In fact, in the process of food and chemical packaging, the phenomenon of using welding positioner is more and more, and the advantages are gradually obvious. In addition to the wider weld seam, the whole welding process will not touch any plastic, which mainly depends on non-contact system to ensure, so it will never cause any products to be welded. Pollution, not to mention the need to add any binders and solvents. When the surface of welding material belongs to lower polyolefin plastics, there is no need to add any base material and auxiliary material for pre-heat treatment. Better sealing joint can be obtained by direct welding.

This also means that plastic containers are gradually replacing iron and paper containers. If welded in a humid environment, paper packaging will be more prone to deformation due to dampness. Then its shock resistance performance will be reduced. Plastic plates can be used to weld directly into capped containers, so that it can be effectively used. These disadvantageous phenomena can be overcome directly. If welded in the environment of high corrosion and high salt gas, the most common phenomena of iron and aluminum containers are rust and corrosion. This provides convenience for plastic containers, because laser welding of plastic containers is very simple in the whole welding process, and the cost of using is also comparable. Lower, the most important thing is that the performance of reuse is very good, so iron and paper containers will be completely replaced.