Special designed vacuum heating technology reduces the drying time of the expanded beads as much as possible, the maturing time in the silos is shortened greatly, the output will be improved much. At the same time the silo qty will be reduced so as to meet the limited space inquiry of the customer.

Patent-designed bottom discharge unit reduces discharging time and enhances production capacity. Low pressure steam control design optimizes energy efficiency and minimizes consumption. Automatic density tolerance control system(optional) ensures precise pre-expanding density with ease. Formula storage mode enables seamless and efficient operation.