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US6640519: Method and apparatus for producing bags having a recloseable fastener

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Filing Information

Inventor(s) James Goodwin ·
Assignee(s) Molins PLC ·
Attorney/Agent(s) Antonelli, Terry, Stout & Kraus, LLP ·
Primary Examiner John Sipos ·
Assistant Examiner Louis Huynh ·
Application Number US9661374
Filing date 09/13/2000
Issue date 11/04/2003
Predicted expiration date 11/17/2020
Patent term adjustment 65
U.S. Classifications 531/334  · 493/214  · 493/213  · 531/392  · 156/66  · 531/333  ·
International Classifications --
Kind CodeB1
International Classifications 493927 · 493210 · 493212 · 493213 · 493214 · 53412 · 531333 · 531334 · 531392 · 156 66 ·
Foreign Priority GB9922747 - 09/24/1999 ·
16 Claims, 4 Drawings


Abstract

An apparatus (50) for securing a fastening strip (58) to a web (18) of packaging material comprises an anvil (100) which defines a support surface for the web. The support surface has an elongate recess (104) for receiving the fastening strip. There is a moveable sealing device (116) disposed opposite and below the support surface and a retractable support element (130) disposed between the support surface and sealing device. A feeding arrangement feeds the fastening strip along the recess and between the support element and the support surface arrangement. Suction is applied via a vacuum chamber (102) to hold the fastening strip in the recess and permit the support element to be retracted to a position which permits the sealing device to move the web into engagement with the support surface and the fastening strip with the fastening strip received in the recess to permit sealing of the fastening strip to the web.

Independent Claims | See all claims (16)

  1. 1. Apparatus for securing a fastening strip to a web of packaging material, said apparatus comprising a member disposed above a feed path of the web, said member having an elongate recess for receiving said fastening strip, a sealer movable against said member, a retractable strip support disposed opposite said member, a feed arrangement for feeding said fastening strip in a lengthways direction of said recess and between said strip support and said member, a holding mechanism for holding said fastening strip in said recess, and a mechanism for retracting said strip support from a position between the feed path of the web and said recess to a position which permits said sealer to move said web into engagement with said member and said fastening strip with said fastening strip received in said recess, said holding mechanism being actuated to hold said fastening strip when said strip support is retracted.
  2. 7. Apparatus for securing a fastening strip to a web of packaging material, said apparatus comprising: a feed arrangement for feeding said fastening strip over said web such that said fastening strip is disposed transverse to a lengthways direction of said web; a sealer for sealing said fastening strip to the web; a retractable support for said fastening strip having a support position disposed between said fastening strip and said web for supporting said fastening strip relative to said web; a releaseable gripper arranged to grip said fastening strip over said web; and a retractor operatively connected with said retractable support, the arrangement being such that said releaseable gripper is operable to grip said fastening strip over said web and said retractor is synchronously operable to retract said retractable support from said support position to permit said sealer to seal said fastening strip to said web.
  3. 11. In combination, a vertical form, fill and seal packaging machine and apparatus for securing a fastening strip to a planar web of packaging material in said packaging machine, said machine comprising: a web feeder for feeding said web; a former for causing said planar web to adopt a generally tubular configuration; a first sealer for forming a continuous seal in a lengthways direction of said tubular configuration web for sealing respective lengthways extending edges of said web in adjacent relationship; a second sealer for forming transverse seals at spaced intervals along said tubular configuration web; and said apparatus being disposed upstream of said former and comprising: a feeding arrangement for feeding said fastening strip over said web such that said fastening strip is disposed transverse to a lengthways direction of said web; a sealer for sealing said fastening strip to the web; a retractable support for said fastening strip having a support position disposed between said fastening strip and said web for supporting said fastening strip relative to said web; a releasable gripper arranged to grip said fastening strip over said web; and a retractor operatively connected with said retractable support, the arrangement being such that said gripper is operable to grip said fastening strip over said web and said retractor is synchronously retract said retractable support to permit said sealer from said support position to seal said fastening strip to said web.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US4655862 Incorporated Minigrip Christoff et al. Apr 1987
US4878987 Minigrip, Inc. Ven Erden Nov 1989
US4909017* Minigrip, Inc. McMahon et al. Mar 1990
US5782733* Innoflex Incorporated Yeager Jul 1998
US5930983* Pacmac, Inc. Terminella et al. Aug 1999
US6032437* Flexico-France Bois Mar 2000
US6044621* Illinois Tool Works Inc. Malin et al. Apr 2000
US6088998* Illinois Tool Works Inc. Malin et al. Jul 2000
US6099451* Robert Bosch Corporation Mulder et al. Aug 2000
US6131374* Flexico-France Bois Oct 2000
US6212857* Illinois Tool Works Inc. Van Erden Apr 2001

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
DE29808817BOSCH GMBH ROBERTOct 1999
EP0933193ROBERT BOSCH CORPORATIONAug 1999
* cited by examiner

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
GB9922747 MOLINS PLC Nov 1999
GB0022078 MOLINS PLC Oct 2000
EP1086899 MOLINS PLC James Goodwin Mar 2001
GB2355687 MOLINS PLC GOODWIN JAMES May 2001
US6640519 Molins PLC James Goodwin Nov 2003