Improving the extensibility of thermoformable web structures with polymer dispersions

Jarmo Kouko (Corresponding author), Harri Setälä, Jarmo Ropponen, Elias Retulainen

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific


    Paper-based packaging materials as renewable materials ha packaging. The objective of this study was to produce a thermoformable network composed of cellulosic fibers and bio-based thermoplastic polymers with high formability. Bleached softwood kraft pulp was mechanically treated in two stages using high and low consistency refining sequentially. Chemical treatment using oxyalkylation method was applied to modify the fiber material, especially the fiber surface and its compatibility with polymer dispersions. This study presents laboratory scale manufacturing methods for compositions that improved the extensibility of paper. The extensibility of the paper was measured with a novel experimental method that simulated the process conditions in thermoforming. The results showed that by choosing the pulp treatment method, the chemical composition and the thermoforming of the paper is not a direct function of the extensibility of the applied polymer.
    Original languageEnglish
    Title of host publicationProgress in Paper Physics Seminar 2016
    Subtitle of host publicationConference proceedings
    Publication statusPublished - 2016
    EventProgress in Paper Physics Seminar, PPPS 2016 - Darmstadt, Germany
    Duration: 22 Aug 201626 Aug 2016


    ConferenceProgress in Paper Physics Seminar, PPPS 2016
    Abbreviated titlePPPS 2016


    • biopolymers
    • consumer packages
    • deep draw
    • extensibility
    • paper board
    • thermoformability


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