China EPS pre expander machine Manufacturers and Suppliers

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.

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Main Features

1.Feeding, expander, filtrating, crushing, transport to silos automatically

2.With first and second expansion, the first time filling adopt frequency conversion feeding device, guarantee the stability of feeding

3.Uniform foaming, foam density range is 6-35g/l

4.Material barrel inside and outside, fluidized bed dryer made of stainless steel, in order to maintain the durable use and stable performance

5.Electrical protection device

6.Adopt Japanese reducing valve

Technical Data

Item		Type
Item		PSY70	PSY90	PSY120
Expansion Chamber	Diameter	Φ700mm	Φ900mm	Φ1200mm
	Volume	0.6m³	1.2m³	2.2m³
	Useable Volume	0.4m³	0.8m³	1.5m³
Steam	Entry	DN20	DN25	DN40
	Consumption	80-100kg/h	100-150kg/h	150-200kg/h
	Pressure	0.6-0.8MPa	0.6-0.8MPa	0.6-0.8MPa
Compressed Air	Entry	DN15	DN20	DN20
Compressed Air	Pressure	0.6-0.8MPa	0.6-0.8MPa	0.6-0.8MPa
Drainage	Condensate	Φ20mm	Φ20mm	Φ20mm
Throughput	15g/l	100kg/h	150kg/h	250kg/h
	20g/l	120kg/h	200kg/h	300kg/h
	25g/l	150kg/h	250kg/h	410kg/h
	30g/l	200kg/h	300kg/h	500kg/h
Material Conveying Line		Φ150mm	Φ150mm	Φ150mm
Power		8.93Kw	9.73Kw	14.83Kw
Density	First expansion	12-30g/l	12-30g/l	14-30g/l
Density	Second expansion	8-11g/l	8-11g/l	8-13g/l
Overall Dimension	LWH	470026602600	470029303200	490546553250
Weight		1300kg	1500kg	1800kg
Room Height Required		3000mm	3000mm	3000mm

Pre-foaming process

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.