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Visar resultat 1 - 5 av 40 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Rate-dependent effects on the mechanical behaviour of paper

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Satyasarathi Poddar; [2023]
    Nyckelord :;

    Sammanfattning : It is established that paper properties depend on the loading rate. The rule of thumb is that the in-plane strength and stiffness increases about 10\%, when the strain rate increases by a factor of 10. Converting of paperboard into packages requires creasing of the paperboard followed by folding to make 3 dimensional packages. LÄS MER

  3. 2. The “threat from abroad” and the breaking of the Swedish “cordon sanitaire” : A critical discourse analysis of right-wing party-political, online communication in Sweden

    Master-uppsats, Uppsala universitet/Medier och kommunikation

    Författare :Hugo Ekström; [2022]
    Nyckelord :Radical right populism; immigration; criminality; political communication; Facebook; normalization; discursive shifts; moral panic; imaginaries; borderline discourse;

    Sammanfattning : In the last decade, we have witnessed a new stage in the mainstreaming and normalization pro­cess of populist radical right policies and ideas in the Western world. This has resulted in in­creasing politicization of issues related to immigration. LÄS MER

  4. 3. Mapping of Material & Conversion Parameters of Packaging Production – Boardio®

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Yusuf Qasem; Younes Chraibi Ottosson; [2022]
    Nyckelord :Chemical Engineering; Packaging; Packaging Production; Paperboard; Converting; Lamination; Extrusion; Die-cutting; X-ray tomography; GPI; Creasing; Perforation; Tensile Strength; Technology and Engineering;

    Sammanfattning : With an increased demand for sustainable packaging solutions for the ever-growing FMCG market, fiber-based systems rise as an answer to phasing out plastics in packages and reducing the humanity’s climate footprint. However, constructing a packaging solution largely consisting of paperboard comes with its challenges, such as integrating functionalities in the anisotropic paperboard that formerly were provided by a fundamentally different materials with divergent mechanical properties, being isotropic polymers. LÄS MER

  5. 4. Fuktbetingade rörelser i tak : Veckbildning i tätskikt på tak av trä

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Alexander Persson; Hugo Vikdahl; [2021]
    Nyckelord :moisture; wood; roof; roof decking; roofing membrane; bitumen; folds; creases; drying; dampening; moisture movements; moisture ratio; tongued and grooved board; roof plywood; plywood; fukt; trä; tak; underlagstak; tätskikt; tätskiktsmatta; bitumen; veck; veckbildning; uttorkning; uppfuktning; fuktrörelser; fuktkvot; råspont; råspontlucka; takplywood; plywood;

    Sammanfattning : Veckbildning i bitumenbaserade tätskiktmattor är ett problem som är känt i branschen. Problemet uppstår oftast på underlagstak av trä som är byggda under årets fuktigaste period, oktober-november, och vecken börjar då att bildas i slutet av våren i takt med den ökande solinstrålningen. LÄS MER

  7. 5. Continuum damage modeling of delamination in paperboard

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Författare :Erik Jakobsson; [2021]
    Nyckelord :Creasing; Folding; MD-direction; EB material model; LS-Dyna; eGISSMO; Technology and Engineering;

    Sammanfattning : This work concerns the creasing and folding of a continuum paperboard material model developed by Eric Borgqvist. Creasing is an operation that induces permanent deformation in the material, undertaken for the folding to be performed along a straight fold line without any in-plane cracks. LÄS MER