Composite polymer films

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11660844
APP PUB NO 20200269552A1
SERIAL NO

16650922

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Abstract

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A composite film includes a) a self-supporting layer of a polymer film (such as a polyester), b) an optional primer layer on the polymer film layer, wherein the primer layer includes a PVdX (X being halo), acrylic or vinyl resin; and c) a layer of heat seal composition on the primer layer, wherein the heat seal composition includes a polyolefin plastomer (POP) resin and a tackifier that constitutes at least 20 wt % of the heat seal composition. The composite film may be formed by applying a coating composition including the heat seal composition in a solvent to a primer layer on the polymer film or directly on the polymer film in absence of the optional primer layer, and then evaporating the solvent. The composite film may be heat-sealed to a surface of a container or a self-supporting film.

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Patent Owner(s)

  • DUPONT TEIJIN FILMS U.S. LIMITED PARTNERSHIP

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Deng, Fenghua Richmond, US 19 150
Liu, Shengsheng Glen Allen, US 39 466
Robinson, Julian Neal North Yorkshire, GB 12 97
Tayler, Moira Redcar, GB 3 0

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