• Injection Molding
  • HandiWALL Extrusion
  • LED Lighting Fixtures
  • LED Extrusion
  • Custom Projects
  • Injection Molding
  • Co-Extrusion Frosted LED Lens
  • Injection Molding
  • Profile Extrusion
  • Finishing & Assembly
  • Commitment to Quality

63 Years of Experience

Leading the industry since 1955

"Inspired by our past, driven by our future"

We are Custom Plastics, Inc.

Custom Plastics, Inc. proudly serves as the Midwest’s premier plastic extrusion and injection molding company. Family owned and operated for six decades, our experience and commitment includes the latest technologies and innovations in plastic injection molding, extrusion, and engineering.

Partnering with OEMs worldwide from multiple industries, we manufacture plastic parts and assemblies that reduce overall part production costs, streamline the assembly and manufacturing process, and enhance end products with our value-added finishing services.

Custom Plastics has gained the industry's trust with unmatched customer service, industry leading quality control standards, and an on-time delivery rate of 99%.

Get in touch with us today!

To request a quote or ask a question:

View our contact information or call 847-439-6770.

Do you have questions about plastics?

Read our FAQ page to learn more.


  • Featured Project: AeroLidz Featured Project: AeroLidz
      ST. LOUIS 8/13/18 — AeroX Industries has developed a light bar cover for trucks that silences wind noise while driving.   Gabe Warner, founder and president of AeroX Industries, conceptualized the product after experiencing annoying wind noise from the new light bar on his truck. “I came back from a long drive and immediately picked...
  • Toshiba ECSXII Series Molding Machines
    2/19/2018 Custom Plastics, Inc. is proud to introduce our new Toshiba ECSXII Series molding machine. The EC200SXII is our first all-electric molding machine. Some of it's benefits include:  
  • Strategies in Light Show 2018 Strategies in Light Show 2018
     2/6/2018 Join us at Booth #322 at the Strategies in Light Show on February 13-15 at the Long Beach Convention Center located in Long Beach, California.  Professionals from all areas of the lighting industry are invited to attend this three-day conference and trade show. Strategies in Light will provide opportunities to learn, observe and engage...
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