EPS auto batch pre-expander, EPS beads making machine is functioned to expand EPS raw material to the required density. Material filling and expanding are done batch by batch, so it’s called Batch pre-expander. EPS auto batch pre-expander EPS beads making machine is a complete automatic EPS machine. All steps work automatically like EPS material filling, weighing, material conveying, steaming, stabilizing, discharging, drying, and expanded material conveying.
Inside EPS raw beads, there’s the blowing gas called pentane. After steaming, pentane starts to expand, so the bead size also grows bigger. This is called expanding. EPS raw beads cannot be used to make blocks or packaging products directly, and all beads need to be expanded first, then made other products. Product density is decided during Pre-expanding, so density control is done in Pre-expander.
● Steam system: steam pressure reducer and angle valve to control steam
● Filling system: adopts electronic weighing system and material filling automatically
● Material level control: adopts photo sensor to control the expansion level
● Electric control: adopts PLC controller and touch screen to keep the process working automatically