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Adhesive Contaminants (Stickies) and Methods for Removal

Published online by Cambridge University Press:  15 February 2011

John H. Klungness
Affiliation:
USDA Forest Service, Forest Products Laboratory, Madison, WI 53705
Mahendra R. Doshi
Affiliation:
Doshi & Associates Inc., Marathon Engineers/Architects/Planners, Inc., Appleton, WI
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Abstract

A variety of adhesive contaminants (“stickies”) are encountered in wastepapers. They are broadly classified as hot melts, pressure-sensitive adhesives, and lattices. Their properties and control methods are discussed. Specifically, control methods include furnish selection, improved pulping and deflaking, well-designed screening and cleaning systems, and dispersion and additives to detackify or stabilize stickies, or both. A new technology is also discussed regarding it's possible application for controlling stickie contaminants. Test methods for measuring stickies are also reviewed.

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