ISO/TS 21331:2020
Graphic technology and deinked pulp — Guidance for assessing the deinking performance of printed paper products
This document provides guidance for representatives of the paper value chain for the design of printed paper products, with a view to deinkability contributing to recyclability in support of the circular economy.
It describes relevant deinking processes, and the deinking performance of printed paper products produced with different printing, finishing and converting technologies in those deinking processes.
It provides a list of relevant quality characteristics of industrial deinked pulps and a list of their possible usages based on those characteristics.
This document does not include guidance for paper-based products which are not intended to be deinked.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Terms related to material
3.2 Terms relating to paper recycling and deinking
3.3 Terms relating to quality requirements
4 How deinkability contributes to recyclability in support of the circular economy
4.1 What is circular economy? The importance of recyclability
4.2 Specific recommendations for printing
4.3 Specifics recommendations for converting
5 Relevant deinking processes
5.1 General
5.2 Pulping
5.3 Flotation
5.4 Washing
5.5 Dispersing
5.6 Bleaching
6 Deinking performance
6.1 Principles for assessment of deinking performance of printed products
6.2 General experience
7 Quality characteristics of industrial deinked pulps
7.1 General
7.2 Pulp Brightness
7.3 Pulp Colour
7.4 Dirt Particles
8 Possible usages of industrial deinked pulps (based on Clause 7 characteristics)
9 Reporting
Annex A Deinking methods
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Terms related to material
3.2 Terms relating to paper recycling and deinking
3.3 Terms relating to quality requirements
4 How deinkability contributes to recyclability in support of the circular economy
4.1 What is circular economy? The importance of recyclability
4.2 Specific recommendations for printing
4.3 Specifics recommendations for converting
5 Relevant deinking processes
5.1 General
5.2 Pulping
5.3 Flotation
5.4 Washing
5.5 Dispersing
5.6 Bleaching
6 Deinking performance
6.1 Principles for assessment of deinking performance of printed products
6.2 General experience
7 Quality characteristics of industrial deinked pulps
7.1 General
7.2 Pulp Brightness
7.3 Pulp Colour
7.4 Dirt Particles
8 Possible usages of industrial deinked pulps (based on Clause 7 characteristics)
9 Reporting
Annex A Deinking methods
Bibliography