Method and apparatus for sealing reclosable flexible containers

Details Method and apparatus for sealing reclosable flexible containers Method and apparatus for sealing reclosable flexible containers

1990-03-09

1991-05-28

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493206, 493207, 493193, 493194, 493214, B31B 166

Patent

active

050190270

ABSTRACT:
An apparatus and method for manufacturing reclosable thermoplastic containers which eliminates the need for spot-sealing zipper closures or zipper closure elements to a web of thermoplastic film prior to forming side seals and zipper end seals is provided. Opposing seal jaws provide increased heat and pressure to zipper closures in a manner which results in improved hermetic and fluid-tight side seals and zipper end seals.

REFERENCES:
patent: 3575096 (1971-04-01), Hook
patent: 3847711 (1974-11-01), Howard
patent: 3915077 (1975-10-01), LaFleur et al.
patent: 4582555 (1986-04-01), Bower

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