JPH04323024A - Surface treating method of continuous frp article - Google Patents

Abstract

PURPOSE:To provide a manufacturing method capable of molding a superficially smooth article previously in the manufacturing stages at the time of a continu ous FRP article. CONSTITUTION:When a continuous molding is molded, while a molding G consisting of fiber reinforced thermosetting resin is successively pulled out of extraction mold 3, on the surface of the high temperature article pulled out of the extraction mold 3, a surface wrapping film or a sheet 4 is pressed and laminated via an adhesive agent while being supplied successively, thereby performing an effective utilization of the preheating in the case of hardening and effecting a rapid surface treatment.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment method for long FRP products.

0002

BACKGROUND OF THE INVENTION Conventionally, fiber-reinforced resin building materials containing unsaturated polyester resins and phenolic resins as main components have been widely used as noncombustible building materials. These fiber-reinforced resin building materials, which are mainly composed of resin, have the advantages of being much lighter than inorganic board materials whose main components are cement, etc., which are also well-known as non-combustible building materials, and have excellent heat insulation properties, and are used mainly for indoor use. Widely used as a molding material for decorative board materials, etc. In addition, fiber-reinforced resin building materials whose main component is the above-mentioned resin have very low strength and cannot be used as building materials if they are made only of the resin component, so they are pultruded using glass fiber mats, glass fiber rovings, etc. as reinforcing bodies. things are done.

By the way, when a fiber-reinforced resin building material is molded by the above-mentioned pultrusion method, the reinforcing body is exposed on the surface of the molded product, which impairs the surface smoothness and requires surface treatment. In the past, a decorative film or sheet was attached to a molded product that was cut into product lengths. In addition, the product may be a foamed fiber-reinforced foamed resin, but in this case, the surface becomes porous and smoothing treatment is essential.

0004

[Problems with the prior art] However, in the above-mentioned cosmetic means, the molded product is once fed to a wrapping device, a decorative film or sheet is layered with a thermosetting adhesive, and then the product is transported to a heating furnace and heated. The work of adhering decorative sheets by curing a curable adhesive is performed, which requires separate equipment such as a heating furnace, and the work is also troublesome, resulting in poor production efficiency.

[0005]

[Problems to be Solved by the Invention] In view of the above-mentioned problems, the present invention has been made for the purpose of providing a manufacturing method that can form a long FRP product into a product with a smooth surface already at the manufacturing stage. It is something that

[0006]

[Means for solving the problem] That is, the long F of the present invention
The surface treatment method for RP products is performed when a long molded product is formed by continuously drawing a molded article made of fiber-reinforced thermosetting resin from a drawing die, and the product is drawn out from the drawing die in a high temperature state. This method is characterized in that a surface decorative material such as a film or sheet is pressed onto the surface via an adhesive and laminated while being continuously supplied.

[0007]

[Example] Next, an example of the present invention will be described. FIG. 1 is a side sectional view showing the state of implementation of the invention. First, a reinforcing fiber body such as glass roving or glass fiber mat 1
, a thermosetting resin 2 such as unsaturated polyester or phenol resin is supplied to 1 using a resin bath or, in the case of matte, a device such as a compression roll (not shown) to fully impregnate the resin, and then the resin is pulled out. When molding the molded product G by supplying it to the molding die 3 and curing it by heating, a thermosetting adhesive is applied to the surface of the molded product G immediately after being pulled out from the pultrusion molding die 3 while the product is being preheated. A film coated with
Press the decorative surface material 4, 4, such as a sheet or a board,
The adhesive is bonded while being pressed by a pressing member 5 such as a rubber roller or a sponge roller.

In the above, as a means for pressing the decorative surface material 4, watertight bags 5A, 5A filled with hot water are used as shown in FIG. 2, as shown in FIG. good. In this case, the watertight bag 4A on the surface
Since it can be deformed along the curve, it is convenient for wrapping molded products with irregularly shaped surfaces. In the figure, 6 and 6 are drawing machines for the molded product G, and 7 is a heating casing, which is provided to maintain the high temperature of the molded product G.

[0009]

[Function] In the present invention, when a fiber-reinforced phenol resin molded article is pultruded, the decorative surface materials 4, 4 are pressed against the surface of the molded article in a high temperature state immediately after being pulled out from the mold, so this heat is absorbed. This is used for surface wrapping.

0010

Effects of the Invention As explained above, this invention overlaps and adheres a decorative material to the surface of a product in a high temperature state immediately after being pulled out from a mold, so the surface can be quickly decorated without the need for a separate heating device. becomes possible. Furthermore, since heat is used for curing, it has various effects such as energy saving.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a state in which the invention is implemented.

FIG. 2 is an enlarged cross-sectional view of the waist of the embodiment of the present invention.

[Explanation of symbols]

1 Reinforcement fiber 2 Thermosetting resin 3 Pultrusion mold 4　　　　　　　surface decorative material 5 Pressing member

Claims (1)

[Claims] [Claim 1] In the case where a long molded product is formed by continuously drawing a molded article made of fiber-reinforced thermosetting resin from a drawing die, a film is formed on the surface of the product in a high temperature state after being drawn from the drawing die. Alternatively, a method for surface treatment of long FRP products, characterized in that surface decorative materials such as sheets are laminated while being pressed and continuously supplied through an adhesive.