Sökning: "neutral sulfite"

Hittade 4 uppsatser innehållade orden neutral sulfite.

  1. 1. Design of multilayer paperboard for optimisedcompression strength

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Ali Salem Ali; [2020]
    Nyckelord :Compression strength; Paper; Cardboard; Dynamique Formette; Dynamic sheet former; SCT; Shortspan compression test; fibre; fibre properties; fiber; fiber properties; Multilayer;

    Sammanfattning : This master thesis was issued by BillerudKorsnäs Gruvön. The focus of this thesis was theinvestigation of the effects different fibre types has on the compression strength of the whole paper product. This stems from wanting to better understand how to produce a better paperboard construction with respect to stacking, storage, and transport. LÄS MER

  3. 2. Design of multilayer paperboard for optimisedcompression strength

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Ali Salem Ali; [2020]
    Nyckelord :Compression strength; Paper; Cardboard; Dynamique Formette; Dynamic sheet former; SCT; Shortspan compression test; fibre; fibre properties; fiber; fiber properties; Multilayer;

    Sammanfattning : This master thesis was issued by BillerudKorsnäs Gruvön. The focus of this thesis was theinvestigation of the effects different fibre types has on the compression strength of the wholepaper product. This stems from wanting to better understand how to produce a better paperboardconstruction with respect to stacking, storage, and transport. LÄS MER

  4. 3. 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

  5. 4. Utbytets och malningens inverkan på NSSC-massans egenskaper

    Uppsats för yrkesexamina på avancerad nivå, Fakulteten för teknik- och naturvetenskap

    Författare :Markus Larsson; Johan Kullander; [2010]
    Nyckelord :NS; pulp; NSSC; yield; beating; refining; neutral sulfite; cooking; sulfite; strength; fluting; flute; well; carton; board; neutral; NS; massa; NSSC; utbyte; malning; raffinering; neutralsulfit; kokning; neutralsulfitkokning; styrka; fluting; wellpapp; kartong; sulfit; neutral;

    Sammanfattning : Neutralsulfitkokning av björk möjliggör ett högt utbyte av hemicellulosa, vilket bidrar positivt till flutingens egenskaper och minskar vedkostnaden. Neutralsulfitkoket ska avbrytas när delignifieringen nått tillräckligt långt för att veden ska kunna defibreras skonsamt med en rimlig energiinsats, men innan nedbrytningen av hemicellulosa hunnit accelerera. LÄS MER