Nowadays, the requirements for various technologies are getting higher and higher, and the finished products are naturally getting better and better.The thin wall plastic mold is also one of them. For thin wall plastic mold, we need to study the theory of thin-wall injection molding more thoroughly, especially the properties of the condensate layer, to put forward more reasonable assumptions and boundary conditions. From the above analysis, it can be seen that in the thin-wall injection molding process, many conditions are very different from conventional injection molding. During simulation, many assumptions and boundary conditions of the mathematical model of melt flow need to be adjusted appropriately in thin-wall injection molding. Apply true three-dimensional numerical simulation. The existing commercial numerical simulation software all use two-dimensional, two-dimensional half-element to represent the simplified model of three-dimensional geometric figures, without considering the change of physical quantities in the thickness direction. The three-dimensional flow area, namely the flow at the corner, the thickness change area, and the fountain effect of the melt front can not be represented in the existing numerical simulation software, but they play an important role in thin-wall injection molding. For more details, please visit the plastic pipe fitting injection mould . swymould.com