Single Source Responsibility

Proto Plastics partners with you through the critical phases of the product development and launch process while leveraging our fully-integrated capabilities. With your support and approval, we control the entire process in-house, from engineering and tooling through injection molding and assembly. Our program management team guides each project from plastic part design and development through part approval and production. Bringing your project in on time and on budget is our main objective.

Part Design & Engineering

We’ll tell you whether your initial design can be efficiently molded, and offer helpful design assistance.

Supply Chain Services

We work with you to develop delivery and stocking programs to fit your production schedule.


Product Design And Development Quality Management System


Plastic Materials

We’ve molded nearly 200 different rigid and flexible thermoplastic resins, including many filled materials.

Finishing & Assembly

Our value-added services include component sourcing, custom assembly, sonic welding, multi-color printing and more.

Plastics Tooling

Our advanced modeling software, in-house machine shop and outside tooling sources, create precision tooling that meets your most demanding specifications.

Injection Molding

All of our machines are recent vintage Cincinnati Milacron, providing consistent processing and repeatability.