not really answering your Q but i've used these self adhesive patches for a few years now mate, they work flawlessly, much better than faffing around with glue.
Used them for years and years too (maybe as long as 10 years ?!) - work flawlessly for me too, they are meant to be temporary (I think) but I have scooted around on inner tubes with two or three of these patches put on a a year or two back.
Used them for years and years too (maybe as long as 10 years ?!) - work flawlessly for me too, they are meant to be temporary (I think) but I have scooted around on inner tubes with two or three of these patches put on a a year or two back.