Abstract: Method for producing logs (B1, B2) of continuous thin products, or web products, in optimized manner by tracking defects in the surface and/or in the thickness detected on the products, comprising •—a step of continuously winding a thin product (T) into logs (B1, B2) on a winding machine, in order to produce at least one primary log, •—a step of identifying any defects in the surface and/or the thickness of said continuous thin product, •—a step of storing in a database system (31), outside the primary log, information related to said defects comprising at least the position of said defects with respect to a reference system associated with the primary log, •—a step of assigning a primary ID code to said primary log, •—a step of marking said primary log with said primary code, •—a step of associating, in said database system (31), information on said defects with the primary ID code of the primary log, so that, in said database, to a given primary ID code information are associated related to defects in the s

Abstract: A machine (1) includes an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (N), an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (Na, Nb), and at least one winding station (15). The winding station in turn includes a winding device (41, 51), to which a longitudinal strip (S) of web material is fed. In the winding station, a respective spool (B) of web material is formed. The winding station (15) further includes: a cutting device (81, 83) for the longitudinal strip (S), to cut the longitudinal strip (S) transversely, thus forming a tail edge, which remains on the spool (B) under formation, and a leading edge; and a holding device (85) for holding the leading edge of the longitudinal strip (S), to transfer the leading edge onto a tubular winding core (T) of a new spool to be wound.

Abstract: The line comprises: an unwinding section (3) for unwinding parent reels (Ba, Bb, Bm) of web material (Na, Nb), with at least a first unwinding station (5; 7); at least a winding station (15) downstream of the unwinding section (3); a feed path from the unwinding section (3) toward the winding station (15); The unwinding section (3) is associated with a loading arrangement of the parent reels (Bm), which comprises: an upender (253; 306) configured to upend the parent reels (Bm) positioning them with their axis horizontal; and a loading robot (263; 313), configured to position a parent reel (Bm; Ba, Bb) on an unwinding mandrel (9) of the unwinding section (3).

Abstract: The machine comprises an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (Na, Nb), and at least one unwinding station (15). A winding device (41, 53) is arranged in the unwinding station, and a longitudinal strip (S) of web material is fed to it and a respective spool (B) of web material is formed in it. A control unit (70) is also provided, configured to control the winding speed of the longitudinal strip (S) in the winding station (15), so as to perform an acceleration cycle to accelerate the winding of the longitudinal strip (S), comprising at least one step of gradually increasing the feeding speed (Vp) of the longitudinal strip (S), wherein the feeding speed is linked to the diameter of the spool (B).

Abstract: The machine (1) comprises: an unwinding section (3) of parent reels (Ba, Bb) of web material (Na, Nb); a cutting station (13), comprising a plurality of cutting members (201, 203) to divide the web material (Na, Nb) into longitudinal strips (S); a plurality of winding stations (15); in each winding station (15), a guide arm (31) to guide the longitudinal strip (S), adjustable parallel to the rotation axis (C-C) of the winding mandrel (51). The cutting station (13) comprises sensor members (213, 214) to detect the position of the cutting members (201, 203). A control unit (216) is interfaced with the sensor members (213, 214) of the cutting station (13) and the positioning actuators (27), to position the guide arms (31) parallel to the rotation axis (C-C) of the respective winding mandrel (51) as a function of the position of the corresponding cutting member (201, 203).

Abstract: The machine (1) comprises an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (N), an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (Na, Nb), and at least one winding station (15). The winding station in turn comprises a winding device (41, 51), to which a longitudinal strip (S) of web material is fed. In the winding station, a respective spool (B) of web material is formed. The winding station (15) further comprises: a cutting device (81, 83) for the longitudinal strip (S), to cut the longitudinal strip (S) transversally, thus forming a tail edge, which remains on the spool (B) under formation, and a leading edge; and a holding device (85) for holding the leading edge of the longitudinal strip (S), to transfer the leading edge onto a tubular winding core (T) of a new spool to be wound.

Abstract: The machine (1) comprises: an unwinding section (3) of parent reels (Ba, Bb) of web material (Na, Nb); a cutting station (13), comprising a plurality of cutting members (201, 203) to divide the web material (Na, Nb) into longitudinal strips (S); a plurality of winding stations (15); in each winding station (15), a guide arm (31) to guide the longitudinal strip (S), adjustable parallel to the rotation axis (C-C) of the winding mandrel (51). The cutting station (13) comprises sensor members (213, 214) to detect the position of the cutting members (201, 203). A control unit (216) is interfaced with the sensor members (213, 214) of the cutting station (13) and the positioning actuators (27), to position the guide arms (31) parallel to the rotation axis (C-C) of the respective winding mandrel (51) as a function of the position of the corresponding cutting member (201, 203).

Abstract: The machine comprises an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (Na, Nb), and at least one unwinding station (15). A winding device (41, 53) is arranged in the unwinding station, and a longitudinal strip (S) of web material is fed to it and a respective spool (B) of web material is formed in it. A control unit (70) is also provided, configured to control the winding speed of the longitudinal strip (S) in the winding station (15), so as to perform an acceleration cycle to accelerate the winding of the longitudinal strip (S), comprising at least one step of gradually increasing the feeding speed (Vp) of the longitudinal strip (S), wherein the feeding speed is linked to the diameter of the spool (B).

Abstract: The line comprises: an unwinding section (3) for unwinding parent reels (Ba, Bb, Bm) of web material (Na, Nb), with at least a first unwinding station (5; 7); at least a winding station (15) downstream of the unwinding section (3); a feed path from the unwinding section (3) toward the winding station (15); The unwinding section (3) is associated with a loading arrangement of the parent reels (Bm), which comprises: an upender (253; 306) configured to upend the parent reels (Bm) positioning them with their axis horizontal; and a loading robot (263; 313), configured to position a parent reel (Bm; Ba, Bb) on an unwinding mandrel (9) of the unwinding section (3).