The production process of plastic bottle cap generally divided into two types:
Compression molding and injection molding production process lid cover production processes
Pressure plastic bottle cap production process: After the suction machine, the mixed material is sucked into the compression molding machine barrel in the barrel heated to a semi-molten plasticized state quantitatively extruded into the mold cavity, the upper and lower mold clamping, compression molding and cooling stereotypes, stripping, and then cut through the loop, padded cover complete compression molding production.
Injection molding production process cover
Suction machine, the mixed material is sucked into the injection molding machine barrel in the barrel heated to a molten plasticized state, injected into the mold cavity, the cavity cooling stereotypes, stripping, and then cut through the loop, padded complete injection molding cover production. The main difference between the two
1, large volume injection mold, single cavity replacement trouble; compression molding each cavity is relatively independent, can be replaced individually. 2, compression molding cover is not pour point, which has a more beautiful appearance and better printing effect;
3, injection once filled all cavities, each out of a cap compression molding material. Compression molding extrusion pressure is very small, and the injection pressure required is relatively high;
4, injection molding cover material needs to be heated to a molten state flow, temperature of about 220 degrees; compression molding cover only needs to be heated to around 170 degrees, cover the injection energy than high pressure plastic cover;
5, compression molding lower processing temperatures, a small amount of shrinkage, the size of the system covers more precise;
At present, the development of plastic bottle caps is also relatively fast, cost-effective to export around the world for plastic water bottles, plastic juice bottles, plastic honey bottles, plastic food packaging bottles. PBM Plastc Co., Ltd specializes in custom plastic bottle, production and export for many years, if you are looking for plastic bottle cap manufacturers and custom-made, please feel free to contact us.