Process and device for carrying out a welding process on thermop

Details Process and device for carrying out a welding process on thermop Process and device for carrying out a welding process on thermop

1993-09-10

1999-02-23

Engel, James

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156358, 156555, 1565831, B32B 3100

Patent

active

058739653

ABSTRACT:
In a process and a device for carrying out a welding process on thermoplastic material webs, the value of the pressing force (F.sub.i) of a pair of pressure rollers is determined as a measured value representing the weld seam thickness and is used as the actual value of the controlled variable of a welding process regulating unit, and it is compared with a corresponding set value. The feed speed (V) of the welding device is used as the correcting variable of this regulating unit by increasing the speed in the case of decreasing weld seam thickness and decreasing the speed in the case of increasing weld seam thickness to compensate a possibly existing deviation.

REFERENCES:
patent: 4533423 (1985-08-01), Johnson et al.
patent: 4786353 (1988-11-01), Templeton et al.
patent: 4820365 (1989-04-01), Brumm et al.
patent: 4923558 (1990-05-01), Ellenberger
patent: 5051148 (1991-09-01), Resch
patent: 5072097 (1991-12-01), Miller
patent: 5217561 (1993-06-01), Ueda et al.

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