EPP preload pressure system –

Before processing EPP , it is necessary to increase the pressure inside the raw material particles by carrying pressure to produce lower density moldings. This is because the pressurized raw material enables the production of various densities of molded parts. In addition, the load pressure can also reduce the shrinkage of the molded part after demolding, and the surface effect is better. Specifically, the carrier pressure is achieved by gas penetrating the outer wall of the particles. During this process, the carrier pressure can be adjusted by changing parameters such as time, pressure, and temperature. After the pressurization process, the density of the molded product is reduced.

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