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Basic mechanisms of...
Basic mechanisms of fluting formation and retention in paper
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- Kulachenko, Artem (författare)
- KTH,Mittuniversitetet,Institutionen för teknik, fysik och matematik (-2008),Hållfasthetslära (Avd.)
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- Gradin, Per (författare)
- Mittuniversitetet,Institutionen för teknik, fysik och matematik (-2008),FSCN – Fibre Science and Communication Network
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- Uesaka, Tetsu (författare)
- Mittuniversitetet,Institutionen för naturvetenskap (-2008)
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(creator_code:org_t)
- Elsevier BV, 2007
- 2007
- Engelska.
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Ingår i: Mechanics of materials. - : Elsevier BV. - 0167-6636 .- 1872-7743. ; 39:7, s. 643-663
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Abstract
Ämnesord
Stäng
- Out-of-plane deformations of paper, such as fluting, significantly deteriorate the quality of a printed product. There are several explanations of fluting presented in the literature but there is no unanimously accepted theory regarding fluting formation and retention which is consistent with all field observations. This paper first reviews the existing theories and proposes a mechanism that might give an answer to most of the questions regarding fluting. The fluting formation has been considered as a post-buckling phenomenon which has been analysed with the help of the finite element method. Fluting retention has been modelled by introducing an ink layer over the paper surface with the ink stiffness estimated from experimental results. The impact of fast drying on fluting has been assessed numerically and experimentally. The result of the study suggests that fluting occurs due to small-scale hygro-strain variations, which in turn are caused by the moisture variations created during fast convection (through-air) drying. The result also showed that ink stiffening alone cannot explain the fluting amplitudes observed in practice, but that high drying temperatures promote inelastic (irreversible) deformations in paper and this may itself preserve fluting.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
Nyckelord
- Cockling
- Fibre orientation
- Fluting
- Moisture variations
- Engineering mechanics
- Teknisk mekanik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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