Method for improving the crimping of polyolefin filter tow

Details Method for improving the crimping of polyolefin filter tow Method for improving the crimping of polyolefin filter tow

1988-08-10

1990-05-15

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 26, 264147, 264168, 264563, 264DIG47, D01D 522, D01D 542

Patent

active

049256025

ABSTRACT:
A method is provided for heating fibrillated polyolefin film prior to crimping, to improve the crimping, and thus the yield and variability as a filter, of the tow. The fibrillated tow is crimped while still hot from the heating step. The resulting fibers have more uniform crimping at higher levels than those not subject to heating.

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