Improving the wet web strength and runnability

E Retulainen, K Salminen, Hanna Lindqvist, A Oksanen, Anna Sundberg

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    1 Citeringar (Scopus)

    Sammanfattning

    This paper presents recent runnability research carried out at laboratory and pilot scale. Factors affecting adhesion, tensile strength, tension and residual tension after relaxation of wet web were studied. Adhesion of the web to surfaces was found to be not only furnish specific but also dependent on the temperature, dry solids content, chemical properties and contamination of the surface. Wet web strength has been shown to be a property even more sensitive to papermaking variables than the dry strength. In addition to fibre and fines properties, several chemical additives have also been found to improve the wet web strength. Surfactant was also found to have a considerable positive effect on wet web due to increased dry solids content after wet pressing. Increased tension holding capability was found to require improvements in fibre network structure.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)255–261
    Antal sidor7
    TidskriftAppita Journal
    Volym65
    Utgåva3
    StatusPublicerad - 2012
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • adhesion
    • runnability
    • strength
    • web breaks
    • Wet web

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