To dry ink on plastic, the most recommended method is air drying.
According to the provided reference, air-dry inks are designed to dry simply by being exposed to air. This means you need to let the ink dry naturally over time. If you are working on a project with multiple layers or colors, you will have to allow each layer of ink to dry completely between applications.
Why Air Drying is Preferred
Unlike some other materials, plastic can be sensitive to heat. The reference specifically warns against using high heat sources such as flash units or conveyor dryers on plastic.
- Risk of Damage: Extreme heat can easily warp or melt plastic, potentially ruining your project.
- Safety: Air drying is a gentle process that poses no risk to the plastic material itself.
Therefore, for drying ink on plastic, air drying is the safe and effective approach, allowing the ink to cure naturally without the need for external heat.