Hoechst Aktiengesellschaft

Horst Pietruck

Klaus-Dieter Hammer

Gunter Gerigk

Wolfgang Klendauer

Max Bytzek

Martin Schroder

Disclosed is a multiple layered film preferably in the form of a tube and being suitable for forming sausage casings, comprising: a central layer of a cellulose hydrate-based material; a first layer on the inside of the central layer, comprising a film of thermoplastic synthetic resinous material and being impermeable to water and water vapor; and a second layer on the outside of the central layer, comprising a synthetic elastic copolymer and being permeable to water and water vapor. Also disclosed is a method for preparing these film products.

Multiple-layer tubing

Disclosed is a packaging material suitable for manufacturing synthetic sausage casings, comprised of a cellulose hydrate base layer and a layer of vinylidene chloride containing copolymer on the base layer, as well as several methods for preparing the packaging material.

Process for preparing packaging material suitable for sausage casings

Tubular packaging material

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Schwabenheim, Germany

Horst Pietruck