US3547341A - Draw string bag - Google Patents

Draw string bag Download PDF

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Publication number
US3547341A
US3547341A US810508A US3547341DA US3547341A US 3547341 A US3547341 A US 3547341A US 810508 A US810508 A US 810508A US 3547341D A US3547341D A US 3547341DA US 3547341 A US3547341 A US 3547341A
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United States
Prior art keywords
bag
string
channels
tape
channel
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Expired - Lifetime
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US810508A
Inventor
George Fred Kirkpatrick
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Glad Products Co
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Union Carbide Corp
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Publication of US3547341A publication Critical patent/US3547341A/en
Assigned to MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. reassignment MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. MORTGAGE (SEE DOCUMENT FOR DETAILS). Assignors: STP CORPORATION, A CORP. OF DE.,, UNION CARBIDE AGRICULTURAL PRODUCTS CO., INC., A CORP. OF PA.,, UNION CARBIDE CORPORATION, A CORP.,, UNION CARBIDE EUROPE S.A., A SWISS CORP.
Assigned to FIRST BRANDS CORPORATION, 39 OLD RIDGEBURY RD., DANBURY, CT 06817 A CORP OF DE reassignment FIRST BRANDS CORPORATION, 39 OLD RIDGEBURY RD., DANBURY, CT 06817 A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNION CARBIDE CORPORATION, A CORP OF NY
Assigned to UNION CARBIDE CORPORATION, reassignment UNION CARBIDE CORPORATION, RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MORGAN BANK (DELAWARE) AS COLLATERAL AGENT
Assigned to MANUFACTURERS HANOVER TRUST COMPANY reassignment MANUFACTURERS HANOVER TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FIRST BRANDS CORPORATION, A CORP OF DE
Anticipated expiration legal-status Critical
Assigned to FIRST BRANDS CORPORATION reassignment FIRST BRANDS CORPORATION RELASE OF SECURITY INTEREST RECORDED AT REEL 4645 AND FRAME 280-363 ON 12-08-1986. Assignors: MANUFACTURERS HANOVER TRUST COMPANY
Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/28Strings or strip-like closures, i.e. draw closures

Definitions

  • a draw string bag has an open mouth defined by tubular channels extending along the transverse top edges of the front and back walls of the bag. One of the channels has an opening at one longitudinal edge of the bag and the other channel has an opening at the other, opposite longitudinal edge of the bag.
  • a separate string extends through each chan nel, one end of each string being attached to one of the opposite longitudinal edges of the bag and the other end of each string protruding through the transversely opposite opening.
  • the strings are pulled in opposite direction whereby the channels are gathered tightly and regularly and the free ends of the strings are tied easily to each other.
  • This invention relates to draw string bags.
  • a portion of the resulting double endless string extends through the open ends of the channels.
  • Two loops of a single portion of the string, one on each side of the bag, are simultaneously pulled in opposite directions, whereby the tubular channels are caused to gather and the mouth of the bag is closed.
  • These simple closures present some disadvantages, particularly when the bag is formed of a plastic film. When said film is thin, there is a risk of tearing the channels when pulling the string.
  • the plastic film defining the channels has a tendency to spring back to its original flat condition afterthe channels have been gathered and, in order to keep the mouth of the bag closed, the hanging loop has to-be tied into a knot. It is somewhat difficult to tie a loop of string into a knot in such a manner that the knot is placed close against the gathered channels.
  • a new and improved draw string bag having an open mouth defined by tubular channels extending along opposed transverse top edges of front and back walls of the bag.
  • the essential characteristics of the invention are that one of the channels has an opening placed on a longitudinal edge of the bag while the other channel has an opening placed on the opposite longitudinal edge of I the bag and that a separate string extends through each channel.
  • One end of thev string protrudes through the open end of the channel while the other end of said string is attached to the longitudinal edge of the bag opposite said open end.
  • the strings are pulled in opposite directions which results in a more regular and tighter gathering of the channels and a better distribution of the pulling force exerted on said channels, whereby the risk of tearing the channels is eliminated.
  • the expression string used herein and in the appended claims means a length of any flexible material which might be employed to close the bag. It may be a length of rope, cord, ribbon or tape. The string may be solid, or in tubular form.
  • FIG. 1 is a front view of one embodiment of the draw string bag of the invention
  • FIG. 2 is a cross-sectional view taken at 2-2 of FIG. 1 on an enlarged scale
  • FIG. 3 is a front view of another embodiment of the draw string bag of the invention.
