Process for controlling curl in polyester film

Details Process for controlling curl in polyester film Process for controlling curl in polyester film

1990-01-10

1991-12-31

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

2642105, 2642358, 264327, B29C 3510

Patent

active

050769774

ABSTRACT:
A process for controlling curl in polyester film is disclosed in which a cost sheet is heated assymetrically across its thickness during longitudinal stretching to product positive, negative or zero curl, as required for subsequent uses or treatments of the film formed by such stretching.

REFERENCES:
patent: 2851733 (1958-09-01), Pangonis et al.
patent: 2968067 (1961-01-01), Long
patent: 3161711 (1964-12-01), Tassler
patent: 3375313 (1968-03-01), Zygan et al.
patent: 3429961 (1969-02-01), Spencer
patent: 3632726 (1972-01-01), Knox et al.
patent: 3676539 (1972-07-01), Fisher
patent: 3796785 (1974-03-01), Rest et al.
patent: 3816886 (1974-06-01), Van Cappellen
patent: 4093695 (1978-06-01), Heirbaut
patent: 4141735 (1979-02-01), Schrader et al.
patent: 4165356 (1979-08-01), Heider
patent: 4230658 (1980-10-01), Matsukura et al.
patent: 4293508 (1981-10-01), Heirbaut et al.
patent: 4370291 (1983-01-01), Kazama et al.
patent: 4497865 (1985-02-01), Minami et al.
patent: 4587071 (1980-05-01), Minami et al.
patent: 4617164 (1986-10-01), Kanesaki et al.
patent: 4892689 (1990-01-01), Van Cappellen et al.
patent: 4994214 (1991-02-01), Stevens et al.

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