Polymer films partially provided with stiffened segments, proces

Details Polymer films partially provided with stiffened segments, proces Polymer films partially provided with stiffened segments, proces

1988-07-25

1990-10-30

Ryan, Patrick

Stock material or miscellaneous articles

Structurally defined web or sheet

Edge feature

428412, 428419, 428421, 428422, 4284735, 428480, 428483, 428522, 428910, 156155, 156242, 156246, 264204, 2642902, 2642893, 26433115, B32B 900

Patent

active

049668030

ABSTRACT:
The invention relates to films of polymers of high molecular weight, which have been obtained by casting polymers dissolved or swollen in solvents and partially contain stiffened segments, which films serve either for decorative, handling or fixing purposes or allow, especially when formed on the film edges, a particularly ultrahigh stretching of the films without excessive formation of lips.

REFERENCES:
patent: 3562383 (1971-02-01), Ayres
patent: 3634182 (1972-01-01), Biglin et al.
patent: 4090008 (1978-05-01), Haley
patent: 4551296 (1985-11-01), Kavesh et al.
patent: 4600633 (1986-07-01), Kono et al.
patent: 4663101 (1987-05-01), Kavesh et al.
patent: 4664859 (1987-05-01), Knoop
patent: 4726977 (1988-02-01), Goldstein et al.

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