Patch Bag Having Separated Tear Initiators
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United States of America Patent
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Issued Date -
Sep 25, 2014
app pub date -
Mar 19, 2013
filing date -
Mar 19, 2013
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Abstract
A patch bag has a heat-shrinkable patch adhered to a heat-shrinkable bag and a skirt between a heat seal and an edge of the bag. The bag is made from a multilayer film with at least one film layer comprising an incompatible polymer blend so that after shrinking the film exhibits controlled tear direction. The bag skirt has a bag tear initiator for initiating a controlled direction tear to the opposite side of the bag. The patch has an edge with a patch tear initiator separated from the bag tear initiator but positioned along a tear line emanating from bag tear initiator, so that upon tearing the shrunken bag, the controlled tear propagates into the patch tear initiator and thereafter the shrunken bag and the shrunken patch tear together towards an opposite edge of the patch.
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