The production process of various brands of mineral water bottle caps is different. For consumers, we do not particularly understand the process of mineral water bottle caps. Next, let the editor of Hengzheng Packaging Technology Co., Ltd. explain it to you. What is the specific classification of production technology?
Bottle caps are generally divided into: single-piece caps and double-piece caps; single-piece caps: there is no gasket inside the cap, the entire cap is made of the same material, and is sealed by folding or an inner plug; two-piece caps: a gasket inside the cap The gasket material is relatively soft and relies on the resilience of the compressed gasket to maintain the seal;
The production process of injection molding caps is as follows: the suction machine sucks the mixed material into the barrel of the injection molding machine, heats it in the barrel to melt and plasticize it, injects it into the mold cavity, cools and shapes, demolds, and then cuts the ring and adds pads to complete the process. The production process of injection molding cover. The production process of compression molding machine cover is: the suction machine sucks the mixed material into the barrel of the compression molding machine, heats it in the barrel to a semi-melted plasticizing state, and quantitatively enters and exits the mold cavity, upper and lower molds Close. Compression molding, cooling, shaping, demoulding, then ring cutting and padding to complete the production of compression molded bottle caps.
Comparison between injection molding and compression molding: ⑴ Injection molding lids need to heat the material to a molten flow state, with a temperature of about 250 degrees Celsius; compression molding only needs to be heated to about 180 degrees Celsius, and the energy consumption of injection molding lids is higher than that of injection molding lids; ⑵ Compression molding processing temperature is low , shrinkage is small, and the bottle cap size is more accurate; (3) Injection molding fills all the mold cavities at one time, and compression molding extrudes one bottle cap material at a time. Compression molding extrusion pressure is very small, but injection molding requires relatively high pressure; ⑷The injection mold is large and it is troublesome to replace a single cavity; each compression molding cavity is relatively independent and can be replaced individually; ⑸The compression molding capping machine is a special bottle cap machine with a special demoulding design for the bottle cap; the bottle cap injection molding machine The bottle cap basically has no special design.
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