ORIENTED TEAR ZONE FOR A PLASTIC FILM
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United States of America Patent
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Issued Date -
Apr 29, 2010
app pub date -
Mar 17, 2008
filing date -
Mar 24, 2007
priority date (Note) -
Abandoned
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Abstract
The invention relates to a plastic film (3) including a pre-existing oriented tear zone (11, 7), characterised in that the zone (11, 7) comprises a butt weld (7) which assembles one end of the plastic film (9) with another end of the plastic film (10), said weld zone being disposed in the thickness of one or more of the welding layers of the plastic film (3). The invention also relates to a method and a device for producing said plastic film.
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