Material testing and product properties
- Why test pulp and paper?
- Fibre properties
- Papermaking properties of pulp
- Fluff pulps
- Chemical analysis of pulps
- General physical properties of paper and board
- Optical properties of paper
- End-use properties of printing papers
- End-use properties of packaging papers and boards
- Tissue papers
- Permanent papers
- Reliability of results in physical testing of pulp and paper
- Quality control at the mill
- Standardisation in pulp and paper testing
Preparation of laboratory sheets In a laboratory sheet former according to ISO 5269-1 standard, a very diluted pulp suspension drains slowly on a wire screen. In the conventional method, the pressure difference causing the draining is about 8.0 kPa and is achieved by using 80-cm long suction height. The sheets are couched from the wire
Authors & references
Edited by:
Petteri Maijanen, ABB
Original author:
Eero Hiltunen
Based on: Hiltunen, E. Papermaking properties of pulp (Chapter 3). In: Levlin, J-E. & Sjöderhelm, L. (ed), Pulp and paper testing (Book 17), Papermaking Science and Technology. Jyväskylä. 1999. Fapet Oy. pp. 39–68.
References:
- Aaltonen, P., Testing of Pulp and Paper, Part 1, Laboratory of Paper Technology, Helsinki University of Technology, Espoo, 1993, p. 1.
- Töppel, O., in Prufüng von Papier, Pappe, Zellstoff und Holzstoff. Band 3 (W. Franke, Ed.), Springer-Verlag, Berlin, 1993, Chap. 1 (in German).
- Aaltonen, P., in Paperin valmistus, osa 1 (A. Arjas. Ed.) 2nd edn., SPY/TTA, Helsinki, 1983, pp. 121 (in Finnish).
- Trepanier, R. J., “Dynamic forming. Parameters for making oriented sheets in the laboratory”, 74th Annual Meeting, Technical section, CPPA, Montreal, 1988, Preprints “A”, p. A53.
- Chang, N. L., “Dynamic compression of handsheets”, 1978 TAPPI Engineering Conference Proceedings, TAPPI PRESS, Atlanta, Book 1, p. 93.
- Karrila, S., Salmi, J., Paulapuro, H., “A novel device for wet pressing studies: the KSP produces a fast laboratory nip”, 48th Appita Annual General Conference, Appita, Victoria, 1994, p. 447.
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This page has been updated 28.04.2021