Special request on recycled fibre furnish in papermaking Depending on the paper for recycling grade, recycled pulp is often a heterogeneous material. Besides fibres from different types of wood and from different pulping and bleaching processes as well as different types of fillers and pigments, paper for recycling also contains components that enter the recycling
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Special request of recycled fibre furnish in papermaking
After reading this article you will..
- know that materials (contaminants) in paper for recycling pulp make the big difference in using recycled fibres instead of virgin fibres.
Content
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
Authors & references
Author:
Hans Putz
References:
- EN 643:2014-11, Papier, Karton und Pappe – Europäische Liste der Altpapier-Standardsorten. Beuth Verlag, Berlin, 2014
Videos
Exercises
This page has been updated 16.11.2021
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