JP3814364B2 - Manufacturing method of heat insulation panel made of foam resin - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a heat insulating panel made of foamed resin, which is used when heat insulation with outside air is required, such as a cold insulation panel.
[0002]
[Prior art]
This type of general insulation panel made of foamed resin is made by bonding and fixing a film-like exterior material such as aluminum foil to the surface of a rigid insulation material made of foamed resin such as rigid urethane foam. As shown in FIG. 3, the heat insulation panel is made of a foamed resin hard heat insulating material 10 such as hard urethane foam which has been molded and cut into a required size and shape, and an adhesive 11 and a coating jig 12 such as a spatula. A foamed resin is obtained by spreading the film and applying it as uniformly as possible, then polymerizing a film-like exterior material 13 such as aluminum foil on the surface of the adhesive 11 and curing the adhesive 11 in a state of being pressed with a press or the like. It was a product in which the hard heat insulating material 10 and the film-shaped exterior material 13 were bonded and fixed.
[0003]
[Problems to be solved by the invention]
In the conventional foamed resin thermal insulation panel as described above, when the adhesive 11 is spread using the application jig 12 such as a spatula on the surface of the hard insulation material 10 made of foam resin, the application jig 12 such as the spatula is applied. Therefore, it is necessary to take sufficient care not to damage the hard heat insulating material 10, so that the workability of applying the adhesive is poor, and this is not only one factor for reducing the productivity of the panel, but also the adhesive. Therefore, it is difficult to apply the adhesive 11 evenly on the surface of the hard heat insulating material 10, and the application of the adhesive 11 is uneven and tends to be dense. In this way, in order to polymerize the film-shaped exterior material 13 while the application of the adhesive 11 is not uniform, a gas such as air is locally generated between the film-shaped exterior material 13 and the hard heat insulating material 10. Mixed. The locally mixed gas, such as air, does not escape during the curing of the adhesive 11 in the compressed state, and the adhesive 11 is cured, and as a result, the surface of the product (heat insulation panel) The film-like exterior material 13 is locally dotted with swelled portions, impairing the aesthetic appearance and lowering the product yield, and since the swelled portions are non-adhered portions due to the adhesive 11, When used as a panel or the like, there is a problem that a stress concentration portion is generated.
[0004]
The present invention has been made in view of the above circumstances, and not only can improve the workability of adhesive application, but also enables uniform application, and there is a non-uniform portion in the adhesive application. However, even if gas such as air is mixed there, a method of manufacturing a foamed resin heat insulation panel that can prevent the occurrence of local blistering as much as possible and achieve an improvement in appearance aesthetics. It is intended to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the method for producing a foamed resin thermal insulation panel according to the present invention is to apply an adhesive to at least the surface of the foamed resin thermal insulation, and overlay a film-like exterior material on the surface of the adhesive. In the manufacturing method of a foamed resin thermal insulation panel in which the foamed resin hard insulation material and the film-like exterior material are bonded and fixed by pressing together , an adhesive is roughly applied to the surface of the hard insulation material foam-molded in advance. After that, a cloth-like fiber material that can be impregnated with the adhesive and has air permeability is placed on the adhesive, and the adhesive that comes out on the cloth-like fiber material is applied using a spatula or other application jig. By spreading and spreading, the adhesive is uniformly applied to the entire surface of the hard resin foam insulation material, and the film heat insulation material and the film heat insulation material are laminated and pressed on the film heat insulation material. With materials Wear is characterized in that the fixing.
[0006]
According to the present invention having such a configuration, an adhesive is roughly applied to the surface of the hard heat insulating material, and then a cloth-like fiber material is placed thereon, and the cloth-like fiber material is adhered using a spatula or other application jig. Adhesive is applied to the entire surface of the hard insulation material with good workability because there is no risk of damaging the hard insulation material even if a strong force is applied to the application surface. It is possible to apply to. In addition, the adhesive is impregnated in the cloth-like fiber material at the time of application, and only the gas such as air mixed in the adhesive receives a strong spreading force by an application jig such as a spatula so that air permeability is obtained. It is easy to slip out to the outside of the periphery along a certain cloth-like fiber material, and this makes it possible to apply the adhesive more uniformly without any roughness. Further, even if a non-uniform portion is generated in the application of the adhesive and a gas such as air remains in the non-uniform portion, the residual gas is applied to the cloth-like fiber material during the curing of the adhesive in the compressed state. The film-like exterior material that forms the surface of the product panel after curing of the adhesive hardly swells locally, and the appearance of the product may be impaired. Absent.
