Pressure injection moulding process and compression molding is similar, the main difference between them lies in the compression molding process is the first feeding after closing, and injection molding of the general structure is required to die after feeding.
  1.Measurement of process preparation first material, generally use the balance weighing method, resin system feeding amount should be greater than the sum of the quality of the products quality and runner, gate system and other materials. After weighing the material with high frequency preheating, preheating is to shorten the molding cycle. If the molding material preheating type body, can directly preheating.
  2.feeding and injecting preheated materials should be added to the material chamber as soon as possible, and to heat the material to melt 45S time in 15, and then the transfer column Saishi with 200 to 500MPa pressure cavity pressure to the closed material, material filling process is usually completed within 1min.
  3.resin curing pressure injection molding resin is pressurized in the molten state, shear friction heat plus resin melt flowing through narrow section of gating system generated when the temperature is further increased, the internal temperature distribution is uniform and high compression molding die, so after crosslinking curing speed, uniform and curing, the curing time need shorter than compression molding. The curing time according to specific conditions, usually in 30 to 180S.
  4.product release after a certain time after curing, can mold ejection products, can also and pneumatic demolding manually, solution way. Products after stripping, can be installed insert for a molding. Because of high precision mold, no edge, so don't clean the mold, available copper tools or compressed air to clean up the feeding chamber or pressure injection plug aggregate.