Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Patent
1992-02-18
1993-10-26
Buffalow, Edith
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
4284744, 428522, 428910, 428480, 264164, B32B 2700
Patent
active
052564916
ABSTRACT:
In one aspect of the invention, there is provided a molded article of crystalline thermoplastic resin with high gas barrier property of which the resin has crystalline and non-crystalline regions, the enhancing effect on gas barrier property of uniaxial-uniplanar orientation of the crystal axis direction of crystallites of said crystalline regions being used and the crystallites orientation being optimized by specific conditions. In another aspect of the invention, the molded article of the first aspect of the invention is further annealed to increase the crystallinity of the crystalline regions. The molded articles in accordance with the present invention have excellent gas barrier properties, and they are not only useful as chilled beef packaging materials, but also useful for retort food packaging, pouch packaging, coating and protecting materials for ham and sausages, processed fish, processed seafood products such as boiled fish paste, dried food for sprinkling, soup powder, parched rice cake, curry powder, spices, vegetables, fruits and pharmaceuticals.
Ishida Takashi
Kimura Masato
Takahashi Tomonori
Buffalow Edith
Nippon Petrochemicals Co. Ltd.
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