The Effect Of Malaysian Tropical Hardwood's Properties On Chips' Size Distribution And Acceptance For Kraft Pulping

Chip quality has an effect on the quality of kraft pulp. Chips 10 to 30 mm long and 3 to 6 mm thick ate prime materials for pulping. The chips' size is affected by wood quality and processing it undergone. In this experiment, the effect of wood's density, moisture content and feed length of three Malaysian tropical hardwoods on chips' production were studied. The woods were chipped by a drum chipper at FRIM, Kepong. These chips were screened into different diameter sizes by vibrated screens. Their thickness were measured by caliper. The studies found that wood's density, moisture content and feed length have an effect on chip's distribution size and on the quantity of acceptance chips for kraft pulping. It is also found that chips' thickness is related to its diameter