Influence of sheet dimensions on curl of paper
1998 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 24, no 1, 18-25 p.Article in journal (Refereed) Published
Out-of-plane hygroinstability (curl) of cross-plied square paper sheets made from bleached chemical pulp has been studied analytically and experimentally. Theoretically, it is shown that nonlinear kinematics and bifurcation response must be accounted for in the analysis of curl in paper. Furthermore, a dimensionless formulation of the governing plate equations for the curl curvatures revealed that a single dimensionless loading parameter controls the curl characteristics. Cross-ply sheets of various dimensions were manufactured from bleached chemical pulp to experimentally examine the curvatures and verify analytical results. Measured changes in curvatures were compared with predictions from linear and nonlinear laminate theory and nonlinear finite element analysis. Good overall agreement was observed between analytical and numerical results and between measured and calculated curvature changes.
Place, publisher, year, edition, pages
1998. Vol. 24, no 1, 18-25 p.
finite element analysis, curl, paper sheets, dimensions, equations, forecasts, humidity, basis weight, dimensional stability
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-25486ISI: 000071650700004OAI: oai:DiVA.org:kth-25486DiVA: diva2:358753
QC 201010252010-10-252010-10-252010-10-25Bibliographically approved