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US 11,305,927 B2Granted
Easy open plastic bags
AssigneePolytex Fibers Corporation
InventorsJacobo Bazbaz, Alberto Zaroli
Life of this patent
Estimating the term…
Abstract
A woven laminated plastic bag having features that prevent leakage of contents out of the bag, or infestation of organisms into the contents of the bag is provided. The bag can provide a top end and a bottom end that provide a discrete area that may contain discrete graphics or printing. The bag can also include an easy open feature that can be easily opened with less force than a sealed closure of the bag. The easy open feature may be oriented in various directions with respect to the bag.
Claims27
A bag comprising:
- a front wall, a back wall, a first side wall, and a second side wall, wherein the first side wall and the second side wall are disposed on opposite sides of the front wall and the back wall and connect the front wall to the back wall, forming the bag having a top end and a bottom end;
- wherein each of the front wall, the back wall, the first side wall and the second side wall comprise at least two laminated layers further comprising (i) a first layer comprising woven oriented polypropylene or polyethylene strips, and (ii) a second layer comprising an oriented polypropylene or polyethylene film;
- and
- wherein a portion of the front wall is folded over an end of the bag and sealed to an exterior surface of the back wall, or wherein a portion of the back wall is folded over an end of the bag and sealed to an exterior surface of the front wall, to form a sealed closure of the bag;
- and
- an easy open feature on the front wall of the bag, and wherein the easy open feature is oriented vertically or diagonally with respect to the top end of the bag, and wherein the easy open feature comprises a plurality of cuts or perforations penetrating at least partially through the front wall of the bag, and wherein the plurality of cuts or perforations define a curved central portion defining a concave side and a convex side, and further define a first line extending in a first direction from the curved central portion and a second line extending in a second direction from the curved central portion, wherein the first line and the second line define an obtuse angle with respect to the concave side of the curved central portion.
3 more elements
A bag comprising:
- a front wall, a back wall, a first side wall, and a second side wall, each having an interior surface and an exterior surface and a first end and a second end,
- wherein the first end of the back wall extends beyond the first end of the front wall and is adapted to fold over the first end of the front wall and form an overlay portion,
- wherein each of the front wall, the back wall, the first side wall, and the second side wall comprises a first layer and a second layer, and wherein the first layer and the second layer comprise polyethylene, polypropylene, or a combination thereof, and wherein the first layer and the second layer are laminated together;
- and
- an easy open feature on a wall of the bag, wherein the easy open feature is oriented vertically or diagonally with respect to either the first end or the second end of the bag, and wherein the easy open feature comprises a plurality of cuts or perforations penetrating at least partially through the front wall of the bag, and wherein the plurality of cuts or perforations define a curved central portion defining a concave side and a convex side, and further define a first line extending in a first direction therefrom and a second line extending in a second direction therefrom, wherein the first line and the second line further define an obtuse angle with respect to the concave side of the curved central portion, and wherein the cuts or perforations enable opening of the bag with less force than required for opening a sealed closure at the first end or second end of the bag.
2 more elements
Dependencies are inferred from the claim text.