Machine for welding roof membranes

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control

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Details

156378, 156497, 156499, 156544, 156574, 156579, B32B 3500, B44C 706

Patent

active

048348287

ABSTRACT:
A device for welding portions of two overlapping roof membranes wherein a fastening means has been fastened to the lower of the two membranes and wherein there are portions of both overlapping membranes on both sides of the fastening means. The device includes a welding means which can apply welds to the membranes on both sides of the fastening means simultaneously. The welding means includes a nozzle having two outlets, with each outlet applying a heat sealing weld on one side of the fastening means. The device also includes a pair of weighted stitcher wheel assemblies which help to eliminate air pockets for underneath the roof membranes and to maintain the proper alignment of the overlapping membranes. The invention also includes a welding process using the above-mentioned device.

REFERENCES:
patent: 3829338 (1974-08-01), Hayasi et al.
patent: 4146419 (1979-03-01), Neidhart
patent: 4259142 (1981-03-01), Kortepeter
patent: 4354893 (1982-10-01), Kugler et al.
patent: 4440588 (1984-04-01), Stevenson et al.
patent: 4504352 (1985-03-01), Meyer
patent: 4725328 (1988-02-01), Arnold
patent: 4737213 (1988-04-01), Paeglis et al.

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