[0007]
In the case of using an inorganic fiber material such as glass cloth or glass nonwoven fabric as the cloth fiber material used in the method for manufacturing the heat-insulating panel made of foamed resin having the above-described configuration, it is used in an adhesive or a hard material. In addition to the defoaming function to extract air and other gases mixed between the heat insulating material and the film exterior material to the outside of the periphery, it is possible to fully exert the reinforcing function when used under low and high temperature conditions. Become.
[0008]
Moreover, as a film-like exterior material used for the manufacturing method of the heat-insulating panel made of a foamed resin having the above-described configuration, a composite exterior material formed by laminating a polyester film, an aluminum foil, and a nonwoven fabric as described in claim 3 is used. In addition to a predetermined defoaming function, it has excellent performance in terms of tensile strength and stretchability with respect to temperature changes, and can also expand the application range of product panels such as cold insulation panels.
[0009]
The cloth-like fiber material and the film-like exterior material are not limited to those described above, and when considering only the defoaming function as the cloth-like fiber material, a non-woven fabric, soft polyurethane, or the like may be used. When considering use under conditions where the temperature change is extremely small as a film-like exterior material, a metal foil such as an aluminum foil or a stainless steel foil may be used alone.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal cross-sectional view of a foamed resin heat insulation panel according to the present invention. The foamed resin heat insulation panel is made of a foamed resin hard insulation material such as rigid urethane foam that has been molded into a required size and shape and cut out. 1 and a film-like exterior material 3 such as a composite exterior material formed by laminating a polyester film, an aluminum foil, and a nonwoven fabric, such as an adhesive 2 and a glass cloth or a glass nonwoven fabric between the opposing surfaces of both It can be impregnated with the adhesive 2 and is bonded and fixed by interposing an inorganic cloth fiber material 4 having air permeability.
[0011]
The said foaming resin heat insulation panel is specifically manufactured through the following processes and procedures. That is, as shown in FIG. 2, after roughly applying a predetermined amount of the adhesive 2 on the surface of the foamed hard insulating material 1, the inorganic cloth fiber material 4 is placed on the adhesive 2 and the cloth The adhesive fiber 2 is spread over the entire area using an application jig 5 such as a spatula while strongly pressing the adhesive 2 from above the fibrous material 4. When the adhesive 2 is spread, the adhesive 2 is gradually impregnated into the cloth-like fiber material 4, and a gas such as air contained in the adhesive 2 flows along the cloth-like fiber material 4. However, the adhesive 2 that still appears on the cloth-like fiber material 4 is further spread by the application jig 5 so that the adhesive 2 is removed from the surface of the hard insulating material 1 made of foamed resin. Apply evenly over the entire area.
[0012]
Thereafter, the film-shaped exterior material 3 is polymerized on the adhesive 2 uniformly applied to the entire surface of the hard insulating material 1 made of foamed resin, and the adhesive 2 is left in a state of being pressed with a press or the like. Harden. During this curing, a non-uniform portion is generated in the application of the adhesive 2 in the coating step, and a gas such as air is mixed between the hard heat insulating material 1 and the film-shaped exterior material 3 corresponding to the non-uniform portion. Even if it remains, the residual gas is dispersed to the periphery along the cloth-like fiber material 4 having air permeability and escapes to the outside of the panel. Therefore, the film-like exterior material 3 that becomes the surface of the product panel In this way, a product panel with good appearance can be obtained with almost no local swelling.
[0013]
In addition, this inventor uses the glass cloth made from Kanebo Co., Ltd. product number: KS5210 as the cloth-like fiber material 4 using the hard urethane foam with a density of 40 kg / m ³ as the hard insulating material 1 made of foamed resin. As shown in FIG. 2, a composite exterior material having a thickness of 100 μm and a product name: PETAL 100-25N (commonly known as Alpet) manufactured by Japan Vilene Co., Ltd. is used as the film-shaped exterior material 3 described above. About the state of occurrence of swelling per 1 m ² , using the product of the present invention manufactured by various processes and procedures and the conventional product manufactured by the processes and procedures as shown in FIG. The observation test was conducted. Here, the clamping time of each sample was set to 24 hours.
