Hangzhou Welleps Technology Co., Ltd.
Eps Pre Expander Machine
EPS pre expander machine guarantee a high degree of automation, reliable control and reproducibility as well as a uniformly foamed product. Together with simple operation, they bring calculable economic advantages.
Most popular related searches
- Feeding, expander, filtrating, crushing, transport to silos automatically
- With first and second expansion, the first time filling adopt frequency conversion feeding device, guarantee the stability of feeding
- Uniform foaming, foam density range is 6-35g/l
- Material barrel inside and outside, fluidized bed dryer made of stainless steel, in order to maintain the durable use and stable performance
- Electrical protection device
- Adopt Japanese reducing valve
The EPS raw material is conveyed as granules to the pre-expander, where it is heated by means of wet steam. The hot steam softens the polystyrene beads and activates the blowing agent dissolved in them. This evaporates and causes the softened beads to expand.The bulk density can be adjusted by the weight of the raw material and the foamed volume.
The EPS beads pre-expanded are then cooled and stabilized in a fluidized bed on an air cushion before being conveyed by blower via a rotary feeder into the silos.