Package making – Methods – Enclosing contents within progressively formed web means
Patent
1993-03-12
1995-02-14
Culver, Horace M.
Package making
Methods
Enclosing contents within progressively formed web means
53 51, 53551, 533892, 2425544, 242556, 2424201, 242421, 156502, B65B 4114, B65B 4118, B65B 920
Patent
active
053883870
ABSTRACT:
An assembly and method provide a continuous supply of packaging film to a form, fill and seal packaging machine with two spindles alternately operating as the active spindle to feed the film from one roll at a time. Opposed pneumatic manifolds are operative to splice the tail-end of the film from the active roll to the head-end of the film from the standby roll. The opposed manifolds pivot in opposite directions away from the machine to provide easy access for loading. A programmable controller controls the splicing operation. Valves operated by the controller connect a vacuum source to one of the manifolds to hold the head-end at a splicing station and to the other to maintain tension on the active film after the tail-end leaves the spindle. An end-of-roll detector near the spindle triggers the tensioning function. The width of the manifold is adjustable to accommodate different width film. A photocell detector and encoder in the circuit allow tracking of the tail-end. When it arrives at the splicing station, the appropriate control valve rapidly switches to apply an air blast generated by positive pneumatic pressure to blow the tail-end/head-end together so that adhesive tape pre-applied to the head-end is securely attached to the tail-end to complete the splicing operation. The programmable controller continues to track the splice through the packaging machine to initiate a dry cycle and removal of the splice section.
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Culver Horace M.
Kliklok Corporation
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