TEARING AND WINDING ASSEMBLY IN A TAMPON MANUFACTURING APPARATUS AND METHOD FOR MANUFACTURING SUCH TAMPON BY MEANS OF SUCH APPARATUS

A tearing assembly (2) in an apparatus for manufacturing of tampons, in particular hygienic tampons made of helically wound endless band (1) consisting of absorbent fibers, wherein said assembly is intended for tearing of said band to separate longitudinal sections (1'), so that by winding of each section (1') into a blank an undesired step-like terminal edge of the band (1) can be avoided, which would otherwise lead to essential deviation from a desired cylindrical shape of the blank. Said tearing assembly (2) comprises a stationary first pair of rollers (21', 21''), which are by circumferential velocity (v1) rotated in opposite directions, as well as an oscillatory to and fro along the plane of transferring said absorbent band (1) displaceable second pair of rollers (22', 22''), which are also rotated in opposite directions by constant circumferential velocity (v2). The distance between said first terminal position and said second terminal position of the second pair of rollers (22', 22'') is determined in such manner that during displacing of the second pair of rollers (22', 22'') together with each particular section (1') of the absorbent band (1) as jammed there-between in a direction away from the first pair of rollers (21', 21'') said absorbent band (1) is just partially torn, upon which said partially torn band (1) is introduced into said winding assembly (3), namely through the passage (31') in the rotor (31) as well as through the passage (32') in the stator (32) of each disposable winding unit (3'), so that said band (1) is completely torn by means of rotating said rotor (32) of the winding assembly (3) during the reverse displacement of the second pair of rollers (22', 22'') towards the first pair of rollers (21', 21''). Ensemble de déchirement (2) dans un appareil de fabrication de tampons, en particulier des tampons hygiéniques fabriqués avec une bande sans fin enroulée en hélice (1) constituée de fibres absorbantes, ledit ensemble étant destiné à la déchirure de ladite bande pour séparer des sections longitudinales (1'), de sorte que, par enroulement de chaque section (1') dans une ébauche, un bord terminal de type étape indésirable de la bande (1) peut être évité, ce qui conduirait autrement à une déviation essentielle à partir d'une forme cylindrique souhaitée de l'ébauche. Ledit ensemble de déchirement (2) comprend une première paire de rouleaux stationnaire (21', 21''), dont la vitesse circonférentielle (v1) provoque la rotation dans des