|
Title
Linear behaviour of one-side coated paper: Anisotropy
Authors
KLEMEN MOZINA STANISLAV PRACEK and VILI BUKOSEK
Received
July 27, 2012
Published
Volume 47 Issue 5-6 May-June
Keywords
anisotropy, sonic velocity, mechanical-physical properties, coated paper
Abstract
The research work presents the study results of anisotropy of one-side coated papers for the purpose of offset printing.
Through technological processes, e.g. paper production, finishing, coating, printing, paper becomes more
homogeneous, which shows an equal transformation of mechanical tension forces. The stated is in good agreement with
the measurements of paper anisotropy. The regularity is seen as the evenness of mechanical forces transmission
through technological stages, e.g. calendering, coating, winding, printing etc. The processes of paper finishing do not
influence paper anisotropy significantly; moreover, it remains preserved through the entire production and postproduction, or it even slightly lowers after offset printing, which means that the findings presented in this study can
help to better understand paper anisotropy before and after printing. Anisotropy and paper fibre connectivity in the
paper core structure were studied and verified by several research methods, i.e. sonic velocity, SEM, MIT, tearing
resistance etc, the results being in good relation with the theory of anisotropy in general.
Link
|
