Compression molding is a method in which molding material is placed in an open, heated mold cavity. Once the mold is closed by a plunger, the molding material is softened by applying heat and pressure, which causes the rubber to conform to the shape of the mold. Heat and pressure are maintained until the rubber product is cured. To reduce excess flash, molding materials are often preheated before inserted in the cavity mold.
The compression molding process begins by injecting the appropriate amount of molding material over the molded cavity. The mold is closed applying pressure and heat. An ejector pin or knockout pin is inserted in the bottom of the mold that quickly pushes the custom molded component out of the cavity.
With the ability to custom mold rubber and polymer components using compression molding, injection molding and transfer molding, the ISO certified company Advanced Rubber Products employs the appropriate method for your needs.