Polymeric bags and method of forming polymeric bags
AssigneePoly-America, L.P.
InventorBrad A. Cobler
Life of this patent
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Abstract
The present invention relates to improvements for the manufacturing of a wave-cut bag of polymeric film, more specifically a wave-cut bag with a body having improved shock, tear and puncture resistance. The polymeric film has an embossed pattern of a plurality of embossed regions that are comprised of a plurality of parallel, linear embosses. Further disclosed is a process for intermittently applying the embossed pattern to a collapsed tube of a blown film extrusion process. The collapsed tube with the intermittently applied embossed pattern is particularly well suited for constructing wave-cut trash bags with the embossed pattern applied to a central body of the wave-cut bags.
Claims20
A bag formed from a collapsed tube of polymeric film, the bag comprising:
- first and second panels joined along a first side edge, a second side edge, and a bottom edge,
- the first panel having a first top edge opposite the bottom edge and the second panel having a second top edge opposite the bottom edge, the first and second top edges defining an opening of the bag,
- both the first and second top edges having a wave-shaped profile,
- an embossment boundary below the wave-shaped profile, the embossment boundary extending between the first and second side edges,
- an embossed section below the embossment boundary comprising an embossed pattern, the embossed pattern arranged such that the bag expands from the first to the second side edge when filled, and
- the polymeric film above the embossment boundary not embossed.
A bag formed from a collapsed tube of polymeric film, the bag comprising:
- first and second panels, the first and second panels extending from a first side edge to a second side edge,
- the first and second panels joined along the first side edge, the second side edge, and a bottom edge,
- the first and second panels each having a top edge opposite the bottom edge, the top edges defining an opening of the bag,
- each top edge having a wave-shaped profile,
- an upper embossment boundary below the wave-shaped profile, the upper embossment boundary extending from the first to the second side edge,
- a lower embossment boundary below the upper embossment boundary and above the bottom edge, the lower embossment boundary extending from the first to the second side edge,
- an embossed section extending between the upper and lower embossment boundaries,
- a first unembossed section extending from the upper embossment boundary to the wave-shaped profile and from the first side edge to the second side edge, the first unembossed section devoid of embossments, and
- a second unembossed section extending from the lower embossment boundary to the bottom edge and from the first side edge to the second side edge, the second unembossed section devoid of embossments.
Dependencies are inferred from the claim text.