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US 4,690,860 AGranted
Fibre reinforced composite plastics material
AssigneeThe Wiggins Teape Group Limited
InventorsBronislaw Radvan, Andrew Till
Life of this patent
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Abstract
A fibre reinforced plastics structure comprising a porous matrix of thermoplastics material and reinforcing fibres, the pores of said matrix being wholly or partly invested with a thermosetting plastics material.
Claims13
A fibre reinforced plastics structure, comprising:
- a porous matrix comprising 40% to 60% by weight of thermoplastic material and 20% to 60% by weight of single reinforcing fibres having a high modulus of elasticity, and being between about 7 and 50 millimeters long, the matrix having pores and a surface;
- and
- a cured thermoset plastics material investing at least the pores at the surface of said matrix.
A method of making a fibre reinforced plastics structure, comprising the steps of:
- forming a porous matrix comprising 40% to 60% by weight of thermoplastic material and 20% to 60% by weight of reinforcing fibres having a high modulus of elasticity, and being between about 7 and about 50 millimeters long, the matrix having a surface and pores;
- investing the pores of said structure, at least at the surface thereof, with liquid thermosetting resin;
- and curing said resin.
Dependencies are inferred from the claim text.