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High-Precision Plastic Injection Molding in Madison, WI for Demanding Industries

Ronningen Research & Development proudly delivers advanced plastic injection molding services to manufacturers, startups, and OEMs in Madison, WI. With over 50 years of experience and a track record of excellence, we help our clients bring custom molded plastic parts to life with unmatched precision and efficiency. Whether you’re developing components for the medical, telecommunications, aerospace, or consumer electronics industry, Ronningen Research & Development is your trusted injection molding manufacturer in Wisconsin.
Our team of expert engineers and certified technicians work collaboratively to ensure your parts are produced with accuracy, quality, and speed. We support every stage of your project—from prototype injection molding and custom tooling to full-scale production. Every part manufactured by Ronningen is made in the USA and built to meet the highest standards in performance and consistency. If you’re located in Madison and need reliable, custom plastic parts, our team is ready to deliver world-class solutions tailored to your goals.

ISO-Certified Quality & Fast Turnaround for Madison-Based Projects

At Ronningen Research & Development, quality and efficiency are at the core of everything we do. Serving Madison, WI, we adhere to ISO 9001:2015 standards to ensure that every molded plastic component meets strict quality benchmarks. Our Six Sigma manufacturing processes are designed to eliminate waste, reduce cycle times, and ensure repeatable quality—perfect for businesses seeking consistent production results at scale.We utilize advanced molding machinery ranging from 7.7 to 1100 tons, capable of producing everything from micro-components to large structural parts. This enables us to support Madison’s diverse manufacturing ecosystem with flexible solutions tailored for low-volume runs, high-volume orders, and everything in between. With fast lead times, tight tolerances, and dependable delivery, Ronningen Research & Development is the name Madison manufacturers trust when precision and reliability can’t be compromised.
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Comprehensive Plastic Injection Molding Services for Madison Manufacturers

Ronningen Research & Development provides Madison, WI companies with full-spectrum plastic injection molding services, combining engineering insight with modern manufacturing technology. We offer complete part development, including 3D modeling, material selection, mold fabrication, and part validation—all under one roof. This integrated approach reduces costs and shortens your time to market.In addition to standard injection molding, we specialize in advanced services like over molding, insert molding, structural foam molding, and ultrasonic welding. We also provide value-added processes including hot stamping, leak testing, custom coloration, part marking, and CNC machining. Whether you’re launching a new product line or scaling up production, our Madison-based clients rely on Ronningen for fast, flexible, and flawless execution.
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Why Ronningen Research & Development Is Madison’s #1 Injection Molding Partner

For more than five decades, Ronningen Research & Development has helped leading companies in Madison and beyond gain a competitive edge through innovative injection molding solutions. Our commitment to excellence is backed by state-of-the-art equipment, UL certification, and deep knowledge of injection molding tooling and manufacturing processes. We don’t just mold plastic—we engineer production solutions that power success.Ronningen’s Madison clients enjoy direct access to experienced project managers, on-site engineers, and a responsive support team who understand the urgency of modern manufacturing timelines. With the capacity to handle prototype iterations, engineering changes, and full-scale production without delay, we’ve earned our reputation as one of Wisconsin’s most reliable injection molding manufacturers.
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Serving Madison, WI and Surrounding Manufacturing Communities

Ronningen Research & Development is proud to serve the entire Madison area, including Fitchburg, Middleton, Sun Prairie, Verona, and other nearby manufacturing hubs. Our Michigan-based facility is fully equipped to support regional demand with fast shipping, collaborative engineering support, and unmatched quality assurance.
We’ve successfully delivered millions of molded plastic parts to clients across the Midwest, helping companies in Madison optimize performance and reduce time to market. If you’re in Dane County and looking for plastic injection molding companies with a long-standing reputation for integrity and quality, Ronningen is ready to deliver.
Certifications

Our Certifications

ISO 9001:2015
Quality Management System
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U/L CERTIFIED
Product Safety Testing
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ITAR REGISTERED
22 CFR 120-130
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MBP3 MEMBER
Pollution Prevention Partner
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Our Comprehensive Manufacturing Services: Plastic Injection Molding & More

At Ronningen Research and Development, we specialize in providing high-quality, precision-driven manufacturing solutions tailored to your needs. With over 50 years of experience, our expertise in Plastic Injection Molding and other manufacturing services ensures we meet the most demanding industry standards. Our wide range of services is designed to reduce your time-to-market, improve product quality, and streamline production processes. Below, explore the services we offer and see how we can help your business grow:

Assembly & Sub-Assembly

At Ronningen Research and Development, we provide expert Assembly & Sub-Assembly services for seamless integration of components. Whether it's simple assemblies or complex multi-part solutions, we ensure precision and efficiency in every process.

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Custom Coloration

Our Custom Coloration services offer tailored color options to meet your design and branding needs. We use advanced Plastic Injection Molding techniques to ensure long-lasting, consistent colors for your products.

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Custom Cutting Parts

Ronningen Research and Development specializes in Custom Cutting Parts using state-of-the-art machinery. We provide accurate cuts for a variety of materials, meeting the specific needs of your project.

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Drilling

We offer high-precision Drilling services to create exact holes in various materials. Our advanced equipment ensures accuracy and quality for projects requiring tight tolerances and consistent results.

