Heat-shrinkable polyester films
US7749584B2 · kind B2 · utility
11Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2002 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Nov 3, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In heat-shrinkable polyester films, the content of 1,4-cyclohexane dimethanol is 10 to 50% by mole based on the polyhydric alcohol component and that the heat shrinkage factors of a 10 cm square sample of the films in (A) hot water of 75° C., (B) hot water of 85° C., and (C) hot water of 95° C. are 30 to 40%, 50 to 60%, and 65 to 77%, respectively. The films can be produced by drawing under specified conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.