Production technology of plastic bottle cap
Generally speaking, the production process of plastic bottle cap can be divided into two types: the production process of plastic cap and the production process of plastic cap: the suction machine sucks the mixed material into the barrel of the press, heats the barrel to the semi melting and plasticizing state, extrudes the mixed material into the mould cavity quantitatively, closes the mould up and down, presses the mould, cools and shapes it, demoulds it, and then cuts the ring and adds the pad to complete it Production of compression plastic cover. Anhui baishijia Packaging Co., Ltd. small editor today to tell you about the production process of plastic caps ha!
Production process of injection molding cover: the suction machine sucks the mixed materials into the barrel of the injection molding machine, heats the barrel to the melting and plasticizing state, injects them into the mold cavity, cools and molds them in the cavity, demoulds them, and then cuts and cushions them to complete the production of injection molding cover.
Main differences between the two
1. The volume of injection mold is large, the replacement of single mold cavity is troublesome; each mold cavity is relatively independent and can be replaced separately.
2. There is no pouring point for the cover, so it has a more beautiful appearance and better printing effect
3. The injection molding fills all cavities at one time, and the pressing molding extrudes one bottle cap material at a time. The extrusion pressure is very small, but the injection pressure is high
4. The injection cover needs to heat the material to the molten flow state, and the temperature is about 220 ℃; the compression cover only needs to heat to about 170 ℃, and the energy consumption of the injection cover is higher than that of the compression cover
5. The pressure plastic processing temperature is low, the shrinkage is small, and the cover size is more accurate
To sum up, it is a simple introduction to the production process of plastic bottle caps! Hope the introduction of Xiaobian can help you!