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Electroplating

Our Electroplating services enhance part durability and corrosion resistance with high-quality metallic coatings. We provide superior finishes for applications in automotive, electronics, and more.

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Heat Staking

Heat Staking at Ronningen Research and Development creates strong, reliable bonds between plastic components without the need for additional materials. This process is ideal for parts requiring secure assembly and durability.

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Hot Stamping

Hot Stamping services provide a high-quality finish with precision and efficiency. We use advanced techniques to apply logos, designs, and text to parts, ensuring a clean and lasting imprint.

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Insert Molding

Insert Molding allows us to mold plastic around metal or other materials to create strong, integrated components. This service provides enhanced functionality and durability for complex applications.

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Labeling

We provide precise Labeling services that ensure clear, durable markings for traceability, branding, and compliance. Our labeling process guarantees that your parts are correctly identified and meet industry standards.

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Leak Testing

Our Leak Testing services verify the integrity of your products, ensuring they meet safety standards. We provide airtight and watertight testing to prevent failures and guarantee quality.

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Machining

We offer high-precision Machining services for custom parts. Using advanced CNC equipment, we deliver consistent, high-performance components for a variety of industries.

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Milling

Our Milling services create intricate parts with high accuracy. We use advanced equipment to ensure precise cuts and finishes for your custom projects.

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Over Molding

Over Molding at Ronningen Research and Development creates multi-material components for enhanced durability and functionality. We mold plastic over existing parts to meet complex design requirements.

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Packaging, Custom

Our Custom Packaging services protect your products during transportation and storage. We offer tailored solutions to ensure your parts arrive safely and in excellent condition.

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Pad Printing

We provide Pad Printing services for high-quality markings on various materials. Ideal for branding, labeling, and customization, our process ensures precise, durable prints.

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Over Molding

Over Molding at Ronningen Research and Development creates multi-material components for enhanced durability and functionality. We mold plastic over existing parts to meet complex design requirements.

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Packaging, Custom

Our Custom Packaging services protect your products during transportation and storage. We offer tailored solutions to ensure your parts arrive safely and in excellent condition.

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Pad Printing

We provide Pad Printing services for high-quality markings on various materials. Ideal for branding, labeling, and customization, our process ensures precise, durable prints.

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Part Marking

Our Part Marking services at Ronningen Research and Development ensure clear and accurate markings for identification and traceability. We use advanced techniques to apply markings that meet industry standards.

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Painting

At Ronningen Research and Development, our Painting services enhance the aesthetic and protective qualities of your parts. We apply durable coatings for both functional and cosmetic purposes.

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Silk-screening

We offer Silk-screening services at Ronningen Research and Development for durable, high-quality prints on parts. This process is ideal for logos, designs, and labels, providing precise results for a variety of materials.

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Shielding

Our Shielding services at Ronningen Research and Development protect components from electromagnetic interference. We use advanced materials and techniques to ensure reliable performance and compliance with industry standards.

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Shipping

At Ronningen Research and Development, we handle Shipping with care, ensuring that your products are securely packaged and delivered on time. Our reliable shipping services help you get your products to the market quickly and safely.

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Spin Welding

Spin Welding services at Ronningen Research and Development provide strong, durable bonds for plastic parts. This technique is ideal for creating seamless joints without the need for additional materials.

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Structural Foam Molding

We offer Structural Foam Molding at Ronningen Research and Development for lightweight, durable plastic parts. This service provides strong components with a reduced weight, ideal for applications that require high strength without the added bulk.

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Taping

Our Taping services at Ronningen Research and Development are designed to provide secure adhesion and protection for your products. We offer custom taping solutions to meet the needs of various industries.

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Trimming

At Ronningen Research and Development, we provide Trimming services to finish and refine your parts. Our precise trimming process ensures clean edges and perfect finishes for your molded components.

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Ultrasonic Welding

Ultrasonic Welding at Ronningen Research and Development uses high-frequency sound waves to create strong, precise bonds between plastic parts. Ideal for delicate applications, this process ensures high-quality, durable results without the need for adhesives.

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FAQs – Plastic Injection Molding Services in Madison, WI

If you’re looking to launch a plastic manufacturing project in Madison, WI, here are some answers to the most frequently asked questions about our injection molding services.
Which industries does Ronningen serve in Madison, WI?
Ronningen provides injection molding for Madison’s leading sectors including healthcare, telecommunications, automotive, aerospace, and industrial equipment. Each molded part is designed with specific performance requirements and industry compliance in mind, ensuring long-term functionality and safety in its application.
Yes, Ronningen offers fast-turnaround prototype injection molding to help Madison businesses validate part designs before investing in full-scale production. Our team can help refine the prototype, adjust tolerances, and optimize mold design for mass manufacturing.
We offer over 250 thermoplastic resins including ABS, polycarbonate, nylon, polypropylene, and engineered blends. Ronningen’s experts will guide Madison clients through material selection to ensure the best performance, durability, and cost efficiency for their specific project.
We use advanced process controls, non-contact inspection tools, and certified QA systems to monitor each production batch. Every molded part produced for Madison clients goes through dimensional checks, defect detection, and validation testing to ensure compliance with specifications.
Lead times depend on part complexity, mold readiness, and order volume. Prototypes can be delivered in just a few days, and production runs are scheduled for timely delivery. Ronningen is committed to helping Madison businesses reduce time-to-market with efficient, high-quality injection molding.
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