Precision Injection Molding Services

Common injection molding types include straight injection molding, two-shot molding, insert molding, composite molding, and overmolding. Midwest Molding also provides reel-to-reel continuous strip molding for selected component applications. The appropriate process depends on the part design, materials or inserts involved, assembly requirements, production objectives, and tooling strategy.

An injection mold generally includes mold halves, cavities and cores that form the part, a runner or gating system that directs plastic, cooling passages, and an ejection system. Additional features may include inserts, slides, lifters, and sensors. The exact configuration is developed around part geometry, material requirements, tooling objectives, and production needs.

The best plastic depends on the component’s mechanical, thermal, electrical, chemical, appearance, and regulatory requirements. Material selection should also consider mold design, processing behavior, expected performance, and cost. Midwest Molding’s project engineering team can provide guidance on molding processes and parameters, mold flow analysis, and part re-formulation for a precision molding program.

Precision molding is the controlled production of plastic components where part design, tooling, machine settings, automation, and quality processes work together to achieve consistent results. It is commonly used for complex or demanding components requiring repeatable geometry and reliable assembly performance. Engineering support and process controls are important throughout tooling development and production.

Midwest Molding supports automotive, transportation, electronics, appliance, and consumer goods applications. Its programs center on complex molded components and assemblies, including insert-molded and overmolded components, wire harness assemblies, and new tooling guaranteed for the life of the program.

Yes. Midwest Molding provides cradle-to-grave project management for prototype and production tool build. Support includes mold flow analysis, ES testing, part reformulation for cost-saving opportunities, and dedicated project engineering. This allows tooling considerations and production requirements to be addressed as part of one coordinated molding program.

Yes. Midwest Molding provides pre-mold and overmolding, insert molding, and composite molding. Overmolding places plastic over pre-existing parts, substrates, or inserts, while insert and composite molding combine materials to create complex components. Dedicated equipment, automation, quality systems, and project engineering support these processes.

You can contact Midwest Molding at 224.208.1110 or submit an inquiry through mwmolding.com. Share available part information, drawings, materials, tooling requirements, expected application, and production objectives. The project engineering team can then discuss the appropriate molding process, tooling approach, assembly needs, and available manufacturing support.