Plastic Injection Molding in Little Rock, AR
Little Rock, AR, is a critical hub for the aerospace, medical, and automotive industries in the Mid-South. With the heavy presence of the Clinton National Airport’s aerospace corridor and the expanding biotechnology sector near the UAMS Medical Center, the demand for high-precision components is at an all-time high. However, local manufacturers in neighborhoods like East End or the Port of Little Rock often face a recurring bottleneck: a lack of local high-volume facilities capable of handling complex resin requirements and ultra-tight tolerances without significant lead-time delays.
The humidity and temperature swings of the Arkansas River Valley add another layer of complexity. High ambient moisture can wreak havoc on hygroscopic resins if not managed by a facility with sophisticated environmental controls. Using an unoptimized mold or the wrong material can lead to catastrophic part failure in the field. Ronningen Research & Development solves these issues by providing elite manufacturing depth. We serve Little Rock, AR from our Michigan facility, delivering the technical sophistication of the Great Lakes manufacturing belt to the heart of Arkansas. Our Michigan-based operations ensure Little Rock innovators have access to top-tier production capacity, regardless of the physical distance.
Precision Process for Little Rock's High-Tech Sectors
In industries where a fraction of a millimeter determines the success of a flight component or a surgical tool, good enough is never an option. We serve the Little Rock area with a comprehensive, data-driven process that prioritizes technical accuracy and precision complex molding for aerospace and defense.
1. Collaborative Design for Manufacturability (DFM)
Our process begins with an in-depth review of your part designs. We don’t just look at the CAD file; we perform advanced flow simulations to identify potential plastic part warping solutions and optimize gate placement for structural integrity before any metal is cut.
2. Custom Precision Tooling
We design and build high-durability steel and aluminum molds in our Michigan facility. These tools are engineered to maintain high-volume repeatability for millions of cycles, ensuring that part number 500,000 is identical to the first article approved in Little Rock.
3. Advanced Material Sourcing
Little Rock’s climate requires a nuanced approach to material selection. From our Michigan facility, we source and test high-performance resins including PEEK, Ultem, and specialized glass-filled polymers. We help you in choosing plastic material for specific climates to ensure your parts survive the Arkansas heat and humidity.
4. Scientific Injection Molding
Utilizing closed-loop process monitoring, we control every variable of the injection cycle. This decoupled molding approach stabilizes the process against ambient variables, maintaining the +/- .001 tolerances required for complex Little Rock industrial assemblies.
5. Secondary Operations & Sub-Assembly
To provide a true turn-key solution, we offer extensive post-molding services. This includes heat staking services for plastic parts, ultrasonic welding, and full assembly and sub-assembly services from our Michigan headquarters.
Why Arkansas Innovators Choose Ronningen Research
Manufacturers in Pulaski County need more than just a vendor; they need a technical partner who understands the risks of ignoring part quality. If sub-par molding is integrated into a defense system or a medical device, the consequences range from expensive recalls to compromised safety.
Tangible Benefits of Our Michigan-Based Service
Aerospace-Grade Precision: We specialize in the tight-tolerance molding required by Little Rock’s aviation contractors.
Reduced Total Cost of Ownership: By reducing cycle time in injection molding, we maximize efficiency and pass those savings to you.
Supply Chain Resilience: By serving Little Rock, AR from our Michigan facility, we provide a stable, high-capacity alternative to regional shops that may be susceptible to local labor fluctuations.
Rapid Scale: Whether you need 5,000 prototypes for a trial in North Little Rock or 5 million production units for a global launch, we have the horsepower to deliver.
Guarantees of Trust and Authoritative Service
With decades of experience serving high-stakes industries, Ronningen Research & Development has built a reputation on reliability. We don’t just promise quality; we guarantee it through established protocols and professional accountability.
Lifetime Tooling Guarantee: When we build and maintain your mold in our Michigan facility, we guarantee the life of the tool for as long as we are running your parts.
Certified Quality Standards: Our operations adhere to strict quality management systems, ensuring that our medical and aerospace clients receive parts that meet all regulatory requirements.
Licensed & Insured: We are a fully licensed and insured manufacturing facility with a long history of serving the defense and healthcare sectors.
Technical Authoritativeness: Our team consists of seasoned mold designers and polymer engineers who provide expert-level insights into part design and material science.
Partner With Michigan’s Premier Molding Team
Don’t let the limitations of local capacity stifle your innovation. Ronningen Research & Development provides the technical depth and high-volume capacity that Little Rock’s aerospace, defense, and medical sectors require. By serving the Little Rock area from our specialized Michigan facility, we offer a level of precision and scalability that is simply not available in traditional local shops.
Ready to take your project to the next level? Our engineering team is standing by to review your designs and provide a roadmap for manufacturing success.
Contact Ronningen Research & Development:
Phone: 269-649-0520
Email: ronningen@ronrnd.com
Michigan Facility: 6700 E Y Z Ave, Vicksburg, MI 49097, United States
Our Active 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.
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.
Little Rock Manufacturing FAQs
How does Ronningen handle shipping to Little Rock from Michigan?
We utilize a streamlined national logistics network. Because our Michigan facility is a national hub, we offer freight rates and delivery timelines that often rival local Arkansas providers, especially for high-volume orders. We serve Little Rock, AR from our Michigan facility with real-time project tracking.
Can you handle over-molding for electronics?
Yes. We have extensive experience in overmolding services for electronics, including soft-touch grips or protective seals onto rigid substrates for handheld devices.
What resins are best for the Arkansas climate?
For the Little Rock environment, we often suggest materials like ASA or specialized UV-stabilized polycarbonates that maintain structural integrity during humid summers without yellowing or becoming brittle.
Do you offer rapid prototyping for new designs?
Absolutely. We can move from your CAD file to a physical “bridge tool” or prototype in days from our Michigan facility, helping you validate your design before you commit to full-scale production tooling.
What information is needed for a Request Quote?
To provide an accurate quote for Little Rock projects, we typically require 3D CAD files (STEP or Parasolid), material specifications, annual estimated volumes, and any required secondary operations.
