Bruckman Rubber Co. uses 15 injection presses capable of applying pressure up to 200T. The platen sizes for these presses run from 14” square to 20” x 22”.

Injection Molding Basics

Injection molding begins with strips of uncured rubber fed into a cylinder to be preheated. Once the material reaches the set temperature for optimal flow, it is fed through a runner system, through feeder holes, and into each cavity of the mold. There, heat and pressure are applied to the material until the rubber has cured. Parts are ejected from the mold, and the cycle begins again.


Injection molding lends itself to more automation and is better suited for high precision molding applications.


Because of higher start-up and shutdown costs, and increased tooling costs, injection molding is better suited for higher volume applications.