Method and apparatus for forming fin-type back seals

Details Method and apparatus for forming fin-type back seals Method and apparatus for forming fin-type back seals

1989-03-07

1990-04-24

Cashion, Jr., Merrell C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

53451, 53545, 53551, 156215, 156218, 156289, 1563084, 156323, 156466, 1565839, B32B 3114

Patent

active

049197401

ABSTRACT:
An improved apparatus and method for providing uniform fin-type back seals with flexible packaging material for use in conjunction with form-fill-and-seal machines is disclosed which utilizes a moveable tucker plate disposed between the mated edges of the flexible packaging material and the body of the packaging material. When sealing, the tucker plate moves against the body of the packaging material and prevents lateral movement of such material during the sealing operation. The tucker plate is joined to a sealing platen in a manner which maintains a fixed distance between the tucker plate and the sealing platen until a threshold sealing pressure is exceeded.

REFERENCES:
patent: 2154183 (1939-04-01), Raney
patent: 2385897 (1945-10-01), Waters
patent: 2538149 (1951-01-01), Fannen et al.
patent: 3480470 (1969-11-01), Kiefer
patent: 3807118 (1974-04-01), Pike
patent: 3830681 (1974-08-01), Wilson
patent: 3935048 (1976-01-01), Rucker
patent: 3992854 (1976-11-01), Howell
patent: 4103473 (1978-08-01), Bast et al.

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