Plastic Injection Molding & Manufacturing in Lansing, MI
Ronningen proudly serves Lansing, Michigan, providing top-quality plastic injection molding and manufacturing solutions to businesses across various industries. With over 50 years of expertise, we specialize in producing precision-molded plastic parts for sectors like automotive, aerospace, medical devices, and consumer electronics. Our state-of-the-art facility is equipped with advanced injection molding machines that can handle everything from small prototype runs to high-volume production.
In addition to injection molding, Ronningen offers a comprehensive range of secondary services including over molding, insert molding, ultrasonic welding, electroplating, and pad printing. By providing all of these services in-house, we streamline the production process, reduce lead times, and ensure that each part meets your exact specifications. Ronningen is committed to delivering efficient, cost-effective solutions for Lansing businesses.
Full-Service Manufacturing Solutions for Lansing’s Growing Industries
Ronningen provides a full suite of plastic manufacturing services tailored to meet the diverse needs of Lansing’s industries. Our plastic injection molding services include traditional molding, over molding, insert molding, and structural foam molding. We ensure that every part we produce meets both functional and aesthetic requirements, with high precision and durability.
Beyond molding, we offer secondary services such as machining, leak testing, electroplating, and custom packaging, all completed in-house. This in-house approach reduces the need for third-party vendors, streamlines your production process, and improves efficiency. Ronningen is dedicated to delivering high-quality, reliable solutions to businesses in Lansing, ensuring that your parts are produced on time and meet your exact specifications.
Precision Manufacturing and Expert Engineering for Lansing, MI
At Ronningen, we offer precision plastic injection molding services for businesses in Lansing, MI, utilizing high-tonnage machines and the latest molding technology. Our machines are capable of producing both intricate, small parts and large-volume components with exceptional accuracy and strength. We also offer specialized services like ultrasonic welding, spin welding, and structural foam molding to meet complex production needs.
Our in-house capabilities extend to machining, custom cutting, leak testing, and part marking, ensuring that each part meets its functional and aesthetic requirements. By offering these services under one roof, we streamline your production process and improve efficiency, delivering high-quality results that meet deadlines and exceed expectations.
Why Lansing, MI Manufacturers Choose Ronningen
Ronningen is the trusted choice for Lansing, MI manufacturers because we offer a full range of services beyond just plastic injection molding. Our capabilities include over molding, insert molding, structural foam molding, and advanced secondary services such as machining, electroplating, and leak testing. We work closely with you from the initial concept to the final production run, ensuring that every part is produced to your exact specifications.
In addition to our molding and machining services, we provide packaging and custom cutting, making us a one-stop solution for all your manufacturing needs. Our in-house capabilities help reduce lead times, simplify the production process, and ensure that each part is delivered on time with the highest quality. Ronningen is committed to providing Lansing manufacturers with efficient, cost-effective, and high-quality solutions.
Fast, Efficient Plastic Injection Molding Solutions for Lansing, MI
Ronningen’s facility in Lansing is equipped to provide fast, efficient, and high-quality plastic injection molding services. Whether you need prototypes, small production runs, or high-volume manufacturing, we have the equipment and expertise to meet your needs. Our advanced systems and experienced team ensure that parts are produced with precision, and we offer fast turnaround times without sacrificing quality.
In addition to injection molding, we offer secondary operations such as machining, leak testing, and custom packaging, which are all handled in-house. By offering these services under one roof, we reduce the complexity of your supply chain, improve efficiency, and ensure that parts are ready for use when they leave our facility.
Expert Plastic Injection Molding & Manufacturing in Lansing, MI




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 Lansing, MI
At Ronningen, we frequently receive questions from businesses in Lansing, MI, about our plastic injection molding services. To help you understand how we can support your production needs, we’ve answered some of the most common questions we receive. Whether you’re starting a new project or looking to scale up production, we’re here to provide the information and expertise you need.
Q1: What plastic injection molding services does Ronningen offer in Lansing?
Ronningen offers a full range of plastic injection molding services, including over molding, insert molding, structural foam molding, and precision injection molding. Additionally, we provide secondary services such as machining, electroplating, pad printing, and custom packaging. These services are completed in-house, allowing us to streamline production, reduce lead times, and deliver high-quality parts.
Q2: Can Ronningen handle both small prototypes and high-volume production?
Yes, Ronningen can handle both small-batch prototypes and large-scale production runs. Our flexible production system allows us to efficiently scale up production while maintaining the same level of quality and precision. Whether you need a few hundred parts or millions, we can deliver consistent, high-quality results for your project.
Q3: How does Ronningen ensure quality control during production?
We follow ISO 9001:2015 standards for quality management and utilize advanced inspection systems such as CMMs, vision cameras, and leak testers to ensure that every part meets your exact specifications. Our quality control team monitors every stage of production to ensure precision and consistency.
Q4: What materials does Ronningen use for plastic injection molding?
Ronningen works with a wide 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 functional requirements, performance needs, and environmental conditions. We also offer custom coloration services to match your specific design and aesthetic requirements.
Q5: Does Ronningen offer prototype injection molding services?
Yes, Ronningen specializes in prototype injection molding. Our prototyping services allow you to test designs, materials, and functionality before full-scale production. This process helps you identify and address potential issues early, saving time and reducing the risk of errors during the production phase.