Process of making cellulose acetate tow

Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation

Reexamination Certificate

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Details

C264S130000, C264S168000, C264S17800F, C264S187000, C264S207000, C264S211120, C264S211140, C264S234000

Reexamination Certificate

active

07425289

ABSTRACT:
In the manufacture of a fiber tow, particularly cellulose acetate tow, a stuffer box crimper has a pair of nip rollers, at least one, made of a solid ceramic material.

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patent: 5677058 (1997-10-01), Neal et al.
patent: 56-53223 (1981-05-01), None
patent: 2964191 (1993-07-01), None
patent: WO 02/087366 (2002-11-01), None

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