DRYING

		DRYING

THE SOLUTION TO YOUR WEB DRYING PROBLEM!

The ETTER Engineering proprietary High Velocity Air Drying Systems utilize an unique Twin Vortex design which provides excellent drying. These systems are designed for retrofit applications to upgrade existing presses and coaters along with being supplied as original equipment on new presses. ETTER specializes in custom designs to meet your specific application requirements. These Systems are ideal for both water and solvent based inks and coatings. Printing on Paper, Film and Foils can all be improved with higher line speeds and better quality with reduced maintenance.

MAINTENANCE reduced maintenance with non-clogging nozzles

CONVERSIONS ideal for solvent to water conversions

SPEED Increases of over 100% line speed achieved

OUR SYSTEMS CAPABILITIES INCLUDE:

Flexo & Gravure Presses
Infra Red Drying Capabilities

Stack, C.I. Presses
Web Widths from 6" to 150"

In Line Presses
Overhead Tunnel Dryers

Coaters
Multi-Station Coaters

CUSTOM DESIGN to YOUR specific needs!

THE DRYING PROBLEM:

In simplified terms, web drying involves removing a liquid carrier, either water or solvent, while retaining solids on the web. Unless external energy is applied, some of the evaporated carrier will re-convenes just above the web, forming a vapor boundary layer that is 100% saturated. This layer acts a wall inhibiting any further evaporation of the carrier. This tight boundary layer actually travels with the web at almost line speed, and remains difficult to penetrate.

THE DRYING SOLUTION:

To penetrate the boundary layer, high volume, high velocity turbulent air is utilized. Air velocity at the substrate surface should be in the turbulent range in order to maximize drying efficiency. The proprietary ETTER Web Scrubber Drying Nozzle utilizes an airflow pattern that is virtually parallel to the surface. This eliminates coating disturbances, and captures evaporating vapor prior to it re-condensing. While heating the air dramatically accelerates the vaporization process, proper exhaust design is just a crucial to remove the unwanted vapor.

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