smc high precision manhole compression mould

Compression molding is a method of molding in which the molding material, generally preheated, is first used in an open, heated mildew cavity. The mold is closed with a top force or connect member, pressure is put on force the material in contact with all style areas, while heat along with pressure are maintained till the molding material includes cured; this process is recognized as compression molding method and in the event of rubber it might be known as 'Vulcanisation'. The task employs thermosetting resins inside a partially cured stage, either comprising granules, putty-like masses, or maybe preforms.

Compression molding is often a high-volume, high-pressure method suited to molding complex, high-strength fiberglass reinforcements. Advanced composite thermoplastics can be compression molded with unidirectional tapes, weaved fabrics, randomly oriented dietary fiber mat or chopped strand. The advantage of compression molding is its ability to mold large, fairly intricate pieces. Also, it is among the lowest cost molding methods vary other methods such as transfer molding and shot molding; moreover it squanders relatively little material, giving it a plus when working with costly compounds.