Wood Chips Roundwood Wood Species & Volumes Pulping Characteristics Product Data Sheets Pulping Characteristics   UNIT SOFTWOOD HARDWOOD Wood Density BDKG/m3 360 - 380 530 - 545 Fibre Length mm 2.3 - 2.5 0.7 - 1.0 Pulp Yield % 48 - 50 52 - 56 Bulk cc/g 1.35 1.5 Tensile km 14.3 7.0 Burst Index kPa.m2/g 11.0 6.0 Tear Index mN.m2/g 10.5 7.5 Results may vary from mill to mill. Top Glossary Wood Density: Relates to the bone-dry weight per volume of green wood. Fibre Length: The length of the fibre specific to the species of wood fibre. Pulp Yield: Pulping yield based on bone-dry wood for unbleached kraft. Bulk: A function of the extent of collapse and conformability of the fibres during sheet formation. Tensile: The length of paper which will just support its own weight when hung freely from one end. Burst Index: The pressure required to rupture a paper sample clamped over a rubber diaphragm. Tear Index: The loss of energy related to the force required by a falling pendulum to continue the tear. Additional information on fibre characteristics is available from the following sources: www.paprican.ca www.econotech.com Top ©2011 GNT | About Us | Facilities | Fibre Supply | Products & Services | Markets | Certification | Specifications | Contact