The function of forming board is to:

• support the forming fabric in the landing point of the jet

• be can easily positioned to use the power of the jet for a correct initial drainage

• utilize shear forces, generated by speed difference between fabric and jet

• generate sufficient turbulence by means of number, position and profile of the foils

• drain the correct water quantity (preventing the sealing of the sheet and the collapse of the retention)

• have a good structural rigidity to resist all the stress generated by the impact of the jet without vibration that could change the sheet formation


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