Custom Plastic Injection Molding in Oregon

Explore custom plastic injection molding support for complex components, assemblies, and production programs in Oregon. Midwest Molding, Inc. combines tool build management, straight injection molding, insert molding, two-shot molding, overmolding, and assembly capabilities with experienced project engineering. Its quality-focused approach helps demanding automotive, electronics, appliance, and consumer product manufacturers evaluate integrated production solutions.

Injection molding technician inspecting a complex plastic component beside production equipment

Our Plastic Injection Molding Services

Integrated tooling, molding, assembly, and project engineering support for complex plastic component manufacturing programs.

Prototype & Production Tool Build

Midwest Molding provides cradle-to-grave project management for prototype and production tools, including mold flow analysis, ES testing, part re-formulation, and dedicated engineering support.

Straight Injection Molding

Straight injection molding supports complex components and assemblies for automotive, transportation, electronics, and consumer goods, with project management, process optimization, and quality assurance support.

Two Shot Molding

Two shot molding combines multiple materials or colors in a single cycle to create complex components, supported by engineering assistance from tool build through production ramp-up.

Pre-Mold & Overmolding

Overmolding injects plastic over existing parts, substrates, or inserts to create multi-component assemblies with dedicated equipment and quality control systems supporting consistent production.

Insert & Composite Molding

Insert and composite molding combines materials through injection molding to produce complex components, with engineering support for tooling, project management, and process optimization.

Multi-Component Assembly

Multi-component assembly combines molded parts with additional components into complete assemblies, using error proofing, re-design optimization, and dedicated project engineering support.

Custom Manufacturing Support

Integrated Support For Complex Molded Parts

Midwest Molding, Inc. supports complex plastic component programs from tool build through production with molding, assembly, and process optimization capabilities. Its manufacturing experience spans automotive, electronics, transportation, appliances, and consumer goods. For Oregon-focused manufacturers evaluating domestic supply options, the integrated approach can simplify coordination across tooling, molding, inserts, overmolding, and finished assemblies while keeping quality and cost considerations in view.

Engineer reviewing molded plastic part and tooling at a manufacturing workstation
The Midwest Molding Difference

Why Choose Midwest Molding, Inc.?

A broad manufacturing platform supports complex molding and assembly programs from one experienced provider.

Integrated Capabilities

Access molding, assembly, and welding capabilities through one manufacturing provider for coordinated project support.

Experienced Management

The management team brings an average of more than 35 years of manufacturing industry experience.

Quality Systems

Quality and environmental management certifications support demanding plastic injection molding production programs.

Supplier Recognition

Delphi recognized the company with a Pinnacle Award in 2005.

Meet The Manufacturing Team

Experienced management and project engineers support complex manufacturing programs.

Midwest Molding, Inc. is a specialized plastic injection molding and assembly manufacturer supporting demanding manufacturing and automotive applications. Its experienced management team supports long-term growth across injection molding, assembly, and welding. The company’s capabilities include tooling, straight injection molding, insert and composite molding, two-shot molding, overmolding, and integrated assembly services. For manufacturers evaluating options in Oregon and across the United States, the business provides a broad manufacturing platform for complex plastic components and finished assemblies. Its quality and environmental management certifications, project engineering support, and supplier performance recognition reflect a structured approach to production needs. The company also supports customers seeking prototype-to-production tooling and coordinated manufacturing services.

ExperienceManagement averages more than 35 years
CapabilitiesMolding, assembly, and welding support
RecognitionDelphi supplier excellence award recipient

Frequently Asked Questions

What types of plastic injection molding does Midwest Molding provide?

Midwest Molding provides straight injection molding, insert and composite molding, two shot molding, pre-mold and overmolding, and reel to reel continuous strip molding. The company also supports prototype and production tool build management, multi-component assembly, and wire harness assembly. These capabilities are intended for complex components and assemblies across automotive, transportation, electronics, appliance, and consumer goods applications.

Does Midwest Molding support tool builds and production?

What is two shot molding used for?

Can Midwest Molding overmold existing parts or inserts?

What industries does Midwest Molding serve?

Can Midwest Molding combine molding with assembly services?

How does Midwest Molding support part cost optimization?

How can an Oregon manufacturer discuss a molding project?

Still Have Molding Questions?

Talk with the Midwest Molding team about your component or assembly requirements.

Certified & Recognized

Awards and Recognition

IATF 16949 certification mark

IATF 16949

Quality management certification listed by Midwest Molding.

ISO 14001 certification mark

ISO 14001:2015

Environmental management certification listed by Midwest Molding.

ISO 9001 certification mark

ISO 9001:2008

Quality management certification listed by Midwest Molding.

ISO/TS 16949 certification mark

ISO/TS 16949:2009

Automotive quality certification listed by Midwest Molding.

Minority Business Enterprise certification mark

Minority Business Enterprise certification

Minority Business Enterprise certification listed by Midwest Molding.

Discuss Your Custom Molding Requirements

Share your component, tooling, assembly, or production requirements and connect with the Midwest Molding team.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 224.208.1110.