Idk about the other comments, I was responding to your initial request for the bonding material when making patches. I’m EU based, in AUS you’ll probably have different brands for the same goal. Have you checked sewing supplies webshops (or rather machine embroidery webshops)? Not all of them have this adhesive, but if they have a wide variety of different kinds of machine embroidery stabilisers then there’s a chance they will have rhis as well. Here’s an example hswoz.com.au/…/iron-on-backings/