Originally Posted by
noglider
The pressure in the tire squeeze the patch between the tube and the tire, assuring that it will stay in place. Peeling it off is possible, but it takes effort. It doesn't happen by accident.
Only tangentially related, but in the past we used a lot of stick-on type patches when I lived in goat head territory and we found that some would develop leaks over time despite being continually squeezed between the tube and tire. Now we just use them for temporarily if needed and replace with a glue-on types at a later convenient time.
Most often, my newly patched tubes don't go in a tire but get folded up to use in exchange with the next punctured tube.
As a counterpoint, there are others in these forums who say they haven't had any issues with stick-ons.