Multilayer polyester film

Details Multilayer polyester film Multilayer polyester film

1996-03-08

1999-10-19

Chen, Vivian

Stock material or miscellaneous articles

Composite

Of polyester

428910, 2642902, B32B 2708, B32B 2736

Patent

active

059686669

ABSTRACT:
A multilayer polyester film, and a method for making the same, is provided. The film consists of alternating layers of polyethylene terephthalate and polyethylene naphthalate. Biaxial orientation and subsequent restrained heat setting of these materials results in thin films with tensile moduli in both stretch directions well in excess of the values obtained with monolithic films of either material. In some embodiments, a slippery surface is imparted to the film without the use of conventional slip agents.

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