Sökning: "pappersegenskaper"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet pappersegenskaper.

  1. 1. Incorporation of Plasticizers through Refining into Wood Pulp : A Potential Route For Bio-based Thermoplastic Materials

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Victor Eric Pierre Chartrain; [2023]
    Nyckelord :Cellulose; Paper; Plasticizer; Mechanical Refining; Cellulosa; Papper; Mjukgörare; mekanisk bearbetning;

    Sammanfattning : Fibers are interesting materials alternative to replace conventional fossil-based plastics, as they are bio-based and do not lead to CO2 emissions. Due to their limited ductility, it is difficult to use them to make complex three-dimensional shapes. LÄS MER

  3. 2. Kartläggning av färgbehov beroende av pappersstruktur

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Clara Åkerström; [2021]
    Nyckelord :färgbehov; infärgning; tryckdensitet; tryckteknik;

    Sammanfattning : I examensarbetet gjordes en kartläggning av färgbehov beroende av pappersstruktur. Arbetet gjordes för Holmen Paper. Syftet med arbetet var att undersöka olika parametrar på pappersstrukturer och se hur färgbehovet påverkades. Det gjordes genom en experimentell undersökning och utredning i labskala. LÄS MER

  4. 3. Development of a Profile Sample Cutter

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Maryam Tarik Hamad; [2020]
    Nyckelord :Blade geometry; vertical constraint; paper properties; paper slitting; Knivbladsgeometri; vertikal begränsning; pappersegenskaper; pappersskärning;

    Sammanfattning : The pulp- and paper industry is a key industry globally and stands for a production of 600 million tonnes pulp and paper worldwide with a total revenue of 400 billion dollars. Due to high quality requirements on paper, it is important to use instruments that control that the produced paper fulfill the promised requirements. LÄS MER

  5. 4. Predictions of Pulp and Paper Properties Based on Fiber Morphology

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Sara Sundblad; [2015]
    Nyckelord :Pulp Refining; Tensile Index; Zero-span tensile index; Fiber Morphology; Linear Regression;

    Sammanfattning : The aim is to investigate models that predicts the potential of pulp and evaluate the relevance of the zero-span tensile index within these. Two chemical pulps made from softwood and eucalyptus were refined in a Voith-beater with different energy input in order to study the change of fiber morphology signals and other pulp and paper properties. LÄS MER

  7. 5. The influence of pH on fiber and paper properties : Different pH levels during beating and sheet forming

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper

    Författare :Jennie Jansson; [2015]
    Nyckelord :pH; beating; WRV; fiber charge;

    Sammanfattning : The effect of pH on fiber and paper properties, during beating and sheet formation, was investigated for three different pulps. The pulps were pH adjusted to four different pH levels between 3 and 9. Isotropic laboratory sheet were made of both unbeaten and beaten pulps. LÄS MER