JP6508628B2 - Thermal insulation panel - Google Patents

Description

  The present invention relates to a heat insulating panel having a vacuum heat insulating material, the periphery of which is filled with a foam.

  Various conventional heat insulation panels of this type have been proposed (see, for example, Patent Document 1).

  Since the heat insulation panel of this type is internally provided so that the vacuum heat insulating material is surrounded by the foam material, spring back of the vacuum heat insulating material may occur due to the foaming pressure of the foam material. Therefore, unevenness may occur on the front and back surfaces of the panel. If the front and back surfaces of the panel have irregularities, not only the appearance is bad, but if the smoothness of the front and back surfaces is impaired, it may be difficult to install in a location where dimensional accuracy is required.

  The heat insulation panel described in Patent Document 1 is formed by arranging a vacuum heat insulating material in a recess formed in advance in a foam, and covering the foam with another foam. That is, since the vacuum heat insulating material is disposed in the concave portion formed in advance, there is no possibility that the front and back surfaces (upper and lower surfaces) are uneven.

JP, 2009-236183, A

  However, the heat insulation panel of Patent Document 1 has a special structure and a special manufacturing method, and may have a manufacturing cost. In addition, if a concave portion with high dimensional accuracy is not formed, the vacuum heat insulating material can not be properly installed, which may result in manufacturing failure.

  The present invention has been proposed in consideration of such circumstances, and the purpose thereof is unevenness of the upper and lower surfaces due to the vacuum heat insulating material and the foam material which can be easily manufactured without too much manufacturing cost. To provide an insulation panel excellent in smoothness.

  In order to achieve the above object, in the heat insulating panel of the present invention, a vacuum heat insulating material is disposed on a bottom plate via a buffer material opened in the thickness direction, and a foam material is provided around the vacuum heat insulating material. , And the upper surface of the foam material is covered with a lid through a tensile material.

  According to the heat insulation panel of the present invention, since it has the above-mentioned configuration, it is possible to reduce the occurrence of unevenness on the front and back surfaces (upper and lower surfaces) caused by the vacuum heat insulating material and the foam material, and to secure smoothness.

It is a longitudinal cross-sectional view of the heat insulation panel which concerns on one Embodiment of this invention. It is a partially expanded perspective view of the shock absorbing material used for a heat insulation panel. It is a longitudinal cross-sectional view of the heat insulation panel which concerns on other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described based on the attached drawings.

  As shown to FIG. 1, FIG. 3, the heat insulation panel 10 which concerns on the following embodiment has the following internal structures. A vacuum heat insulating material 13 is disposed on the bottom plate 11 with a buffer material 12 opened in the thickness direction. A foam material 14 is filled around the vacuum heat insulating material 13. The upper surface of the foam material 14 is covered with the lid 16 via the tensile material 15.

  The exposed surface (the lower surface in FIG. 1) of the bottom plate 11 is one of the front and back surfaces of the heat insulating panel 10, and the exposed surface of the lid 16 (the upper surface in FIG. 1) is the other surface. In the method of manufacturing the heat insulating panel 10, for example, the bottom plate 11 is placed on a mounting table or the like, the buffer material 12 and the vacuum heat insulating material 13 are placed on the bottom plate 11, and the foam material 14 is filled in the periphery thereof. , The procedure of installing the tensile material 15 and the lid 16 on it. In the present specification and claims, the front and back of the heat insulation panel 10 are not defined, and the upper and lower sides in the above manufacturing method are defined and described as the upper and lower sides of the heat insulation panel 10. That is, in the present specification and the like, it is determined that the bottom plate 11 side is lower and the lid 16 side is upper.

  In addition, although this heat insulation panel 10 is used as an interior construction material for a floor, a wall, etc., any exposed surface of bottom board material 11 and lid 16 can also be installed towards the indoor side.

  Further, the tensile material 15 is a material having high resistance to a tensile force, and in the following embodiment, a glass net in which glass fibers are twisted in a thread shape and woven in a net shape is used as the tensile material 15 Materials may be used.

  First, the details of the first embodiment will be described with reference to FIGS. 1 and 2.

  As described above, the heat insulating panel 10 includes the bottom plate 11, the shock absorbing material 12, the vacuum heat insulating material 13, the foam material 14, the tensile material 15, and the lid 16.

  In the heat insulating panel 10, a magnesium silicate board is used as the bottom plate 11. It is desirable to use the bottom plate 11 having a thickness of 0.5 mm to 2 mm. For example, 1 mm thick "GX" manufactured by Taigalex Co., Ltd. can be used.

  In the past, thermal insulation panel materials in which the bottom plate 11 was made of aluminum kraft paper were also produced, but since the magnesium silicate board has a hardness and strength sufficiently higher than that of the aluminum kraft paper, the vacuum insulation material embedded Suitable for 13 protection.

  In the thermal insulation panel 10, although the vacuum thermal insulation material 13 depends on the amount of the foam material 14, the vacuum thermal insulation material 13 is particularly disposed because it is disposed at a position close to the lower surface of the panel as illustrated. There is a need for enhanced protection of the underside of In this embodiment, a magnesium silicate board which is thicker and harder than an aluminum sheet or aluminum kraft paper is used as the bottom plate 11, which is safe.

