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US 6,640,519 B1Granted
Method and apparatus for producing bags having a recloseable fastener
AssigneeMolins Limited
InventorJames Goodwin
Life of this patent
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AssigneeMolins Limited
InventorJames Goodwin
Estimating the term…
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.
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.
Apparatus for securing a fastening strip to a web of packaging material, said apparatus comprising:
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:
Dependencies are inferred from the claim text.