Views: 12 Author: John Publish Time: 2018-04-24 Origin: Site
Hot air welding machine (hot air seam sealing machine) and high frequency welding machine is both for PVC tarpaulin (all kinds of tensile structure membrane) welding (seam sealing)
But high frequency welding and hot air welding are two completely welding method:
What is high frequency welding?
The main principle of high frequency welding is based on dielectric heating of the material to be welded. The sheets of material are put between two metal plates (the electrodes), whereupon a high frequency voltage is connected to the plates. As a result, the molecules in the material start vibrating, which results in heating up to the melting (fusing) temperature. By bringing two layers of material into the HF field at the same time and pressing them together, the layers melt together (fuse) and form a strong welded joint.
What is hot air welding?