Plastic Parts Assembly Services

Midwest Molding provides multi-component assembly, wire harness assembly, pre-mold, and overmolding services. These capabilities can combine injection molded parts with additional components, substrates, inserts, or wiring to create complete assemblies. Project engineering, tooling support, error proofing, redesign optimization, and quality processes are available to support complex manufacturing programs from program launch through production.

Multi-component assembly combines injection molded parts with additional components to create a complete finished assembly. Midwest Molding supports this work with dedicated project engineers, cradle-to-grave project management, error proofing, and redesign optimization. These services are intended to help maintain part functionality and quality while identifying opportunities to reduce unnecessary complexity or cost.

Pre-mold and overmolding inject plastic material over pre-existing parts, substrates, or inserts. This creates a multi-component assembly in which the molded material integrates with another component. Midwest Molding supports the process with dedicated injection molding equipment and quality control systems intended to promote precision and consistency during production.

Yes. Midwest Molding provides wire harness assembly as part of its broader manufacturing capabilities. The service supports automotive, transportation, electronics, and consumer goods applications, with project engineering and cradle-to-grave project management available. Wire harness assembly can be coordinated with related molding and overmolding requirements when a program needs integrated electrical and plastic components.

Yes. Midwest Molding manages prototype and production tool build, with new tooling guaranteed for the life of the program, along with project engineering support for complex molded components. Services include mold flow analysis, ES testing, and part re-formulation for cost-saving opportunities. The team provides cradle-to-grave project management from tool build through production ramp-up.

The company serves automotive, transportation, electronics, consumer goods, and appliance manufacturing applications. Its programs center on complex molded components and assemblies, including insert-molded and overmolded components, wire harness assemblies, and multi-component assemblies, supported by new tooling guaranteed for the life of the program.

Midwest Molding supports quality through established quality and environmental management certifications, dedicated quality control systems, error proofing, and project engineering. Its capabilities include process optimization and redesign support for complex components and assemblies. Midwest Molding’s track record includes a Delphi Pinnacle Award in 2005.

You can contact Midwest Molding at 224.208.1110 or submit an inquiry through mwmolding.com. Share available design information, assembly requirements, intended application, and production objectives so the team can understand the program. Midwest Molding can then discuss relevant molding, assembly, tooling, engineering, and quality capabilities for the project.