Large area welding machine for plastic sheets

Details Large area welding machine for plastic sheets Large area welding machine for plastic sheets

1988-02-12

1989-08-29

Lesmes, George F.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With separate heating means for work

156574, 156579, B32B 3108, B32B 3120

Patent

active

048614122

ABSTRACT:
For the purpose of providing satisfactory, tight welding of overlapping sheet edges and also when passing over uneven surfaces, a press-on roller and two travel rollers are synchronously driven by a drive motor and toothed belt at a traveling, L-shaped machine frame. The travel rollers are laterally offset to the track of the press-on roller, whereby an oblique position of the press-on roller does not occur even in the case of relatively great sheet thicknesses. A heating nozzle running along in front of the press-on roller engages between the sheet edges and forms a pocket, for the lateral closure of which a hold-down is used. The hold-down has a press-on belt rotating in the travel direction and rolling off on the sheet edges, is mounted with vertical play on the frame, and is driven from the press-on roller.

REFERENCES:
patent: 4239581 (1980-12-01), Lang
patent: 4602978 (1986-07-01), Eckstein
patent: 4737213 (1988-04-01), Paeglis
patent: 4744855 (1988-05-01), Ellenberger

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