Multilayers laminate serving as a good barrier against an oxygen gas or the like and heat-sealable packing material comprising the same
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United States of America Patent
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Mar 17, 1998
Grant Date -
N/A
app pub date -
Feb 20, 1996
filing date -
May 2, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multilayered laminate, which comprises a plastic substrate, a thin film of a metal or a metal oxide, formed on a surface of the substrate, and a layer formed on a surface of the thin film, the layer being selected from the group consisting of: (a) a polyvinyl alcohol copolymer emulsion, obtained by aqueous emulsion polymerization of a vinyl acetate monomer, an ethylene monomer and a polyvinyl alcohol; (b) a resin emulsion composition obtained by mixing (i) a polyvinyl alcohol copolymer emulsion, obtained by aqueous emulsion polymerization of a vinyl acetate monomer, an ethylene monomer and a polyvinyl alcohol with (ii) an aqueous solution of polyvinyl alcohol resin; (c) saponified resin of olefin-vinyl acetate copolymer; (d) polyamide resin; and (e) polyvinyl alcohol resin, and a heat-sealable packaging material based on the multilayered laminate.
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