Described is a machine for making absorbent sanitary articles which comprise an absorbent pad (2) in turn comprising at least one discrete layer (19) of superabsorbent polymer material (4)； the machine (1 ) comprises a unit (7) for forming and applying a succession (8) of absorbent pads (2) and which comprises a drum (10) for forming the absorbent pad (2), a duct (13) for feeding a charge of superabsorbent polymer material (4) to the forming drum (10) and intermittent valve means (15) mounted along a stretch (T) of the feeding duct (13) and driven by its own actuator unit (20)； the machine (1 ) comprises a device (16) for detecting the superabsorbent polymer material (4) defining the discrete layer (19) of the absorbent pad (2) and sends to a control and drive unit (17) connected to the detecting device (16) a detection signal (18) indicating that the superabsorbent polymer material has been detected； the control and drive unit (17) is configured to drive the actuator unit (20) to bring the valve means (15) into phase with the rotation of the forming drum (10) when the deviation of the detection signal (18) from the reference signal (19) exceeds a defined threshold value.L'invention concerne une machine pour fabriquer des articles hygiéniques absorbants qui comprennent un tampon absorbant (2) comprenant à son tour au moins une couche distincte (19) de matière polymère superabsorbante (4) ； la machine (1) comprend une unité (7) pour former et appliquer une succession (8) de tampons absorbants (2), et qui comprend un tambour (10) pour former le tampon absorbant (2), un conduit (13) pour distribuer une charge de matière polymère superabsorbante (4) au tambour de formation (10), et un moyen de valve intermittent (15) monté le long d'une extension (T) du conduit de distribution (13) et entraîné par sa propre unité d'actionneur (20) ； la machine (1) comprend un dispositif (16) pour détecter la matière polymère superabsorbante (4) définissant la couche distincte (19) du ta
