1) A tool used for placing adhesive, plasters etc 2) Someday trained to place special coating, sealing etc
An applicator is a device that you use to put something somewhere when you do not want to touch it or do it with your hands. a special brush or tool used to spread a cream, liquid, medicine etc onto a surface
That part of the hot melt system that is used to heat adhesive to its required application temperature and pump it to the hose(s) and gun(s) It consists of a tank or reservoir, pump, filter, distribution manifold and temperature controlled heating system