C-70 Process Colors are low-odor, fast drying, multi-purpose, high gloss ink with excellent outdoor durability and adhesion to a variety of paper and plastic substrates. This series is available in gallons only. 

Substrates;

C-70 Process Colors may be screen printed onto pressure-sensitive vinyl, rigid styrene, polycarbonate, surface-treated polyester, acrylic, most coated paper/board and some fiberglass surfaces.  If ST-355 Adhesion Promoter is added, C-70 Process Colors may also be printed on fluted polypropylene sheet such as Coroplast, Hycor, Cor-X, or other, similar substrates. C-70 is recommended for printing POP displays, vacuum-formed products, bookcovers, membrane faceplates, advertising specialites, novelties, and many other display and packaging applications. Note; On fluted polypropylene C-70 loses abrasion resistance and adhesion when exposed to water.  After drying off, these properties are restored.  Do not use C-70 on fluted polypropylene when wet abrasion-resistance and adhesion is required, such as for rain-wet exterior signs which may be abraded during handling.  Note; Although multiple-layers of C-70 may be successfully superimposed, flexibility will gradually decrease as total ink deposit increases.  If exceptional flexibility is required a more flexible ink such as C-99 Gloss Vinyl or C-37 Flexiform, may be more suitable.  Both of these inks are available by contacting us at sales@screenworkssupply.com.

Drying;

C-70 Process Colors are fast drying with excellent screen stability and is therefore especially suitable for use on high-speed screen printing equipment such as cylinder presses, or reel-to reel label presses.  Single layer prints of C-70 can dry in as little as 10-15 seconds at 140 F through a jet dryer.  As with all solvent-based inks, subsequent ink layers may require longer drying time. 

Process Colors;

All process colors match the SWOP standards. Color density may be adjusted by adding C-70-S139 Process Base.

Modification;

For best results C-70 Process Colors may be reduced with approximately 10-20% by weight of ST-212 Reducer. For exceptional fine detail printing, or under adverse ambient conditions, either ST-303 Retarder or GEL-100 Gelled Retarder may be substituted for all or part of the reducer. The restricted flow of GEL-100 allows better print defination, particulary for reverse detail or 4-color process printing. Note: The use of ST-303 Reducer or GEL-100 Gelled Retarder may decrease drying speed; ensure that drying is adequate before commencing a full production run.