Lamination and bonding in clothing is just a heat-activated adhesive, so you’re pretty much right. You could dry some Wundaweb – yes, the stuff used for turning up trousers and similar – or there’s a powder form heat-activated adhesive called Supermend that you could try. I’ve used the latter for some basic patching and it works pretty well ime.
I’ve never tried fixing a delaminated chamois, but I suspect the main issue will be getting enough heat to the adhesive without damaging the fabrics. I’d start with a low temperature, follow the instructions – bear in mind that the temp settings on your iron may be wrong – and do some practice runs first on scraps of fabric. Use some cotton rag to stop the iron directly contacting the material of the tights/chamois and melting it.
