Sever and seal bar having interchangeable inserts and blades

Details Sever and seal bar having interchangeable inserts and blades Sever and seal bar having interchangeable inserts and blades

1992-11-02

1994-01-11

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

1565834, 156515, 53477, 533748, 533737, 533735, B32B 3100

Patent

active

052777456

ABSTRACT:
A heat seal bar used in a plastic film packaging machine for cutting and sealing plastic films about wrapped products is provided with an insert having sealing surfaces and a knife cutting edge which is removably mounted to the seal bar. A first rectangular portion of the insert is adapted to be received within an elongate slot formed in a bottom surface of the seal bar for mounting the insert to the bar with screws. A second portion of semicircular cross section extends along the bottom of the first portion and thereby projects downwardly from the seal bar. A knife blade detachably mounted in the insert has a cutting edge extending below the seal bar. The cutting edge is defined by a pair of converging knife surfaces formed on the knife blade. Convex surfaces of the second portion formed respectively on opposite sides of the knife define the sealing surfaces.

REFERENCES:
patent: 2651350 (1953-09-01), Casey
patent: 3940305 (1976-02-01), Stenberg
patent: 4079570 (1978-03-01), Rucker
patent: 4630429 (1985-02-01), Christine
patent: 4767482 (1988-08-01), Diez
patent: 4807426 (1989-02-01), Smith
patent: 4949846 (1990-08-01), Lakey
patent: 4965985 (1990-10-01), Masubuchi
patent: 5056295 (1991-10-01), Williams
patent: 5131213 (1992-07-01), Shanklin

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