Heat shrinkable polyester film
US6451445B1 · kind B1 · utility
14Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a heat shrinkable polyester film whose hot water shrinkage along its main shrinkage direction is equal to or greater than 20% when the film is put in hot water of 70° C. for 5 sec; 35% to 55% when put in hot water of 75° C. for 5 sec; and 50% to 60% when put in hot water of 80° C. for 5 sec, wherein the compressive strength of the label formed by the film satisfies a following expression (1):Y>X2.2  (1)where y denotes compressive strength (mN) and x denotes film thickness (&mgr;m).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.