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Cloth-like polymeric film with directional tear
   
Document Number
US Patent 7138169
Issued Date
November 21, 2006
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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.
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Number of Claims:
31
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Published
November 21, 2006
Application Number
10/382,147
Filed
March 5, 2003
US Classification
428/134   428/136 428/43 493/342 493/963
Int'l Classification
B32B   3/24   (20060101)   B32B   7/12   (20060101)  
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USPTO Field of Search
428/43   428/134   428/136   493/963   493/342  
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