Device for the formation of tubular overwrappings in heat-sealab

Details Device for the formation of tubular overwrappings in heat-sealab Device for the formation of tubular overwrappings in heat-sealab

1995-06-06

1997-03-25

Coan, James F.

Package making

Wrapping machines

Cover-wiping passage or pocket for initial wrap

53228, 533759, B65B 1130, B65B 1922, B65B 4900

Patent

active

056133448

ABSTRACT:
A method of fashioning tubular overwrappings with a heat-sealable material, and a device in which single commodities are directed in succession together with respective sheets of heat-sealable material into a set of pockets spaced apart at a constant pitch around the periphery of an indexing wheel rotated through steps of length equal to a submultiple of the pitch of the peripheral pockets. The pockets currently occupied pause after each step in alignment with a relative set of heat-seal stations and are accompanied through the first step, approaching the first heat-seal station, by a moving folder positioned so as to flatten a first longitudinal flap of the relative sheet against the flank of the commodity; a second flap is flattened similarly over the first flap by a fixed folder whereupon the two flaps are held fast in overlap contact, ready for heat-sealing.

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