Abstract: An installation for coating substantially U-shaped or V-shaped articles, such as hairpins, curlers and similar items includes treatment stations comprising a coating station at which a powderous plastic material is applied onto those portions of the objects which are to be coated, a heating station at which the said portions of the objects are heated to a temperature at which said powderous plastic material melts, and conveying means for conveying said objects to said stations. The installation according to the instant invention comprises at its inlet end inlet means for introducing in bulk the objects to be coated into said installation, pick-up means for separately picking up said objects one by one, and orienting and feeding means for feeding said objects to said coating stations, at least a part of said orienting and feeding means being adapted to mask the remaining portions of said objects, which are not to be coated.