The effect of press draw and basis weight on woodfree paper properties during high-solids surface sizing

Juha Lipponen*, Johan Grön

*Corresponding author for this work

Research output: Contribution to specialist publication typesArticleProfessional

5 Citations (Scopus)

Abstract

In high-solids surface sizing of up to 30% solids, less starch penetrates the sheet which means the sheet requires less drying. However, less penetration means the internal strength does not benefit from the starch as much as it does in conventional surface sizing. To compensate for this loss of internal strength, the Huygen internal strength of surface-sized paper can be increased by reducing the press draw from 3% down to 2% or lower. Starch penetration is further reduced, however, when the prese-to-dryer draw is decreased because the lower press draw decreases the porosity of the basesheet. Moreover, reducing the press draw to less than 2% decreases the elastic modulus of the fiber network reduces the bending sitffness of the sheet.

Original languageEnglish
Pages15-20
Number of pages6
Volume4
No.1
Specialist publicationTAPPI Journal
Publication statusPublished - 1 Jan 2005
MoE publication typeNot Eligible

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