A violet diazo cure photoemulsion for plastisol and water-based inks. DZ 343 can withstand thousands of prints without the use of chemical hardeners and still reclaim easily. At 44% solids, 200+ micron stencils are easily achieved. DZ 343’s combination of faster exposure speeds, medium viscosity and high durability gives printers even greater versatility and value. Freeze/thaw stable. 

Applications;

DZ-343 was developed for use with textile using plastisol ink and it is also compatible with water-based inks. 

Data Facts:

Violet in color, this diazo emulsion offers 44% sensitized solids and 7500 CPS sensitized viscosity. Excellent for plastisol, and some water resistance.  DZ-343 does need to be sensitized and should last up to 4 to 6 weeks. DZ-343 will work well with mesh counts above 74 or higher.

Exposure Time Reference:

When using a 5-KW Metal Halide Exposure lamp on mesh counts from 74 to 305 as a guide set your exposure time between 90-120 seconds.  On mesh counts of 125 to 230 allow 90 to 60 seconds exposure, and for mesh counts of 300 or more allow 15 to 25 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.