Many clients confuse of the iron on and adhesive.
There are two kinds stick on fabric patches .
1. Iron on patches. It is use the 150℃/302℉ to iron on the clothing. It could wash.
You could use the Household electric iron to do. Or you could use the heat press machine do it again.
2. peel off adhesive patches. not good with water wash. peel off sticker backing for one-time.