Processes
INJECTION BLOW MOLDING
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There are three phases to the injection blow molding process.
1. Injection
– Resin is heated to its molten state. The resin is injected through the hot runner into the injection cavity where the perform is made. The perform resembles a test tube. It contains all the plastic to create the bottle. The neck finish and it’s threads have been formed at this point.
2. Blowing: Once the preform has been made, it is moved to the blow molding stage. Here the perform is blown out into the mold using a pneumatic stretch rod and high pressure air create the container.
3. Eject: Once the container has cooled, the mold opens and the container is ejected for down stream quality inspection and further processing.
