Various absorption properties of papers produced from pine and birch pulps

• Autorzy: Werner A.E. , Stanisławska A.J. , Świekatowski W.B.
• Języki publikacji: EN

Abstrakty

EN

The objective of this work was to investigate absorption properties with regard to the type of base paper. Papers of different hardwood to softwood fiber ratio were prepared and coated with K bars of a different wounded wire diameter, which assures various coatings thickness. Coated papers were dried under infrared heaters and stored in constant temperature and constant humidity room. Based on curves obtained during water penetration dynamics investigation, the absorption properties were determined. Cobb index was also measured. The lowest water absorption was found for the coatings applied on papers prepared from the softwood pulp. The increased content of hardwood fibers in the pulp was identified with the increase in the absorption properties. Moreover, it was found that - regardless of the basestock type - the increased coating thickness resulted in lower water absorption as well as in the decreased absorption rate. Cobb60 index measurements confirm the results obtained from the analysis of the penetration curves. Differences in absorption properties were attributed to various characteristics in the softwood and hardwood fibers.

Słowa kluczowe

EN

pulps; hardwood fibers; softwood fibers; fiber morphology; water penetration dynamics

PL

masa celulozowa; papier; włókno celulozowe; morfologia włókna

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 4
• Strony: 88--90
• Opis fizyczny: Bibliogr. 6 poz., rys., tab.

Twórcy

autor

Werner A.E.

autor

Stanisławska A.J.

autor

Świekatowski W.B.

• Technical University of Łódź, Institute of Papermaking and Printing, ul. Wólczańska 223, 93-005 Łódź,

Bibliografia

• (1) Stenius P., Pakarinen H.: (editors), Papermaking Science and Technology. Book 3: Forest Products Chemistry, joint work, Fapet Oy, Helsinki, Finland 2000.
• (2) Przybysz K.: Technologia celulozy i papieru cz. 2 - Technologia papieru, Wydawnictwa Szkolne i Pedagogiczne, Warszawa 1997.
• (3) ISO 5269-2:2004; Pulps - Preparation of laboratory sheets for physical testing - Part 2: Rapid-Köthen method.
• (4) Stanisławska A.: The coating thickness effect on the migration extent of hydrophilic binders in paper coatings, Przemysł Chemiczny 82, 8-9, 1174 2003.
• (5) Grüner G.: ,,Emtec Penetration-Dynamics Analyzer", materiały firmy Emtec Electronic GmbH, Lipsk 1996.
• (6) Baumeister M., Grüner G.: Wochenbl. Papierfabr., 127, 16, 1023 1999.