Why does my iron-on vinyl peel off?

Why does my iron-on vinyl peel off? Temperature Irregularities Another reason your heat transfer vinyl is peeling involves your pressing temperature. When you inadvertently set your heat press to the wrong temperature, you either don’t melt the vinyl onto the fabric appropriately, or you damage the adhesive.

Temperature Irregularities

Another reason your heat transfer vinyl is peeling involves your pressing temperature. When you inadvertently set your heat press to the wrong temperature, you either don’t melt the vinyl onto the fabric appropriately, or you damage the adhesive.