Non-reinforced film of cellulose
AssigneeHoechst Aktiengesellschaft
InventorsKarl Stenger, Horst Faust
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Abstract
An improved non-reinforced cellulose film is disclosed. The film is useful as a sausage casing. When exposed to water the casing shrinks in the transverse or circumferential direction, so that the sausages look plump and crease-free and the casing can be peeled easily from the enclosed sausage meat. The film is made by moistening a non-reinforced cellulose film, drawing the film in the transverse direction, and drying the film in the stretched state.
Claims19
A stretched non-reinforced film of regenerated cellulose having a dry weight per unit area of 20 to 50 g/m.sup.2, a dry moisture content of 6% to 15%, an elongation in the longitudinal direction of 0.5% to 1.5% upon exposure to water, and a shrinkage in the transverse direction of 3% to 8% upon exposure to water.
A process for the production of non-reinforced films of regenerated cellulose, comprising the steps of:
- moistening a dried web of non reinforced cellulose hydrate gel;
- stretching the moistened web;
- and
- drying the web while maintaining the stretching force until a moisture content of not more than 20% by weight is achieved.
Dependencies are inferred from the claim text.