB sectional view of FIG. The top view of the vacuum heat insulating material in Embodiment 3 of this invention CC sectional view of FIG. Sectional drawing of the building using the vacuum heat insulating material in Embodiment 4 of this invention DD sectional view of FIG. Cross section of conventional vacuum insulation

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum heat insulating material 5a, 5b, 5c Core material 6 Jacket | cover material 7 Thermal welding part 8a, 8b, 8c, 8d, 8e, 8f, 8g Extension line of a bending line

Claims (4)

  A gas barrier outer cover material having a thermal welding layer and a plurality of core materials, and the core material is separated by a thermal welding portion between the outer jacket materials facing each other. In a vacuum heat insulating material that is hermetically sealed under reduced pressure so as to be located in a vacuum space, and the opposing heat-welding layers are heat-welded at least all of the peripheral edge portions of the core material, it is formed between adjacent core materials. The vacuum heat insulating material which has arrange | positioned the said core material on the extension line | wire of the bending line of the said vacuum heat insulating material.   The vacuum heat insulating material according to claim 1, wherein a core material is arranged so that it can be bent only in one direction.   The vacuum heat insulating material of Claim 1 or 2 which has arrange | positioned the core material of the same shape.   The building using the vacuum heat insulating material as described in any one of Claim 1 to 3.