JDI Plastics
Industries We Serve: Custom Plastic Injection Molding, Insert Molding & Overmolding
JDI Plastics works with engineers and purchasing managers in medical, electronics, automotive, sporting goods, construction, agriculture, and mining sectors to manufacture thermoplastic parts that meet tight specifications. Founded in 1995, ISO 9001-certified, and ISO 13485 compliant, JDI handles complex geometries and specialized materials, with tolerances to +/- 0.001 inch, supporting projects from initial prototyping through high-volume production runs across several industries.
Medical Devices & Healthcare
Medical device manufacturers require injection molding partners who understand regulatory compliance and material traceability. Medical device injection molding at JDI Plastics addresses these needs through documented processes, ISO 13485-aligned quality systems, and manufacturing environments designed to minimize the risk of contamination.
Our facility manufactures components for diagnostic equipment, surgical instruments, and patient monitoring devices. We work with medical-grade materials, including polycarbonate for transparent housings, nylon for structural components, and specialty polymers that withstand repeated sterilization cycles. Each production run uses virgin resin to meet FDA material requirements, and we maintain batch records for full traceability.
The medical sector demands tight tolerances and consistent part quality. Our quality systems track dimensional accuracy across production runs, and we offer secondary services including ultrasonic welding for hermetic seals and custom packaging designed to maintain sterile barriers. JDI supports medical device injection molding programs with secondary services, including ultrasonic welding and custom packaging, to maintain part integrity throughout the production and shipment process.
Electronics
Electronics manufacturers need injection molding partners who can produce housings, connectors, and internal components that protect sensitive circuits while meeting aesthetic requirements. Injection molding electronics components requires material selection expertise and precision tooling to achieve the thin walls and tight tolerances these applications demand.
We manufacture enclosures for consumer electronics, industrial controls, and telecommunications equipment. Common materials include ABS for impact resistance, polycarbonate for clarity and strength, and specialty grades with flame-retardant properties for safety compliance. Our molding capabilities extend to small connectors with feature details measured in tenths of millimeters and larger housings that require consistent wall thickness to prevent warping.
Injection molding electronics components often requires additional processes beyond molding. We provide pad printing for logos and operation indicators, heat staking for assembly joints, and ultrasonic insert welding to install threaded fasteners. These secondary operations are performed at our facility, reducing lead times and maintaining quality control throughout the production sequence.
Sporting Goods
Sporting goods manufacturers require components that withstand repeated impact, environmental exposure, and user handling. We produce parts for recreational equipment, fitness devices, and outdoor gear using materials selected for toughness and weather resistance.
Applications range from protective housings for electronic fitness trackers to structural components in recreational equipment. Material choices vary based on the end use: polycarbonate provides impact resistance for protective covers, nylon delivers strength and abrasion resistance for moving parts, and TPE creates comfortable grip surfaces. We can incorporate features like textured surfaces for improved handling and integrated snap fits to simplify assembly.
The sporting goods sector often requires shorter production runs and seasonal volume changes. Our molding capabilities scale from prototype quantities through production volumes. Standard lead time is approximately four weeks, depending on job scope, and we maintain tooling on documented preventive maintenance schedules to sustain part consistency through volume changes.
Construction & Tools
Construction and tool manufacturers need injection-molded components that survive demanding jobsite conditions. We manufacture housings, handles, and mechanical components for power tools, hand tools, and construction equipment, using materials selected for their impact resistance and long service life.
Common materials include nylon for structural components that require stiffness and mechanical strength, rigid PVC for protective housings, and TPE for ergonomic handles and grips. Injection mold construction applications benefit from our ability to mold components with integrated mounting features, eliminating secondary assembly operations and reducing failure points.
Construction components often require secondary operations to add functionality. We provide mechanical assembly for multi-component tools, heat staking to attach metal inserts, and pad printing for brand identification and safety markings. These operations are completed at our facility, so components arrive ready for final product assembly, eliminating the need for additional vendor coordination.
