Patent · US Expired

Film of fiber-reinforced regenerated cellulose provided with a gas-impermeable layer, for the production of tubular casings

US4623566A · kind A · utility

9Cited by

17References

18Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Erna Kastl · Niedernhausen, DE
Ludwig Klenk · Obermoschel, DE
Horst Faust · Wiesbaden, DE
Karl Stenger · Düsseldorf, DE

Key dates

Filing date	Nov 30, 1984
Grant date	Nov 18, 1986
Priority date	—
Expiry date	Nov 30, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31986
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Disclosed is a film of fiber-reinforced regenerated cellulose having on one surface thereof a gas-impermeable layer and on the other surface thereof a gas-permeable layer, the gas-permeable layer comprising a plurality of linear discontinuities running parallel to one another, distributed across the surface of the layer. Preferably, both the gas-permeable layer and the gas-impermeable layer comprise a vinylidene group-containing copolymer. Also disclosed is a process for producing the film and a seamed tubular casing, preferably a sausage casing, made from the film.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.