Mold-Masters Europa Hot Runner System Optimized for Co-Injection Removes Need for Part Assembly

Author / Editor: Eric Culp / Jürgen Schreier

The new IRIS co-injection hot runner technology for medical device, beverage and food applications enables injection-moulders to produce parts made of two materials in one operation, eliminating the need to assemble such items as lined closure caps from two components or to thermoform containers structured in multiple layers with tie layers or glues. This innovation from Mold-Masters is being exhibited at NPE2012 by both the manufacturer at its own booth and several technology partners who are running live demonstrations involving IRIS in their respective booths.

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IRIS technology features balanced cavity filling with the two materials and a high level of control over the two melt streams. The integrated melt-stream control and the movement of servo-actuated valve pins ensure both precise dosing of the plastics and high-precision control of flow and process pressure.

The live work cell running in Mold-Masters’ NPE booth, engineered to produce high-density-polyethylene closures in a 16-cavity, fast-cycling mould, consists of an IRIS co-injection hot runner, an E-Multi secondary injection unit and E-Drive servo-driven valve gate control, all integrated into a single control unit. The high-performance cap being moulded includes a 3- to 6% EVOH copolymer barrier encased in its centre and emerges from the mould ready to be used to close a container.

Mold-Masters Europa GmbH

Baden-Baden, Germany