Plastic Injection Molding & Manufacturing Solutions in Rochester, MN
Ronningen proudly offers high-quality plastic injection molding and manufacturing services to businesses in Rochester, Minnesota. With over 50 years of expertise, we specialize in creating precision-molded plastic parts for industries such as automotive, medical devices, aerospace, and consumer electronics. Our state-of-the-art facility uses the latest injection molding technology, allowing us to efficiently handle small prototype runs or large-volume production. Whether you’re looking for precision components or large-scale parts, Ronningen is your trusted manufacturing partner in Rochester, providing cost-effective and efficient solutions to meet your project’s requirements.
In addition to injection molding, Ronningen provides comprehensive secondary services to meet the diverse needs of our clients. We offer over molding, insert molding, ultrasonic welding, electroplating, and custom packaging. These services, provided in-house, help reduce lead times and ensure high-quality, functional parts. We also assist clients with design optimization and material selection to ensure the final product meets both functional and aesthetic specifications. At Ronningen, we focus on delivering the highest-quality parts while reducing the complexity of your manufacturing process, making us your one-stop solution for all your molding needs.
Comprehensive Manufacturing Solutions for Rochester Industries
At Ronningen, we offer a complete range of plastic manufacturing services tailored to the specific needs of businesses in Rochester, MN. Our injection molding capabilities include traditional molding, over molding, and insert molding, providing high-quality parts for a variety of industries. Whether you need prototypes for testing or require large-scale production, we use the latest technology and techniques to ensure your parts are made with precision and quality. Our team is dedicated to working closely with you to deliver solutions that align with your project goals and expectations.
In addition to molding, we provide secondary services such as machining, leak testing, pad printing, and electroplating. These services, all performed in-house, reduce the need for third-party vendors, which simplifies your supply chain and cuts down on lead times. By offering these services under one roof, Ronningen ensures that your parts are ready for use without unnecessary delays. Our integrated approach helps keep costs low while ensuring the quality and consistency of each part, allowing us to meet the needs of Rochester’s growing industries.
Precision Manufacturing and Advanced Technology for Rochester, MN
Ronningen is committed to providing precision plastic injection molding services for businesses in Rochester, MN. Our state-of-the-art facility is equipped with high-tonnage molding machines and advanced technology to create parts with tight tolerances and complex geometries. Whether you need multi-material parts or high-strength components, we have the capacity and expertise to meet your specific production needs. Our advanced equipment ensures that each part is manufactured with the highest levels of precision and accuracy.
In addition to injection molding, we offer ultrasonic welding, spin welding, and structural foam molding, all designed to provide added strength, durability, and lightweight properties to your parts. We also provide in-house services like machining, milling, custom cutting, and leak testing to ensure that each part meets your exact requirements. Ronningen’s integrated manufacturing solutions ensure faster lead times, lower costs, and more efficient production, making us the ideal partner for businesses in Rochester.
Why Rochester, MN Manufacturers Choose Ronningen
Ronningen is the preferred choice for manufacturers in Rochester, MN because we offer a comprehensive range of services that simplify the production process and meet the unique needs of local industries. We specialize in precision plastic injection molding, offering services like over molding, insert molding, and structural foam molding. Our team of experts works closely with you to ensure that your parts are produced to the highest standards of precision, strength, and durability, meeting both functional and aesthetic requirements.
In addition to our molding capabilities, we provide secondary services such as machining, electroplating, part marking, and packaging, all of which are completed in-house. This integrated service model reduces lead times and eliminates the need for third-party suppliers, which helps streamline your production process. By offering all of these services under one roof, Ronningen delivers high-quality parts with faster turnaround times and lower costs, making us a trusted partner for manufacturers in Rochester, MN.
Fast and Efficient Plastic Manufacturing Solutions for Rochester, MN
Ronningen’s facility in Rochester, MN, is designed to provide fast, reliable, and high-quality plastic injection molding services to local businesses. We understand that meeting deadlines is crucial, especially for industries that rely on prototypes or small production runs. Our advanced equipment and skilled team allow us to provide quick turnarounds while maintaining the highest quality standards for every part. Whether you need rapid prototyping or high-volume manufacturing, Ronningen is equipped to handle projects of all sizes.
