How Is EPE Foam Made?

EPE foam sheet machine after adding the low density high pressure polyethylene and the talcum powder into extruder, through mixing、plasticizing、melting and homogenizing in screw barrel，injecting the butane and monostearin through the pressure metering pump.

Then, all materials get full contact 、mixing、homogenizing with each other under the condition of appropriate temperature，formation the foam, extruded by machine head through the filter screen net, through the sizing devise , cooling, cutting, flattening and the traction ,static elimination, second flattening, rolling by the rolling machine finally to get the ready product.

As with most types of foam such as expanded polypropylene foam (EPP foam), expanded polyethylene (EPE foam), is manufactured by the application of high pressure, heat, as well as a blowing agent in a pressurized chamber called an autoclave.

The molten foaming polyethylene material is then made into small plastic beads in a machine that uses water to cool and form the beads. 

The resultant plastic beads are used as feed material and injected into specialized moulds under high heat and pressure to force the beads to melt and take the shape of the mould.

The manufacturing process of EPE foam is pretty straightforward, and mostly involves the use of high temperatures and pressures in a sealed and pressurized container. 

The leftover EPE material that is in the form of beads or defective pieces, or even material that has seeped through the material, can be collected and fed back into the machine to produce whole new pieces.

This is how to make polyethylene foam and is the principle behind the recycling of EPE foam material as well.