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Deinking of HP Digital Commercial Prints: Effect of Chemicals and Their Loadings on Deinkability

Ng, Hou T.; Bhattacharyya, Manoj K.; Mittelstadt, Laurie S.; Hanson, Eric G.
HP Laboratories


Keyword(s): deinking, LEP, neutral chemistry, ethoxylated fatty alochol

Abstract: Here we show that the effect of chemicals and their specific loadings play a dominant role on the outcome of a deinking process. More specifically, we demonstrate that good deinkability of HP digital commercial prints (i.e. liquid-electrophotographic (LEP), dry-EP and inkjet (IJ) prints) can be achieved with our highly efficient neutral deinking chemistry (coded HPE6S4), which is based on readily available non-proprietary chemicals. We found a direct correlation of the chemical effects to the ink-particle speck contamination and its particle-size distribution. Our excellent results compared favorably to that obtained with the traditional deinking chemistry. Our approach can be readily scalable for adaption in the paper recycling mills.

4 Pages

External Posting Date: September 18, 2009 [Fulltext]. Approved for External Publication
Internal Posting Date: September 18, 2009 [Fulltext]

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