Method and apparatus for detecting a seal on a plastic bag

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control

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Details

156360, 156361, 493202, 493208, B32B 3100

Patent

active

058610782

ABSTRACT:
A method and apparatus for registration of a seal to a perforation on a plastic bag include a drum for forming a seal on a continuous plastic film and a downstream perforator/cutting station for forming a perforation on the film with respect to the location of the seal. The perforation is properly registered to the seal by sensing the seal location directly, with a seal sensor located near the perforator/cutting station.

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