Filling stage Filling is the first step in the entire injection molding process. The time starts when the mold is closed and begins to be injected, until the mold cavity is filled to about 95%.
Pressure-holding phase The role of the pressure-holding phase is to continuously apply pressure to compact the melt and increase the density (densification) of the plastic to compensate for the shrinkage behavior of the plastic.
The design of the cooling system in the cooling stage is very important. This is because the molded plastic products can only be cooled and solidified to a certain rigidity to prevent the plastic products from being deformed due to external forces after demolding.
Demoulding is the last step in an injection molding cycle. Improper demoulding methods may result in uneven stress during demoulding and deformation of the product during ejection.