Photocure Blu was developed as a PVA-SBQ photopolymer textile emulsion.  Photocure Blu is blue in color and it has a solids content of 41% with 4500 CPS for excellent print definition. Photocure Blu is easy to reclaim and a pot life sensitized of 1-year. Once Photocure Blu is coated its screen life is 6 month under yellow safelights at room temperature. 

Applications;

Photocure Blu was developed for use with textile printers. 

Data Facts:

Blue in color, this SBQ pure photopolymer emulsion offers 41% sensitized solids and 4500 CPS sensitized viscosity. Excellent for plastisol and water-based inks.  Once sensitized Photocure Blu emulsion should last 1-year. photocure Blu 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 80 to 110 as a guide set your exposure time between 45-55 seconds. On mesh counts of 200 to 300 allow 35 to 50 seconds exposure, and for mesh counts of 350 or more allow 25 to 30 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.