  • FIGS. 1 and 2 There is shown in FIGS. 1 and 2 an openjdraw. string bag made of a single sheet of heat scalable film material such as a thermoplastic film folded uponitself; to form a front wall 12 and a back wall 14. The front and back walls-are'heat sealed to each other along their superimposed edges to form longitudinal edges 13 and 15 of the bag 10.
  • the bag since the bag is formed of a single sheet, there is no'transverse heat seal at the bottom of the bag.
  • the openings 19 and 21 are formed by cutting out a portion of each upper edge of the bag through both channels, in such a manner that the opening 19 is also an opening for the channel 20 and the opening 21 is also an opening for the channel 18.
  • the bag 10 is closed simply by simultaneously pulling the free end of each .tape in opposite directions which causes the channels to simultaneously shirr and gather. Once the mouth of the bag is closed, the tapes 22 and 24 may easily be tied to each other.
  • FIGS. 3 and 4 Another embodiment of the draw string bag of the invention is illustrated in FIGS. 3 and 4.
  • the difference between this embodiment and the embodiment shown in FIGS. 1 and 2 is that, instead of being offset, the tapes extend in the same plane, each in its own channel.
  • a bag 30 has the same construction as the bag 10, withchannels l8 and 20 defining the mouth of the bag 30.
  • a tape 32 extends through the channel 18 and a tape 34 extends through the channel 20 in the same plane as the tape 32.
  • the channel 18 has an opening 29 at the edge 13 of the bag 30 through which one end of the tape 32 extends, the other end of the tape being heat sealed to the opposite edge 15 of the bag.
  • the channel 20 has an opening 31 at the edge 15 of the bag 30 through which one end of the tape 34 extends while the other end of said tape is heat sealed to the opposite edge 13 of the bag.
  • the opening 29 is formed by cutting out an edge portion of the channel 18 only, and the opening 31 by cutting out an edge portion of the channel 20 only, see FIG. 3.
  • the bag 30 is closed simply by simultaneously pulling the free ends of the tapes 32 and 34 in opposite directions to cause channels 18 and 20 to gather as in the first embodiment and the tapes are tied to each other, if desired.
  • the string may be made of synthetic or natural fibers and sewn to the edges of the bag.
  • the string may be in the form of a rope, or a cord, or a ribbon, for example.
  • the bag illustrated in the accompanying drawing is a flat bag, but the invention is not limited thereto. Other types of bags may be employed, with the draw strings disposed in separate channels in the same manner as in the flattype bag illustrated.
  • a draw string bag which comprises:
  • tubular channels extending along opposed transverse top edges of said front wall and back wall, respectively, said channels defining an open mouth for the bag, each of 5 4 opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Description

United States Patent [72] Inventor George Fred Kirkpatrick Middlesex, NJ. [21] Appl. No. 810,508 [22] Filed March 26, 1969 [45] Patented Dec. 15, 1970 [73] Assignee Union Carbide Corporation New York, N.Y. a corporation of New York [54] DRAW STRING BAG 4 Claims, 4 Drawing Figs.
[52] U.S. Cl 229/63, 150/1 1 [51 Int. Cl, 865d 33/28 [50] Field of Search 229/63; 229/63: 150/11 [56] References Cited UNITED STATES PATENTS 3,010,640 11/1961 Kugler 229/63 3,013,597 12/1961 Moran 3,196,757 7/1965 Samways ABSTRACT: A draw string bag has an open mouth defined by tubular channels extending along the transverse top edges of the front and back walls of the bag. One of the channels has an opening at one longitudinal edge of the bag and the other channel has an opening at the other, opposite longitudinal edge of the bag. A separate string extends through each chan nel, one end of each string being attached to one of the opposite longitudinal edges of the bag and the other end of each string protruding through the transversely opposite opening. The strings are pulled in opposite direction whereby the channels are gathered tightly and regularly and the free ends of the strings are tied easily to each other.
YXXXXXX 1 DRAW STRING BAG This invention relates to draw string bags.
