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Top-Rated Plastic Injection Molding Services in Green Bay, WI

Ronningen Research & Development proudly offers Green Bay, WI businesses the highest quality in plastic injection molding services. With a legacy of over 50 years in the industry, we have established ourselves as a leader in crafting reliable and precision-molded components for a range of applications—spanning from aerospace and electronics to medical devices and consumer goods. Whether you’re in need of prototype injection molding or full-scale production, we bring your vision to life with exacting detail.
Our commitment to innovation, efficiency, and customer satisfaction has made us a trusted partner for Green Bay manufacturers. With advanced molding machinery and expert engineers, we ensure your parts are manufactured with superior performance, every time.

Delivering Quality & Efficiency in Every Molded Part

At Ronningen, we combine ISO 9001:2015-certified processes with Six Sigma methodologies to deliver exceptional quality in every part. Our Green Bay clients depend on us for mold manufacturing that emphasizes speed, reliability, and zero-defect production. From small runs to high-volume operations, we meet exacting standards while optimizing production time and material efficiency. Our streamlined workflow and high-tech equipment enable faster cycle times and superior consistency. Whether your goal is rapid market entry or long-term production, Ronningen ensures each part meets performance demands while staying on budget and schedule.
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Full-Service Injection Molding for Green Bay Manufacturers

Ronningen Research & Development provides Green Bay companies with comprehensive plastic injection molding services, tailored for any stage of production. We support your process from concept to completion—offering services like custom mold design, prototype development, tooling, and high-volume production. Beyond traditional molding, we provide specialized solutions such as over molding, hot stamping, insert molding, and ultrasonic welding. These advanced techniques allow us to produce complex, multi-material parts with structural integrity and visual appeal. From one-off designs to mass production, we scale our services to meet your needs.
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Why Green Bay Businesses Trust Ronningen R&D

For over half a century, Ronningen has been the go-to plastic injection molding company for businesses in Green Bay and across Wisconsin. Our unmatched experience, quality certifications, and customer-first approach make us the partner of choice for critical manufacturing needs. From advanced machining to precision molding and component assembly, we offer services that simplify your supply chain and ensure product reliability. Our capabilities—such as leak testing, pad printing, and structural foam molding—allow us to support even the most complex part designs with confidence.
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Serving Green Bay, WI and the Entire Brown County Area

Located in the heart of Wisconsin’s manufacturing belt, Ronningen proudly serves Green Bay and neighboring areas with advanced plastic injection molding services. We understand the local industry’s need for high-performing components, fast turnarounds, and responsive support.
Whether you’re in De Pere, Ashwaubenon, or Howard, our team works directly with you to ensure precision-engineered parts arrive on time and ready for production. We’re more than just a molding partner—we’re part of your manufacturing success.
Certifications

Our Active Certifications

ISO 9001:2015
Quality Management System
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U/L CERTIFIED
Product Safety Testing
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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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Frequently Asked Questions About Plastic Injection Molding in Green Bay, WI

If you’re considering injection molding for your project in Green Bay, WI, here are some essential answers to commonly asked questions about our process, timelines, and capabilities.
What types of products can you manufacture through injection molding in Green Bay?
Ronningen produces a wide range of components, from micro-electronics housings to robust automotive parts. We serve industries like healthcare, telecommunications, aerospace, and consumer goods—offering durable, high-performance injection molded parts tailored to your application.
Yes. We provide rapid prototyping services for development phases and can quickly scale to full production. Whether you need five pieces or five million, Ronningen ensures consistent quality and performance at every stage of your project.
We stock over 250 plastic materials, including ABS, nylon, polycarbonate, polypropylene, and engineering-grade resins. Our team will help you select the ideal plastic based on strength, flexibility, temperature tolerance, and part design.
Ronningen uses advanced quality assurance techniques such as non-contact vision inspection, CMM checks, and functional testing. All processes adhere to ISO 9001:2015 standards, ensuring precision from start to finish.
Absolutely. Our tooling engineers design and manufacture molds in-house, optimized for your part geometry and production volume. We also offer mold repairs and modifications to accommodate design changes or upgrades.
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What Our Clients Say About Ronningen Research & Development

At Ronningen Research & Development, we believe in delivering precision, innovation, and outstanding results. Don’t just take our word for it—see how our advanced plastic injection molding and custom manufacturing solutions have helped businesses across industries streamline production, improve quality, and drive success.