Process design for tissue Tissue paper differs in application and composition, grades are, e.g., toilet paper, towels, napkin and facial tissue. Depending on the application and the raw material composition, there are different demands on the final product and therefore on the production process. The stock preparation system design depends on the raw material composition,
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Process design for tissue
After reading this article you will..
- know the requirements of a stock preparation system.
- know how the very high quality requirements for market deinked pulp can be met.
- be able to discuss the task of flotation.
- know in which process stages macro stickies are removed.
- be able to identify situations where agglomeration of macro stickies can occur.
- know the main goals in producing tissue paper from RCF pulp.
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
Authors:
Falk Albrecht, Sebastian Schuster, Fanny Bader, Eckhard Gutsmuths
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This page has been updated 17.11.2021
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