after the moulding product released from the shape moulding machine,we need to further dry the product,the reason are 1 drying moisture 2 prevention of shrinkage of products 3 Emission of residue blowing agents 4 reduction of moisure absorption rate during open-air storage.

EPS is commonly filled by air or vacuum,fused by steam,and cooled by water or vacuum,therefore, steam, water and ecectric power are the essential utilities for EPS molding.the eps Moulding process contains the following stage: filling heating cooling and releasing.

emergency procedures 1 stop injection of the raw materials and close the steam valve. 2 supply air into the system 3drain the expanded beads from the system through the outlet 4 report the situation to the supervisor to find out where the problem began and get trouble bleshooting measure.

EPS is short for Expandable polystyrene,the EPS resin is used for the moulding of EPS products.it is manufactured in the form of very small polystyrene beads with a weight-average molecular weight between 160000 and 260000 and contains 4 to 7 percent blowing agent.usually pentanes or butane.

during pre-expansion stage,the beads are heated to 90℃ by steam,the beads will soften;the blowing agent incorporated in the beads will vaporize.the pressure causes the EPS beads to expand to occupy 40~80 tims their original volume.it may reach its lowest and optimal pre-expansion density earlier using less steam than other competitive brands.if the operation is not controlled well,the over pre-e...