FORMATION AND CONSOLIDATION OF A COATING LAYER AND THE EFFECT ON OFFSET-PRINT MOTTLE

Authors
Citation
G. Engstrom, FORMATION AND CONSOLIDATION OF A COATING LAYER AND THE EFFECT ON OFFSET-PRINT MOTTLE, Tappi journal, 77(4), 1994, pp. 160-172
Citations number
63
Categorie Soggetti
Materials Science, Paper & Wood
Journal title
ISSN journal
07341415
Volume
77
Issue
4
Year of publication
1994
Pages
160 - 172
Database
ISI
SICI code
0734-1415(1994)77:4<160:FACOAC>2.0.ZU;2-Z
Abstract
The literature on the formation and consolidation of a coating layer i s reviewed, with emphasis on the occurrence of mottle in offset printi ng of coated paper. The review first defines and examines the press-re lated causes of mottle. The stain tests used to predict offset mottle are described along with their limitations. The main portion of the re view is devoted to paper-related causes of mottle. The interaction bet ween the coating color and the base paper during coating formation and consolidation is a focal point of discussion. Special attention is pa id to factors influencing the distributions in mass, porosity, and bin der content of the coating layer and their relation to mottle in the o ffset print. The role of calendering is also examined.