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Kingston Plastics

Custom Injection Molding

Injection Services

Turnkey Injection Molding for Complex Plastic Programs

From part concept and tooling through stable, repeatable production.

Kingston Plastics handles complex plastic and multi-material applications with a practical manufacturing approach built around throughput, tooling reliability, and part consistency.

We support customers from early engineering review through validated production, with the goal of reducing risk before scale exposes design or process weaknesses.

Injection molding services and production tooling

Tooling and process decisions determine production stability.

Good tooling starts with sound design and practical manufacturing experience. Kingston Plastics focuses on tool efficiency, maintenance planning, and revisions that protect output once a program is in motion.

CAD/CAM technology supports part and mold design collaboration, file translation, and project recommendations. Mold flow analysis is performed when the part or process calls for it.

If the application is difficult, the right answer is usually a better process plan, not more firefighting after launch. Tell us the problem and we will work through it.

Core Specialties

Practical molding support from resin choice to delivery planning.

Injection Molding

  • Prototype development through production runs up to 5 million parts
  • Thermoplastics and engineered materials including ABS, nylon, polycarbonate, PPO, polysulfone, and TPR
  • Machine range from 15-ton / 0.7 oz through 300-ton / 20 oz
  • 30-ton / 20 oz shuttle capability for additional program flexibility

Insert and Multi-Material Work

  • Metal and plastic insert molding combinations, among many others
  • Plastic plus plastic, rubber, or paper combinations
  • Programs requiring tighter fit, durability, and assembly integration

Secondary Operations

  • Sonic welding, assembly, and hot stamping
  • Decoration, drilling, tapping, plating, and heat staking

See product-side support

Development Support

Engineering, logistics, and production planning that stay connected.

Injection molding projects succeed when engineering decisions, machine capability, and delivery planning are treated as one system rather than separate handoffs.

  • Engineering support throughout product development
  • CAD/CAM part and mold design collaboration
  • Daily truck service between Milwaukee and Chicago
  • Air and ground shipping options
  • Production planning aligned with customer schedules

Kingston Plastics is built to support both development-stage parts and long-running production programs with dependable follow-through after launch.

Injection molding equipment and custom molded parts

Project Review

Bring the difficult molding problem first.

We can review tooling concerns, resin choices, insert combinations, and secondary operation needs before they become production bottlenecks.

Injection molding support tools and engineering resources

Best fit for

  • Programs that need tooling and process guidance before launch
  • Projects with multi-material or insert-molding complexity
  • Customers moving from prototype work to repeat production
  • Teams that need dependable shipping and schedule coordination

Next Step

If you need a turnkey molding partner from concept through validated production, contact Kingston Plastics and outline the part, resin, and production goals.