发明名称 |
HEAT-SHRINKABLE POLYESTER FILM AND PRODUCTION THEREOF |
摘要 |
PROBLEM TO BE SOLVED: To obtain a heat-shrinkable polyester film extremely reduced in the occurrence of wrinkles, shrinkage irregularity and strain after shrinkage and excellent in the breakage resistance against an impact. SOLUTION: A stretched film composed of polyester wherein a terephthalic acid component among dicarboxylic acid components is 70mol% or more and an ethylene glycol component among diol components is 70mol% is characterized by that the max. value (σmax) of shrinkage stress in a main shrinkage direction at 90 deg.C is 0.5-1.2kg/mm<2> and a heat shrinkage factor in the main shrinkage direction in hot water is 40% or less at 75 deg.C and 50% or more at 95 deg.C. |
申请公布号 |
JPH09239833(A) |
申请公布日期 |
1997.09.16 |
申请号 |
JP19960078225 |
申请日期 |
1996.03.05 |
申请人 |
TOYOBO CO LTD |
发明人 |
MORI KUNIHARU;ISAKA TSUTOMU;KUZE KATSURO;OKUMURA SHINICHIRO;EZAKI HIROAKI;TAKABAYASHI SEIZO |
分类号 |
C08J5/18;B29C61/06;B29K67/00;B29K105/02;(IPC1-7):B29C61/06 |
主分类号 |
C08J5/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|