Effects of Deinking Chemicals on Tackiness of Adsorbed Stickies, 2013 PEERS Conference

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The conventional pulping chemistry used for old newsprint and old magazine can release latex binders used in coatings for paper that can generate stickies and produce deposits at the paper machine. Early work by Thomas Krauthauf using the Forced Adsorption Contact Analyzer produced useful information on how sodium hydroxide, sodium silicate, hydrogen peroxide and deinking chemicals effected deposit build-up on a PET (polyethylene terephthalate) foil. The work with the conversion of newsprint operations to neutral deinking and the relating of colloidal stickies to runnability provided mill scale evidence that generally agreed with this early testing.