Deinking of Recovered Paper Mixtures Containing Digital Prints - Challenges and Prospects
Abstract: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.
Document Type: Research Article
Publication date: 2012-01-01
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
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