Tubular packaging casing, particularly sausage casing, based on cellulose

US5316809A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Klaus-Dieter Hammer · Mainz, DE
• Manfred Siebrecht · Wiesbaden, DE

Key dates

• Filing date: May 15, 1991
• Grant date: May 31, 1994
• Expiry date: May 15, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1324
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A tubular packaging casing, in particular sausage casing, including a cellulose base layer and a barrier layer against steam and atmospheric oxygen, which is free from chlorine. The barrier layer includes random copolymer based on copolymerized vinyl monomers. The vinyl monomers correspond to the general formula CH.sub.2 .dbd.CR.sup.1 --X, wherein PA0 R.sup.1 denotes a methyl group or hydrogen, and PA0 X denotes a (--OCOR.sup.2) group or a (--CO.sub.2 R.sup.2) group, with R.sup.2 denoting an alkyl group having 1 to 20, preferably 1 to 10, and in particular 1 to 5 carbon atoms. In a further embodiment, the copolymer also includes copolymerized vinyl monomers of the above formula except that X denotes a (CO.sub.2 H) group or a (CN) group.