Draw string bags generally comprise a bag of a flexible material, such as a thermoplastic film, a fabric material and the like. The bag has a mouth with open-ended tubular channels formed transversely on each wall of the bag adjacent said mouth and communicating with each other. A string, cord or tape is passed once, and extends, through the channels, both ends of said string, cord or tape being joined to each other to form an endless string. A portion of the string (cord or tape) extends through the open ends of the channels. The string may be pulled in one direction with one hand to form a loop while with the other hand the user pushes the tubular channels in the opposite direction, thus closing the mouth of the bag. Altematively, the string may be passed twice through the channels before both ends of said string are joined to each other. A portion of the resulting double endless string extends through the open ends of the channels. Two loops of a single portion of the string, one on each side of the bag, are simultaneously pulled in opposite directions, whereby the tubular channels are caused to gather and the mouth of the bag is closed. These simple closures, however, present some disadvantages, particularly when the bag is formed of a plastic film. When said film is thin, there is a risk of tearing the channels when pulling the string. Also, in the case of a single loop closure, the plastic film defining the channels has a tendency to spring back to its original flat condition afterthe channels have been gathered and, in order to keep the mouth of the bag closed, the hanging loop has to-be tied into a knot. It is somewhat difficult to tie a loop of string into a knot in such a manner that the knot is placed close against the gathered channels.
It is an object of the invention to provide a draw string bag in which the string is so positioned in the channels that the risk of tearing said channels when pulling the string has been overcome.
It is another object of the invention to provide a draw string bag wherein the ends of the string are no longer secured to each other and the loop is eliminated whereby the free extremities of the string may easily be tied to each other into a knot, if desired, after the channels have been gathered and firmly compressed.
The objects of the invention are attained by a new and improved draw string bag having an open mouth defined by tubular channels extending along opposed transverse top edges of front and back walls of the bag. The essential characteristics of the invention are that one of the channels has an opening placed on a longitudinal edge of the bag while the other channel has an opening placed on the opposite longitudinal edge of I the bag and that a separate string extends through each channel. One end of thev string protrudes through the open end of the channel while the other end of said string is attached to the longitudinal edge of the bag opposite said open end. In this manner, the strings are pulled in opposite directions which results in a more regular and tighter gathering of the channels and a better distribution of the pulling force exerted on said channels, whereby the risk of tearing the channels is eliminated.
The expression string used herein and in the appended claims means a length of any flexible material which might be employed to close the bag. It may be a length of rope, cord, ribbon or tape. The string may be solid, or in tubular form.
The invention will be more fully described with reference to the accompanying drawing illustrating preferred embodiments of the draw string bag, and in which:
FIG. 1 is a front view of one embodiment of the draw string bag of the invention;
FIG. 2 is a cross-sectional view taken at 2-2 of FIG. 1 on an enlarged scale;
FIG. 3 is a front view of another embodiment of the draw string bag of the invention; and
FIG. 4 is a cross-sectional view taken at 4-4 of FIG. 3 on an enlarged scale.
There is shown in FIGS. 1 and 2 an openjdraw. string bag made of a single sheet of heat scalable film material such as a thermoplastic film folded uponitself; to form a front wall 12 and a back wall 14. The front and back walls-are'heat sealed to each other along their superimposed edges to form longitudinal edges 13 and 15 of the bag 10. In this embodiment, since the bag is formed of a single sheet, there is no'transverse heat seal at the bottom of the bag. I
The bag 10 is provided at its open top'end or mouth with a draw string closure. Each top edge portion of the front and back walls 12 and 14, respectively, is inwardly foldedagainst the inner surface of the adjoining wall and heat sealed thereto along lines 16 and 17 to form channels 18 and 20 in the top portion of the front and back walls 12 and 14, respectively. The channels 18 and 20 define the mouth of the bag 10. A string in the form of a tape 22 extends through the channel 18 and another string in the form of a tape 24 extends through the channel 20. The tapes 22 and 24 extend in two different planes parallel to each other. They are made of heat sealable material, such as a thermoplastic film. The channel 18 has an opening 19 at the longitudinal edge 13 of the bag 10 through which one end of the tape 22 extends. The other end of the tape 22 is heat sealed to the opposite longitudinal edge 15 of the bag 10. The channel 20 has an opening 21 at the edge 15 of the bag 10 through whichone end of the tape 24 extends.
The other end of the tape 24 is heat sealed'to the opposite edge 13 of the bag 10. It should be noted that in this first embodiment of the invention, the openings 19 and 21 are formed by cutting out a portion of each upper edge of the bag through both channels, in such a manner that the opening 19 is also an opening for the channel 20 and the opening 21 is also an opening for the channel 18. The bag 10 is closed simply by simultaneously pulling the free end of each .tape in opposite directions which causes the channels to simultaneously shirr and gather. Once the mouth of the bag is closed, the tapes 22 and 24 may easily be tied to each other.
