Precision Plastic Injection Molding, Assembly & Finishing Under One Roof
Midwest Plastic Engineering is a custom injection molder with more than five decades of experience, 32 presses ranging from 75 to 850 tons, and in-house assembly and value-added services that take your program from resin to finished, shippable product.
End-to-End Capabilities
Injection Molding
32 presses from 75 to 850 tons running unfilled, filled, and engineering-grade resins for tight-tolerance production parts.
In-House Assembly
Sub-assembly, insert installation, and value-added kitting that deliver a complete component ready for your line.
Value-Added Services
Pad printing, ultrasonic welding, machining, decorating, and more — finishing steps handled under one roof.
Precision. Trusted. Integrated.
Three commitments guide every job we run — precise molding, a complete single-source solution, and a family-owned partner you can trust.
A Molder Built on Maintained Equipment and Repeatable Quality
Throughout our history we have purchased nearly every press brand new, then continually maintained and rebuilt them — including control-system upgrades for complex parts and on-hand replacement screw and barrel assemblies to minimize downtime. The result is consistent, repeatable production you can schedule around, backed by an ISO 9001:2015 certified quality system and TS-16949 MAQMSR compliance.
Materials We Process
Unfilled and filled materials such as polypropylene and polyethylene, rigid and flexible PVC, ABS, and nylon — plus engineering-grade plastics including polysulfone, PPS, acrylics, polycarbonates, and various alloys.
Ready to discuss your program?
Send us your part print, resin, and volumes. We’ll help you find the right press, tooling, and finishing path.
