Longitudinally stretched, vacuum vapor coated packaging films
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United States of America Patent
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Apr 29, 2003
Grant Date -
Aug 16, 2001
app pub date -
Jan 24, 2001
filing date -
Feb 4, 2000
priority date (Note) -
Expired
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Abstract
A longitudinally stretched multilayered film having good barrier properties is described. The film is prepared by a process comprising (a) preparing by coextrusion a laminate structured of, in sequence, a first polyamide layer, an EVOH layer, and a second polyamide layer, and (b) longitudinally stretching the laminate and (c) applying by vacuum vapor deposition to one of the surfaces of the stretched laminate an inorganic layer.
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