Process Injection blow moulding
Used for high quality bottles like bottles for mineral water containing CO2 under pressure.

First a small part with a large wall thickness (a so-called preform) is produced by injection moulding. The preform is heated and then transferred to the blow moulding machine where it is blown into final shape.

Compared to blow moulding, injection blow moulding gives better definition of details (e.g. screw thread), and a better control of the distribution of the thickness of the material.
Danish Name Sprøjteblæsning
Category Mass conserving processes, Shaping plastics
Materials PET and others
Typical products Bottle for mineral water
Competing processes Blow moulding
References Holmia A/S
Rosti A/S
Photo Thomas Nissen (Computer graphics)
Copyright © 1996-2019 Torben Lenau
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