Molding polytetrafluoroethylene

Details Molding polytetrafluoroethylene Molding polytetrafluoroethylene

1989-10-06

1991-03-05

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Plural, intermittent pressure applying

264122, 264126, 264127, B29C 4314

Patent

active

049976087

ABSTRACT:
A process for producing a workpiece by compacting powder material, includes the steps of applying compression to the material along selected preferably orthogonal axes in compression steps, each compression step causing a volume reduction selected to produce the desired final compaction and orientation of material in the workpiece for that axis.

REFERENCES:
patent: 4009977 (1977-03-01), Chao
patent: 4142888 (1979-03-01), Rozmus
patent: 4536366 (1985-08-01), Inoue
patent: 4615859 (1986-10-01), Traut
patent: 4615933 (1986-10-01), Traut
patent: 4820663 (1989-04-01), Mehrotra et al.
patent: 4840763 (1989-06-01), Freitag

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