The injection blow moulding procedure

Injection blow moulding is a manufacturing technology procedure for the cost-effective manufacture of immediately usable plastic hollow containers.

It combines the precision of injection moulding with the shaping capability of blow moulding. By injection moulding a so-called “preform”, the injection moulded container is provided with an opening (screw closure) with injection moulded quality. Other advantages are adherence to uniform wall thicknesses, waste-free manufacture, no seams in the neck and base area (can therefore be subjected to pressure) and outstanding surface quality.

Injection blow moulding systems consist of a plasticizing unit, a temperature control station (if required) and the inflation station. The preform is created by injection moulding onto a core. This remains on the core when it is removed from the mould, and is then inflated to the final shape in the thermoelastic temperature range in a blow moulding tool.

Hollow container moulded parts up to a capacity of about 2 litres are produced. The most frequent applications are bottles and crucibles for pharmaceuticals, cosmetics and also the food industry.

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in comparison to alternative technologies

Intensive cooling

Low tolerances

Minimal parameter deviation.

Low wastage

Reliable mould shape

No breaks or cracks, no problems.

Precision opening area
with high density

Lower tolerances and fewer irregularities in the opening area in comparison to the extrusion blowing procedure.

Possible end products​