Preventing Strength Loss of Unbleached Kraft Pulp | Zendy

Martin A. Hubbe | Zendy; Richard A. Venditti | Zendy; John A. Heitmann | Zendy

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Preventing Strength Loss of Unbleached Kraft Pulp

Author(s) -

Martin A. Hubbe,

Richard A. Venditti,

John A. Heitmann

Publication year - 2003

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/810827

Subject(s) - paperboard , kraft paper , kraft process , pulp and paper industry , pulp (tooth) , raw material , fiber , bonding strength , cellulose fiber , ingredient , paper production , composite material , materials science , chemistry , engineering , dentistry , mechanical engineering , food science , organic chemistry , medicine

Kraft pulp fibers lose inter-fiber bonding ability when they are dried during the manufacture of paper. Adverse environmental consequences of this loss include (a) limitations on the number of times that kraft fibers can be recycled, (b) reduced paper strength, sometimes making it necessary to use heavier paper or paperboard to meet product strength requirements, increasing the usage of raw materials, (c) decreased rates of paper production in cases where the fiber furnish has been over-refined in an attempt to regain inter-fiber bonding ability. The present study is the first of its type to focus on unbleached kraft fibers, which are a main ingredient of linerboard for corrugated containers. About 90 million tons of unbleached kraft fiber are used worldwide every year for this purpose

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