Also often referred to as the Liner or backing. This is the paper or the film that holds the transfer layer or film so you can print and or cut your design. After pressing this is what you remove and throw away.
It appears as a clear shiny sheet attached to the front of a sheet of heat transfer vinyl. This is the side of the htv that should be placed facing down while cutting. There are two different kinds of carrier sheets – pressure sensitive carrier sheets have a sticky backing and static carrier sheets have a smooth backing.