Five-layer, biaxially stretched tubular film for packaging and encasing pasty food stuffs
US5612104A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Jul 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1324
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A five-layer, tubular polyamide film for wrapping and/or covering pasty foodstuffs, in particular for use as a sausage casing, in which the film is made up of an inner layer and an outer layer made of the same polyamide material consisting of at least one at least one aliphatic polyamide and/or at least one aliphatic copolyamide and/or at least one partly aromatic polyamide and/or at least one partly aromatic copolyamide, a middle polyolefin layer, and two bonding agent layers each made of the same material. The proportion of partly aromatic polyamide and/or copolyamide is 5 to 60%, in particular 10 to 50%, relative to the total weight of the polymer mixture of partly aromatic and aliphatic polyamides and copolyamides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.