JPS6169446A - Manufacture of molding flet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is directed to a method for producing molded felt, which is mainly used as an interior material for vehicles such as automobiles.

[Background of the invention]

With regard to this type of interior material, various attempts have been made to reduce the weight of interior materials in order to completely improve the fuel efficiency of automobiles and the like, since there is a growing demand for resource conservation. In order to reduce the weight of interior materials, it is possible to use fine fibers such as Kapo-l cotton in the case of felt materials, or to make the board thinner, but both of these methods reduce the strength of the material. It is something that forces you to do something. Therefore, it has been proposed to laminate reinforcing paper in order to reinforce the felt material.

[Conventional technology]

Conventionally, the method of laminating felt and reinforcing paper is to polymerize felt and reinforcing paper, heat and pressurize the felt and reinforcing paper, and then form the felt and reinforcing paper.
42065), a method of polymerizing fleece and reinforcing paper, heating and pressurizing it to make the fleece into felt, laminating it with reinforcing paper, and molding it (Japanese Patent Application Laid-Open No. 56-4455)
etc. are provided.

[Problems that the invention is trying to solve]

However, in the former method, the fleece is made into felt and then the reinforcing paper is laminated, so the adhesion between the felt and the reinforcing paper is not sufficient.
And the process of making fleece into Fe/L/
) and reinforcing paper and full lamination process.
Furthermore, since lamination and molding are carried out at the same time, there is a problem that misalignment easily occurs between the felt and the reinforcing paper. The process is shortened and the process is reduced to
The adhesion between /) and reinforcing paper is also good, but since molding is done at the same time, shearing molding pressure is applied to the fleece with low density and low structural strength, which causes cracking of the fleece with -). There is a problem in that it is not possible to obtain a felt layer with a fairly uniform thickness and density.

[Means for solving problems]

The present invention, as a means to solve the above-mentioned conventional problems, polymerizes reinforcing paper (2) on one or both sides of a fleece (1) and heat-press-forms the fleece (1) using a flat press (3).
After forming the nu (1) into a moldable felt (1) A, p-,
It is molded into a predetermined shape.

[For production]

When reinforcing paper is polymerized on one or both sides of fleece and heated and pressed using a flat press, the fleece becomes 1
becomes a moldable felt, and the felt and reinforcing paper are bonded and laminated. Since the press used when performing hot press molding is a flat press, the molding pressure is perpendicular to the fleece LW, K 1 (・1, and the fleece does not produce noise. Also, the adhesion between the felt and the reinforcing paper is After that, if the laminate of felt and reinforcing paper is molded (as described above), the adhesion between the felt and the reinforcing paper is good, so there is no misalignment between the felt and the reinforcing paper during molding. Does not occur. In other words, since felt has a high density and high strength, it does not become loose even when shearing molding pressure is applied.

〔Effect of the invention〕

Therefore, in the present invention, a molded felt can be obtained in which the felt has a uniform thickness and density, and the adhesion between the felt and the reinforcing paper is extremely good and there is no deviation between the felt and the reinforcing paper.

〔Example〕

To explain the present invention based on an embodiment shown in FIGS. 1 to 4, (1) is a fleece, and the fleece is made of fibers, such as polyethylene, polypropylene, holinutylene, ethylene-vinyl acetate copolymer, Thermoplastic resins or thermosetting resins such as polyamide, urethane resin, urea resin, noramine resin, phenol resin, or a mixture with a binder consisting of a mixture of two or more of the above thermoplastic resins and thermosetting resins are used. It is something that has been intertwined by chance. (2) is a reinforcing paper that is polymerized with the fleece (1), and the reinforcing paper (2) is paper, nonwoven paper, etc.;
), if desired, thermosetting synthetic resins such as phenol resin, melamine resin, urea resin, epoxy resin, urethane resin, polyethylene, polyderopine, polystyrene, polyvinyl acetate, polyvinyl chloride, acrylic resin, etc.
Styrene-butadiene resin.

Acrylonitrile-styrene-butanene resin.

It may be impregnated with a thermoplastic synthetic resin such as acrylonitrile-butadiene resin or polyamide.

If desired, an F8 thermal adhesive such as polyethylene, polypropylene, polyamide, or a synthetic resin adhesive such as synthetic rubber, acrylic resin, or vinyl acetate resin may be interposed between the fleece (1) and the reinforcing paper 12). . The polymer of fleece (1) and reinforcing paper (2) is made of the upper mold (3) as shown in Figure 1.
) ml of flat press (3) consisting of A and lower die (3) B
is inserted into the mold and heated and press-molded. By such heat-press molding, the fleece (1) becomes a moldable felt (1) A as shown in FIG. 2, and is layered with reinforcing paper (2). Fleece (1) If K thermosetting resin is mixed with a binder, moldability will be lost if the thermosetting resin is completely cured by heating and press molding.
) The thermosetting resin near the surface of A is partially cured, giving it moldability in a so-called semi-cured state. For example, if phenolic resin is used as the thermosetting resin, 10
Semi-cure type moldable felt by heat press molding at 0-200°C for 2-5 minutes +1) A? obtain. Fer obtained in this way) (o A −?+
Ti strong paper (2) product? , W material a1 is cut if desired,
Alternatively, it is trimmed into a suitable shape and then heated and press-molded in a hot-press mold (4) consisting of an upper mold (4)A and a lower mold (4)B, as shown in FIG. felt full
If A uses phenol Kumura Tsukiji with Kyu 7γ as agent and is a semi-cure type, the temperature is 180-250°C15-3
The phenolic resin in the felt is completely cured by heating and pressing at 0 sc/α2. See you again, Hue! Leto (1
) is thermoplastic or semi-thermoplastic using a binder made of a mixture of thermosetting resin and thermoplastic oil, Fell) (1) A-Reinforcing paper (2) Laminated material (Binding 10) Cold pressing may be performed after heating the material to below the desirability point of the agent. However, if the reinforcing paper (2) is impregnated with a thermosetting resin such as phenolic resin, hot pressing is applicable. be done.

In this way, Fell 1) A-reinforced paper (2) Laminated material 00
is press-molded into a predetermined shape to obtain, for example, a molded ceiling fIIA as shown in FIG.

Other than this example, the reinforcing paper (2) may be layered on both sides of the ferret (1).

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an explanatory diagram of the lamination process, FIG. 2 is a new view of the felt-reinforced paper laminate, and FIG. 3 is an explanatory diagram of the molding process. FIG. 4 is a perspective view of the obtained molded ceiling. In the figure, (11... Fleece, (1) A... Felt, (2) Reinforcement paper, (3)... Flat press, (4
)...Heating and pressing mold, aO...fleece-reinforced paper laminate, ndA...molding ceiling patent applicant Chiryu Takaron Co., Ltd. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A method for producing molded felt, which comprises polymerizing reinforcing paper on one or both sides of a fleece, heating and pressing it using a flat press to make the fleece into a moldable felt, and then molding it into a predetermined shape.