Sökning: "z-strength"

Hittade 3 uppsatser innehållade ordet z-strength.

  1. 1. Investigating the process parameters that influence the z-strength of liquid paperboard using data mining and machine learning

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

    Författare :Gustav Thaung Tolförs; [2021]
    Nyckelord :paperboard; liquid paperboard; z-strength; process parameters; machine learning; data mining;

    Sammanfattning : Parameters affecting the z-strength of liquid paperboard (LPB) has been analyzed and identifiedusing data mining and machine learning on 6 years of operational data from a multi-ply LPB mill, and control and stabilizing of them was proposed. Linear regression models were built for 9 articles with satisfactory results, and whose attributes were further analyzed as the most important parameters for the z-strength. LÄS MER

  3. 2. Impact of hardwood black liquor addition on the chemical and physical properties of kraftliner - a lab study

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Industriell miljö- och processteknik

    Författare :Fredrika Sundvall; [2017]
    Nyckelord :Hardwood black liquor; Xylan; Kraft pulping; Black liquor.;

    Sammanfattning : Kraft pulping, also known as sulphate pulping is a complex process where the wood components are liberated from each other facilitated by chemical reactions. During the pulping process some dissolved and degraded compounds end up together with the spent cooking chemicals in the black liquor. LÄS MER

  4. 3. The effect of different recovered fibres on mechanical properties of board

    Master-uppsats, Karlstads universitet/Avdelningen för kemiteknik

    Författare :Syed Ali Hassnain Shah; [2012]
    Nyckelord :Z-strength; mechanical properties; bending stiffness; couching method; recovered fibres; 4-ply board;

    Sammanfattning : The objective of this work was to determine the influence of recovered fibres on the mechanical properties of board. Industrial board was provided by Fiskeby Board AB and laboratory board was made by using an isotropic sheet former. Board properties such as tensile strength, tensile stiffness, z-strength and bending stiffness were evaluated. LÄS MER