Extended hem fold drawstring bag

Patent metadata

Field	Value
Publication number	US-10934058-B2
Application number	US-201514883680-A
Country	US
Kind code	B2
Filing date	Oct 15, 2015
Priority date	Aug 31, 2011
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

The present invention is directed to a thermoplastic bag comprised of a front panel and a back panel. The front panel and back panel are generally joined along a first side edge, a second side edge, and a bottom edge of the respective front panel and back panel. The front panel has a distal edge with the distal edge folded over the front panel to provide a hem and an overlap area immediately below the first hem. The overlap area comprises at least two layers of polymeric film which are sealed together.

First claim

What is claimed is:

1. A thermoplastic bag comprising:
a front panel and a back panel defined in a single piece of thermoplastic film, the front panel and back panel joined at a bottom edge defined by a fold in the single piece of thermoplastic film,
the front panel and back panel joined by a first side seal generally along a first side edge and by a second side seal generally along a second side edge, the first side seal having a first side seal width and the second side seal having a second side seal width,
a distance from the first side seal to the second side seal defining a bag width,
a folded over upper portion of the front panel defining a folded upper edge, the folded upper edge defining an upper opening of the thermoplastic bag,
the thermoplastic bag defining a single open compartment extending from the upper opening to the bottom edge,
a first hem and a first overlap area defined between the folded over upper portion and the front panel, the first overlap area below the first hem,
a first hem seal between the first hem and the first overlap area, the first hem seal extending generally from the first side seal to the second side seal and having a first hem seal length,
a first hem height extending from the folded upper edge to the first hem seal,
a first lower seal proximate to a distal edge of the folded over upper portion, the first lower seal sealing the folded over upper portion to the front panel, the first lower seal extending generally from the first side seal to the second side seal and having a first lower seal length,
the first lower seal below the first hem seal and above the distal edge of the folded over upper portion,

the distal edge of the folded over upper portion above and separate from the bottom edge,
a first overlap height extending from the first hem seal to the distal edge of the folded over upper portion, the first overlap height greater than the first hem height,
a first total seal length defined by summation of the first hem seal length and the first lower seal length, the first total seal length greater than the bag width,
a first drawstring disposed within the first hem, and
a first enclosed overlap area defined by the first overlap area, the front panel, the first hem seal and the first lower seal, the first enclosed overlap area devoid of a drawstring.

2. The thermoplastic bag of claim 1 further comprising:
the first hem seal length and the first lower seal length each generally equal to the bag width.

3. The thermoplastic bag of claim 1 further comprising:
the width of the first short seal greater than the width of the second side seal.

4. The thermoplastic bag of claim 1 further comprising:
a second short seal anchoring the first drawstring to the first hem proximate to the second side seal, the second short seal having a width greater than the second side seal width, a height of the second short seal less than a height from the folded upper edge to the first lower seal.

5. The thermoplastic bag of claim 4 further comprising:
the width of the second short seal greater than the first side seal width.

6. A thermoplastic bag comprising:
a front panel and a back panel defined in a single piece of thermoplastic film, the front panel and back panel joined at a bottom edge defined by a fold in the single piece of thermoplastic film,
the front panel and back panel joined by a first side seal generally along a first side edge and by a second side seal generally along a second side edge,
a distance from the first side seal to the second side seal defining a bag width,
a folded over upper portion of the front panel defining a folded upper edge, the folded upper edge defining an upper opening of the thermoplastic bag,
the thermoplastic bag defining a single open compartment extending from the upper opening to the bottom edge,
a first hem and a first overlap area defined between the folded over upper portion and the front panel, the first overlap area below the first hem,
a first hem seal between the first hem and the first overlap area, the first hem seal extending generally from the first side seal to the second side seal and having a first hem seal length,
a first hem height extending from the folded upper edge to the first hem seal,
a first lower seal proximate to a distal edge of the folder over upper portion, the first lower seal sealing the folded over upper portion to the front panel, the first lower seal extending generally from the first side seal to the second side seal and having a first lower seal length,
the first lower seal below the first hem seal and above the distal edge of the folded over upper portion,
the distal edge of the folded over upper portion above and separate from the bottom edge,
a first overlap height extending from the first hem seal to the distal edge of the folded over upper portion, the first overlap height greater than the first hem height,
a total seal length defined by summation of the first hem seal length and the first lower seal length, the total seal length greater than the bag width,
a first drawstring disposed within the first hem,
a first drawstring cutout defined within the first hem between the first side seal and the second side seal, the first drawstring accessible only via the first drawstring cutout, and
a first enclosed overlap area defined by the first overlap area, the front panel, the first hem seal and the first lower seal, the first enclosed overlap area devoid of a drawstring.

7. The thermoplastic bag of claim 6 further comprising:
the first overlap height at least twice the first hem height.

8. The thermoplastic bag of claim 6 further comprising:
the first hem seal length and the second seal length both generally equal to the bag width.

9. The thermoplastic bag of claim 6 further comprising:
the first drawstring cutout located centrally between the first side seal and the second side seal.

10. The thermoplastic bag of claim 6 further comprising:
a first short seal permanently anchoring the first drawstring within the first hem proximate to the first side seal and a second short seal permanently anchoring the first drawstring within the first hem proximate to the second side seal.

11. A thermoplastic bag comprising:
a front panel and a back panel defined in a single piece of thermoplastic film, the front panel and back panel joined at a bottom edge defined by a fold in the single piece of thermoplastic film,
the front panel and back panel joined by a first side seal generally along a first side edge and by a second side seal generally along a second side edge,
a distance from the first side seal to the second side seal defining a bag width,
a folded over upper portion of the front panel defining a folded upper edge, the folded upper edge defining an upper opening of the thermoplastic bag,
a first hem and a first overlap area defined between the folded over upper portion and the front panel, the first overlap area below the first hem,
a first hem seal between the first hem and the first overlap area, the first hem seal extending generally from the first side seal to the second side seal and having a first hem seal length,
a first hem height extending from the folded upper edge to the first hem seal,
a first lower seal proximate to a distal edge of the folder over upper portion, the first lower seal sealing the folded over upper portion to the front panel, the first lower seal extending generally from the first side seal to the second side seal and having a first lower seal length,
the first lower seal below the first hem seal and above the distal edge of the folded over upper portion,
the distal edge of the folded over upper portion

Assignees

• Poly America Lp

Inventors

• Cobler Brad A

Classifications

• B65F1/002

  with means for opening or closing of the receptacle · CPC title

• B65D33/28 Primary

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

• B65D33/02

  Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames {(B65D33/007 takes precedence)} · CPC title