Method of preparing laminated packaging material

Details Method of preparing laminated packaging material Method of preparing laminated packaging material

1993-06-10

1994-05-24

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624423, 156324, B29C 4704

Patent

active

053145615

ABSTRACT:
A method of preparing a laminated packaging material, comprising forming an extruded coating layer of a thermoadhesive resin on a thin-film layer provided on a substrate, said thin-film layer comprising an inorganic or metal compound and having gas barrier properties. The thin-film layer is laminated thereon with a heat buffer layer in such a way that the substrate may substantially undergo no expansion and constriction, e.g., by dry lamination or non-solvent lamination. Then the extruded coating layer is formed on the heat buffer layer, after an anchor coat layer has been optionally formed on the heat buffer layer. Such a heat buffer layer is preferably selected from the group consisting of a polyester film, a polyethylene film, a polypropylene film and a polyamide film.

REFERENCES:
patent: 4424256 (1984-01-01), Christensen et al.
patent: 4488924 (1984-12-01), Krieg
patent: 4894291 (1990-01-01), Ofstein

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