公开(公告)号：WO2004078869A1

公开(公告)日：2004-09-16

申请号：PCT/US2004/001302

申请日：2004-01-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY ,  SHIOTA, Ko, ,  GETSCHEL, Joel A., ,  STROBEL, Mark A., ,  ULSH, Michael J., ,  RAY, Terry R.,

Inventor： SHIOTA, Ko, ,  GETSCHEL, Joel A., ,  STROBEL, Mark A., ,  ULSH, Michael J., ,  RAY, Terry R.,

IPC: C09J7/02

CPC classification number: B32B3/266 ,  B29D7/01 ,  B32B27/08 ,  B32B27/32 ,  B32B2038/047 ,  B32B2307/518 ,  B32B2307/54 ,  B32B2307/7265 ,  B32B2323/046 ,  B32B2323/10 ,  B32B2405/00 ,  C09J7/22 ,  C09J7/243 ,  C09J7/29 ,  C09J2201/162 ,  C09J2201/20 ,  C09J2423/006 ,  Y10S493/963 ,  Y10T428/15 ,  Y10T428/24298 ,  Y10T428/24314 ,  Y10T428/28

Abstract: A polymeric film having a plurality of perforations (31a, 31b, 32a, 32b), which are specially structured and arranged is described. The polymeric film provides a strong, high-tensile strength material that permits hand tearing of the film along a desired tear path, providing a controlled tear propagation line. The polymeric film may also be incorporated into a multi-layer film having cloth-like properties of strength and tear propagation, and is suitable for use various adhesive tape applications. Methods of making the polymeric film are also disclosed.

Abstract translation: 描述了具有特殊结构和布置的多个穿孔（31a，31b，32a，32b）的聚合物膜。 聚合物膜提供强的高抗拉强度材料，其允许沿期望的撕裂路径手撕裂膜，从而提供受控的撕裂传播线。 聚合物膜也可以掺入具有布状强度和撕裂传播特性的多层膜中，并且适用于各种胶带应用。 还公开了制备聚合物膜的方法。