Compression molding

Many people are familiar with injection molding or plastic molding but not all are familiar

compression molding
Compression molding

with compression molding

Compression molding is a molding process whereby  the pre heated molding material, goes in  an open, heated cavity. The mold is closed with a  plug and  pressure is applied to force the plastic or rubber  into contact with all mold areas while applying heat and pressure. Compression molding uses  thermosetting  compounds and is is a high-volume, high-pressure method suitable for molding complex reinforcements.

Compression molding is often used for making electrical parts, flatware, gears, buttons, buckles, knobs, handles,  cases,  housings, and large containers.The advantage sof compression molding include  setup costs, quick setups, large size parts, intricate pieces and a nice  finish.

Companies that manufacture parts from compression molding include Reliance Engineering.

Injection molding machines with high positioning accuracy and high repeat-ability such as our hydraulic and electric ALLROUNDERs, are in demand for compression injection molding.  You must be careful  when selecting compression technology and for the design and layout of the mold.

Another company that can manufacture large plastic parts via thermoforming and heavy gauge thermoforming is Mayfield Plastics in Sutton Ma.