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US 5,723,199 AGranted
Method of extruding two or more materials
AssigneeReddiplex Group PLC
InventorPeter Lawrence Boot
Life of this patent
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Abstract
A method of making ornamented elongate members, for example for picture frames, uses the steps of extruding a first material and cooling it so that it is substantially solid, extruding a second material along a surface of the first material, which is arranged to undergo a change enabling a firm bond to be formed between the materials, shaping the second material to produce surface ornamentation and cooling the first and second materials. This provides an inexpensive and quick way of producing ornamented members.
Claims12
A method of manufacturing an ornamental elongate member comprising the steps of
- extruding a first material, said first material being a thermoplastic material;
- cooling said first material so that it solidifies;
- extruding a second material along a surface of said first material, said surface of said first material being melted to enable a firm bond to be formed between said first and second materials;
- mechanically treating said second material while it is still plastic to produce surface ornamentation in relief thereon without affecting the shape of said first material;
- and
- cooling said ornamented first and second materials to form a firmly bonded, solid structure.
3 more elements
Dependencies are inferred from the claim text.