Bag

Patent metadata

Field	Value
Publication number	US-9969534-B2
Application number	US-201514926334-A
Country	US
Kind code	B2
Filing date	Oct 29, 2015
Priority date	Aug 25, 2008
Publication date	May 15, 2018
Grant date	May 15, 2018

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 drawstring bag comprising:
a first sidewall and a second sidewall, the first sidewall and the second sidewall joined along a first side, a bottom, and a second side, the first sidewall and the second being un-joined along at least a portion of top of the first and second sidewalls thereby defining an opening of the bag;
a hem located along the opening of the bag in the first sidewall and the second sidewall;
a drawstring disposed within the hem;
the drawstring comprising a stretched draw tape film made from an un-stretched draw tape film subjected to a stretching process, wherein a relaxed length of the stretched draw tape is longer than a relaxed length of the un-stretched draw tape due to the stretching process; and
the stretched draw tape film having an elastic recovery that is greater than an elastic recovery of the un-stretched draw tape film.

2. The drawstring bag of claim 1 , wherein the stretched draw tape film has a tensile strength per square inch that is equal to a tensile strength per square inch of the pre-stretched draw tape film.

3. The drawstring bag of claim 1 , wherein the stretched draw tape film has a tensile strength greater than a tensile strength of the pre-stretched draw tape film.

4. The drawstring bag of claim 1 , wherein the stretched draw tape film, when in a relaxed state, constricts the opening of the bag.

5. The drawstring bag of claim 4 , wherein a width of the bag along the top of the first and second sidewalls is less than a width of the bag along the bottom when the stretched draw tape film is in the relaxed state.

6. The drawstring bag of claim 5 , wherein the stretched draw tape film is secured to the first sidewall and the second sidewall along a first side seal and a second side seal.

7. The drawstring bag of claim 6 , wherein the stretched draw tape film is unattached to the first hem between the first side seal and the second side seal such that the stretched draw tape film can expand or contract freely in the first hem.

8. The drawstring bag of claim 5 , wherein the width of the bag along the top of the first and second sidewalls is equal to the width of the bag along the bottom when the stretched draw tape film is in a tensioned state.

9. The drawstring bag of claim 8 , wherein the stretched draw tape film in the tensioned state has a width between 70 percent to 90 percent of a width of the stretched draw tape film in the relaxed state.

10. The drawstring bag of claim 8 , wherein the stretched draw tape film in the tensioned state has a length equal to 112.5 percent of a length of the stretched draw tape film in the relaxed state.

11. The drawstring bag of claim 1 , wherein a load required to elongate the stretched draw tape film by 20 percent is 67 percent of a load required to elongate the un-stretched draw tape film by 20 percent.

12. The drawstring bag of claim 1 , wherein the stretched draw tape film comprises linear low-density polyethylene and low-density polyethylene.

13. A drawstring 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 of the first and second sidewalls;
a hem formed proximate the top edge of the first and second sidewalls;
a draw tape positioned in the hem, 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; and
the draw tape comprising a stretched draw tape film made from an un-stretched draw tape film subjected to a stretching process that provides the stretched draw tape with an elastic characteristic such that the stretched draw tape film, when in a relaxed state, causes the hem to gather and the opening of the bag to partially constrict;
wherein a relaxed length of the stretched draw tape is longer than a relaxed length of the un-stretched draw tape due to the stretching process.

14. The drawstring bag of claim 13 , wherein the stretched draw tape film has an elastic recovery that is greater than an elastic recovery of the un-stretched draw tape film.

15. The drawstring bag of claim 13 , wherein a width of the bag along the top of the first and second sidewalls is less than a width of the bag along the bottom when the stretched draw tape film is in the relaxed state.

16. The drawstring bag of claim 15 , wherein:
the stretched draw tape film is secured to the first sidewall and the second sidewall along a first side seal and a second side seal; and
the stretched draw tape film is unattached to the first hem between the first side seal and the second side seal such that the stretched draw tape film can expand or contract freely in the first hem.

17. The drawstring bag of claim 16 , wherein the stretched draw tape film in a tensioned state has a width equal to 70 percent to 90 percent of a width of the stretched draw tape film in the relaxed state.

18. The drawstring bag of claim 17 , wherein the stretched draw tape film in the tensioned state has a length equal to 112.5 percent of a length of the stretched draw tape film in the relaxed state.

19. The drawstring bag of claim 13 , wherein a load required to elongate the stretched draw tape film by 20 percent is 67 percent of a load required to elongate the un-stretched draw tape film.

20. The drawstring bag of claim 13 , wherein the stretched draw tape film comprises linear low-density polyethylene and low-density polyethylene.

Assignees

• Glad Products Co

Inventors

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

Classifications

• B65F1/0006

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

• B65D33/28 Primary

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