Bag

Patent metadata

Field	Value
Publication number	US-9604760-B2
Application number	US-54548409-A
Country	US
Kind code	B2
Filing date	Aug 21, 2009
Priority date	Aug 25, 2008
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

The bag may include a draw tape that may be used to cinch closed the opening of the bag. The draw tape may include an elastic characteristic and may be smaller in size than the peripheral distance about the opening. The draw tape in its natural contracted state may partially constrict the opening. However, the draw tape may be stretched or expanded to enable a user to dilate the opening and fold the periphery of the opening over the rim of the canister. The draw tape may then recover or constrict to grip about the rim of the receptacle to hold the bag to the canister. In one embodiment, the bag may include a pattern proximate the bag opening to allow the bag opening to be stretched over the rim of the canister.

First claim

The invention claimed is:

1. A thermoplastic bag comprising:
a first sidewall of pliable thermoplastic material;
a second sidewall of pliable thermoplastic material overlaying and joined to the first sidewall along a first side edge, an opposite second side edge, and a bottom edge extending between the first and second side edges to provide an interior volume, the interior volume accessible by an opening provided by first and second top edges of the respective first and second sidewalls;
a first draw tape in a first hem formed proximate the first top edge, the first draw tape attached to the bag at the first and second side edges and unattached to the bag between the first and second side edges such that the first draw tape can expand or stretch freely in the first hem,
wherein the first draw tape comprises a pre-stretched region the pre-stretched region being pre-stretched by elongating the first draw tape in a range of about 5% to about 50% to provide an elastic characteristic to the pre-stretched region, wherein the pre-stretched region is devoid of a pattern of ribs that form the elastic characteristic;
wherein the pre-stretched region with the elastic characteristic causes the first draw tape to partially constrict the opening of the bag when the first draw tape is in a relaxed state;
wherein the pre-stretched region comprises a pattern of linearly arranged ribs formed therein that modify the elastic characteristic of the pre-stretched region.

2. The thermoplastic bag of claim 1 , further comprising a second draw tape in a second hem formed proximate the second top edge, the second draw tape attached to the bag at the first and second side edges.

3. The thermoplastic bag of claim 1 , wherein the pattern of linearly arranged ribs allows the first draw tape to stretch in the lengthwise direction.

4. The thermoplastic bag of claim 3 , wherein the first draw tape when stretched has a length greater than a distance from the first side edge of the bag to the second side edge of the bag.

5. The thermoplastic bag of claim 1 , wherein at least one of the first or second thermoplastic sidewalls include a pattern of rib-like elements.

6. The thermoplastic bag of claim 5 , wherein the pattern of rib-like elements extends from proximate the top edges only partially toward the closed bottom edge.

7. The thermoplastic bag of claim 5 , wherein the pattern of rib-like elements comprises horizontally extending ribs, the pattern of rib-like elements allowing the first and second thermoplastic sidewalls to stretch in the height-wise direction.

8. The thermoplastic bag of claim 1 , wherein the pattern of linearly arranged ribs are offset from an upper longitudinal edge and a lower longitudinal edge of the first draw tape.

9. The thermoplastic bag of claim 1 , wherein the first draw tape causes the first hem to gather together when the first draw tape is in the relaxed state.

10. The thermoplastic bag of claim 1 , wherein first and second opposing end regions of the first draw tape are devoid of the pattern of linearly arranged ribs.

11. The thermoplastic bag of claim 10 , wherein the first and second opposing end regions of the first draw tape are heat sealed to the bag at the first and second side edges.

12. A thermoplastic bag comprising:
a first sidewall of pliable thermoplastic material;
a second sidewall of pliable thermoplastic material overlaying and joined to the first sidewall along a first side edge, an opposite second side edge, and a bottom edge extending between the first and second side edges to provide an interior volume, the interior volume accessible by an opening provided by a top edge;
a draw tape in a hem formed proximate the top edge, the draw tape attached to the bag at the first and second side edges and unattached to the bag between the first and second side edges such that the draw tape can expand or stretch freely in the hem,
wherein the draw tape is pre-stretched by elongating the draw tape in a range of about 5% to about 50% to provide an elastic characteristic to the draw tape, wherein the pre-stretched draw tape is initially devoid of a pattern of ribs that form the elastic characteristic;
wherein the pre-stretched draw tape further comprises a plurality of linearly arranged ribs that that modify the elastic characteristic of the draw tape;
wherein draw tape, wherein in a relaxed state, causes the hem to gather and the opening of the bag to partially constrict.

13. The thermoplastic bag as recited in claim 12 , wherein the drawtape, when in the relaxed state, causes the opening of the bag to constrict between 10% and 20%.

14. The thermoplastic bag as recited in claim 12 , wherein the plurality of linearly arranged ribs and the elastic characteristic allows the draw tape to stretch in the lengthwise direction.

15. The thermoplastic bag as recited in claim 14 , wherein the first and second thermoplastic sidewalls include a plurality of horizontally arranged ribs.

16. The thermoplastic bag as recited in claim 15 , wherein the plurality of horizontally arranged ribs provide the first and second sidewalls with an elastic characteristic and allow the first and second sidewalls to stretch in the height-wise direction.

17. The thermoplastic bag as recited in claim 14 , wherein the draw tape, when stretched, has a length greater than a distance from the first side edge of the bag to the second side edge of the bag.

18. The thermoplastic bag as recited in claim 17 , wherein the hem comprises a plurality of horizontally arranged ribs.

19. The thermoplastic bag as recited in claim 14 , wherein first and second opposing end regions of the draw tape are devoid of the pattern of linearly arranged ribs.

20. The thermoplastic bag as recited in claim 19 , wherein the first and second opposing end regions of the draw tape are heat sealed to the bag at the first and second side edges.

Assignees

• Kent Gregory S
• Waldron Matthew W
• Broering Shaun T
• Hoying David J
• Schroeder John
• Glad Products Co

Inventors

• Kent Gregory S
• Waldron Matthew W
• Broering Shaun T
• Hoying David J
• Schroeder John

Classifications

• B65D33/28 Primary

  Strings or strip-like closures {, i.e. draw closures} · CPC title

• B65F1/0006

  Flexible refuse receptables, e.g. bags, sacks · CPC title