Puff ink is a type of screen printing ink that is used to create a raised, three-dimensional effect on a printed surface.

It is also known as "puff paint" or "dimensional ink". Puff ink is a specialty ink that is used to add a unique texture and dimension to a printed design.

The ink contains a foam agent that expands when heat is applied during the curing process. As the foam agent expands, it pushes the ink up, creating a raised, puffy effect on the printed surface. The puff effect is most pronounced on areas of the design that are printed in a heavier deposit of ink.

Puff ink is often used to create an interesting texture on designs, such as lettering or logos on t-shirts, hats, bags and other garments. It is also used to create designs on promotional items such as keychains, buttons and other items. Puff ink is available in a wide range of colors and can be used in combination with other types of inks to create a variety of effects.

It is important to note that puff ink requires a higher curing temperature than other types of inks, and it is not recommended for certain fabrics such as nylon or polyester. It also may not be as durable as other types of inks and may crack or peel over time.