Fibre-reinforced plastic parts - by winding extruded plastic with reinforcing fibre, converting into woven fabric, embedding in plastic matrix and forming as required

摘要

Prodn. of fibre-reinforced plastic prods. (I) esp. composites with complex spherical contours, reinforced with woven fabric made from high-performance fibre (II); involves producing strings of plastics material, winding the fibres round the strings to form a spiral, converting the wound strings into woven fabrics, embedding the fabric in a plastic matrix and moulding the combination to the required shape. The fibre is wound onto a plastic string with varying dia. or pitch; the woven fabric is first made into a shape corresp. to the required contour and then embedded in the matrix, or embedding and moulding is carried out as a simultaneous process, pref. with the part heated to at least 120 (pref. 150 deg.C) in the forming process all the fibres are brought into an almost stretched form; several layers of (II) are arranged one above the other in the matrix, and the embedded fabric is stretched by more than 3 times in at least one direction; the warp and weft threads may consist of plastic strings wound with different fibres. USE/ADVANTAGE - The invention enables the prodn. of fibre-reinforced plastic components which can be deformed by more than 10% (pref. by more than 50%) by stretching etc. without breaking the fibre-reinforcement or reducing the width of the component (with longitudinal stretching). (1/2)