Leading Plastic Injection Molding Services in Boston, MA
Ronningen is proud to offer world-class plastic injection molding and manufacturing services to businesses in Boston, Massachusetts. With over 50 years of experience in the industry, we specialize in producing high-precision molded plastic parts for various industries, including medical devices, aerospace, automotive, and electronics. Our state-of-the-art facility is equipped with the latest injection molding technology, which allows us to efficiently handle projects of all sizes, from small prototype runs to high-volume production.
Beyond plastic injection molding, Ronningen offers additional services like over molding, insert molding, machining, and ultrasonic welding, along with secondary operations such as electroplating, part marking, and packaging. These in-house capabilities help us streamline production, reduce lead times, and ensure top-notch quality for your parts. Ronningen is your reliable manufacturing partner in Boston, dedicated to delivering high-quality, efficient, and cost-effective solutions.
Complete Manufacturing Solutions for Boston’s Growing Industries
Ronningen offers a comprehensive range of plastic manufacturing services tailored to meet the diverse needs of businesses in Boston. We specialize in plastic injection molding, over molding, insert molding, and structural foam molding, providing high-quality parts designed to meet both functional and aesthetic requirements. Whether you’re working on a prototype or scaling up to full production, we ensure precision and reliability throughout the process.
We also offer a variety of secondary services, including electroplating, machining, pad printing, and packaging, all completed in-house to reduce lead times and improve efficiency. By managing every aspect of production in-house, we ensure consistency, accuracy, and cost-effectiveness. Ronningen is committed to providing Boston manufacturers with efficient solutions that save time and meet production goals.
Precision Plastic Manufacturing and Expert Engineering in Boston, MA
Ronningen delivers precision plastic injection molding services with advanced equipment and engineering expertise. Our high-tonnage machines and cutting-edge molding technology enable us to create parts with tight tolerances and exact specifications. Whether you need multi-material parts, complex geometries, or high-strength components, we have the equipment and know-how to meet your needs.
In addition to traditional molding, we offer specialized services like ultrasonic welding, structural foam molding, and spin welding. These technologies help ensure the durability and functionality of your parts. Our in-house machining, milling, and leak testing services further ensure that your parts are manufactured with the highest quality and accuracy.
Why Boston, MA Manufacturers Trust Ronningen for Plastic Injection Molding
Manufacturers in Boston choose Ronningen for our ability to provide a full range of plastic injection molding services, from custom tooling and design to secondary operations like machining, part marking, and electroplating. Our in-house capabilities streamline the production process, reduce lead times, and lower costs, helping you meet your project deadlines and budget constraints.
We offer specialized services such as over molding, insert molding, and structural foam molding, making us the go-to choice for complex parts and multi-material designs. Ronningen’s team of experts ensures that every part meets your exact requirements for performance and quality, with rigorous quality control at every stage of production. Our flexible solutions are ideal for businesses in Boston looking for high-quality, cost-effective manufacturing.
Fast, Efficient Manufacturing Services for Boston, MA
Ronningen’s Boston facility is strategically located to offer fast and reliable plastic injection molding services to local manufacturers. We understand the importance of quick turnaround times, especially for industries with tight schedules. Our team is equipped to handle both small prototype runs and large-scale production with the same level of precision and quality.
With our advanced machinery and in-house capabilities, including machining, leak testing, part marking, and packaging, we ensure that your parts are delivered on time and meet the highest quality standards. Whether you’re working on a prototype or scaling up for mass production, Ronningen provides efficient, cost-effective solutions for all your manufacturing 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 Boston, MA
Ronningen is committed to providing clear and helpful information to businesses in Boston, MA. Below are answers to some of the most frequently asked questions we receive about our plastic injection molding services and manufacturing capabilities. Whether you’re looking to produce prototypes or large production runs, we’re here to assist you with the best solutions.
Q1: What types of services does Ronningen offer for plastic injection molding in Boston?
Ronningen offers a wide variety of services, including plastic injection molding, over molding, insert molding, and structural foam molding. In addition to molding, we provide secondary operations such as machining, electroplating, pad printing, part marking, and custom packaging. These services are all completed in-house, reducing lead times and simplifying your production process.
Q2: Can Ronningen handle both prototypes and high-volume production?
Yes, we can handle both small-batch prototypes and large-scale production runs. Our advanced equipment allows us to quickly scale production while maintaining the highest levels of quality and precision. Whether you need a few hundred parts or millions, Ronningen delivers consistent results and reliable service for every production volume.
Q3: How does Ronningen ensure the quality of molded parts?
Ronningen follows ISO 9001:2015 quality management standards and uses advanced inspection tools such as CMMs, vision cameras, and leak testers to ensure every part meets your exact specifications. Our team monitors the production process closely to catch any potential issues early, ensuring high-quality parts and reduced risk during production.
Q4: What materials does Ronningen use for plastic injection molding?
We work with a wide range of materials, including polypropylene, ABS, polycarbonate, and high-performance thermoplastics. Our team assists in selecting the best material based on your part’s performance requirements, environmental conditions, and budget. We also offer custom coloration services to match your design specifications.
Q5: Does Ronningen offer prototype injection molding services?
Yes, we specialize in prototype injection molding, helping businesses test and refine designs before committing to full-scale production. Our prototyping services allow you to validate designs, materials, and performance early in the process, saving you time and money while ensuring that the final product meets your requirements.