"Kraft Pulp: The High-Strength Foundation of Everyday Essentials"
Kraft Pulp
Kraft pulp stands out as a uniquely durable and high-strength material, forming the backbone of countless essential products we rely on daily. From printing and writing papers to tissues, coffee filters, and even specialized uses like fiber cement and traditional Japanese washi paper, its applications are vast and indispensable.
We produce premium-quality softwood and hardwood kraft chemical pulps, along with chemi-thermo-mechanical pulps. These versatile materials are integral to creating packaging, papers, tissues, towels, and various specialty items.
At the heart of kraft pulp production lies a careful balance of natural wood fibers, water, heat, and chemicals, delivering unmatched quality and strength for modern needs.
THE KRAFT PULPING PROCESS
We make kraft pulp by mixing wood fibres with a solution of caustic soda and sodium sulphide, and cooking them inside a digester. This separates the fibres from the lignin, which is a natural glue-like substance that binds them together. Our production facilities are designed to recover and reuse much of the water, chemicals and steam used in the process.
PUTTING SAWMILL LEFTOVERS TO USE
The fibre we use to make kraft pulp is mainly made up of leftovers from lumber mills. These wood chips and shavings were once considered waste and sent to landfills or burned. We match tree species and other pulp characteristics with customers’ end-use requirements, and control blending and bleaching to exacting specifications.
ENVIROMENTAL ASSURANCE
As with all products from our Canadian mills, our kraft pulp is made from responsibly sourced fibre and in facilities that have achieved sector-leading greenhouse gas reductions. We use a lower-impact elemental chlorine-free bleaching process. With our chain-of-custody systems using globally recognized standards, we can provide pulp that is certified as originating from sustainably managed forests for those customers wishing additional assurances
THE KRAFT PULP PROCESS
WOOD CHIPS
Kraft pulp (a type of chemical pulp) is made
using raw wood (both soft wood and hard
wood) chips which are pre-steamed in steaming
vessel. Steamed chips are then cooked inside
a pressurized digester with a combination of
chemicals and heat to dissolve the lignin glue
which holds the wood fibres together
DIGESTER AND BLOW TANK
The digester’s pressure is relieved into a blow
tank which separates the chips into unbleached
pulp fibre.
SCREEN AND WASHING
Residual chemicals are removed and recycled in
the brown stock washing stage
BLEACHING
The pulp is then bleached to its recognized bright white color in the bleach plant
PRESSING AND DRYING
The bleached pulp is then diluted to a slurry where it is sprayed across a pulp machine
screen to form the pulp mat and begin the dewatering process of pressing and drying
in the dryer section.
PULP BALES
The dried pulp is then cut and baled into 400 kg bales on the baling line in preparation
for transport around the world.
