what is pvc welding?

what is  pvc welding?
hot air welders generate the heat required for welding by blowing compressed air over the electrical heating elements. the resulting hot air is applied to the welding point, melting the surface of the thermoplastics. as the molecules between the two surfaces mix and cool, pressure is applied and a weld develops.
hot air welding is generally used on thermoplastic materials with a thickness of 1.5 mm (1/16”) or more. hand welding machines are available. because of this, hot air welders can create welds in many different ways, including curves. ıdeal to use when the weld width needs to change frequently or when repeatedly starting and stopping throughout the welding process
 hot wedge welding
hot wedge welding uses a heated metal wedge positioned precisely at the weld point to provide the required heat. the two layers of fabric are pulled through the heated wedge and then subjected to pressure from the rollers. as the molten surfaces mix and cool, a weld is formed. these are also available in handheld models. the advantage of hot wedge welding is that it can be used to weld very thick materials. handheld hot wedge welders are often used in field applications, as materials must be welded outdoors in the field, as there is no blast air to create flying dust and dirt.
 high frequency welding
high frequency welding is also sometimes used to bond pvc coated textiles, especially in the medical industry. pvc is particularly suitable for this type of welding due to its low electrical conductivity and polar molecular structure. heat is generated by rapidly changing electrical current between two metal plates. plates exert constant pressure. high frequency welding has several advantages. the welding process is highly controllable, as the heat is only produced when the current is on. the ability to precisely direct current means that the process does not heat the surrounding material. this reduces the risk of heat degradation in the material. these assets allow the plate pressure to stay longer, creating stronger bonds.

  pvc welding
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