Another embodiment of the draw string bag of the invention is illustrated in FIGS. 3 and 4. The difference between this embodiment and the embodiment shown in FIGS. 1 and 2 is that, instead of being offset, the tapes extend in the same plane, each in its own channel. Referring to FIGS. 3 and 4, a bag 30 has the same construction as the bag 10, withchannels l8 and 20 defining the mouth of the bag 30. A tape 32 extends through the channel 18 and a tape 34 extends through the channel 20 in the same plane as the tape 32. The channel 18 has an opening 29 at the edge 13 of the bag 30 through which one end of the tape 32 extends, the other end of the tape being heat sealed to the opposite edge 15 of the bag. The channel 20 'has an opening 31 at the edge 15 of the bag 30 through which one end of the tape 34 extends while the other end of said tape is heat sealed to the opposite edge 13 of the bag. By contrast with the first embodiment of the invention as shown in FIG. 1, the opening 29 is formed by cutting out an edge portion of the channel 18 only, and the opening 31 by cutting out an edge portion of the channel 20 only, see FIG. 3.
The bag 30 is closed simply by simultaneously pulling the free ends of the tapes 32 and 34 in opposite directions to cause channels 18 and 20 to gather as in the first embodiment and the tapes are tied to each other, if desired.
While the invention has been described in detail with respect to certain preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. If the bag is not made of a heatsealable material, but of a fabric, for example, the string may be made of synthetic or natural fibers and sewn to the edges of the bag. In this case, the string may be in the form of a rope, or a cord, or a ribbon, for example. The bag illustrated in the accompanying drawing is a flat bag, but the invention is not limited thereto. Other types of bags may be employed, with the draw strings disposed in separate channels in the same manner as in the flattype bag illustrated.
lclaim:
l. A draw string bag which comprises:
a front wall and a back wall of flexible material joined to each other along edges of the bag;
tubular channels extending along opposed transverse top edges of said front wall and back wall, respectively, said channels defining an open mouth for the bag, each of 5 4 opening. 2. A bag as claimed in claim 1, in which the strings extend in two different planes parallel to each other and to the transverse edges of the bag.
3. A bag as claimed in claim 1, in which the strings extend in a single plane parallel to the transverse edges of the bag.
4. A bag as claimed in claim 1, in which the walls are made of a thermoplastic film, and the string is in the form of a tape of thermoplastic material attached at one end thereof to the 0 longitudinal edge of the bag by a heat-seal.
US810508A 1969-03-26 1969-03-26 Draw string bag Expired - Lifetime US3547341A (en)

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738568A (en) * 1971-01-06 1973-06-12 Bagcraft Corp Bag with draw band separably integral with bag body
US3738567A (en) * 1970-01-19 1973-06-12 Bagcraft Corp Draw band closure bag
US4624654A (en) * 1984-09-20 1986-11-25 Mobil Oil Corporation Method and apparatus for manufacturing draw tape bags
US4628536A (en) * 1985-04-11 1986-12-09 Mobil Oil Corporation Bag having intermittent orientation draw tape and method of making
US4786189A (en) * 1987-11-02 1988-11-22 Mobil Oil Corporation Draw tape bag with two single wrap around draw tapes and method of manufacture
US4792241A (en) * 1987-09-24 1988-12-20 Mobil Oil Corporation Dual draw tape bag and method of manufacture
US4813794A (en) * 1988-05-19 1989-03-21 Mobil Oil Corporation Thermoplastic draw tape bag with tacky tape
US4832507A (en) * 1988-05-19 1989-05-23 Mobil Oil Corporation Thermoplastic draw tape bag held closed by microencapsulated adhesive
US4850946A (en) * 1987-11-02 1989-07-25 Mobil Oil Corporation Draw tape bag with two single wrap around draw tapes and method of manufacture
US4881931A (en) * 1987-04-10 1989-11-21 Presto Products, Incorporated Hem seal for draw tape bags
