Custom Injection Molded Automotive Interior Trim Manufacturing

Midwest Molding, Inc. delivers custom injection molded automotive interior trim manufacturing for complex plastic components and integrated assemblies. From tooling design and mold flow analysis through production, our engineering-led team supports demanding automotive programs with two-shot, insert, composite, overmolding, and straight injection capabilities. Our Bartlett, Illinois manufacturing facility provides a broad platform for quality-focused, cost-conscious production across the United States.

Injection molded automotive interior trim components in a modern manufacturing facility

Our Automotive Interior Trim Services

Integrated tooling, molding, assembly, and engineering support for complex automotive interior trim programs.

Tooling Design & Build

Midwest Molding manages prototype and production tool design and build from project initiation through production. Mold flow analysis, engineering support, and part re-formulation help support manufacturability and cost-saving opportunities.

Straight Injection Molding

Straight injection molding supports complex automotive components and assemblies through dedicated equipment, mold flow analysis, production engineering, quality assurance, and cradle-to-grave project management.

Two Shot Molding

Two shot molding combines multiple materials or colors in a single molding cycle, supporting complex interior trim components while simplifying production through integrated tooling and project engineering.

Pre-Mold & Overmolding

Pre-mold and overmolding injects plastic over existing parts, substrates, or inserts to create multi-component assemblies. Dedicated equipment and quality control systems support precision and consistency.

Insert & Composite Molding

Insert and composite molding combines materials through injection molding to produce complex automotive components. Engineering support covers tooling, project management, and process optimization.

Multi-Component Assembly

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

Integrated Manufacturing Support

Build Better Interior Trim Components

Midwest Molding provides a connected path from tooling through production for custom automotive interior trim. Its engineering team supports complex molded components with mold flow analysis, part re-formulation, dedicated manufacturing cells, error proofing, and process optimization. Two-shot, insert, composite, overmolding, and straight injection capabilities help manufacturers develop integrated assemblies while maintaining attention to quality, delivery, service, and competitive cost performance.

Engineer reviewing custom molded automotive trim parts
The Midwest Molding Difference

Why Choose Midwest Molding, Inc.?

A specialized manufacturing partner for complex molded components and integrated assemblies.

Integrated Capabilities

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

Engineering Support

Experienced project and manufacturing engineers support complex designs, tooling, process optimization, and production ramp-up.

Quality Systems

Quality and environmental management certifications support disciplined production for demanding automotive applications.

Industry Experience

Management brings more than 35 years of manufacturing industry experience across molding and assembly programs.

Meet The Midwest Molding Team

Experienced manufacturing professionals support complex molding and assembly programs.

Midwest Molding, Inc. is a specialized plastic injection molding and assembly manufacturer headquartered in Bartlett, Illinois. The company’s experienced management team supports long-term growth across the manufacturing industries it serves, with capabilities spanning injection molding, assembly, and welding. Its team supports automotive and other demanding applications through tooling design, project engineering, process optimization, and production services. Midwest Molding operates from a modern manufacturing facility and provides cradle-to-grave project management for complex molded components. The company’s capabilities are designed to help customers move from prototype and production tooling through manufacturing, assembly, and delivery with one coordinated provider.

ExperienceManagement team averages more than 35 years
Facility120,000 sq. ft. manufacturing facility
Equipment55 fully electric injection molding machines

Frequently Asked Questions

What automotive interior trim components can Midwest Molding manufacture?

Midwest Molding supports custom molded automotive interior trim components and complex assemblies. Its capabilities include straight injection molding, two-shot molding, insert and composite molding, pre-mold and overmolding, tooling design and build, and multi-component assembly. The appropriate process depends on the component design, materials, inserts, functional requirements, and production objectives.

What is two shot molding used for?

Can Midwest Molding design and build production tooling?

What is insert and composite molding?

Does Midwest Molding offer overmolding?

How does Midwest Molding support automotive production programs?

Can Midwest Molding support prototype-to-production projects?

Where is Midwest Molding located?

Have Questions About Your Trim Program?

Talk with Midwest Molding about tooling, molding, assembly, and engineering support.

Certified Manufacturing Systems

Awards and Recognition

IATF 16949 certification mark

IATF 16949

Automotive quality management certification listed by Midwest Molding.

ISO 14001:2015 certification mark

ISO 14001:2015

Environmental management certification listed by Midwest Molding.

ISO 14001:2004 certification mark

ISO 14001:2004

Environmental management certification listed by Midwest Molding.

ISO 9001:2008 certification mark

ISO 9001:2008

Quality management certification listed by Midwest Molding.

ISO/TS 16949:2009 certification mark

ISO/TS 16949:2009

Automotive quality certification listed by Midwest Molding.

Start Your Automotive Molding Discussion

Share your component, tooling, or assembly requirements and connect with Midwest Molding’s manufacturing team.

Contact Us Today

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