PET Overmolding

“We are very pleased with the new system, which provides competitive cycle times while dramatically reducing the overall part weight and light blocking additives of a monolayer bottle by means of a multi-shot process.  This results in a dramatic reduction in part cost, while delivering improved light barrier properties.  We chose to work with StackTeck and Niigon, as innovative suppliers who bring state-of-the-art capabilities to high volume molding systems,” said Russell Gray, COO of Ngoc Nghia Industry.

“The StackTeck mold includes an advanced  Yudo hot runner, which helps improve our part quality with superior hot runner balance.  At the same time, the hot runner pressure drop is much lower than conventional hot runners, which enables the molding of the thin layers needed for this multi-layer part design.”  Mr. Gray continued, “It’s  an exciting technology to work with, we’ve expanded our testing to include parts with pearlescent colours in the inner layer and clear PET in the outer layer; the final parts have a glossy, “candy-apple” look that gives great shelf appeal and significant savings over a monolayer bottle with 100% blended pearlescent colours. We see opportunities for cosmetics and personal care packaging beyond the original focus on beverage packaging.”