Effect of Beating on Coir Handsheet Properties


Coconut fibers or coir was examined to determine its potential value for pulp and papermaking. Alkali pulping was investigated by using caustic soda on a laboratory scale and then the pulp was beaten in a PFI mill at 0, 750, 1500, 3000 and 10000 revs. The fiber parameters were detected by projection microscope and SEM. While, the main mechanical properties of handsheet produced from soda processes were evaluated on 60 g/m2 test sheets as functions of the following parameters: tensile index and tear index. The results showed at a PFI mill revolution number of 1500 revs, the properties of handsheet reached the optimum values.

Keywords: alkali pulping; beating; handsheets; tensile index; tear Index

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