Search for dissertations about: "converting paper"
Showing result 1 - 5 of 62 swedish dissertations containing the words converting paper.
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1. Baggy paper webs : Effect of uneven moisture and grammage profiles in different process steps
Abstract : One of the problems encountered in paper converting is caused by the occurrence of "baggy webs", which essentially is when the tension profile of the paper web is uneven. In an area with low tension the paper is longer, which results in bagginess. READ MORE
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2. In-Plane Fracture of Paper
Abstract : The in-plane failure of paper is studied in this work by means of a cohesive crack model from experimental as well as theoretical perspectives. Localized damage at in-plane tension of short paper strips is studied for low strain rates. READ MORE
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3. Continuum modeling of paperboard for the mechanical response of converting processes
Abstract : Paperboard is a thin and lightweight material made of cellulose fibers and it is an important component in packaging material where it provides stiffness and rigidity. The scope of this work is the development of continuum models, and its numerical treatments, for simulating the processes of converting paperboard into packages. READ MORE
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4. Continuum modelling of the mechanical response of paper-based materials
Abstract : Continuum based elasto-plastic-damage models for paperboard have been established in this work. The thesis begins with an introductory section that describes the mechanical properties of paperboard and some of the converting processes during forming of a package. READ MORE
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5. Extended impregnation kraft cooking of softwood : Effects on reject, yield, pulping uniformity, and physical properties
Abstract : Converting wood into paper is a complex process involving many different stages, one of which is pulping. Pulping involves liberating the wood fibres from each other, which can be done either chemically or mechanically. READ MORE