Method of shaping a laminated thermoplastic billet

Details Method of shaping a laminated thermoplastic billet Method of shaping a laminated thermoplastic billet

1988-10-27

1990-05-01

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264512, 264522, 264153, 264322, 4251748E, B29B 1308

Patent

active

049216473

ABSTRACT:
A laminate having at least one non-dielectrically heatable first material, (processable at an optimum starting temperature), and at least one dielectrically-heatable second material, (processable at a higher optimum finish temperature), is initially brought to its starting temperature. The dielectrically heatable second material is then heated to its finish temperature, by being subjected to radio frequency (RF) or microwave radiation at selected frequency(s). The laminate is then stretched so as to shape the laminate while the first material and second material are at or near to their optimum processing temperatures.

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