Application of spruce wood flour as a cellulosic-based wood additive  for recycled paper applications— A pilot paper machine study, TAPPI Journal October 2021



Application: This paper introduces readers to wood flour as an alternative plant-based additive for recycled newsprint and linerboard paper applications. The study was conducted on a 12-in. laboratory pilot paper machine. 

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Author: Klaus Dölle adn Sandro Zier
Application of spruce wood flour as a cellulosic-based wood
ABSTRACT: This study gives a first insight into the use of wood flour as a plant-based and cellulosic-based alternative additive for newsprint and paperboard production using 100% recycled fibers as a raw material. The study compares four varieties of a spruce wood flour product serving as cellulosic-based additives at addition rates of 2%, 4%, and 6% during operation of a 12-in. laboratory pilot paper machine. Strength properties of the produced news-print and linerboard products were analyzed. Results suggested that spruce wood flour as a cellulosic-based additive represents a promising approach for improving physical properties of paper and linerboard products made from 100% recycled fiber content. This study shows that wood flour pretreated with a plant-based polysaccharide and untreated spruce wood flour product with a particle size range of 20 µm to 40 µm and 40 µm to 70 µm can increase the bulk and tensile properties in newsprint and linerboard applications.
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