[0014]
As a result of the above observation test, in the conventional product, there were several blisters having a diameter of about 10 to 50 mm over the whole area, whereas in the product of the present invention, there was no blister at all or a diameter of 10 mm in part. There were only a few small blisters below.
[0015]
【The invention's effect】
As described above, according to the present invention, since the cloth-like fiber material is interposed between the foamed resin-made hard heat insulating material and the film-like exterior material, when applying the adhesive to the surface of the hard heat insulating material, Without damaging the hard insulation material with a spatula or other application jig on the cloth-like fiber material, apply a strong force to the application surface to spread the adhesive and work evenly over the entire surface of the hard insulation material In addition to this, it is possible to apply a gas such as air mixed in the adhesive material impregnated in the cloth fiber during the application of the adhesive by a strong spreading force by an application jig such as a spatula. It is possible to disperse to the periphery along the elastic cloth-like fiber material and to escape to the outside. In addition, even if gas such as air remains in the non-uniform portion generated during the application of the adhesive, the residual gas is dispersed around the cloth-like fiber material during the curing of the adhesive in the pressed state. Because it can be pulled out to the outside, there is almost no local swelling on the film-like exterior material that forms the surface of the product panel after curing the adhesive, and the appearance is not impaired, and the yield is greatly improved. There is an effect that it can be achieved.
[0016]
In particular, as described in claim 2, in the case of using an inorganic fiber material such as a glass cloth or a glass nonwoven fabric as a cloth-like fiber material used in the method for producing a heat-insulating panel made of foamed resin having the above-described configuration, In addition to the defoaming function to extract gas such as air mixed between the hard heat insulating material and the film-like exterior material to the outside of the periphery, the reinforcing function when used under low and high temperature conditions should be fully demonstrated. it can.
[0017]
Moreover, when using the composite exterior material which laminates | stacks a polyester film, aluminum foil, and a nonwoven fabric as a film-form exterior material used for the manufacturing method of the foamed resin heat insulation panel of the said structure as described in Claim 3. In addition to a predetermined defoaming function, it has excellent performance in terms of tensile strength and stretchability with respect to temperature changes, and can also expand the application range of product panels such as cold insulation panels.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a foamed resin heat insulation panel according to the present invention.
FIG. 2 is a longitudinal sectional view for explaining the manufacturing process and procedure of a foamed resin thermal insulation panel according to the present invention.
FIG. 3 is a longitudinal sectional view for explaining a manufacturing procedure of a conventional heat insulating panel made of foamed resin.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hard heat insulating material 2 Adhesive 3 Film-shaped exterior material 4 Cross-shaped fiber material

Claims (3)

Adhesive is applied to at least the surface of the hard foam insulation material made of foam resin, and the above-mentioned hard insulation material made of foam resin and the film exterior material are bonded and fixed by overlaying and pressing the film exterior material on the surface of the adhesive. In the manufacturing method of the heat insulating panel made of foam resin,
After roughly applying an adhesive to the surface of the hard heat insulating material previously foam-molded, a cloth-like fiber material that can be impregnated with the adhesive and having air permeability is placed on the adhesive. Apply the adhesive evenly over the entire surface of the foamed resin hard heat insulating material by spreading the adhesive that comes out using a spatula or other application jig, and layer the film-like exterior material on it. A method for producing a foamed resin heat insulation panel , wherein the foamed resin heat insulation material and the film-shaped exterior material are bonded and fixed by pressing together . The method for producing a heat-insulating panel made of foamed resin according to claim 1, wherein an inorganic fiber material such as glass cloth or glass nonwoven fabric is used as the fiber material. The manufacturing method of the heat insulation panel made from foamed resin of Claim 1 or 2 which uses the composite exterior material formed by laminating | stacking a polyester film, aluminum foil, and a nonwoven fabric as said film-form exterior material.

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