In addition to injection molding, we offer secondary operations such as machining, leak testing, part marking, and packaging. These services help streamline the production process and ensure that your parts are delivered on time and meet your exact specifications. Ronningen’s commitment to speed, quality, and efficiency ensures that businesses in Rochester receive the best possible manufacturing solutions for their needs.
Our Certifications




Our ISO 9001 certified quality management system is registered and certified by NSF International Strategic Registrations and based on a number of quality management principles including:
- A strong customer focus
- Support of top management
- Adherence to a process approach
- Continual improvement
Under the scope of our registration are the following services:
- Prototype plastic injection tooling for molded parts
- Engineering evaluation samples
- Pilot and production plastic components
Our accreditation from NSF provides assurance to our customers that our certified components and products comply with the technical requirements of ISO 9001.
QMMY2.E116158 Fabricated Parts – Component
Underwriters Laboratories is an independent product safety testing and certification organization working for public safety since 1894. Since its founding, U/L has held the reputation as the undisputed leader in product safety and certification, giving consumers peace of mind about the products they use.
("ITAR," 22 CFR 120-130) REGISTERED
All manufacturers of defense articles, related data, and defense services as defined on the United States Munitions List (Part 121 of ITAR) are required to register with the Directorate of Defense Trade Controls (DDTC). ITAR registration is a means to provide the U.S. Government with necessary information on who is involved in certain manufacturing, brokering, and exporting activities.
(MBP3)
Commitment to our air, land, and water quality is paramount at Ronningen. Since 1999, we've served as a Michigan Business Pollution Protection Partner, adopting pollution prevention policies, committing to reductions, and sharing our successes with other MBP3 members.
Our Comprehensive Manufacturing Services: Plastic Injection Molding & More
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Milling
Our Milling services create intricate parts with high accuracy. We use advanced equipment to ensure precise cuts and finishes for your custom projects.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Frequently Asked Questions About Plastic Injection Molding in Rochester, MN
At Ronningen, we are committed to providing our clients in Rochester, MN, with the information they need to make informed decisions about their manufacturing projects. Below, we’ve answered some of the most frequently asked questions we receive. Whether you are looking to create prototypes or need to scale up production, we are here to help guide you through the process and ensure that your project is a success.
Q1: What plastic injection molding services does Ronningen offer in Rochester?
Ronningen offers a wide range of plastic injection molding services, including traditional injection molding, over molding, insert molding, and structural foam molding. We also provide secondary services such as machining, electroplating, part marking, and custom packaging, all completed in-house. These services help streamline the production process and ensure that your parts meet the highest quality standards.
Q2: Can Ronningen handle both small prototypes and high-volume production?
Yes, Ronningen is equipped to handle both small-batch prototypes and large-scale production runs. Our flexible equipment and experienced team ensure that we can efficiently scale production while maintaining the highest quality for every part. Whether you need a few hundred parts or millions, we deliver consistent, high-quality results on time.
Q3: How does Ronningen ensure the quality of molded parts?
Ronningen follows ISO 9001:2015 quality management standards and uses advanced inspection systems, including CMMs, vision cameras, and leak testers, to ensure that each part meets your exact specifications. We conduct rigorous quality control checks at every stage of production to ensure that your parts meet both functional and aesthetic requirements.
Q4: What types of materials does Ronningen work with for plastic injection molding?
Ronningen works with a variety of materials, including polypropylene, ABS, polycarbonate, and high-performance thermoplastics. Our team helps you choose the best material for your part based on its functionality, durability, and performance needs. We also offer custom coloration to match your design specifications.
Q5: Does Ronningen provide prototype injection molding services?
Yes, Ronningen specializes in prototype injection molding. Our rapid prototyping services allow you to test designs, materials, and dimensions before committing to full-scale production. This helps reduce risks and ensures that your final product meets all specifications. We work closely with you to ensure the prototype meets your expectations before full production begins.