Simultaneous stretching of multiple plies of polymeric film

Details Simultaneous stretching of multiple plies of polymeric film Simultaneous stretching of multiple plies of polymeric film

1973-05-30

1977-11-15

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264288, 264289, 264DIG47, B29D 724, B29D 2700

Patent

active

040585824

ABSTRACT:
An improved process for the manufacture of stretched polymeric films. In this process more than two plies of polymeric film are simultaneously stretched. The process of this invention is particularly applicable to those films which must remain free of surface irregularities. For example, the properties of microporous polymeric films are significantly improved by the process of this invention.

REFERENCES:
patent: 2848747 (1958-08-01), Dixon
patent: 3194863 (1965-07-01), Williams, Jr. et al.
patent: 3223761 (1965-12-01), Raley
patent: 3248753 (1966-05-01), Kobayashi
patent: 3257489 (1966-06-01), Heffelfinger
patent: 3322870 (1967-05-01), Sacks
patent: 3415920 (1968-12-01), Lee et al.
patent: 3426754 (1969-02-01), Bierenbaum
patent: 3558764 (1971-01-01), Isaacson
patent: 3565985 (1971-02-01), Schrenk et al.
patent: 3679538 (1972-07-01), Druin et al.
patent: 3758370 (1973-09-01), Sakurai et al.

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