公开(公告)号：US20070104931A1

公开(公告)日：2007-05-10

申请号：US10576478

申请日：2004-10-20

申请人： Hideki Ito ,  Norimi Tabota ,  Hisanobu Oda

发明人： Hideki Ito ,  Norimi Tabota ,  Hisanobu Oda

IPC分类号： B32B27/32

CPC分类号： C08J5/18 ,  B29C61/003 ,  B29C63/423 ,  B29K2067/00 ,  C08J2367/02

摘要： Provided is a heat-shrinkable polyester film satisfying: (A) a heat shrinkage percentage of 10% to 50% in a maximum shrinkage direction in a hot water at 70° C., (B) a heat shrinkage percentage of not less than 75% in a maximum shrinkage direction, and not more than 10% in an orthogonal to the maximum shrinkage direction in a hot water at 85° C., (C) a heat shrinkage percentage difference ΔX(%)=X0−X10 of a sample is 10% to 20%, wherein, X0 and X10 are defined as follows, X0(%): a heat shrinkage percentage in a maximum shrinkage direction in a hot water at 95° C.; and X10(%): a heat shrinkage percentage in a maximum shrinkage direction of a film having experienced heat shrink by 10% in a maximum shrinkage direction; (D) a three-dimensional surface roughness Δa gives 0.008 to 0.04; and (E) a three-dimensional surface roughness SRz gives 0.6 to 1.5 micrometers. Even in use for full label usage, the heat-shrinkable polyester film has excellent quality after shrink-finishing, reinforcement function of containers after wrapped by shrinking, and blocking resistance, and furthermore exhibits excellent film-formation property, and processability as well. In addition, the present invention provides a heat-shrinkable polyester film having ultraviolet absorptivity, and a heat-shrinkable polyester film roll exhibiting uniform heat shrinkage properties over whole of a long film.

摘要翻译： 提供一种热收缩性聚酯膜，其满足：（A）在70℃的热水中的最大收缩方向的热收缩率为10〜50％，（B）不低于75的热收缩率 在85℃的热水中最大收缩方向的最大收缩方向的最大收缩率为10％以下，（C）热收缩率差ΔX（％）= X <0 < 样品的重量比为10％至20％，其中X 0和X 10定义如下，X 0％（％）：在95℃的热水中的最大收缩方向的热收缩率。 和X 10（％）：在最大收缩方向上经历热收缩10％的膜的最大收缩方向的热收缩率; （D）三维表面粗糙度Deltaa为0.008〜0.04; 和（E）三维表面粗糙度SRz得到0.6-1.5微米。 即使用于全标签使用，热收缩性聚酯膜在收缩整理后具有优异的品质，通过收缩包裹后的容器的增强功能和抗粘连性，并且还表现出优异的成膜性和加工性。 此外，本发明提供了具有紫外线吸收性的热收缩性聚酯膜，以及在整个长膜上显示出均匀的热收缩性的热收缩性聚酯膜辊。