There are dryers, and there are “dryers” – especially in the electronics manufacturing industry. “Dryer” should be understood as an umbrella term for thermal systems in the electronics industry, which are not used to produce firmly bonded connections, i.e., neither soldered, sintered, nor diffusion-soldered. These can be real drying processes (e.g. the drying out of pastes), curing (e.g. of polymer coatings), burn-in processes (burn-in test for components to locate early defects) or, annealing (to produce special properties of connecting materials).
You can read the entire article (EPP Europe 04/2019) here.
Further information can be found at www.epp-europe.industrie.de.