Halogen-free, printable, multilayered shrink films and articles encapsulated therein
US6436496B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a halogen-free, multilayered heat shrink film comprising (A) a core layer comprising a copolymer of ethylene or propylene with an alpha olefin and the core having an upper and lower surface, (B) a skin layer on the upper surface of the core layer, wherein the skin layer comprises a polyolefin or polyolefin blend and (C) a printable layer on the lower surface of the core layer, wherein the shrinkage of the film is at least about 30%. The invention also relates to articles, including cylindrical articles such as batteries. The films have good shrinkage and avoids end puckering. Additionally, the films are printable, even with gravure printing. The films and labels produced thereform may be applied at high speeds and have good heat stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.