6533b871fe1ef96bd12d0ea8
RESEARCH PRODUCT
The Effect of Intense Air Drying on Material Distribution and Quality in Coated Papers
Heikki HäkkänenCarl-gustav BergPasi RajalaRichard Solinsubject
ConvectionMaterials scienceStarchGeneral Chemical Engineeringeducationengineering.materialchemistry.chemical_compoundchemistryCoatingAir temperatureengineeringMaterial distributionAir dryingPhysical and Theoretical ChemistryComposite materialWater contentAir dryerdescription
Abstract The aim of this study was to find out what will happen to paper coating quality and material gradients if coating is dried in one air dryer at a high convection rate (150 kg/m2h). Different printing papers were coated, calendered and printed with pilot machines. The binder and pigment gradients of the coated, and also printed, samples were analyzed with LIPS (Laser Induced Plasma Spectrometry). It was found that drying affects the migration of starch, but not latex. Total air drying can be used to dry printing papers, if air temperature, velocity and moisture content can be separately controlled. The control of web temperature is more important for paper quality formation in a coater drying section than that of evaporation rate.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-12-31 | Drying Technology |