Engraved rolls

Different roll coating methods and roll arrangements S = steel roll, R = rubber-covered roll, E = engraved roll. (Courtesy of Faustel Corporation.)... 

Engraved roll Provides accurate control over coating uniformity best for extremely low adhesive weights... 

Topical application Kiss-roll Loop transfer system Engraved roll Nip padding system Spray system Foam application... 

Engraved roll applicator. Reproduced from Textile Finishing,... 

REZTHANE 1980 is an aqueous polyurethane emulsion designed for pad, reverse roll or engraved roll application. 

This viscous carpet is then usually polished and cooled in a cooling and polishing roll stack by three or more cooled rolls (Figs. 2.8 and 2.9). Instead of smooth rolls with polished surfaces, engraved rolls can be used to... 

Figure 50 Different types of rolls surfaces, engraved rolls.

A major part of film, sheet, coating, pipe, profile, etc. lines involve windup rolls. They include winders, dancer rolls, lip rolls, spreader rolls, textured rolls, engraved rolls, and cooling rolls. All have the common feature that they are required to be extremely precise in all their operations and measurements. Their surface conditions include commercial grade mirror finishes, precision bearings and journals are used, and, most important, controlled variable rotating speed controls to ensure uniform product tension control. 

The engraved roll surface uses many small cells to transfer the inks to the substrate. The inks are loaded into the cells from the ink reservoir and then metered by a doctor blade. They are transferred onto the substrate and finally merged to create a continuous wet film on the substrate. 

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