The Crosshead Spray System is a custom-built unit for the semi-continuous production of flat and shallow profile GRC sheets and panels. The crosshead (or autospray) process is based on the principle of a spraygun/chopper continuously reciprocating above a mould carried beneath it on a speed controlled conveyor.
The speed of the reciprocation is normally fixed at approx. 60M/min. while the conveyor speed can be varied to enable differing width and thicknesses of panel to be produced. Due to the controlled speeds of crosshead and conveyor consistent panels can be produced at high production rates within tolerances of plus/minus 0.5mm on 10mm thicknesses. Based on a nominal spraygun output of 30Kgs slurry per/min panel outputs of up to 80M2 thickness per hour can be achieved although it must be emphasised that the production rates are constrained by factors such as slurry mixing, mould availability and storage space.
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