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Chapter 8. Pulp and Paper - Rural Tech

pulp and Paper1 pulp Yield 96 Mechanical Pulping 96 Chemical Pulping 96 Kraft (sulfate) process Sulfite process Hybrid Pulping Methods 97 Dissolving pulp 97 Estimating Wood Required per Ton of pulp 97 Paper and Paperboard 99 Basis Weight and Grammage 99 Basis weight Grammage Thickness (Caliper) 99 Density and Bulk 100 Chapter 8. pulp and Paper 2 Chapter 8 Chapter 8. pulp and Paper pulp is the fibrous mass that results when a pulping process ruptures the bonds in the wood structure that hold the woody cells together.

softwoods, tannin-containing hardwoods, and any furnish containing bark. Hybrid Pulping Methods A number of processes are hybrids of chemical and mechanical methods and have intermediate yields. Generally, chips are partly softened or digested with chemicals and then are mechanically converted to fiber, usually in disk refiners.

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Chapter 7. Chips, Sawdust, Planer Shavings, Bark, …

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