Plastic cap compression molding process
1. Preparation before molding
1. Analyze and inspect the quality of molding materials
2. Preheating of materials
3. Cylinder cleaning
2. Compression molding process
1. Plasticizing
The process of heating and melting plastic in the barrel to form a viscous melt
2. Including material casting
After the metering pump uniformly extrudes the melt, the melt is squeezed into uniform pellets by a knife and put into the mold cavity.
3. Clamping and cooling
The lower mold is driven by the hydraulic system to close the mold in two stages of low pressure and high pressure respectively, and it is cooled and formed after forming.
4. Demolding
5. CVS camera detection system such as: flash, stain, sealing ring and other defects
3. Treatment after bottle cap molding
1. Recooling and sterilization
Conveyor belts are used, cooled by exhaust fans, and sterilized with ultraviolet rays.
2. Stand at room temperature for 24 hours:
Due to uneven plasticization or uneven crystallization orientation and cooling of the plastic in the cavity, the shrinkage of each part of the bottle cap is inconsistent, etc.
because. There is inevitably some internal stress inside the bottle cap. Therefore, after standing for a period of time at room temperature, the internal stress can be eliminated and the
performance of plastic parts.
3. Printing
4. Pack and store
How can food and beverage companies respond to consumer demand for lighter, stronger and more eye-catching closures? The closure is a big problem, although it seems to be only a small part of the overall product packaging,
But when it comes to preservation, it's just as important as the container itself. At a time when shaky economic conditions are prompting consumers to think twice about making any purchases, businesses are striving to meet their needs, from using less raw materials to achieving better seals to improving shelf presentation. Easy Opening, Reliable Support The closure has lost weight and increased heat resistance, but it must also be easy to open. This is especially important for the elderly and children, two specific target groups for functional and health drinks such as fruit juices.
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