Invention Application
- Patent Title: CLOTH-LIKE POLYMERIC FILM WITH DIRECTIONAL TEAR
- Patent Title (中): 具有方向性的类似聚酯薄膜
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Application No.: PCT/US2004/001302Application Date: 2004-01-20
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Publication No.: WO2004078869A1Publication Date: 2004-09-16
- Inventor: SHIOTA, Ko, , GETSCHEL, Joel A., , STROBEL, Mark A., , ULSH, Michael J., , RAY, Terry R.,
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY , SHIOTA, Ko, , GETSCHEL, Joel A., , STROBEL, Mark A., , ULSH, Michael J., , RAY, Terry R.,
- Applicant Address: 3M Center, Post Office Box 33427, Saint Paul, MN 55133-3427 US
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY,SHIOTA, Ko,,GETSCHEL, Joel A.,,STROBEL, Mark A.,,ULSH, Michael J.,,RAY, Terry R.,
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY,SHIOTA, Ko,,GETSCHEL, Joel A.,,STROBEL, Mark A.,,ULSH, Michael J.,,RAY, Terry R.,
- Current Assignee Address: 3M Center, Post Office Box 33427, Saint Paul, MN 55133-3427 US
- Agency: BLANK, Colene H.,
- Priority: US10/382,147 20030305
- Main IPC: C09J7/02
- IPC: C09J7/02
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.
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