The Mansfield, Nottingham firm, which makes packaging for personal care, cosmetics, pharmaceutical and food markets,? said it has trebled its production capacity since 1999, with no less than eight new machines being installed since 2010.
"Our teams have now installed all three of the new Ferromatik machines," said general manager Mick Shaw.
He added: "A K-Tec 320, K-Tec 450 and the excellent K-Tec 200/2F ETW machine which features the latest stack turning cube mould technology.
"The stack cube mould technology can turn the cube in less than a second and this particular machine allows us to increase production capacity, as there are twice as many cavities in the mould.
"It also allows us to use moulding machines with half the clamping force to produce the same quantity of parts – the advantages being lower capital costs, parts costs and cycle times.
"This is exactly the sort of process innovation our customers are looking for, and represents both a huge leap forward in injection moulding technology, and a significant new step in Plastek's long-standing and very successful partnership with Ferromatik Milacron, which goes right back to 1999."
As well as being a key supplier to Plastek in the UK, Ferromatik Milacron has also supplied more than 150 moulding machines since 1992 to the Plastek Group's headquarters in Erie, Pennsylvania.
Shaw said: "Developing and maintaining excellent supply chain partnerships is a vital part of our ongoing TPM programme and their package of technological innovation and high quality customer service has meant Ferromatik Milacron has been at the top of our supplier league tables for many years for the entire Plastek Group."