A grainy thermoplastic film and process for its manufacture

Details A grainy thermoplastic film and process for its manufacture A grainy thermoplastic film and process for its manufacture

1996-05-03

1998-10-06

Watkins, III, William P.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428156, 428522, 428523, 383106, 264284, 2642105, 2642093, B29C 5904, B32B 328

Patent

active

058173951

ABSTRACT:
The invention relates to a process for the manufacture of a thermoplastic film which is grainy on its two faces, by passing thermoplastic material between two rolls essentially consisting of metal of high hardness. The invention also relates to a thermoplastic film obtained by this process, to the use of this film for the manufacture of an article for medical use and to this article itself. The thermoplastic material may be, for example, a vinyl chloride polymer or a polyolefin.

REFERENCES:
patent: 4021179 (1977-05-01), Pira et al.
patent: 4259285 (1981-03-01), Baumgartl et al.
patent: 4675019 (1987-06-01), Belhouse et al.
patent: 4810451 (1989-03-01), Ermert et al.
patent: 4997616 (1991-03-01), Dehennau et al.
patent: 5542836 (1996-08-01), Gross et al.
Patent Abstract of Japan, vol. 12 no. 485, Dec. 19, 1988 & JP-A-63 205214 (Hayashi Terenpu KK), Aug. 24, 1988.
Database WPI Section Ch, Week 9040 Derwent Publications Ltd, London, GB; Class A96, AN 90-300689 & JP-A-02211160 (Sekisui Chem Ind KK), Aug. 22, 1990.

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