XPS foam board production line
Production introduction:
XPS heat insulation plate extrusion line consists of following unit: mixing unitsingle screw extruder or parallel twin screw extruder, foaming agent injection system, static mixer, extrusion die, calibration unit and downstream equipments. The features of this line are excellent specification, reasonable design, high output capacity, low energy consumption and stable system.
In the XPS process, polystyrene pellets, like those used to produce rigid sheet for thermoforming, are melted and blended in a regular tandem extrusion system. The extruders pump the melted material through a flat die after the foaming agent (usually based on CO2 or Hydrofluorocarbons - HFC) is injected and homogenized in the primary extruder, the polymer is extruded into secondary extruder for further homogernization and lower temperature. The foaming effect occurs as a result of the change in pressure once the polymer starts exiting the die. It is controlled as the extrudate or hot material expands between adjustable calibrating plates set to the final required thickness. Located after the plates are a train of rollers also helping to control the growth and therefore the thickness while transporting the material forward towards the finishing stations. Quality control measurements for flatness and thickness are performed before the boards are finished. The foamed product must cool and mature before it is ready for the finishing operation.
Keywords: xps foam board production line, xps foam board extrusion line, xps foam board making machine, xps foam board extrusion machine.
Comparing with other traditional heat insulation material(such as EPS\PU),XPS heat insulation plate features with better heat insulation, non-absorption of water, stress resistance, heat preservation, convenient installation and low cost. Therefore this plate can be widely used in house insulation system\cold storage\camps\barns and civil constructions, ground constructions such as air raceway, square, road and civil engineering constructions.
