Polymeric films
US6306490A · kind A · utility
5Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1998 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Jan 16, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31917
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Biaxially oriented polymeric films having a core layer of a voided propylene homopolymer with a density of not more than 0.70 g/cm.sup.3, and at least one substantially non-voided layer on each surface of the core layer, the ratio of the combined thicknesses of the non-voided layers on the respective surfaces of the core layer being from 2:1 to 1:1. Films in accordance with the present invention have low curl, particularly after having been printed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.