Stock material or miscellaneous articles – Hollow or container type article – Shrinkable or shrunk
Reexamination Certificate
2007-08-14
2007-08-14
Dye, Rena (Department: 1772)
Stock material or miscellaneous articles
Hollow or container type article
Shrinkable or shrunk
C428S034800, C428S035100, C428S035200, C383S113000, C383S119000, C383S908000, C426S124000, C426S127000, C426S129000
Reexamination Certificate
active
09426827
ABSTRACT:
A patch bag has a heat-shrinkable patch adhered to a heat-shrinkable bag. The patch comprises an ethylene/alpha-olefin copolymer having a density greater than about 0.915 g/cm3, this copolymer being present in the patch in an amount of at least about 5 percent, based on a total patch weight. The patch also comprises a heterogeneous ethylene/alpha-olefin copolymer having a density of less than about 0.915 g/cm3, which is also present in the patch in an amount of at least about 5 percent, based on total patch weight. In addition, the two ethylene/alpha-olefin copolymers make up at least 70 percent of the total patch weight. VLDPE is a preferred heterogeneous ethylene/alpha-olefin less than 0.915 g/cc, and LLDPE is a preferred ethylene/alpha-olefin greater than 0.915 g/cc. The patch film can be selected to exhibit a total free shrink and/or bone-puncture resistance which is higher than either VLDPE or LLDPE alone. The patch film can be selected to exhibit Standard Rib Drop Test results (i.e., puncture-resistance in actual use) superior to other patch bags.
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Mudar Kimberly Ann
Ramesh Ram Kumar
Cryovac Inc.
Dye Rena
Hon Sow-Fun
Hurley Jr. Rupert B.
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