Apparatus for welding the sealing seam on a package

Details Apparatus for welding the sealing seam on a package Apparatus for welding the sealing seam on a package

1992-11-23

1993-08-17

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

1565831, 533748, 533749, 53546, 53202, 533732, 493207, 493209, B30B 100

Patent

active

052365433

ABSTRACT:
An apparatus is described for welding the sealing seam (23) on a package (24) and which consists at least partially of synthetic plastics coated paper, with a welding tool comprising dies (25, 28) and counter-dies, a support and a drive means (1) for generating the pressure force.
So that two welding tools (25, 25a) can be used and operated simultaneously and so that substantially the same pressure forces are available at both working stations, it is according to the invention envisaged that two welding dies be mounted on respective outer hollow shafts (7, 9) in such a way as to be rotatable about a common axis (2), each outer hollow shaft (7, 9) being rotationally rigidly connected to a common torsion spring (3) as part of the drive means (1) (at 14, 16, 17), the torsion spring (3) being driven from outside (at 11, 12).

REFERENCES:
patent: 2803931 (1957-08-01), David
patent: 2827742 (1958-03-01), Bursak
patent: 2869298 (1959-01-01), Zwoyer
patent: 3505705 (1970-04-01), Stroop
patent: 4241560 (1980-12-01), Deimel
patent: 4269016 (1981-05-01), Koop
patent: 4581873 (1986-04-01), Knuppertz
patent: 5034087 (1991-07-01), Denker
patent: 5094657 (1992-03-01), Dworak

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