Laboratory studies of paper calendering using a pendulum device
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The present thesis refers experimental and theoretical studies of the calendering process making use of the pendulum device as a means to simulate the roller calendering. The main task has been to clarify characteristic feature of the device in its capacity to simulate the calendering process with rollers. Measurements are made to enlighten the dependency of the paper characteristics gloss, smoothness and density by the running conditions as nip load, dwell time, roller temperature and moisture content of the paper. Furthermore, the deformation of the fibres and the thermal conduction in the paper during the compression are studied. Finally, an experimental and analytical study of the heat transfer between the hammer and the paper specimen is made. The results are compared with results from roller calenders in the extent they are available in the literature.
Has partsLamvik, Magne; Hestmo, Rune Harald; Mikkelsen, Erling. Model experiments of caldndering with a pendulum device. Nordic Pulp and Paper Research Journal. 15(2): 133-144, 2000.
Hestmo, Rune Harald; Gregersen, Øyvind Weiby; Lamvik, Magne. Calendering of wood containing paper. Nordic Pulp and Paper Research Journal. 17(1): 9-13, 2002.
Hestmo, Rune Harald; Lamvik, Magne. Determination of thermal conductivity of newprint under compression. .
Hestmo, Rune Harald; Lamvik, Magne. Heat transfer during calendering. Journal of Pulp and Paper Science. 28(4): 128-135, 2002.