The popular EPS recycling machine on the market are commonly two types, one is EPS compactor, the cold compress machine is safe and pollution-free, and the other is EPS densifier, which is efficient and easy to operate. Both of the two types of machines aim at foam volume reduction and making loose foam into dense ingots, among which EPS foam densifier is more popular. So, how does the EPS densifier work?
Crush loose EPS foam into pieces
The first step for EPS foam volume reduction is crushing. EPS densifier is usually equipped with a crusher, you need to put the loose EPS foam boxes into the crusher hopper, the equipment will crush the loose and bulky foam into small pieces, which is more convenient for the next step.
Melt foam scraps with heat
The crushed foam scraps will fall into the screw heating chamber. When the EPS gradually accumulates, the motor will quickly heat up to melt the foam. The feeding speed during the melting process needs to be controlled at a stable frequency, too fast or too slow will cause the material to block the equipment.
Extrude foam ingots out after melting
With the accumulation of foam scraps, the melted foam waste can be continuously and slowly extruded under the push of the screw. The hot melt foam ingots that have just come out may not be shaped well. If the material is continuously fed for a period of time, the melted foam ingots will become smooth and in high quality. You can put a tray at the discharge port to fix the hot melt into dense blocks.
GREENMAX EPS densifiers are used to compact loose foam products into dense blocks for easier transportation or storage before recycling. The traditional baler can be used to compact the foam, but the effect is not so good. A 48-foot truck of bale foam weighs about 16,000 pounds, while a truck of dense foam weighs 40,000 pounds. The efficiency of the EPS densifier is not only more than 2 times, and the compressed material can also be sold, thus creating a great economic benefits.