The Wiggins Teape Group Limited

William T Skelding

Bronislaw Radvan

Anthony J Willis

A process for moulding articles of fibre reinforced plastics material which includes pre-heating a sheet of consolidated thermoplastics material which has dispersed therein from 20% to 70% by weight of reinforcing fibres which have a high modulus of elasticity (as herein defined) and between about 7 and about 50 millimeters long to cause the sheet to expand due to relief of the stresses in the reinforcing fibres, placing the expanded sheet in a compression mould and closing the mould to form an article of predetermined shape having portions of different density.

Method of molding fiber reinforced plastic articles

A process for moulding articles of fibre reinforced plastics material which includes heating and moulding a sheet of consolidated thermoplastics material which has dispersed therein from 20% to 70% by weight of reinforcing fibres which have a high modulus of elasticity (as herein defined) and between about 7 and about 50 millimeters long so that the stresses embodied in the glass fibres cause the matrix to expand into the configuration of the mould and become porous.

Moulded fibre reinforced plastics articles

A solid fibre reinforced plastics material sheet comprising 20% to 60% by weight of reinforcing fibres having a high modulus of elasticity (as herein defined), a substantial proportion of the fibers being between 7 and 50 millimeters long and 13 microns or less in diameter, and 40% to 80% by weight of a thermoplastics material.

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High Wycombe, United Kingdom

William T Skelding