Transfer tape greatly aids the process of moving vinyl from its backing to the desired location.Heat transfer vinyl has a clear carrier sheet attached to the vinyl used.Once the vinyl is cut the excess vinyl is removed (weeded) and the project should be left on the backing.Then apply transfer tape to the project so that the vinyl will stick to the transfer tape when the backing is removed.The tape (and vinyl) are then applied to the desired location.Using the application tool, the vinyl should be rubbed with enough pressure to adhere it to the application surface and remove any air bubbles. Then slowly remove the transfer tape by pulling down one corner at an angle, slowly watching for any lift in the vinyl. So do you need transfer tape? In short, probably. You can move the vinyl from its backing to another location without transfer tape, but it will be very difficult if there are any spaces or intricate details.