Package making – With cover-adjunct application or formation – Adjunct comprising provision to secure cover
Patent
1988-02-26
1990-03-13
Sipos, John
Package making
With cover-adjunct application or formation
Adjunct comprising provision to secure cover
53370, 83382, 83578, B65B 5108
Patent
active
049073923
ABSTRACT:
A machine for applying a twist-type tie to the neck of a bag has a path and sets of endless belts which come together at a nip along the path to propel a bag neck which passes into the nip forwardly to a typing zone in the path. Here a twist-type ribbon crosses the path and is secured at its end in a holder. An endless chain carries a pusher tab up to the tying zone behind the bag neck, causing the bag neck to gather behind and deflect the ribbon, then pauses, and thereafter resumes its forward motion to drive the bag neck out of the machine. During the pause a bag clamp secures the bag neck against a surface that is along the path and a needle lifts a portion of the ribbon upwardly behind the gathered bag neck and brings that portion of the ribbon to the holder so that the ribbon loops below the bag neck in the form of leading and trailing segments. While the needle is so extended, a twister hook gathers its leading and trailing segments and twists them together. As the tie is completed, the holder shears the trailing segment of ribbon and at the same time grips that segment so the ribbon remains extended across the path. A ribbon stripper moves forwardly from behind the twister hook and clears the severed twist tie from the tying zone as the pusher tab resumes its forward motion.
REFERENCES:
patent: 3138904 (1964-06-01), Burford
patent: 3919829 (1975-11-01), Burford
patent: 4005563 (1977-02-01), Nitsch
patent: 4063477 (1977-12-01), Hantke
patent: 4356054 (1982-10-01), Gotz
patent: 4730434 (1988-03-01), Knudsen
Lummus A. D.
Miravalle Peter S.
Sipos John
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