Process for the production of coated polymeric film
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United States of America Patent
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Sep 6, 2005
Grant Date -
Apr 8, 2004
app pub date -
Jan 25, 2002
filing date -
Jan 25, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for producing a heat-sealable polymeric film comprises the steps of: (a) melt-extruding a substrate layer of polymeric material; (b) stretching the substrate layer in a first direction; (c) optionally stretching the substrate layer in a second, orthogonal direction; (d) optionally heat-setting the stretched substrate layer; (e) forming a heat-sealable coating layer on a surface of the substrate layer by melt-coating directly thereon a molten polymeric material; and (f) cooling the coated substrate layer;
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