Abstract: An applicator device comprises two casing parts pivotally connected for movement between a longitudinally aligned closed position and a folded open position, one of said casing parts providing a tape supply chamber and the other providing a chamber for receiving and accumulating the tape after use. A flexible member anchored on the one casing part extends between the casing parts for forming a backing for the exposed material when the casing parts are relatively pivoted to said open position, and the flexible member at the same time acts to advance material out of the supply chamber and toward the other casing part. Unidirectional pawls in the other casing part are effective when the casing parts are relatively pivoted to closed position for preventing retraction of the tape.