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
Carry-over and wet-end chemistry Carry-over means the transfer of dissolved and/or colloidal organic and inorganic material, originating from virgin fibre production or from chemicals added during the previous paper manufacturing, printing or converting or coming from contaminations in the delivered paper for recycling grades or added as chemicals during the current paper for recycling treatment
Authors & references
Author:
Hans Putz
References:
- Lucas, R. and Williams, T., Winding problems associated with recycled fibres and additives in today’s papers. Tappi Finishing & Converting Conference, TAPPI PRESS, Atlanta, 1997
- Fernandez, C. and Garnier, G., Retention of Fatty Acid Soaps During Recycling. Part I: A Study Using Packed Beds of Pulp Fibres. J. Pulp Paper Sci. 23(1997) No. 4, p. J144J152
- Larson, A., Stenius, P. and Odberg, L., Surface Chemistry in Flotation Deinking. Part II. Svensk Papperstidn. 87(1985) No. 18, p. J165J169
- Haynes, D. and Marcoux, H., Evaluation of fatty acid carryover in North American newsprint deinking mills. CPPA 4th Research Forum on Recycling, Quebec, 1997
- Holmbäck, Å., Analys av fettsyratvålar och vedharts i en returpappersanläggning. M.Sc. Thesis, Åbo Akademi, Faculty of Chem. Eng., Turku, Finland, 1995
- Krüger, E., Göttsching, L. and Mönch, D., Verhalten fixierter Störstoffe im Recyclingprozeß. Wochenbl. Papierfabr. 125(1997) No. 20, p. 986991
- Sjöström, L. and Ödberg, L., Influence of Wet-End Chemicals on the Recyclability of Paper. Das Papier 51(1997) No. 6A, p. V69V73
- Grau, U., Schuhmacher, R. and Kleemann, S., Einfluß des Recyclings auf die Wirksamkeit von Trockenverfestigern. Wochenbl. Papierfabr. 124(1996) No. 17, p. 729735
- Ackermann, C. and Putz, H.-J., Unpublished INGEDE Project. Darmstadt, Germany, 1997
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This page has been updated 16.11.2021