Process for production of heat-shrinkable polyester film, heat-shrinkable polyester film and packages
- 专利权人:
- 发明人:
- 申请号：
- KR20107008667
- 公开号：
- KR101411132(B1)
- 申请日:
- 2008.09.24
- 申请国别(地区):
- 韩国
- 年份:
- 2014
- 代理人:
- 摘要：
The invention aims at providing a heat-shrinkable polyester film which is excellent in tearablity along perforations and in break resistance after storage when used as labels of beverage bottles. The invention relates to a heat-shrinkable polyester film which is made of a polyester resin comprising ethylene terephthalate as the main constituent and containing at least 13mol% of at least one monomer capable of forming an amorphous component in the whole polyester resin component and which has specific heat shrinkage characteristics and exhibits specific mechanical characteristics after heat shrinking treatment. The film can be produced by a sequential biaxial orientation process comprising longitudinal orientation step, intermediate heat treatment step, positive cooling step, transverse orientation step, and final heat treatment step.
- 来源网站：
- 中国工程科技知识中心
