Multi-layer polyamide-based packaging casing

US5480690A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Karl Stenger · Düsseldorf, DE
• Ludwig Klenk · Obermoschel, DE
• Dieter Beissel · Wiesbaden, DE

Key dates

• Filing date: Sep 27, 1993
• Grant date: Jan 2, 1996
• Expiry date: Sep 27, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31746
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The biaxially stretch-oriented multi-layer tubular packaging casing for packaging pasty products, in particular the artificial sausage casing, includes a barrier layer having a reduced permeability to oxygen, an outer layer and an inner layer. The barrier layer comprises a partially aromatic polyamide and/or copolyamide, the outer and inner layers an aliphatic polyamide or copolyamide or a polymer mixture of at least one of the two compounds.