B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 65/38 (2006.01) B65D 30/00 (2006.01) B65F 1/06 (2006.01)
Patent
CA 2597435
The present invention provides for a plastic sheet, especially one used in the construction of a plastic trash bag, which provides improved tear propagation properties. The plastic sheet has a plurality of protuberances in the plastic sheet, the protuberances defining a first set of substantially parallel curvilinear lines in a first direction, and optionally, a second set of curvilinear lines in a second direction. The plurality of protuberances can be either indentations or protrusions in the plastic sheet, preferably formed through an embossing process. Preferably, the protuberances are circular in shape, but not necessarily uniform, and alternate between indentations and protrusions along the first, and possibly the second, curvilinear lines with the curvilinear lines preferably being wave-shaped.
Mbm Intellectual Property Law Llp
Poly-America L.p.
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