Thermo-shrinkable polyester film
US7306835B2 · kind B2 · utility
11Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2007 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jan 29, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a thermo-shrinkable polyester film with a superior thermal shrinkage, which has an orientation angle of a molecular chain in a range of from 0° to about ±10° relative to a main shrinkage direction, and a molecular orientation ratio (MOR) in a range of from 1.29 to about 2.5, thereby preventing a label made from the film from curling or waving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.