Vacuum forming technique for sandwich structure piece of composite material of fiberglass-reinforced plastics

A technology of composite materials and sandwich structures, applied in the direction of synthetic resin layered products, layered products, chemical instruments and methods, etc., can solve problems such as surface roughness, air bubbles, internal quality, and unsatisfactory geometric thickness errors, etc., to achieve simplification The effect of forming device
CN1915650AActive Publication Date: 2007-02-21上海之合玻璃钢有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海之合玻璃钢有限公司
Publication Date
2007-02-21

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Abstract

A composite glass fiber reinforced plastics material with sandwich structure is composed of an external layer made of glass fiber reinforced plastics and coated by water-proof resin, an internal layer made of glass fiber reinforced plastics, and a core layer with cellular structure or made of foam plastics. Its vacuum forming technology includes such steps as respectively preparing mould, external layer, internal layer and core layer, molding, and vacuum solidifying.
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Description

technical field

[0001] The invention relates to a vacuum forming process for a glass fiber reinforced plastic composite sandwich structure. Background technique

[0002] The existing molding process of the glass fiber reinforced plastic composite sandwich structure generally adopts the single-mode soft air bag method, that is, a positive pressure soft air bag is provided on the single mold. The products produced by this method are not ideal in terms of intrinsic quality, geometric dimensions, especially thickness error and other indicators, and are prone to appearance quality problems such as delamination, bubbles, and surface roughness. Contents of the invention

[0003] The purpose of the present invention is to provide a vacuum forming process for the FRP composite sandwich structure so as to improve the internal quality and appearance quality of the FRP composite sandwich structure.

[0004] The glass fiber reinforced plastic composite sandwich structure of the presen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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