Saati DW diazo emulsion was designed for textile printers. Violet in color and resistant to plastisol and water-based inks, it will maintain excellent print definition on any mesh. Saati DW offers 41% solids, medium viscosity, and it also offers easy reclaiming.  When used with water-base inks Saatichem Fixer 9 should be applied evenly to both sides of the dry stencil for permanent water-proof stencils.

Applications:

Saati DW diazo emulsion was designed for plastisol inks, and water-based inks when Saatichem Fixer 9 is applied.

Data Facts:

Violet in color, this diazo emulsion offers 41% sensitized solids, offering medium viscosity. Excellent for all type of plastisol applications. Saati DW emulsion should last 12 months. Saati DW will work well with mesh counts above 74 or higher.

Exposure Time Reference:

When using a 3KW Metal Halide Exposure lamp on mesh counts from 80 to 300 as a guide set your exposure time between 160-200 seconds.  On mesh counts of 300 to 350 allow 50 to 60 seconds exposure, and for mesh counts of 350 or more allow 30 to 45 seconds for exposure. Remenber, these exposure settings should only be used as a guide since exposure time will vary depending on equipment used, lamp life, type of emulsion, and applied coatings.

Coating Sequence:

It is not recommended to finish the last coating on the print side of the screen.  Finish the last coating on the squeege side. If the coating ends on the print side, the E.O.M. thickness will decrease and go thinner on the print side.  This will cause premature stencil breakdown and poor ink deposit.

Resolution and Hardness:

Some printers do underexpose the screen to have details of images resolved on the screen.  Unless the number of printing impressions is very low, underexposed screens with poor hardness will cause many problems in the printing process, such as premature breakdown, more fish eyes, and pinholes, locking up emulsions with inks, ink cleaners, or other chemicals.  It is important therefore, to locate and standardize a proper exposure time and a good hardness scale by mesh count and coating profiles.