Heat-shrinkable polyester film and preparation method thereof
US8507057B2 · kind B2 · utility
3Cited by
4References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 19, 2009 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Nov 23, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A heat-shrinkable polyester film having a thermal shrinkage ratio of 15% or more in the longitudinal direction when treated at 100° C. for 10 seconds, a tensile strength at rupture in the longitudinal direction of 7 kgf/mm2 or more, and a difference between elongations at the hardening and yield points in the longitudinal direction of 15% or more exhibits superior properties, such as high tensile strength and crack-resistance in the longitudinal direction, suitable for labeling or shrink-wrapping containers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.