Multilayer biaxially oriented heat set articles and method...

Details Multilayer biaxially oriented heat set articles and method... Multilayer biaxially oriented heat set articles and method...

B - Operations, Transporting

32

B

154/140, 18/514

B32B 27/28 (2006.01) B29C 49/22 (2006.01) B29C 49/64 (2006.01) B32B 27/08 (2006.01) B32B 27/36 (2006.01)

Patent

CA 1291701

MULTILAYER BIAXIALLY ORIENTED HEATSET ARTICLES AND METHOD OF MAKING Abstract of the Disclosure A multilayer biaxially oriented heatset article and method of making forming a preform comprising an outer layer and an inner layer of poly(ethylene terephthalate) (PET), an intermediate layer of olefin-vinyl alcohol copolymer, a layer of adhesive laminating the olefin-vinyl alcohol copolymer layer and the outer layer and a layer of adhesive laminating the inner olefin-vinyl alcohol copolymer layer and the inner layer. The preform is then heated to orientation temperature and blown against a heatset hot mold to produce an article such as a container that has high barrier properties, improved thermal stability, i.e., capable of being hot filled at elevated temperatures, have layer uniformity, good interlayer adhesion, good transparency and is light in weight.

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