BT Ink Series Pad / Screen Print Ink – High Density Ink for Printing on Clear Plastic
BT Series ink is a high gloss, easy to process, all purpose 1- or 2-component pad printing ink. It is an "all-around" plastic ink that adheres to a wide range of products and only comes in High Density and Harmony mixing system colors. Excellent for both pad and screen printing, BT Series ink is ideal for substrates where opacity and gloss are a premium. It is perfectly suited for printing on clear plastic and other transparent substrates. As a 2-component ink has an exceptional abrasion resistance and an extended pot life of 8-9 hours. Like all Sapphire inks, BA series is Proposition 65 compliant, which is required in the state of California.
Hardeners: BT Series inks cures by air drying and cross-linking (when using hardener). Add 1000H Hardener at a ratio of one part hardener to ten parts inks (10:1) by weight. When catalyzed, BT Series ink has an 8/9 hour working pot life.
Thinner: Pad Printing - The Ink mixture should be thinned to printing viscosity with 15% - 20% Type BT-M (faster) or Type EB (slower) by weight. Adding thinner will make the ink less viscous and dry slower.
Screen printing - The Ink mixture should be thinned to printing viscosity with 8% - 15% Type EB Thinner by weight. Adding thinner will make the ink less viscous and dry slower.
Drying: BT Series inks cure by air drying and chemical cross-linking (when using hardener). It will be ready for overprinting immediately and will be dust dry in 30 seconds at room temperatures. Complete cross-linking (full cure) of the inks is realized in 6-8 days at room temperatures. Dust dry and full cure conditions can be significantly accelerated by the application of heat.
Retarder: For fine prints, Type SP-5 retarder in proportions not to exceed 50% by weight of thinner. Adding excess retarder may inhibit ink transfer from pad to substrate.