Polyester film laminate with enhanced impact and tear...

Details Polyester film laminate with enhanced impact and tear... Polyester film laminate with enhanced impact and tear...

2005-10-04

2005-10-04

Chen, Vivian (Department: 1773)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S250000, C156S259000, C156S260000, C156S263000, C156S264000, C156S269000, C156S271000, C156S297000, C156S299000, C156S300000, C156S301000, C156S302000, C156S308200, C428S426000, C428S105000, C428S480000, C428S910000

Reexamination Certificate

active

06951595

ABSTRACT:
A method of forming a reinforced polymer film structure is disclosed that includes the steps of slitting a biaxially oriented polymer film web having a top face and a bottom face into a first portion and a second portion, identifying the first portion and the second portion, and placing the first portion atop the second portion, such that the bottom face of the first portion is adjacent the top face of the second portion. This structure provides an impact and tear resistant laminate. Also disclosed is a method of forming a polymer film structure by identifying a molecular orientation direction profile of two portions of biaxially oriented polymer film and layering the two portions such that a molecular orientation direction profile of one does not coincide with a molecular orientation direction profile of the other.

REFERENCES:
patent: 4439260 (1984-03-01), Canterino et al.
patent: 4474634 (1984-10-01), Hiraoka et al.
patent: 4475971 (1984-10-01), Canterino
patent: 5091258 (1992-02-01), Moran
patent: 5350471 (1994-09-01), Planeta
patent: 5618630 (1997-04-01), Benoit et al.
patent: 5626944 (1997-05-01), Rasmussen
patent: 6284344 (2001-09-01), Barnes et al.
patent: 6713185 (2004-03-01), Carlson et al.

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