What is Transfer Molding?

Transfer molding is defined as a process during which a specific weight of polymer is placed into a special chamber called a transfer pot. The transfer pot is preheated before the polymer is placed inside. A sprue is then used and the polymer is put through a preheated cavity or opening, so it may take the shape of this opening or mold. Finally, the polymer is cured when pressure and heat are applied to it, so it permanently takes the shape of the mold.

The transfer molding process makes creating integrated packaging for circuits, and various other molded pins for electronic components that require a high level of precision and care, much simpler. The transfer molding process can also be used for the creation of thermoplastics. The most common use for transfer molding processes is for the creation of thermosets.

The process of transfer molding is quite simple. It is very much like the process of compression molding, however, there is one major difference. Instead of the polymer substance being loaded into a mold that is open, the polymer is forced into a closed mold after being melted down.

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