Welding

Welding Plastic & Metal Welding Processes “In plastics welding, films are fused together under action of heat and pressure, resulting in cross linking of their molecular chains.”(T.I.S.-Plastic welding processes) It is very similar to the way that metal is welded together. Instead of gas, metal and electricity the plastic processes use various types of heat and pressure. In a process called Hot Gas Welding, hot air melts the plastic films and they are put together. When they are cool the hot air made the molecules mix-up and fuse together. A very low efficiency level and high losses of energy are major down falls in Hot Gas Welding. Another process used to weld some plastics, is one called Contact Welding. In this process the films are heated, pressurized by pincers, resulting in a low efficiency weld, because only the outside of the films get heated and welded. This process can only make small welds. Impulse welding isthe same as Contact Welding, only that in Impulse Welding you are able to adjust the heat that is imposed into the film. High Frequency Welding is another form of a Plastic Welding Process. In High Frequency welding high frequency waves travel through the plastic. When this is done it welding, process, metal, stick, weld, one, tig, make, made, welded, very, plastic, high, gas, welds, welder, shield, pipe, welders, together, time, through, rod, plant, lot, long, hot, heat, good, films, table, setup, same, project, processes, out