Moreover, if it is a magnesium-silicate board about the said thickness, the heat insulation panel 10 does not become heavy, and workability does not fall. For example, if the specific gravity is 0.8 and the thickness is 1 mm, the unit weight is 800 g / m ^2, which is a sufficiently acceptable numerical value. The allowable upper limit is 1600 g / m ² .

  Moreover, since the magnesium silicate board is a non-combustible material, it can be suitably used as an interior building material.

  A shock absorbing material 12 is disposed on the bottom plate 11. The shock absorbing material 12 is plate-like, and has a shape and structure as shown in FIG.

  That is, as shown in FIG. 2, the cushioning material 12 is formed into a plate shape by arranging a plurality of rod-like (cylindrical) rod-like foams 12a regularly so that the cut surfaces face up and down. Between the rod-like foams 12a, there are openings (gaps) in the form of hollows 12b communicating vertically.

  Such a plate-like body may be thinly cut and formed by using a mold (not shown) in which a large number of round holes are formed adjacent to each other.

  As a material of the buffer material 12, for example, a polyolefin resin containing cellulose and starch is used. More specifically, for example, a foamed material containing polypropylene, paper, starch is used. Moreover, what used polyvinyl chloride (polyvinyl chloride) instead of the polypropylene, and what used wood instead of paper may be used.

  The cushioning material 12 is preferably relatively flexible. Further, in the process of manufacturing the heat insulating panel 10, as shown in FIG. 1, the vacuum heat insulating material 13 is disposed on the shock absorbing material 12 and then the foam material 14 is filled. What absorbs the foaming pressure of is desirable.

  That is, as shown in FIG. 1, although the portion where the vacuum heat insulating material 13 is disposed is recessed due to the foaming pressure, the buffer material 12 is less elastic and plastically deformed, so that the pressure on the lower bottom plate 11 occurs. Hateful. Therefore, the possibility that the portion of the bottom plate 11 on which the vacuum heat insulating material 13 is installed bulges to the lower surface side is low. Moreover, since the shock absorbing material 12 has poor elasticity, the vacuum heat insulating material 13 is hardly pushed up.

  Further, since the buffer material 12 is opened in the thickness direction, the foam material 14 to be injected after the installation of the vacuum heat insulating material 13 penetrates downward through the opening (the cavity 12 b). Then, the cushioning material 12 and the bottom plate 11 are adhered to each other by the infiltrated foam material 14.

  As the cushioning material 12, in addition to the one shown in FIG. 2, a reticulated material used for anti-slip of a carpet or a coaster, or one having little elasticity such as a fruit net can be used.

  Also, the vacuum heat insulating material 13 is not particularly limited in the present embodiment, but for example, a material formed by covering a core material (not shown) with a gas barrier packaging material (not shown) and vacuum suctioning It can be used.

  As the core material, it is possible to use an open-celled urethane foam, a styrene foam, a foam such as a phenol foam or the like using a material having a relatively low thermal conductivity. Alternatively, the core material may be one obtained by pulverizing various foam materials, or one composed of powder particles such as silica, alumina or perlite, or one composed of a fiber body such as glass fiber, glass wool, rock wool or cellulose fiber. Good. Furthermore, the above-mentioned various foams, powders, and fibers may be mixed and used as a core material.

  Further, as the packaging material, a metal film having gas barrier properties may be used. Alternatively, a laminate is provided with a protective layer such as a resin film on the outer layer side, a gas barrier layer such as a metal film or a metal deposition layer in the middle, and a thermal adhesion layer such as a resin film having thermal adhesion on the inner layer side (core material side) A film (sheet) may be used as a packaging material.

  As the foam material 14 disposed around the vacuum heat insulating material 13, a synthetic resin such as urethane resin, polystyrene resin, polyethylene resin, or phenol resin contains a foaming agent, and if necessary, a curing agent, a flame retardant, etc. What foams a foamed resin is mentioned.

  In the present embodiment, a hard urethane foam is used as the foamed resin. As the rigid urethane foam, it is desirable to use a rigid isocyanurate foam excellent in flame retardancy.

  Further, as the foamed resin, a foamed rubber material or an inorganic foamed material using calcium carbonate or the like as a raw material may be used.

  As the tension member 15, a glass net obtained by twisting glass fibers into a thread and knitting in a net shape is used. Further, an aluminum sheet (aluminum foil) is used as the lid member 16. In the present embodiment, an aluminum glass cloth A in which a glass net and an aluminum sheet are adhered to each other is used.

  As aluminum glass cloth A, for example, ALGC (registered trademark) manufactured by Sanyo Barrier Co., Ltd. can be used. This aluminum glass cloth A is a combination of an aluminum foil (0.02 mm thick, JIS H4146) and a glass net (0.11 mm thick, JIS R3414-EP11E) with a water-soluble acrylic resin adhesive. is there. Of course, another one may be used as the aluminum glass cloth A.

