How is the vertical injection molding machine feeding

1, fixed feeding, refers to the vertical injection molding machine in each work cycle, the nozzle is always in contact with the mold, that is, the vertical injection molding machine base fixed fixed preplastic materials.

This feeding method of vertical injection molding machine is characterized by shortening cycle time and improving production efficiency. It is suitable for processing general purpose plastics with wide temperature, such as polystyrene (PS).

2, before feeding, refers to the screw pre-plastic materials are injection seat before the whole return.

Mainly used in the use of straight nozzle or need to have a high back pressure plasticizing place, in order to reduce the nozzle “salivation” phenomenon, often used in polyphthalein (PA) polycarbonate vinegar (PC) and other materials.

3, after feeding, refers to the screw pre-plastic material is the injection seat after the whole return.

This way to make the nozzle and cold mold contact time is the shortest, suitable for processing crystallized materials, such as polyethylene, PE polypropylene, PP and so on.

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