This is slightly confusing. I thought you can either glue or tape tubs to the rim. I use tape, as I only use on my posh bike on the road.
I think the OP refers to sticking the base tape of the tub back on after it has been removed in order to mend a puncture. I always had trouble with this back in the good (?) old days (before 700C clinchers) when I rode tubs all the time for racing and training. I tended to use rim cement for resticking- but in those days I used Dunlop which was very tacky - and sometimes I tried Copydex. The trouble was that it stuck the tape on OK but when you had to remove the tub from the rim again later (another puncture?) the tape tended to stay stuck to the rim and you were left with a tub with the stitching exposed. It was never as good as the original adhesive used by the makers.
Today is the yesterday of tomorrow.