Automatic plastic welders take the operator out of the seam and onto the controls. Where hand welding relies on the welder’s feel for heat and speed, an automatic welder runs at a calibrated temperature, pressure and speed along the seam, producing consistent, repeatable, structurally-sound welds — the kind required for landfill liners, roofing membranes, pond liners, tank baffles and industrial tarpaulin manufacturing.

The Plastic Welding Tools range covers two main automatic-welder types:

Overlap welders (hot-air) — the Laron, Comon, Mion-Pro and similar machines use a stream of hot air directed between two layers of fabric or membrane while a drive wheel pulls the seam through and a pressure roller compresses the molten layers together. Ideal for PVC tarps, PE pond and landfill liners, and PVC awnings.
Wedge welders (hot-shoe) — a heated metal wedge contacts both layers as they pass through, fusing the seam under pressure. The Comon, Mion-Pro and similar wedge welders are common on roofing-membrane and heavy-tarpaulin work where higher temperatures and thicker materials are involved.

Available in 230 V single-phase machines for general fabrication and 400 V three-phase machines for high-output industrial production. Drive speed is variable, temperature is digitally controlled, and pressure is adjustable for the material being welded.

These machines are supported in Australia with local spares (heating wedges, carbon brushes, drive wheels) available. For an introduction to the applications, see welding clear PVC cafe blinds and awnings or industrial fabric welding.