Package making – Methods – Forming a cover adjunct or application of a cover adjunct to...
Patent
1994-10-05
1996-10-08
Culver, Horace M.
Package making
Methods
Forming a cover adjunct or application of a cover adjunct to...
53416, 53451, 531334, 531383, 53551, 493213, B65B 920, B65B 6100, B65B 6118
Patent
active
055619665
ABSTRACT:
A novel apparatus and method for manufacturing flexible, reclosable containers is described herein. A continuous web of flexible film is formed into a tube around a forming tube. The lateral edges of the continuous web are guided so as to extend substantially perpendicularly from the forming tube, thereby forming a longitudinal seam. A pair of interlocked continuous fastener profile strips are then directed downwardly into the seam between the lateral edges of the film. Intermittent impulse sealing bars are utilized for heating the exterior surfaces of the seam so as to heatseal the bases of the fastener strips to the interior surfaces of the seam. Vertical longitudinal sealing bars are further provided externally from the impulse sealing bars which seal the longitudinal seam proximate the lateral edges of the continuous web. A pair of transverse sealing bars form the top seal of a first container and the bottom seal of a second container. Product may then be dispensed through the forming tube into the first container, a top seal formed across the first container by the transverse sealing bars, and the first container cut from the tube of flexible film. An improved high speed apparatus and method of manufacturing flexible reclosable containers is thereby provided.
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Culver Horace M.
KCL Corporation
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