Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while heat and pressure are maintained until the molding material has cured; this process is also known as 'Vulcanisation'.[1] The process employs thermosetting resins in a partially cured stage, either in the form of granules, putty-like masses, or preforms.