HIGH YIELD AND ENHANCED PERFORMANCE FIBER

摘要

A method of wood pulping having a significantly increased yield is disclosed. Wood chips are chemically pulped to a high kappa number, providing a first accepts component and a first rejects component. The first rejects component is subjected to a high consistency pulping process such as a substantially mechanical pulping process to generate a second accepts component and a second rejects component. The first accepts component may be used in the production of saturating kraft paper with excellent saturability and resin pick up. The second accepts may be used as a second fiber source in the production of multiply linerboard and unbleached paperboard with enhanced stiffness, strength, and smoothness. Alternatively, the first accepts component may be blended with the second accepts component to produce fiber blends, which may be used in a production of paper-based products having enhanced strength and stiffness at low basis weight.

主权项

1. A method of wood pulping, comprising steps of:
(a) chemically pulping hardwood chips to a kappa number of not less than 30 to generate a first amount of pulp including a first accepts component and a first rejects component wherein the ratio of the weight of the first rejects component to the weight of the first amount of pulp comprises about 6% to about 50%; (b) separating the first accepts component from the first rejects component; (c) performing a high consistency, substantially mechanical pulping of the first rejects component to generate a second amount of pulp including a second accepts component and a second rejects component; (d) separating the second accepts component from the second rejects component; and (e) combining the first and the second accepts components to create a fiber blend.