ISO 9001:2015 CERTIFIED | ISO 13485 COMPLIANT

Custom Plastic Injection Molding Services

Turnkey thermoplastic engineering and precision molding from prototype to high-volume production runs. Eliminate supply chain delays with our 100% US-based manufacturing facility.

As a leading plastic injection molding company, JDI Plastics specializes in providing top-tier plastic injection molding services for industries requiring exact specifications. Whether you are looking for a reliable custom plastic parts manufacturer for medical devices or an experienced injection molding plastic partner for commercial goods, our team delivers consistent, high-quality results.

Custom Tooling for New Projects
DFM & Engineering Support
Overmolding & Insert Molding
Secondary Value-Added Assembly
Tooling Transfers & Maintenance

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Trusted Partner for Leading OEMs & Component Manufacturers Across North America

1995

Established Year

97.8%

On-Time Delivery Rate

<50

External PPM

100%

US Manufacturing (Palatine, IL)

Core Capabilities & Value Additions

One-Stop Engineering & Custom Molding Solutions

Driven by precision plastic injection molding at our core, JDI Plastics backs every project with end-to-end engineering, tooling management, and value-added assembly.

PRECISION THERMOPLASTIC PROCESSING

Precision & Custom Plastic Injection Molding Solutions

Finding the right manufacturing partner among the many plastic injection molding companies can be a challenge. At JDI Plastics, our advanced machinery is equipped to handle everything from standard product runs to highly complex plastic injection molding components. We are proud to be one of the premier precision injection molding companies dedicated to producing high-quality injection molded plastic components.

Precision & Tight Tolerances

Repeatable dimensional accuracy down to +/- 0.001 inch for critical OEM components.
Overmolding & Insert Molding

Metal-to-plastic conversions, threaded inserts, and soft-touch TPE grips.
Thermoplastic Resins

Expertise in ABS, Polypropylene, Glass-Filled Nylon, PC, PEEK, TPE, and many more.
Scalable Production Runs

From initial 500-unit production runs to 100,000+ unit mass manufacturing.

Integrated Value-Added Services

Enhancing your injection molding projects with turnkey secondary services, tooling, and quality solutions.

Turnkey Secondary Assembly

Consolidate your operations. We perform sub-assembly, sonic welding, heat staking, pad printing, surface coating, and custom retail-ready packaging.

Ultrasonic & Heat Staking
Custom Pad Printing & Kitting

Tooling Transfers & Reshoring

Seamlessly relocate existing tooling to JDI. We inspect, perform preventative maintenance, tune up molds, and resume production with limited downtime.

In-House Mold Preventative Maintenance
Rapid Tooling Onboarding

Early Supplier Involvement

Early Supplier Involvement (ESI) includes low-cost prototyping, comprehensive support for product development, and lifetime support for tooling maintenance.

3D Print Prototyping
In-House Tooling Maintenance & Repair

ISO 9001:2015
Quality

Certified since 2001, our quality system enforces rigorous Cpk/Ppk statistical process control, lot traceability, and first article inspections.

ISO Certified Quality Control
First Article Inspection Reports (FAIR)

Material Expertise

Resin Selection & Specialty Polymers

Compare our extensive thermoplastic resin processing capabilities across performance ratings, key properties, and common OEM applications. This list is not all-inclusive - we work with an extensive variety of resins.

Resin/Material	Category	Key Properties	Common Applications	Thermal & Chemical Resistance
ABS / ABS-PC Blend	ENGINEERING	High impact strength, dimensional stability, easy to finish/plate	Electronics housings, automotive trim, appliance enclosures	Moderate Temp (up to 200°F) / Good Oils Resistance
Polypropylene (PP)	COMMODITY	Lightweight, high fatigue strength, excellent living hinge capability	Containers, caps & closures, automotive battery cases	Moderate Temp / Superior Chemical Resistance
Nylon (PA 6 / PA 66)	ENGINEERING	High tensile strength, wear resistance, available glass-filled	Structural brackets, gears, under-the-hood components	High Temp (up to 300°F+) / Fuel & Solvent Resistant
Polycarbonate (PC)	ENGINEERING	Optical clarity, extreme impact resistance, rigid stability	Lenses, transparent covers, medical device housings	High Heat Deflection / Fair Chemical Resistance
PEEK / ULTEM	SPECIALTY HIGH TEMP	Outstanding mechanical properties, extreme heat and flame resistance	Aerospace parts, medical implants, oil & gas valve components	Extreme Temp (up to 480°F+) / Broad Chemical Inertness
TPE / TPU Elastomers	SPECIALTY SOFT TOUCH	Rubber-like flexibility, overmolding bond strength, tactile grip	Soft-touch tool handles, seals, gaskets, vibration dampeners	Flexible Operating Range / High Weathering & UV

Industries We Serve

Delivering precision injection molded parts tailored to strict regulatory and functional requirements across diverse sectors.

Medical Devices

Automotive

Electronics

Tools & Hardware

Sporting Goods

Industrial, Mining & Agriculture

5.0 Star Rating from Satisfied OEMs

Based on verified Google Reviews from leading industrial partners.

Charles Hirsch

Verified OEM Partner

"The team at JDI Plastics delivers exceptional quality and service! Their precision in plastic injection molding was a game changer for our custom molding needs. Reliable company with excellent customer service."

Matt Mayer

Verified Client

"We looked at 3 different plastic injection molding companies before choosing JDI Plastics. Nine months later, we couldn't be happier. Quality of work and communication cannot be overstated."

Austin Andre

Verified Engineer

"JDI was essential to our project's success. Exceptional from start to finish. Easily one of the best custom molding companies in the Chicago metro area."

Daniel Foster

Verified Client

"DI Plastics delivers consistent quality, reliable service, and clear communication. Their team made our manufacturing process smooth and efficient."

Have questions?

Frequently Asked Questions

Everything you need to know about starting a plastic injection molding project with JDI Plastics.

How quickly can I receive a quote for my injection molding project?

We take a minimum of 24 hours to prepare. However, this timeline can be increased based on the complexity of the part and/or the quantity of parts within the overall project.

Can JDI transfer existing tooling from another supplier?

Yes. We simplify tooling transfers by first evaluating your requirements, setting a realistic timeline, and pre-ordering necessary materials to ensure a smooth transition. When the mold arrives at our facility, we thoroughly inspect, repair, and test it to provide quality documentation and sample parts for your final approval before beginning full production.

What production volumes do you handle at your Palatine, IL facility?

We have the capability to handle smaller initial runs up to millions of parts annually. Additionally, our equipment and expertise allow us to hold tight tolerances consistently across these production runs.

What quality certifications does JDI Plastics hold?

JDI Plastics is ISO 9001:2015 certified and ISO 13485 compliant.