Automatic EPS Pre Expansion Machine Process

Automatic EPS Pre Expansion Machine Process

WINPLUS eps Preexpander machine has automatic cleaning function. When beads gravity changes, it is not necessary for the operator go inside the drying bed to clean the beads manually, the operator only need to push a button in the MMI, the cleaning will run automatically, in few minutes the...

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Product Details

eps expanding machine.jpg

eps expanding machine.jpg 


The automatic EPS pre expansion machine process is as below

Raw material is transported as granulate to the pre-expander and heated there by wet steam. Hot water vapour - as medium - softens the polystyrene beads and activates the blowing agent released in them. This blowing agent evaporates and causes the beads to expand. Based on the raw material weight and the volume of the expanded material the density is adjusted. The pre-expanded EPS-beads are cooled down and stabilized in the fluid bed before transports to the silos by a blower.


Finished products

During the subsequent intermediate storage the blowing agent diffuses from the pre-expanded beads and air gets in. This "packed air" is further processed in shape moulding machines or block moulds. For lower densities, EPS can be expanded again in a second cycle. For expandable polypropylene, EPP/HP pre-expanders for low-density foaming are available




Below is  some picntures of our Winplus EPS expanding machine detail for your reference.


Panasonic PLC.jpgFormula Storage  System.jpg
Panasonic PLCFormula Storage  System


Cabinet assembled professioally.jpgMain shaft and mixing rods.JPGTYPE YF3000 pre-expanding machine for one customer.jpgPID Valve from Germany.jpg
Cabinet Assembled 


Main Shaft And 

Mixing Rods

TYPE YF3000 Pre-expanding

 Machine For One Customer

PID Valve --Gemu


Side Discharge Door.jpgBottom Discharge Door.jpgPneumatic cabinet.jpg
Side Discharge DoorBottom Discharge DoorPneumatic Cabinet
Angle valves are all imported from Gemu Germany.jpgSpecially designed heating plates ensure the best heating.jpgSepcially designed brushing system ensures prefect brushing effect..jpg

Angle Valves Are All Imported 

From Gemu Germany

Specially Designed Heating Plates 

Ensure The Best Heating

Sepcially Designed Brushing System 

Ensures Prefect Brushing Effect

Leveling sensor control box.jpgLoading for shipment.jpgShipment to the customer.jpg
Leveling Sensor Control BoxLoading For ShipmentShipment To The Customer


Winplus is well-known as one of the leading EPS expander manufacturers and suppliers in China. We will offer you the best price and service.used automatic


Welcome to contact us, we will never make you unsatisfied


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