System and method for heating and forming thermoplastic material

Details System and method for heating and forming thermoplastic material System and method for heating and forming thermoplastic material

1976-05-03

1978-05-30

Camby, John J.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

219405, 219411, 4251744, 432 8, 432 9, B29C 1706

Patent

active

040923908

ABSTRACT:
A system and method for heating thermoplastic material and forming elongated and involute thermoplastic articles from the thermoplastic material is disclosed. Means are provided for controllably heating a sheet of thermoplastic material to form preselected temperature gradients throughout the sheet of thermoplastic material. Means are further provided for planarly supporting the heated sheet of thermoplastic material allowing for transverse motion of the heated sheet of thermoplastic material at the center thereof and further allowing for controlled slippage of the heated sheet of thermoplastic material toward said center thereof relative to the planar support means. Means are also provided for transversely forming a heated sheet of thermoplastic material into the shape of an elongated or involute plastic article.

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patent: 3761550 (1973-09-01), Seefluth
patent: 3814562 (1974-06-01), Diamond
patent: 3984197 (1976-10-01), Birke et al.

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