Tear resistant multilayer films and articles incorporating...

Details Tear resistant multilayer films and articles incorporating... Tear resistant multilayer films and articles incorporating...

B - Operations, Transporting

32

B

B32B 27/08 (2006.01) B32B 7/02 (2006.01) B32B 17/10 (2006.01) B32B 27/36 (2006.01) C03C 27/12 (2006.01)

Patent

CA 2106262

A tear resistant film comprises more than five layers situated one on the other in a parallel array. The layers are individually selected from a stiff polyester or copolyester, a ductile polymeric material, and optionally, an intermediate material. The stiff polyester or copolyester is oriented in at least one direction. Tear resistance may be measured in a Graves area test and reflects the ability of the film to absorb energy. The films of the invention are useful in many articles including security control laminates for glazing members.

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