Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1992-01-06
1993-08-03
Thibodeau, Paul J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
4284761, 4284763, 4284769, 428518, 428520, 428910, 522110, 522111, 522121, B32B 2732, B32B 2734
Patent
active
052327671
ABSTRACT:
A biaxially stretched heat-shrinkable laminated film is disclosed which possesses good heat-shrinkability, excellent melt hole resistance and heat-resistant sealing property (the heat resistance of a seal portion), and highly satisfactory cold resistance, retains transparency even after shrinkage, and serves advantageously as a wrap for packaging foodstuffs. The laminated film is provided as an oxygen barrier layer with a layer of a mixture of vinylidene chloride resin and a low melting point polyamide resin having a crystalline melting point of not higher than 210.degree. C. This mixed resin has been cross-linked by applying the electron beam to the laminate in a dosage in the range of 1 to 12 megarads. The laminated film exhibits a heat shrinkage percentage of not less than 15% at 90.degree. C. and excels in gas barrier property.
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Hirose Kazuhiko
Hisazumi Nobuyuki
Matsukura Yoshihiro
Ohba Hiroyuki
Shibuya Kunio
Kureha Kagaku Kogyo Kabushiki Kaisha
Nakarani D. S.
Thibodeau Paul J.
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