JP3229391U - Phenol foam film laminated composite panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating panel having enhanced compression strength and bending strength in a rooftop heat insulating waterproofing of a steel-framed reinforced concrete structure or a steel-framed roof. SOLUTION: A multi-layer film 2 of a polyester terephthalate film and an unstretched polypropylene film is heat-sealed on both sides of a phenolic foam 1 to form a phenolic foam composite panel. This can increase the water resistance and the weakness of the partial compression strength by dispersing the load on the surface of the film, and the slab made of reinforced concrete using the field of rooftop heat insulation and waterproofing and the binding aid with concrete. Can be driven into concrete. [Selection diagram] Fig. 1

Description

The utility model relates to the enhancement of compressive strength and bending strength by a panel in which films are bonded to both sides of phenolic foam by thermal lamination and integrated.

As a conventional heat insulating panel, there is a composite structure in which an expanded metal is adhered to the surface of a styrofoam heat insulating material or a phenol foam heat insulating material for heat insulating and waterproof applications disclosed in Japanese Patent Application Laid-Open No. 2004-332269. In this conventional technique, the foam naturally plays a role as a heat insulating material, and the expanded metal acts as a reinforcing material and is bonded so as to withstand walking and work, and an adhesive such as a silicon-based or urethane-based adhesive plays a role of adhering to the expanded metal. Is playing.

As a conventional heat insulating panel that also serves as a formwork as a second application, there is one that is laminated by heat-sealing and pasting a plastic film on one side of a heat insulating plate made of expanded polystyrene plate disclosed in Patent 2823916. This formwork-combined panel is made by laminating a plastic sfilm on one side of a heat insulating plate made of expanded polystyrene plate.

As a mode of use, in the construction of a structure in which a heat insulating material is spread on the lower surface of the first floor slab of a reinforced concrete structure having an underfloor space, after assembling the support in the underfloor space, a plastic film is placed on the support. It is placed on the floor, arranged on the heat insulating panel that also serves as a formwork, and concrete is cast.

JP-A-2004-332269

Patent-2823916

The above-mentioned conventional first heat insulating panel plays a role of reinforcing the styrofoam as a heat insulating material by the expanded metal, but the expanded metal increases the weight of the panel and hinders the transportation and the mounting work. In addition, the rust on the end of the expanded metal cannot be stopped, causing the problem of rust when used for a long period of time.

In the above-mentioned second conventional heat insulating panel that also serves as a formwork, the tension of the plastics film bears the tensile force due to the load during the bar arrangement work and the concrete placement on the foamed polystyrene plate, and the concrete formwork. It is used not only as a panel but also as a heat insulating material, but since the film is attached only to the lower surface so as not to impair the adhesion between the concrete to be cast and the foam, the bending strength is effectively increased even if the film is attached. I couldn't. Therefore, there is a problem that the thickness and density of the foam must be increased in order to increase the flexural rigidity of the foam.

Further, since the surface of the plastic foam has a small local compression strength, it is liable to collapse when a worker or the like walks on the foam, and there is a problem that the bending strength is lowered and the heat insulating property is lowered due to the decrease in thickness. Further, since the local compression strength is small, a special spacer having a large bottom surface is required as a reinforcing bar spacer. In addition, it is difficult to screw the electric box or the like because the screwed screw or the like easily falls off.

The present invention is intended to solve the problem of the material having such a conventional structure, and the heat insulating panel according to claim 1 has both sides of a film made of a phenol resin foam which has not been conventionally devised. By attaching the film to the surface by thermal lamination, the strength and water absorption of phenol foam, which has weak compressive strength and bending strength and high water absorption, are improved and strengthened.

In order to solve the problem of laminating a polyester terephthalate film on a phenolic foam, the present invention uses a multi-layer film of a polyester terephthalate film and a non-stretched polypropylene film as the film to be laminated on the phenolic foam as described in claim 2, thereby performing thermal lamination. It was possible.

Effect of utility model

In the heat insulating panel integrated by the present invention, since a multi-layer film of polyester terephthalate and unstretched polypropylene film is attached to both sides of the phenol foam, local compression strength and bending strength can be improved. Therefore, it can sufficiently withstand a strong impact during walking or other work during concrete placing or waterproofing, and can be constructed with a normal reinforcing bar spacer. Moreover, when forming a floor slab, high strength is not required for reinforcing bars and the like, and construction costs and material costs can be reduced.

