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Wood-fibre for future products from pulp

Wood-fibre for future products from pulp. Paul Kibblewhite. Wood-fibre for papermaking The next 10 – 20 years. Fibre property interrelationships. Wall area  Coarseness Number  1/(wall area x length) Width/thickness = Fibre collapse (in dried sheet)

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Wood-fibre for future products from pulp

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  1. Wood-fibre for future products from pulp Paul Kibblewhite

  2. Wood-fibre for papermakingThe next 10 – 20 years

  3. Fibre property interrelationships Wall area  Coarseness Number  1/(wall area x length) Width/thickness = Fibre collapse (in dried sheet) Perimeter/wall thickness  1/(Wood density)  Collapse

  4. Softwood versus Hardwood fibres

  5. Furnish mix components • Softwood fibres for reinforcement, runnability and robustness • Hardwood fibres for bulk, surface & optical properties, and formation

  6. Eucalypt fibre selection for papermaking • Plantation-grown species, hybrids and clones • Short crop rotations at 5+ years • Chip density about 550 kg/m³ • High kraft pulp yield • Target fibre coarseness, length and collapse resistance • Target sheet bulk and tensile strength

  7. Globulus a premium eucalypt fibre-type

  8. Where to in short-term? • Conventional breeding and propagation technologies • Short crop rotations • High forest productivity and disease resistance • Emphasis on low cost, rapid propagation procedures, and screening tools • Genetic modification of lower priority

  9. Softwood fibre-types

  10. Softwood pulp uniformity by fibre-type

  11. Northern is the premium softwood fibre-type • Low coarseness • long and slender • High number • Low MFA • High hemicelluloses • Low refining energy • Long crop rotations

  12. Northern fibre-type from radiata pineHow Do? • Wood/chip segregation • Pulp fractionation • Conventional breeding, hybridisation and cloning • Genetic modification

  13. Market kraft categories through wood/chip segregation

  14. “Rods and Ribbons”Pulp fractionation by fibre collapse

  15. Breeding for fibre quality Select for Low Fibre Coarseness while retaining or increasing Density and Length

  16. CoarsenessWood-fibre number

  17. Radiata pine fibre improvements in the short-term Wood/chip segregation • Further advances limited Pulp fractionation by fibre collapse • Yet to be achieved Genetic modification, and breeding for low coarseness • Pulp mill is a residue user • “Change” required for pulpwood regimes and fibre quality improvement

  18. Pulp-fibre for papermaking 50 years on!Who Knows? Today’s commodities • Tissue, sanitary and packaging products, possibly OK • Junk-mail, newsprint, communication and hard-copy, probably limited? Today’s specialty cement reinforcement pulp?

  19. Wood-fibre for future bio-products from pulp:A 50-year horizon

  20. Softwood and Eucalypt-type pulp-fibre 50 years on • Short rotation pulpwood regimes (5 – 10 years) • Highly uniform fibre property populations • Earlywood- and latewood-type pulps • Wide range of chemical and physical fibre-property combinations

  21. Many possible fibre property combinations1. Separate EW & LW fibre populations

  22. 2. Low or high coarseness rod-like fibre populations

  23. 3. Four plus fibre-property combinations for future products from pulp

  24. Fibre property combinations Designer fibres through Purpose-grown, short-rotation crops for Sustainable designer products

  25. Fibre-property-combination research Genetic modification A critical success requirement • Assay procedures to screen genotypes at the plantlet stage (3 months?)

  26. Back to Reality! Who pays? • Fibre-property-combination research and development • Product identification processes • Fibre property combination selection and supply • Product development Constraints • Costs • Sustainability, and product- and market-driven • Green-house effect

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