Process for texturized blown film and resulting product

Details Process for texturized blown film and resulting product Process for texturized blown film and resulting product

1984-11-23

1986-02-25

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

264 51, 264 53, 2642888, 428131, 428422, 428910, B32B 300

Patent

active

045728585

ABSTRACT:
A process for preparing a blown film having both a texturized surface and a fibrous web reinforcement without special processing to produce such features and the blown film per se are disclosed wherein a polymer composition comprising a major amount of one or more polymers selected from acrylonitrile and olefin polymers and an effective amount of a polytetrafluoroethylene emulsion in the form of an assisted melt obtained using a polymer solvent alone or a combination of a major proportion of polymer solvent and a minor proportion of a melt assistant is extruded through a film-forming die directly into a solidification zone pressurized with vapor of polymer solvent and/or melt assistant under conditions which produce a foamed structure and biaxially orienting said structure while it remains within said solidification zone.

REFERENCES:
patent: 3081519 (1963-03-01), Blades et al.
patent: 3403203 (1968-09-01), Schirmer
patent: 3539666 (1970-11-01), Schirmer
patent: 3655498 (1972-04-01), Woodell
patent: 3896204 (1975-07-01), Goodman et al.
patent: 4085175 (1978-04-01), Keuchel
patent: 4094948 (1978-06-01), Blickenstaff
patent: 4128689 (1978-12-01), Heaps et al.
patent: 4163770 (1979-08-01), Porosoff
patent: 4301112 (1981-11-01), Zwick

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