A converting line includes a rewinding machine for winding web material into a log. For time points during a time period of the log wind cycle, predictive information representative of a log to be wound is generated and stored in a memory of a control of the rewinding machine. An image capture device is enabled to capture a plurality of images of the log being wound in the winding nest at the plurality of corresponding time points during the time period. Log image capture information is generated based upon the plurality of captured images and corresponding time points during the time period. The log image capture information is compared with the generated predictive log image information to determine a difference in log image. Revised predictive log image information is generated based at least in part upon a difference in the log image capture information relative to predictive log image information.

A coreless roll of an absorbent sheet product, such as napkins, toilet paper, towels etc., including a spirally wound continuous web of absorbent material having a first end and a second end and a coating composition comprising a specific polymer coated onto the second end is disclosed. The coreless roll has excellent resistance to collapsing, as well as excellent flexibility and elasticity. Moreover, the coreless roll has excellent disintegrability in water and can be used along its whole length. Also disclosed is a process for the manufacture of the coreless roll.

The rewinding machine includes a first winding cradle, formed between a first winding roller, a second winding roller and a third winding roller, and a second winding cradle formed between the first winding roller, the second winding roller and a fourth winding roller. The first winding roller and the second winding roller define a nip through which nip the winding cores, around which the web material is found, pass and the web material is fed towards a roll being formed in the second winding cradle. A severing member is furthermore provided, acting on the web material between a winding core and the nip, to sever the web material thus generating a tail edge of a completed roll and a leading edge of a new roll to be wound.

A rewinding machine for the production of rolls of web material wound around winding cores includes: a winding cradle including peripheral winding members of the rolls; a feeding path of the web material towards the winding cradle; an insertion channel for inserting the winding cores towards the winding cradle, having an entrance inside which the winding cores are introduced and an exit toward the winding cradle, the insertion channel being defined between a rolling surface and a continuous flexible member, provided with a forward movement; an inserter for inserting the winding cores into the inserting channel. At the entrance of the insertion channel a pressing device is arranged, said pressing device projects toward the inside of the insertion channel and toward the continuous flexible member. The pressing device is arranged and configured to press the winding cores entering the insertion channel towards the continuous flexible member.

A rewinding machine arranged to wind a web of absorbent substrate into multiple logs including a perforating module, a cutting module, a winding module and a control module, the web of absorbent substrate travelling into the modules according to a machine direction, wherein the perforating module is arranged to provide the web of absorbent substrate with regularly spaced perforation lines substantially transversally orientated relatively to the machine direction, wherein the cutting module is arranged to sever the web of absorbent substrate substantially transversally relatively to the machine direction, wherein the winding module is arranged to wind the web of absorbent substrate so as to produce logs of web of absorbent substrate, and wherein the control module is coupled to the perforating module and to the cutting module and controls the modules operations.

A core end engagement assembly is provided for a rewinding machine. The core end engagement assembly is configured to engage an end of the core and transmit rotational movement to the core during winding of the web material about the core. The assembly may include a drive housing. A chuck may project from a first end of the drive housing and may be configured to engage the end of the core. A first actuator may reciprocate the drive housing along a central axis of the core between an engagement and disengagement position of the chuck relative to the core. A second actuator may be mounted on the drive housing. The second actuator may be configured and adapted to move the chuck between release and hold positions. A flexible drive shaft operatively connects with and rotationally drives the chuck.

A leading edge device for incorporation into an introductory portion a concave cradle is disclosed d. The concave cradle is associated with an upper winding roller of a surface winder to form a winding cradle for winding a web material having a velocity, v, around a core having a radius, R, inserted therein to obtain a log. The leading edge device has a surface having a texture provided thereto for contacting the core.

A surface winder for winding a web material around a core to obtain a log is disclosed. The surface winder provides a core inserter for inserting a core into an introductory portion of a winding cradle defined by an upper winding roller, a concave cradle, a lower winding roller, and a third oscillating roller. The concave cradle has a leading edge device having a surface with at least one channel disposed therein. The at least one channel has a single entry point and a single exit point and extending from a position external to the leading edge device and a first location disposed upon the surface capable of receiving a fluid from the at least one channel. The fluid is fluidically displaced onto the core from the at least one channel when the core is in contacting engagement with the first location disposed upon the surface.

An introductory portion for a surface winder is disclosed. The introductory portion comprises a surface. The surface has at least one channel disposed therein. The at least one channel has a single entry point and a single exit point and extends from a position external to the introductory portion and a first location disposed upon the surface. The first location is disposed upon the surface and is capable of receiving a fluid from the at least one channel. The fluid is fluidically displaced onto the core from the at least one channel when the core is in contacting engagement with the first location disposed upon the surface.

An axial flow element for use in a liquid separation system for an internal combustion engine includes a hub, a groove, a locking member, and a flat layer. The hub includes a cylindrical outer surface. The groove is disposed in the outer surface. The groove extends in a substantially longitudinal direction along the hub from a first end of the hub to a second end of the hub. The locking member is disposed in the groove. The flat layer is disposed between the hub and the locking member.