  The glass net is excellent in dimensional stability, and in the present heat insulation panel 10, since this glass net is interposed between the foam material 14 and the lid 16, the foaming pressure of the foam 14 is applied to the surface of the lid 16. It is possible to suppress the occurrence of swelling.

  Further, since the aluminum glass cloth A in which the glass net (the tensile material 15) and the aluminum foil (the lid member 16) are integrated is used as in the present embodiment, the manufacturing labor can be reduced. Moreover, if roll-shaped aluminum glass cloth A is used, continuous production becomes possible.

  As described above, according to the heat insulating panel 10 according to the present embodiment, the generation of unevenness on the upper and lower surfaces of the panel due to the vacuum heat insulating material 13 and the foam material 14 can be reduced by the tensile material 15 and the buffer material 12 Smoothness can be secured. Further, since the heat insulation panel 10 uses an aluminum sheet as the lid 16, the thin heat insulation panel 10 can be formed.

  Next, the details of the second embodiment will be described with reference to FIG.

  The heat insulating panel 10 is the same as the heat insulating panel 10 according to the first embodiment, and the bottom plate 11, the shock absorbing material 12, the vacuum heat insulating material 13, the foam material 14, the tensile material 15, and the lid 16 And.

  The bottom plate 11, the shock absorbing material 12, the vacuum heat insulating material 13 and the foam material 14 which are constituent materials of the heat insulation panel 10 are the same as those described in the first embodiment (FIG. Reference) can be used. Therefore, the description about these is omitted.

  As the tensile material 15, a glass net obtained by twisting glass fibers into a thread and knitting in a net shape is used. Further, as the lid member 16, a foamed calcium carbonate board (calcium carbonate based foam plate) having a thickness of 5 mm is used.

  As the glass net, for example, "Kurenet" (registered trademark) manufactured by Kurashiki Spinning Co., Ltd., "glass woven fabric" (registered trademark) manufactured by Nitto Spinning Co., Ltd., etc. can be used.

  Glass nets are excellent in dimensional stability because they are made of glass fibers. In this heat insulation panel 10, since this glass net is interposed between the foam material 14 and the lid 16, it is possible to prevent the surface of the lid 16 from being expanded by the foaming pressure of the foam 14. In the present embodiment, a cloth-like molded article of glass fiber may be used instead of the glass net.

  As the foamed calcium carbonate board (5 mm thick) used for the lid 16, for example, "Rock Cell Board" (registered trademark) manufactured by Fuji Kasei Kogyo Co., Ltd. can be used.

Foamed calcium carbonate board is light weight (specific gravity of 0.07, 5 mm thick and 350 g / m ² ) and has good thermal insulation, non-combustibility, durability, and adhesiveness, so it should be suitably used as a constituent material of the thermal insulation panel Can. The foamed calcium carbonate board has a property of being flexible, but a somewhat thick one may be used as in the present embodiment, and one having a size of 3 mm to 10 mm is suitable.

  In addition, since the foamed calcium carbonate board is mounted on the foam material 14 via the glass net, it combines with the thickness of the foamed calcium carbonate board to suppress the occurrence of swelling due to the foaming pressure of the foam material 14 on the surface. can do.

  Further, in the present embodiment, since the lid member 16 is in the form of a board like the bottom plate 11, it can be produced by a batch method using a multistage press, and can be produced with relatively simple equipment.

  As mentioned above, according to the heat insulation panel 10 which concerns on this embodiment, the panel resulting from the vacuum heat insulating material 13 and the foam material 14 by the tension material 15 and the shock absorbing material 12 like the thing of 1st Embodiment. The occurrence of irregularities on the upper and lower surfaces can be reduced, and the smoothness can be ensured.

  Since all the heat insulation panels 10 demonstrated above are the structures which use a glass net | network as the tension material 15, a commercially available thing etc. can be simply obtained as a material and a manufacturing cost can be held down.

  Moreover, since the above two types of heat insulation panels 10 can be manufactured on the same manufacturing line as the conventional one and it is not necessary to adopt a special manufacturing method, the manufacturing can be easily performed without too much manufacturing cost. can do.

DESCRIPTION OF SYMBOLS 10 heat insulation panel 11 bottom board material 12 shock absorbing material 12a rod-shaped foam 12b cavity 13 vacuum heat insulating material 14 foam material 15 tensile material 16 lid material

Claims (5)

A vacuum heat insulating material is disposed on the bottom plate through a buffer material opened in the thickness direction,
A foam is filled around the vacuum heat insulating material,
The heat insulation panel characterized in that the upper surface of the foam material is covered with a lid through a tensile material. In claim 1,
The said tension material consists of glass net | network, The heat insulation panel characterized by the above-mentioned. In claim 1 or 2,
The said cover material consists of an aluminum sheet, The heat insulation panel characterized by the above-mentioned. In claim 1 or 2,
The said cover material consists of a foaming calcium carbonate board, The heat insulation panel characterized by the above-mentioned. In any one of claims 1 to 4,
The said bottom board material consists of a magnesium-silicate board 0.5 mm-2 mm in thickness, The heat insulation panel characterized by the above-mentioned.

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