Kraft paper

Kraft paper or kraft is paper or paperboard (cardboard) produced from chemical pulp produced in the kraft process. Pulp produced by the kraft process is stronger than that made by other pulping processes; acidic sulfite processes degrade cellulose more, leading to weaker fibers, and mechanical pulping processes leave most of the lignin with the fibers, whereas kraft pulping removes most of the lignin present originally in the wood.

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