Multi-shot

Multi-shot 2018-01-30T21:23:17+00:00

The multishot molding process provides the ability to mold-in part and product attributes like: soft-touch grips / ergonomic handles, permanent graphics / colored styling areas, gaskets / O-rings / seals, masking areas for metal plating, building up wall thickness in layers to reduce cycle time, and flexible / moveable part features.

Sussex IM is versed and experienced in the different tooling technologies associated with multishot molding – rotary platen (common core), indexing / stripper plate (core& cavity change), robotic transfer, core toggle, and rotary stack & spindle systems. The choice of system is, for the most part, geometry dependent where part design features and the shape and placement of subsequent resin shots determine the specific mold building technique involved.

The multishot molding process provides the ability to mold-in part and product attributes like: soft-touch grips / ergonomic handles, permanent graphics / colored styling areas, gaskets / O-rings / seals, masking areas for metal plating, building up wall thickness in layers to reduce cycle time, and flexible / moveable part features.

Multishot molding uses two primary ways of joining two different molded components together – a Chemical Bond or a Mechanical Bond. A chemical (molecular) bond occurs when two plastics link together during the molding process. This is accomplished through material selection (a polypropylene and a TPE, for example). Molding parameters such as heat, cooling time, and injection pressure can affect results. In a mechanical bond, two resins “lock” together during the molding process due to specific interlocking design features. Molding parameters can affect results.

While the upfront engineering, design, tooling and molding equipment costs required for multishot molding can be considered a significant investment, these systems can actually save time and money. By reducing or eliminating downstream assembly operations and adding consumer-recognized quality enhancements, multiple material parts have proven themselves in the market for nearly two decades. Toothbrushes, hand tools, kitchen utensils, medical devices, automotive components – are just a few of the many products making use of this manufacturing technique.

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