US5244394A (en) * 1992-12-29 1993-09-14 Serabian Musto Judy Dental education kit
US5265962A (en) * 1991-04-09 1993-11-30 The Pack Kabushiki Kaisha Packing bag having drawstrings
DE19813860A1 (en) * 1998-03-27 1999-09-30 Leicht Michael Sealing appliance for preventing painting brushes and rollers from drying
US6059458A (en) * 1999-02-05 2000-05-09 Tenneco Packaging, Inc. Elastic top drawtape bag and method of manufacturing the same
US6402377B1 (en) 2000-05-22 2002-06-11 Pactiv Corporation Non-blocking elastomeric articles
DE202008017131U1 (en) * 2008-12-19 2010-04-29 W. Pelz Gmbh & Co. Kg bag
US20110229061A1 (en) * 2010-03-19 2011-09-22 Poly-America, L.P. Multiple Seal Drawstring Trash Bag
WO2015173343A1 (en) * 2014-05-15 2015-11-19 S2F Flexico Bag with bands fixed mechanically to the sheets
FR3021038A1 (en) * 2014-05-15 2015-11-20 S2F Flexico WELDED RIBBON SACHET
FR3021037A1 (en) * 2014-05-15 2015-11-20 S2F Flexico RIBBON BAG
FR3021039A1 (en) * 2014-05-15 2015-11-20 S2F Flexico WELDED RIBBON SACHET
US20180050843A1 (en) * 2015-04-15 2018-02-22 Norgesposen As Bag
US11628980B2 (en) * 2020-02-03 2023-04-18 Jasmine L. Pierce Straps trash bag
EP4414283A1 (en) * 2023-02-13 2024-08-14 Cofresco Frischhalteprodukte GmbH & Co. KG Bag and method for producing at least one bag

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738567A (en) * 1970-01-19 1973-06-12 Bagcraft Corp Draw band closure bag
US3738568A (en) * 1971-01-06 1973-06-12 Bagcraft Corp Bag with draw band separably integral with bag body
US4624654A (en) * 1984-09-20 1986-11-25 Mobil Oil Corporation Method and apparatus for manufacturing draw tape bags
US4628536A (en) * 1985-04-11 1986-12-09 Mobil Oil Corporation Bag having intermittent orientation draw tape and method of making
US4881931A (en) * 1987-04-10 1989-11-21 Presto Products, Incorporated Hem seal for draw tape bags
US4792241A (en) * 1987-09-24 1988-12-20 Mobil Oil Corporation Dual draw tape bag and method of manufacture
US4786189A (en) * 1987-11-02 1988-11-22 Mobil Oil Corporation Draw tape bag with two single wrap around draw tapes and method of manufacture
US4850946A (en) * 1987-11-02 1989-07-25 Mobil Oil Corporation Draw tape bag with two single wrap around draw tapes and method of manufacture
US4813794A (en) * 1988-05-19 1989-03-21 Mobil Oil Corporation Thermoplastic draw tape bag with tacky tape
US4832507A (en) * 1988-05-19 1989-05-23 Mobil Oil Corporation Thermoplastic draw tape bag held closed by microencapsulated adhesive
US5265962A (en) * 1991-04-09 1993-11-30 The Pack Kabushiki Kaisha Packing bag having drawstrings
US5244394A (en) * 1992-12-29 1993-09-14 Serabian Musto Judy Dental education kit
DE19813860A1 (en) * 1998-03-27 1999-09-30 Leicht Michael Sealing appliance for preventing painting brushes and rollers from drying
US6059458A (en) * 1999-02-05 2000-05-09 Tenneco Packaging, Inc. Elastic top drawtape bag and method of manufacturing the same
US6402377B1 (en) 2000-05-22 2002-06-11 Pactiv Corporation Non-blocking elastomeric articles
DE202008017131U1 (en) * 2008-12-19 2010-04-29 W. Pelz Gmbh & Co. Kg bag
US20110229061A1 (en) * 2010-03-19 2011-09-22 Poly-America, L.P. Multiple Seal Drawstring Trash Bag
WO2015173343A1 (en) * 2014-05-15 2015-11-19 S2F Flexico Bag with bands fixed mechanically to the sheets
FR3021040A1 (en) * 2014-05-15 2015-11-20 S2F Flexico MECHANICALLY FIXED RIBBON SACHET WITH SHEETS
FR3021038A1 (en) * 2014-05-15 2015-11-20 S2F Flexico WELDED RIBBON SACHET
FR3021037A1 (en) * 2014-05-15 2015-11-20 S2F Flexico RIBBON BAG
FR3021039A1 (en) * 2014-05-15 2015-11-20 S2F Flexico WELDED RIBBON SACHET
US20180050843A1 (en) * 2015-04-15 2018-02-22 Norgesposen As Bag
US11628980B2 (en) * 2020-02-03 2023-04-18 Jasmine L. Pierce Straps trash bag
EP4414283A1 (en) * 2023-02-13 2024-08-14 Cofresco Frischhalteprodukte GmbH & Co. KG Bag and method for producing at least one bag
DE102023103442A1 (en) 2023-02-13 2024-08-14 Cofresco Frischhalteprodukte Gmbh & Co. Kg Bag and method for producing at least one bag

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