Welding Machine Manufactures
Hot Air Welding
Air heated to over 400° F is directed through a nozzle precisely into the space between the fabrics to be joined. The heated surfaces are then pressed together by a roller which follows the nozzle.
Hot Air Equipment Suppliers:
Thermoplastic vinyl molecules are excited (heated) by radio frequency waves or electronic pulses. The materials are pressed together between a sealing bar and a bed plate.
The Welding Process
The “V” in PVC is for Vinyl. PVC (polyvinyl chloride) is a versatile polymeric plastic that is strong, flexible, and weather resistant, and it has an attractive finish for fabrics used in signs, banners, tents, transportation, and many other applications. PVC is a “thermoplastic” which means that it is highly suitable for welding.
Welding equipment enables fast strong and weather-tight joining of PVC fabrics, including using Weldable Webbing™ in overlapped seams. In these cases, one sheet of vinyl-coated fabric is being welded to another piece of the same type of fabric. (PVC-Coated Weldable Webbing™ can also be stitched, or for light-weight signs and banners, it can be applied using double-sided banner tape or PVC solvent adhesive.)