How are plastic caps made?
According to the production process: can be divided into injection cover and plastic cover;
The plastic pressing cover production process is:The mixed material into the pressure machine barrel suction machine, heating to a semi molten state in the plasticizing barrel after quantitative extrusion to the mold cavity, the upper and lower mold mold, plastic pressure and cooling, demoulding, after cutting ring, plus pad, complete the production of pressure plastic cover. Compare:The injection cover needs to be heated to a molten material flow, temperature at 250 degrees Celsius; plastic pressure only needs to be heated to 180 DEG C, the ratio of energy consumption high pressure injection molding cover;The moulding of low temperature, little shrinkage, cap size accurately;The injection of a fill all cavities, each time a bottle extrusion pressure plastic materials. Press extrusion pressure is very small, and injection molding needs high pressure;The injection molding of large volume, single cavity replacement trouble; plastic pressure for each cavity is relatively independent and can be replaced individually;The plastic bottle cover, pressing machine is a special machine, specifically for the design of bottle cap mold; injection molding machine not specifically designed to cap, so the pressure plastic cover can be made of horn, hanging cover rate is high, users love to use.
Suction machine mixed barrel material into the injection molding machine, heating to melting in the barrel, injected into the mold cavity in the cavity, cooling, demoulding, after cutting ring, plus pad, complete injection cover production.
