Labelling module for applying labels obtained from a web of labelling material onto articles adapted to contain a pourable product, the labelling module comprising: - a feed system for feeding the web along a feed path; - a cutting unit for cyclically cutting the web at a cutting station arranged along the feed path, thereby obtaining a sequence of labels; and - a transfer device for receiving the sequence of labels from the cutting unit, and for transferring them to an application station, to apply the labels onto respective articles; wherein the cutting unit comprises a first roller carrying at least one first cutting element at a lateral surface thereof, and a second roller carrying at least one second cutting element at a lateral surface thereof, the cutting station being arranged between the lateral surfaces (15a, 17a) of the first roller and of the second roller, the first roller and the second roller being rotatable for cyclically conveying simultaneously the first cutting element and the second cutting element at the cutting station, to perform the cyclical cutting of the web by means of cyclical cooperation between the first cutting element and the second cutting element; and wherein the cutting unit comprises a stopping member carried by one of said first roller and second roller, and configured to cyclically interact with the web during the cutting thereof at a position which is, along the feed path and according to the web feeding direction, exclusively downstream of the cutting station, for temporarily blocking a movement of the web along the feed path; wherein the feed system comprises a feed roller configured for advancing the web along the feed path with a predetermined feeding speed; wherein the second roller is configured to support the web on its lateral surface and to be rotated at a rotational speed defining a web support linear speed; wherein the transfer device comprises a vacuum drum configured for receiving the cut labels from the cutting unit, for spacing the received labels from one another and for applying the spaced labels onto the articles at the application station, and wherein the vacuum drum is configured to be rotated at a rotational speed defining a transfer linear speed which is greater than said feeding speed and/or equal to said support linear speed, characterised in that said web support linear speed is greater than said feeding speed, to cause a cyclical sliding of the web on the lateral surface of the second roller. - a feed system for feeding the web along a feed path; - a cutting unit for cyclically cutting the web at a cutting station arranged along the feed path, thereby obtaining a sequence of labels; and - a transfer device for receiving the sequence of labels from the cutting unit, and for transferring them to an application station, to apply the labels onto respective articles; wherein the cutting unit comprises a first roller carrying at least one first cutting element at a lateral surface thereof, and a second roller carrying at least one second cutting element at a lateral surface thereof, the cutting station being arranged between the lateral surfaces (15a, 17a) of the first roller and of the second roller, the first roller and the second roller being rotatable for cyclically conveying simultaneously the first cutting element and the second cutting element at the cutting station, to perform the cyclical cutting of the web by means of cyclical cooperation between the first cutting element and the second cutting element; and wherein the cutting unit comprises a stopping member carried by one of said first roller and second roller, and configured to cyclically interact with the web during the cutting thereof at a position which is, along the feed path and according to the web feeding direction, exclusively downstream of the cutting station, for temporarily blocking a movement of the web along the feed path; wherein the feed system comprises a feed roller configured for advancing the web along the feed path with a predetermined feeding speed; wherein the second roller is configured to support the web on its lateral surface and to be rotated at a rotational speed defining a web support linear speed; wherein the transfer device comprises a vacuum drum configured for receiving the cut labels from the cutting unit, for spacing the received labels from one another and for applying the spaced labels onto the articles at the application station, and wherein the vacuum drum is configured to be rotated at a rotational speed defining a transfer linear speed which is greater than said feeding speed and/or equal to said support linear speed, characterised in that said web support linear speed is greater than said feeding speed, to cause a cyclical sliding of the web on the lateral surface of the second roller.