Method of high temperature molding using a thermal barrier

Details Method of high temperature molding using a thermal barrier Method of high temperature molding using a thermal barrier

1987-12-28

1991-01-08

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264257, 264325, 249135, 4254052, B29C 4310

Patent

active

049833456

ABSTRACT:
This invention is directed to a thermal barrier layer particularly adapted for insulating a solid flowable particulate polymeric pressure transfer medium from elevated temperatures during high temperature molding. A method useful with the thermal barrier comprises transferring pressure from a pressure means via the thermal insulation layer to an article and exposing the article to temperatures of about 316.degree. C. to about 1371.degree. C. An exemplary thermal barrier comprises at least two flexible layers of beads having a thermal insulation of less than about 2 k.

REFERENCES:
patent: 3844523 (1974-10-01), Wilheim
patent: 4217157 (1980-08-01), Stoltze
patent: 4243368 (1981-01-01), Garabedian
patent: 4264544 (1981-04-01), Wilheim
patent: 4267142 (1981-05-01), Lankheet
patent: 4325899 (1982-04-01), Cole
patent: 4350545 (1982-09-01), Garabedian
patent: 4409048 (1983-10-01), Hatch et al.
patent: 4686271 (1987-08-01), Beck et al.
patent: 4714424 (1987-12-01), Kinugasa

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