An absorbent substrate web coating apparatus (10) for applying a coating material (21) on a web of absorbent substrate (20) over a defined length (L) includes: - a support device (3, 33, 34) arranged to support the web of absorbent substrate (20) running at a speed ranging from around 200 m/min to around 1.200°m/min, - a dosing and transfer device (1, 2) arranged to cooperate with a coating material storing and transferring unit (30, 31, 32) such as to continuously coat a surface (9) of the dosing and transfer device (1) with an uniform quantity of coating material (21), and - an oscillating mechanism (5, 15, 25, 35) arranged to oscillate the dosing and transfer device (1, 2) or the support device (33, 34) from an engaged position (P1) to a remote position (P2), the dosing and transfer device (1, 2) being arranged relatively to the support device (3, 33, 34) such that the transfer device (1, 2) applies the coating material (21) to the web of absorbent substrate (20) at a contacting location where the web of absorbent material (20) contacts the support device (3, 33, 34) and the dosing and transfer device (1, 2) only in the engaged position (P1).Un aparato de revestimiento de trama de substrato absorbente (10) para aplicar un material de revestimiento (21) sobre una trama de substrato absorbente (20) por una longitud definida (L) incluye: - un dispositivo de soporte (3, 33, 34) adaptado para sostener la trama de substrato absorbente (20) que pasa a una velocidad que varía desde aproximadamente 200 m/min hasta aproximadamente 1,200 m/min, - un dispositivo de dosificación y transferencia (1, 2) adaptado para cooperar con una unidad de almacenamiento y transferencia de material de revestimiento (30, 31, 32) de tal manera que se revista continuamente una superficie (9) del dispositivo de dosificación y transferencia (1) con una cantidad uniforme de material de revestimiento (21), y - un mecanismo oscilante (5, 15, 25, 35) adaptado para oscilar el dispositivo de dosificac
