Air pressure forming method for producing glass fibre reinforced plastic

Abstract

The invention relates to a glass reinforced plastics air pressure forming manufacturing method. It can effectively solve the problem that both sides of the glass reinforced plastics product is gabrous, especially the big internal mold cavity, and small collar extension. The technical proposal are that resin and fiber are coated between the hard outer mold and the soft inner mold; after sealing the mold gland is fixed and aerated to increase pressure; or after air proof hold down strip is sealed, the inner and outer mold are set in the pressure container to aerate, increase pressure, and solidify. The invention can solve the pressing problem which can not be solved by the existing pressure forming technology, which means no matter how complicate the shape of the product is, it still can make the both sides of the product be gabrous. Its advantages are that the manufacturing technique is unique; the effect is good; the quality of the product is good; the appearance is beautiful; the market is wide; and the economic benefit is notable.

Description

1. Technical field [0001] The invention relates to an air pressure forming method, in particular to a glass fiber reinforced plastic air pressure forming manufacturing method for producing glass fiber reinforced plastic products. 2. Background technology [0002] At present, the commonly used FRP molding methods include hand lay-up molding, compression molding, casting molding and winding molding (processes). The product has a smooth and flat appearance on both sides (inside and outside), which greatly affects the quality, use value and sales of the product, and affects the production and development of FRP. 3. Contents of the invention [0003] In view of the above-mentioned situation, the purpose of the present invention is exactly to provide a kind of new FRP air pressure forming manufacturing method (production process), can effectively solve the double-sided smoothness of FRP products, especially the problem of double-sided smoothness of FRP products with large inner ...

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Problems solved by technology

[0003] In view of the above-mentioned situation, the purpose of the present invention is exactly to provide a kind of new FRP air pressure forming manufacturing method (production process), can effectively solve the double-sided smoothness of FRP products, especially the problem of double-sided smoothness of FRP products with large inner mold abdominal cavity and small outer diameter. The technical solution is to evenly coat resin and fiber on the inner wall of the hard outer mold, then put the inner mold made of soft material into the mold cavity, then use the mold gland to compress the mold caliber, and use the mold gland to The air hole on the top is inflated and pressurized, and then the product is smooth on both sides or evenly coated with resin and glass fiber on the inner wall of the outer mold. Then put the sealed inner and outer molds into a pressure-resistant container for sealing and pressure molding, or after the inner and outer molds are sealed and heated, cast thermosetting resin or thermoplastic resin to solidify or cool to form, so as to achieve smoothness on both sides of the product. The invention can solve the pressing problem that cannot be solved by the existing molding process, that is, no matter how complicated the shape of the product is, both sides of the product can be smooth and clean. economic benefits

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