Methods of making multi-layered bags with enhanced properties
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United States of America Patent
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Jun 6, 2017
Grant Date -
Dec 25, 2014
app pub date -
Sep 9, 2014
filing date -
Nov 16, 2009
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Abstract
Methods for creating multi-layered incrementally-stretched and incrementally-laminated bags with increased or maintained strength are described herein. An increased level of strength is achieved by bonding adjacent layers of a multi-layer film together in a manner that the bond strength of the laminated layers is less than a strength of a weakest tear resistance of the individual first and second film layers. The inventors have surprisingly found that such a configuration of light bonding provides increased and unexpected strength properties to the multi-layer film as compared to a monolayer film of equal thickness or a multi-layer film in which the plurality of layers are tightly bonded together.
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