How are scratch-off lottery tickets made?
The material on scratch cards and lottery tickets is a latex ink. This ink is applied to printed material. A non-porous surface like enamel paper is used. The paper must then be coated with a release coating of varnish. After a release coating has be applied the scratch off material is then applied. Different processes take from 1 to 11 coats depending upon desired design, colors, and opacity for security. This material can be applied with an offset printing press, flexo, or using a silk screen process. One of the largest provider of scratch off cards in the world is ImpactWorldwide.com.