More efficient preform-ance

SIG PLASTICS, of Germany, has introduced a PET preform injection moulding machine which claims a 15% higher performance and reduced production costs over its predecessor. With a high capacity plasticising unit of 400g/second, the PREMAX 96 features gentle plasticising achieved by a PET screw developed specifically for the purpose. In addition, reduced screw speed and peripheral velocity means raw material is exposed to less shear forces, and hence reduced temperature.

SIG PLASTICS, of Germany, has introduced a PET preform injection moulding machine which claims a 15% higher performance and reduced production costs over its predecessor. With a high capacity plasticising unit of 400g/second, the PREMAX 96 features gentle plasticising achieved by a PET screw developed specifically for the purpose. In addition, reduced screw speed and peripheral velocity means raw material is exposed to less shear forces, and hence reduced temperature. This, in turn, causes less degradation of the molecular weight and lower acetaldehyde (AA) content. Its new compact mould (pictured) provides 96 cavities on the same space as a standard 72-cavity mould - so with a typical cycling time of 15 seconds, around 23,000 preforms/hour can be produced. SIG's UK branch is based in Milton Keynes.