The gating system is one of the most important issues in the design of injection molded preforms.Ordinary runner casting systemThe common sprue system, also known as the sprue system or the gating system, is the necessary passage for molten plastic from the injection nozzle to the cavity.Mainstream roadThe main channel is part of the channel that connects the machine nozzle to the inlet of the branch channel, which is the first place where plastic enters the cavity of the pet preform mold.

It is easy to generate bubbles and loose tissue, and it is easy to generate overcurrent and insufficient cooling;If the flow path is too small, heat loss increases, fluidity decreases, and injection pressure increases, resulting in difficulty in molding. Whether the design is reasonable, affecting the overall structure of the Pet Preform Mouldand its ease of operation.Its size and size are closely related to plastic flow rate and fill time. However, there are some exceptions.The function of the gating system is to fill the plastic melt smoothly into the depth of the cavity to obtain a plastic product with a clear outline and excellent internal quality.

Due to the low requirements, some small pet preform molds can be used to open the main channel directly on the parent template without the use of a sprue bushing. The runner system includes a main runner, a runner, a gate, and the like. It has a decisive influence on the quality of plastic parts. It can extrusion blow mold Factory be understood as the flow path of molten plastic from the nozzle of the injection molding machine to the bypass. The gating system is a complete conveying path that directs the plastic melt from the injection molding machine nozzle to the mold cavity.

Typically, the main runner is made into a separate runner sleeve that is placed on the parent template. It has the functions of mass transfer, pressure holding and heat transfer. Therefore, in the filling process, rapid order is required, pressure loss is small, heat loss is small, exhaust conditions are good, and the pouring system is easy to separate or cut from the product. Too much will result in too much cold material being recovered, increased cooling time, and increased enclosed air.Welcome to choose Jilian mold, we are a very reliable Pet Preform Manufacturers, no matter what your needs can come to contact us, we will provide you with the perfect solution, if you are excited, please leave a message

コメント