Portable seam welding machine for thermoplastic sheets

Details Portable seam welding machine for thermoplastic sheets Portable seam welding machine for thermoplastic sheets

1984-05-29

1985-08-06

Simmons, David

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

1563084, 156499, 156574, B32B 3126

Patent

active

045334234

ABSTRACT:
This invention relates to machines for heating and joining thermoplastic resin sheets and more particularly relates to a portable machine which fuses together the overlapping edges of large stationary sheets as the welding machine travels along the overlapping edges. The machine is moved along the opposed edges of the sheet at a velocity which is changed so that the velocity is substantially proportional to the instantaneous temperature of the heat source. The machine is therefore accelerated or decelerated in accordance with the selected velocity change algorithm which is exponentially in the preferred embodiment.

REFERENCES:
patent: 4175998 (1979-11-01), Hay et al.
patent: 4259142 (1981-03-01), Kortepeter

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