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Deinking of Recovered Paper Mixtures Containing Digital Prints - Challenges and Prospects

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Deinkability of a print product is evaluated today typically according to the ERPC “Assessment of Print Product Recyclability – Deinkability Score”. For the manufacturer of print products it is relevant and useful to know the deinkability behavior of “his” single product. But paper mills never have to deink one specific print product; they have to handle a recovered paper mixture. This mixture consists of the large volumes of products printed mainly in offset and rotogravure on various paper grades. Nowadays increasing amounts of digital prints from private households and offices are parts of the recovered paper mix.

Operation conditions of a paper mill have to be oriented on the deinking result of the recovered paper mix. Therefore, the paper demonstrates the impact of various digital prints (inkjet, dry and liquid toner) as a portion of the recovered paper mixture showing its behavior during deinking. Different mixtures of digital prints in recovered paper are investigated by flotation deinking under variation of deinking chemistry and bleaching conditions. The effects on optical characteristics of the deinked pulp as well as on process parameters are shown.
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Document Type: Research Article

Publication date: 2012-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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