公开(公告)号：US20040175527A1

公开(公告)日：2004-09-09

申请号：US10382147

申请日：2003-03-05

Applicant: 3M Innovative Properties Company

Inventor： Ko Shiota ,  Joel A. Getschel ,  Mark A. Strobel ,  Michael J. Ulsh ,  Terry R. Ray

IPC: B32B007/12

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, 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。

公开(公告)号：US20040070100A1

公开(公告)日：2004-04-15

申请号：US10267538

申请日：2002-10-09

Applicant: 3M Innovative Properties Company

Inventor： Mark A. Strobel ,  Michael J. Ulsh ,  Joel A. Getschel

IPC: B26F001/26

CPC classification number: B26F1/26 ,  Y10S425/037 ,  Y10T428/24273

Abstract: An apparatus and methods for flame-perforating films. A preferred embodiment of the apparatus includes a frame, support surface attached to the frame, where the support surface includes a plurality of lowered portions, a burner attached to the frame opposite the support surface, where the burner supports a flame, and where the flame includes a flame tip opposite the burner and a film contacting the support surface, where the flame of the burner is in contact with the film, where the burner is positioned such that the distance between an unimpinged flame tip of the flame and the burner is at least one-third greater than the distance between the film and the burner.

Abstract translation: 一种用于火焰穿孔膜的设备和方法。 该装置的优选实施例包括框架，附接到框架的支撑表面，其中支撑表面包括多个下降部分，附接到框架与支撑表面相对的燃烧器，其中燃烧器支撑火焰，并且其中火焰 包括与燃烧器相对的火焰末端和接触支撑表面的膜，其中燃烧器的火焰与膜接触，其中燃烧器被定位成使得火焰未燃烧的火焰尖端和燃烧器之间的距离在 比胶片和燃烧器之间的距离大至少三分之一。