machinery
PET Preform Injection Moulding
High-cavity injection moulding of PET preforms, the upstream process to PET stretch blow moulding.
PET Preform Injection Moulding is the process of producing the small, test-tube-shaped PET parts (preforms) that are later heated and blown into bottles. This is a separate operation from blow moulding, different machine, different cavity counts, different supply economics.
Cavity options: 16, 24, 32, 48, 72, 96. Output ranges from 8,000 preforms/hour (16-cav) to 60,000+ preforms/hour (96-cav).
Most Indian water plants do not run preform injection moulding in-house, they buy preforms from established suppliers (Reliance, Indorama, IVL). It typically becomes economical when the bottling line consumes more than 50,000 bottles per day, or when special preform geometries are required.
Capex: ₹45 Lakhs to ₹3 Cr depending on cavity count.
Related terms
PET Preform
A small, injection-moulded PET part that is heated and blown into a finished bottle in stretch blow moulding.
PET Blow Moulding
A bottle-forming process that uses heated PET preforms expanded by high-pressure air inside a bottle-shaped mould.
IV (Intrinsic Viscosity) Value
A measure of PET resin molecular weight, directly affects bottle wall thickness, drop-impact resistance, and pressure tolerance.
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