PETpla.net Insider 04 / 2016

BOTTLE MAKING 23 PET planet insider Vol. 17 driven by servo motors, with hydraulics used only for ejec- tion and injection. New and existing PET preform tooling from Milacron and tools from other suppliers can be used on the machine. The M-PET series fea- tured a two-stage injection unit comprised of separate extrusion (for plasticising) and shooting pot with first in last out. Milacron’s PET Star screw design helps keep acetaldehyde generation low while minimising the resi- dence time of the material. Clamping is based on a Ferromatik all-electric, five-point toggle with a rigid three-platen. Linear bearings directly on the machine base support the moving platen. New tooling from Mila- cron for use with M-PET features Milacron’s Cool Box integrated post-mould cooling system that provides enhanced/extended cooling without a cycle-time penalty. On the NPE the M-PET 300 was shown, which delivers 300t of clamp force, pro- duced 10.2g PET preforms made in a 72-cavity tool during a less than 7s cycle. The mould provided 18s of cooling. The overall energy signature of the mould- ing cell is approximately 0.13kW/h per kilogram of material processed. www.milacron.com