Sheet stress relaxation

Details Sheet stress relaxation Sheet stress relaxation

1980-10-24

1982-05-11

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264230, 264342RE, B29C 2500

Patent

active

043293158

ABSTRACT:
Tne tensions in an extruded sheet of a thermoplastic can be relaxed by passing the preheated extruded sheet over a conveyor where it is supported on a cushion of heated air so as to maintain it at an elevated temperature while the tensions in the sheet are relaxed.

REFERENCES:
patent: 3263886 (1966-08-01), Smith
patent: 3385490 (1968-05-01), Malmgren et al.
patent: 3632726 (1972-01-01), Knox et al.
patent: 3679791 (1972-07-01), Reade
patent: 3741453 (1973-06-01), Pierce et al.
patent: 3868286 (1975-02-01), Fariss et al.
patent: 3873664 (1975-03-01), Curtis et al.
patent: 3979038 (1976-07-01), Karlsson
patent: 4074841 (1978-02-01), Kramer et al.

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