Although it is a phenolic foam with high water absorption and weak water resistance, its drawbacks can be covered by simply performing joint treatment with tape because the front and back surfaces are covered with a film of polyester terephthalate and unstretched polypropylene film.

Since the foam is made of phenolic resin foam, it is lightweight and can improve the work efficiency of transportation and construction. Further, since a strong multi-layer film is attached to both sides, it can be fixed with an adhesive tape or the like, and an electric box or the like can be fixed like a plywood formwork.

Since the foam is made of phenol resin, heat insulation and heat resistance can be improved.

As described above, the film to be attached to the foam of the phenol foam according to claim 2 is a multi-layer film of a polyester terephthalate film and a non-woven polypropylene film, and the non-woven polypropylene film serves as an adhesive layer, and the phenol foam Heat-sealed with polypropylene non-woven fabric on the surface. Furthermore, it penetrates and penetrates the polypropylene non-woven fabric to generate an anchoring effect on the surface layer of the phenolic foam, and it adheres more firmly and integrates with the phenolic foam to further strengthen the peel strength between the phenolic foam body and the polypropylene non-woven fabric as the surface material. Improves bending strength.

It is extremely easy to manufacture because it is bonded by means of thermal lamination.

Insulation construction of steel-framed reinforced concrete or reinforced concrete In the field of concrete driving and heat insulation waterproofing, it is possible to construct phenol foam that has high heat insulation performance but is not used due to its high water absorption and weak compression strength and bending strength. it can.

Phenol foam reinforced with double-sided film can also be installed as a heat insulating panel that also serves as a formwork.

As shown in FIGS. 1 and 2, the heat insulating panel according to the embodiment of the present invention is obtained by attaching the multilayer film 2 on both sides of the phenol foam 1.

Cross-sectional view of the heat insulating panel of the present invention Sectional view of the composite film of the present invention

The foaming ratio of the foam is not limited, but is preferably in the range of 20 to 50 times. Since the plate thickness of foam 1 affects two factors, bending strength and heat insulating performance, it is appropriately selected according to the purpose of use, but it is preferable because heat insulating performance is required to be about 15 to 100 mm under normal use conditions. Is often set within the range of 35 to 75 mm.

The composite film is firstly polyester terephthalate, but there is also a two-layer structure in which an unstretched polypropylene film is laminated on the back surface of a synthetic resin film such as polypropylene, polystyrene, polyethylene or polyester. Secondly, there is a three-layer structure in which an aluminum foil is laminated between the two-layer structure films.

Among these first and second films, a multi-layer film with a synthetic resin film such as polyester terephthalate or polyester sheet having high tensile strength and tensile elastic modulus, excellent bending strength and toughness is particularly preferable.

The thickness of the first and second films is about 20 to 300 μm, preferably 30 to 80 μm, and the synthetic resin film such as polyester terephthalate or polyester used for the surface is 20 to 70 μm on the foam side. The stretched polypropylene film is in the range of 10-40μ. When laminating aluminum foil, the aluminum foil is in the range of 5 to 15μ.

The foam and film are laminated by thermal lamination with a thermal roll, and the temperature of the thermal roll is in the range of 125 to 200 ° C., preferably in the range of 135 to 190 ° C.

When placing concrete or finishing the waterproof layer, the joints on the upper surface side should be covered with moisture-proof waterproof tape.

When concrete is cast and used as a driving method, 4 to 5 attachments such as a commercially available foam keeper / m ^{2 are} attached, and the concrete surface and the panel are physically fastened.

Insulation panel perspective view of the present invention Sectional view of the heat insulating panel of the present invention Sectional view of the composite film of the present invention

Claims (2)

A heat insulating panel characterized in that a film is heated and fused with a heat roller on both sides of a heat insulating material made of a phenolic resin foam to be integrated and manufactured. A heat insulating panel characterized in that the film to be bonded to the foam is a multi-layer film of a polyester terephthalate film and a non-stretched polypropylene film.

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