Continuous paste extrusion method

Details Continuous paste extrusion method Continuous paste extrusion method

1998-02-12

1999-10-12

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

264109, 264127, 425380, 425381, B29C 4700

Patent

active

059650745

ABSTRACT:
Paste extrusion of lubricated PTFE fine powder is carried out by using the extrusion head of the extruder as the ram for forcing the powder through the extrusion orifice in the extrusion head, i.e. the extrusion head is moved against the powder, whether in particle form or preform form, to cause the extrusion.

REFERENCES:
patent: 2685707 (1954-08-01), Llewellyn et al.
patent: 3260774 (1966-07-01), Harlow
patent: 4576869 (1986-03-01), Malhotra
patent: 5225131 (1993-07-01), Tamaru et al.
patent: 5505887 (1996-04-01), Zdrahaka et al.
patent: 5518676 (1996-05-01), De Rocheprise

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