With the increasing demand for food safety, plastic bottle cap is an essential factor to carry food safety, and improving the quality of plastic bottle cap is an important way to build a harmonious society.This paper analyzes the main characteristics and key technical points of the plastic bottle cap mould in China, and analyzes the design and processing of the mould with a typical plastic bottle cap.
The production process of plastic bottle cap generally divided into two types:Compression molding and injection molding production process lid cover production processesPressure 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 coverSuction 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; Master Packing Co.,Ltd focus on Cap Mold , if you want to konw more infomration, please visit https://www.petblowingmachine.com/product/injection-mold/cap-mold/