Zipper guide and spreader device for form, fill and seal machines
AssigneeZip-Pak Incorporated
InventorMichael J. McMahon
Life of this patent
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Abstract
A zipper guide and spreader device for form, fill and seal apparatus comprises a package material guiding and spreading mechanism wherein a pair of articulated members have zipper guideways. The members are hingedly connected together and one of the members is hingedly connected to a fixed support. An actuator operates the articulated members from a biased relaxed position into an articulated material-spreading position wherein the material is spread for eliminating wrinkles before edge sealing across the material below the discharge end of the forming and filling tube.
Claims18
In form, fill and seal apparatus wherein package making material slidably wrapped about a forming and filling tube has a longitudinal zipper closure and is advanced by package width increments along and then below the package filling discharge end of the tube:
- a package material guiding and spreading device comprising a pair of articulated members having zipper guideways;
- and
- means for actuating said members between an aligned guideway relation wherein the zipper can run freely thru the aligned guideways during advancement of the material, and an articulated material spreading position wherein the material is spread for eliminating wrinkles before edge sealing across the material below the discharge end of the forming and filling tube.
A zipper guiding and spreading device for form, fill and seal apparatus wherein package making material slidably wrapped about a forming and filing tube has a longitudinal zipper closure and is advanced by package width increments along and then below the package filling and discharge end of the tube, comprising:
- a package material guiding and spreading mechanism comprising a pair of articulated members having zipper guideways;
- and
- means for actuating said members between an aligned guideway relation wherein the zipper can run freely thru the aligned guideways during advancements of the material from the tube and an articulated material spreading position wherein the material is spread for eliminating wrinkles before sealing across the material below the discharge end of the forming and filling tube.
Dependencies are inferred from the claim text.