Mining and Agriculture
Mining and Agriculture operations demand equipment components that withstand abrasive materials, chemical exposure, and extreme operating conditions. We manufacture injection-molded parts for mining equipment, safety gear, and material handling systems using engineering-grade thermoplastics selected for durability and chemical resistance.
Applications include protective covers for electronic components, wear parts for material handling equipment, and housings that shield sensitive instruments from dust and moisture. Material selection focuses on HDPE for chemical resistance, nylon for mechanical strength, and specialty grades formulated to maintain properties across wide temperature ranges.
Agriculture components often require custom specifications based on the operating environment. We work with mining and agriculture equipment manufacturers to select materials that balance cost against performance requirements, and our secondary services, including solvent bonding and mechanical assembly, produce finished components that integrate directly into equipment assemblies.
Automotive
Automotive suppliers face pressure to reduce weight, improve fuel efficiency, and meet durability standards. Automotive injection molding replaces metal components with engineered thermoplastics that deliver strength at lower weights while accommodating complex shapes that would be difficult or expensive to produce through metalworking.
Our automotive injection molding work includes interior trim components, under-hood parts, and exterior elements. We mold with materials selected for specific performance requirements: ABS and styrene for interior applications, nylon and acetal for mechanical components requiring wear resistance, and TPE for seals and soft-touch surfaces. Parts undergo dimensional verification to ensure proper fit within vehicle assemblies, and we maintain preventative maintenance schedules on production tooling to sustain part consistency across long production runs.
JDI Plastics engages automotive manufacturers early in the design process to identify opportunities where thermoplastic components can reduce cost, reduce weight, or replace metal parts without sacrificing performance. Our material selection expertise guides decisions on which thermoplastics will meet temperature exposure, chemical resistance, and mechanical load requirements for each automotive injection molding application.
Capabilities Across Industries: Materials, Equipment, and Secondary Services
While we maintain core capabilities in the medical, electronics, automotive, sporting goods, construction, and mining sectors, we can mold for any industry that requires precision thermoplastic components. Our material expertise spans commodity resins through engineering-grade polymers, including:
- Nylon and polycarbonate for mechanical applications
- ABS and styrene for general-purpose housings
- PVC (rigid and flexible) for chemical resistance
- HDPE and LDPE for environmental durability
- Acetal, LCP, PEEK, and polysulfone for high-performance requirements
- PET and acrylic for clarity and appearance
- Many more
Our Illinois facility houses 20 molding machines, with a capability spanning small-part precision work through large-component production. Our automation systems run 24/7 and improve run-to-run consistency.
Secondary services extend our value beyond basic molding. Component bonding through ultrasonic welding, heat staking, and solvent bonding creates assemblies without external fasteners. Wire assembly and soldering add electrical connectivity. Custom packaging, labeling, and barcoding prepare finished components for direct integration into customers’ production lines.
We approach each project with early supplier involvement, working with design engineers to identify opportunities to improve manufacturability or reduce cost through changes in material selection or part geometry. Tooling is sourced and managed through JDI as part of the program, with preventative maintenance performed on documented schedules. We support tooling transfers when customers are transitioning from a previous supplier or consolidating production.
Request a Quote from JDI Plastics
JDI Plastics manufactures complex thermoplastic components for customers who require more than standard molding services. Our expertise in difficult-to-mold geometries and specialized materials addresses the challenges other molders avoid. Whether your project involves medical device injection molding, electronics injection molding, automotive injection molding, or injection mold construction, our capabilities support your requirements from prototype through production.
Engineers and purchasing managers work directly with the company owner, not a tiered account team, to resolve technical questions and keep programs on schedule. JDI offers competitive pricing with no rush fees, a standard four-week lead time, and ISO 9001 certification backing every production run.
Contact us to discuss your injection molding project. We’ll review your specifications, recommend materials suited to your application, and provide a detailed quote for your custom components.