| 摘要 |
<p>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.</p> |
| 申请人 |
3M INNOVATIVE PROPERTIES COMPANY;SHIOTA, KO,;GETSCHEL, JOEL A.,;STROBEL, MARK A.,;ULSH, MICHAEL J.,;RAY, TERRY R., |
发明人 |
SHIOTA, KO,;GETSCHEL, JOEL A.,;STROBEL, MARK A.,;ULSH, MICHAEL J.,;RAY, TERRY R., |
