DRYWEB:This is a large spreadsheet which accurately predicts the temperatures and solvent levels throughout the constant and falling rate periods, including the initial transients. It handles mixed solvents and also infra-red heaters. One or two experimental runs are enough to determine the adjustable constants. Thirty-eight solvents including water are now in the database. Macros make it easy to change solvents, move the ir section in or out, change the number of dryer zones, switch between SI and English units, and switch between air pressures and velocities
DRYWEBPS and DRYWEBPU :These are modified versions of DRYWEB for coatings on porous webs. One version assumes the coating completely penetrates the web; the other that the coating is completely on top of the web. One or the other should model any coating on a porous web.
DRYWEBTW:This is a modified version of DRYWEB for coatings on thick webs, where the temperature can no longer be assumed uniform across the web in any one section.
CRDRY:This is a small spreadsheet for aqueous systems. It accurately predicts the location of the end of the constant rate period. This is a useful control point, as in aqueous systems most of the drying is in the constant rate period. CRDRY also gives web temperatures and solvent levels at the end of each constant rate zone.
This is similar to CRDRY but can handle infra-red heaters
ROLLSPC and RUNSUM generate all desired SPC charts and statistics. For info please go to www.pjassociates.com
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Last Update: 7/18/08