Custom Injection Molding

Engineered Plastics is a custom injection molder of plastics in Wisconsin. Custom plastic injection molding in WI is our main business function.

Engineered Plastics Corp. Engineered Plastics Corp.



Since 1981, Engineered Plastics has specialized in helping our customers succeed in today's low inventory and just-in-time environment. We know you need more than the highest quality parts at the right price - you need answers to your questions and solutions to your problems.
We specialize in custom injection molded thermoplastic parts using complex tooling and resins as well as liquid silicone rubber (LSR) molding. Our plastics molding capabilities include designing and running sophisticated tools with unscrewing cores, runnerless manifolds, and multi-cavity layouts including stack molds. Our expertise in close tolerance molding of engineering resins such as PPE, glass reinforced nylon and polyester, as well as commodity resins such as polypropylene and HDPE helps us find the right materials to meet the requirements of your finished product. Our technical approach and ability to design and work with complex molds provides our customers with the highest quality parts, on time, and at the right price.
Certifications and Awards
  • ISO 9001-2000 Certified (US05/0129)
  • UL Certified Molder (E251566)
  • Approved Supplier status from Pentair, Husco, Harley-Davidson, Kohler, JCI and Buell Motorcycles
  • Vollrath Premier Supplier
  • Society of Financial Service Professionals, Wisconsin Chapter Small Company Wisconsin Ethics Award in 2005
  • Wisconsin Manufacturer of the Year Nominee 2005
Engineered Plastics was featured in Injection Molding Magazine. Read about it here.

SGS