Slitting of plastic film

Details Slitting of plastic film Slitting of plastic film

1989-08-30

1991-08-27

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624418, 15624419, 428347, 428349, 428910, B29C 4706

Patent

active

050430408

ABSTRACT:
The invention relates to a process for improving the slittability and subsequent wind-up of a roll of clear plastic multilayer coextrusion film by the addition to the skin layer of a slitting aid. The slitting aid is an inorganic filler material the presence of which in the skin layer reduces or eliminates telescoping of the rolled coextruded film, facilitates faster line speed, and allows the reduction of taper tension as the wind-up process progresses.

REFERENCES:
patent: 3980611 (1976-09-01), Anderson et al.
patent: 4101050 (1978-07-01), Buckler et al.
patent: 4147291 (1979-04-01), Alcao et al.
patent: 4595625 (1986-06-01), Crass et al.
patent: 4659612 (1987-04-01), Balloni et al.
patent: 4666772 (1987-05-01), Schinkle et al.
patent: 4764425 (1988-08-01), Balloni et al.
patent: 4911976 (1990-03-01), Park et al.

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