Heat-shrinkable polyester film and heat-shrinkable label
US7344765B2 · kind B2 · utility
19Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2004 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Dec 22, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat-shrinkable polyester film having a multi-layer structure of at least two layers, among which at least one layer is a layer containing a PET bottle-recycled material, wherein a heat shrinkage percentage in a maximum shrinkage direction of a 10 cm square sample cut out from the film is 40% or higher, under the condition that the square sample is immersed in hot water of 95° C. for 10 seconds and then immersed in water of 25° C. for 10 seconds, to provide a heat-shrinkable polyester film which has excellent characteristics and which can be produced at a high rate, even when a PET bottle-recycled material is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.