What is compression molding?
Direct compression molding involves positioning a preformed blank of rubber mixture directly into the cavities of a mold. The mold is then heated by the press plates, allowing the fluidization of the material and its vulcanization. With the help of our molders, we create tools perfectly suited to the geometry of your parts. Today, we have a bank of customer-specific tools which includes thousands of molds and shapes, particularly for O-rings and flat seals. .
Compression molding at ITC
Direct compression molding requires weighing the material and preparing raw mixture blanks which will then be placed directly in the mold cavity before vulcanization (cooking).
The stages of compression molding
The mold is first warmed up before placing the raw rubber on the impression. Putting the rubber under pressure will allow the material to fill the entire impression.
Throughout the process, the temperature will be maintained in order to vulcanize the material. The vulcanization time is more or less long depending on the elastomers used, the size and geometry of the part. The part is then cooled before being demolded, deburred and checked.
Compression molding is a commonly used process for shaping elastomer parts.
Processed materials: all types of elastomers – Natural Rubber, EPDM, Polychloroprene, Nitrile, SBR, Butyl, FKM, FFKM, Viton, Silicone… Call our team to assist you in the creation of your molded part.
