Sealing jaw for heat sealable film with zippered section

Details Sealing jaw for heat sealable film with zippered section Sealing jaw for heat sealable film with zippered section

1989-06-26

1991-06-04

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With cutting, punching, piercing, severing, or tearing

156251, 156581, 1565831, 531281, B65B 5100

Patent

active

050211170

ABSTRACT:
A mechanism and method for seaming and joining overlaid sheets such as to form seams on adjacent bags by applying heated pressure sealing jaws to opposite sides of the overlaid sheets with the pressure being applied decreasingly inwardly away from the edges of the seam and cutting the seaming areas between them to separate the seamed portions so as to form edges of adjacent bags with the bags preferably having rib and groove upper fasteners extending outwardly to the edge of the seam.

REFERENCES:
patent: 3033257 (1962-05-01), Weber
patent: 4094729 (1978-06-01), Boccia
patent: 4455808 (1984-06-01), Netzhammer
patent: 4582555 (1986-04-01), Bower
patent: 4807426 (1989-02-01), Smith

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