Method and apparatus forming fin-type back seal using cohesive s

Details Method and apparatus forming fin-type back seal using cohesive s Method and apparatus forming fin-type back seal using cohesive s

1983-06-01

1985-11-26

Simmons, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

53451, 53551, 156466, B29D 2310

Patent

active

045552894

ABSTRACT:
A method and apparatus for providing a fin-type back seal on packages produced in a vertical form and fill machine utilizes a web having cohesive coating stripes on the edges thereof which are juxtapositioned by forming and then guided to a cold sealing zone. A cold seal assembly with a pressure-biased grooved roller and complementary platen apply rolling pressure to the cohesively striped area without the application of external heat to provide a good seal. The unit is adjustable universally so as provided adaptation to various styles and types of existing machines.

REFERENCES:
patent: 1986422 (1935-01-01), Zwoyer
patent: 2385897 (1945-10-01), Waters
patent: 3935048 (1976-01-01), Rucker

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