Sublistop

Or also called Block out, means the extra layer that prevents the pigments of the polyester fabric from penetrating through the flex foil or transfer paper after heat from a transfer press. The so-called bleeding. Sublistop is used when sublimated polyester textiles such as sports shirts, football shirts or softshell jackets are printed. Read the explanation here.

Bleeding is a process that occurs when the pigments of a polyester fabric become active again due to the heat. The pigments penetrate the flex foil or transfer paper and this causes a discoloration.

You can prevent this discoloration by using block out foil, also known as sublistop foil. Bleeding is done exclusively on dark colored polyester fabrics, often printed with a lighter colored flex foil.

We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking Accept you consent to the use of all the cookies. However, you may visit ‘More info’ to provide a controlled consent.