Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hongyu Wu0
Date of Patent
April 14, 2009
0Patent Application Number
108019500
Date Filed
March 15, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for making a vacuum packaging film includes flowing a plastic melt, from a multi-layer extruder, onto a rotating roller. The plastic melt is then cooled while simultaneously imparting a pattern, via a pattern imparting means, onto the plastic melt resulting in the vacuum packaging film.
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