What are the key factors in choosing a PET preform injection mold?

What are the key factors in choosing a PET preform injection mold?



What are the key factors in choosing a PET preform injection mold?


1. Plastic raw materials: Different plastic raw materials have different processing variables, and those processing variables will affect the selection of the hot runner system.

2. Product weight: Products of different weights have completely different requirements for the hot runner.

3. Nozzles: Nozzles can generally be distinguished by size, temperature distribution, physical properties, materials used (copper, steel, etc.), as well as the difficulty and price of maintenance.

4. Mold: How many cavities are there? How is the nozzle distribution distance? What kind of materials are processed? These are all mold elements related to the optional hot runner system.

5. Cycle time: Fast production cycle means higher requirements for nozzles.

6. Gate: For the point gate, in order to maintain a good thermal balance in each molding cycle, the tip of the heat flow nozzle must have the function of melting the material and cooling the seal. The valve gate uses a mechanical method to seal the gate.

7. Runner: The use of the hot runner system avoids the generation of material handles, thus saving raw materials and at the same time eliminating the need to remove the material handles by hand, robotic arms or other methods in the past.


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PET preform injection mold