Preventing Strength Loss of Unbleached Kraft Pulp

Hubbe, Martin ; Venditti, Richard ; Heitmann, John

North Carolina State University (United States)

关键词: Paper;    Mechanical Properties;    Fibers;    Recycling;    32 Energy Conservation, Consumption, And Utilization;   

DOI  :  10.2172/810827
RP-ID  :  DOE/ID/13878
RP-ID  :  FC07-00ID13878
RP-ID  :  810827

美国|英语

来源: UNT Digital Library

【 摘 要 】

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.