Recycled fibre
- Legislation
- Sources and quality of paper for recycling
- Recyclability of paper and board products – Deinkability
- Recycling versus recyclability
- Technical aspects of recycling
- Relevance of recyclability
- Repulpability and deinkability
- Deinkability test methods
- EPRC deinkability assessment
- Deinkability of different printed products
- Removability of adhesive applications
- EPRC assessment on removability of adhesive applications in graphic paper products
- Unit operations and equipment in recycled fibre processing
- Design of processes
- Design principles for stock preparation processes
- Process design for graphical grades, news print
- Process design for tissue
- Process design for board and packaging grades
- Reject and Sludge handling for graphical and tissue applications
- Reject and Sludge handling for board and packaging applications
- Water management
- Additives
- Deinking
- Bleaching of deinked pulp
- Process water treatment
- Sticky control – detackification
- Enzymatic solution for recycled fibres
- Papermaking potential of recycled fibre
- Differences between virgin and recycled fibre
- Repeated (manifold) recycling experiments
- Multiple papermaking with recycled fibres
- Modelling of fibre age distribution
- Special request of recycled fibre furnish in papermaking
- Effects of recycled fibre in papermaking
- Challenges of increased recycled fibre utilisation
Repulpability and deinkability For graphic paper products deinkability is in the focus of a recyclability test. Nevertheless, repulpability has to be ensured as a prerequisite for a deinking test. Graphic paper products typically have no problems with repulpability and the yield of the pulping process is not determined especially. In contrast, packaging paper products can
Authors & references
Author:
Dr.-Ing. Hans-Joachim Putz
Technische Universität Darmstadt
Fachgebiet Papierfabrikation und Mechanische Verfahrenstechnik (PMV)
References:
- EPRC: European Declaration on Paper Recyling 2016-2020, EPRC, Brussels, 2017. Release 27.06.2020: https://www.paperforrecycling.eu/publications/
- McCool, M.A. and LeBlanc, P.E.: Recycling and separation technology. New developments in wastepaper processing and use. TAPPI Pulping Conference, 1988
- Holik, H. and Heß, H.: Chapter 7: Unit Operations. p.351-472, in Holik, H. (editor): Handbook of Paper and Board. Volume 1, Wiley-VCH Verlag, Weinheim, 2nd Edition, 2013, ISBN 978-3-527-33184-0
- Moss, C.S.: Theory and reality for contaminant removal curves. Tappi Journal, 80 (1997) No. 4, p. 69-74
- Schulze, H.-J.: Zur Hydrodynamik der Flotations-Elementarvorgänge. Wochenbl. Papierfabr. 122 (1994) No. 5, p.160-168
- Faul, A.: Ungenügende Deinkbarkeit und ihre Konsequenzen. bvdm Treffpunkt Innovation, Berlin, 2018
- Putz, H.-J. and Faul, A.: Requirements on the recyclability of graphic paper products. IARIGAI Conference, Salzburg, 2010
- Holik, H.: Unit operations and equipment in recycled fiber processing. Chapter 5 of: Göttsching, L. and Pakarinen, H. (editors), Recycled Fiber and Deinking, Fapet Oy, 2000, ISBN 952-5216-07-1
- Hornfeck, K., Liphard, M. and Schreck, B.: Grenzflächenuntersuchungen und anwendungstechnische Prüfungen zur Druckfarben- und Füllstoff-Flotation. Wochenbl. Papierfabr. 118 (1990) No. 21, p. 935-941
- Hakola, E.: Principles of conventional printing. Chapter 2 of: Oittinen, P., Saarelma H. (editors), Print Media – Principles, Processes and Quality, Paperi ja Puu Oy, 2009, ISBN 978-952-5216-33-2
- N. N.: Ink-Report. Gebr. Schmidt Druckfarben, Frankfurt a. M., Germany, 1995, 59 pp
- Schröter, K.-D.: Deinken – Gegenwärtige Tendenzen bei der Druckfarbenentwicklung unter besonderer Berücksichtigung wasserbasierender Farben. Wochenblatt f. Papierfabrikation 119 (1991) No. 1, p. 8-??
- Cosma, G.: Über die Druckfarben. Wir haben uns daran gewöhnt, daß unsere Welt bunt ist. Verpackungs-Rundschau 36 (1985) No. 2, p. 99-?? /13
- Kübler, R.: Druckfarben, ihre Zusammensetzung und ihre Trocknungsarten. Allg. Papierrundschau 33 (1984) No. 14, p. 383-390’ /14
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This page has been updated 17.11.2021