Heat-sealable and shrinkable multi-layer polymeric film
US7939147B2 · kind B2 · utility
2Cited by
10References
37Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 21, 2003 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Jan 6, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/15
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An open-ended tube comprising walls of a heat-sealable multi-layer polymeric film, wherein said film comprises an outer shrinkable substrate layer and an inner heat-sealable layer, wherein said substrate layer has a degree of shrinkage in the longitudinal dimension of the tube of about 0% to about 50% over the temperature range 55 to 100° C., and a degree of shrinkage in the transverse dimension of the tube of 5 to about 70% over the temperature range 55 to 100° C.; and use thereof in the manufacture of packaging for a container suitable as a receptable for a ready-prepared ovenable meal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.