Rewinder for the production of logs. A feeding element adapted to supply a paper web. A guide element adapted to guide sequentially several cores along a predetermined path between a station for feeding the cores and a winding station in which a predetermined amount of the web is wound on each core. A winding element adapted to wind the paper web on the cores in the winding station. The guide element includes a guide with a curved end section that ends in the winding station and in cooperation with the winding element, delimits a channel crossed by each core before reaching the winding station.

Process for the production of paper rolls, including a step of producing logs (L) of paper material by winding a predetermined amount of paper web (W) about a respective longitudinal axis, a step of transverse cutting of the logs (L) to obtain rolls (RO) of predetermined length, and an intermediate step of transporting the logs (L) from a rewinder (R) that produces the logs (L) toward a cutting-off machine (CM) that cuts them transversely. The intermediate transporting step involves the handling of the logs (L) along a path comprising a lateral deviation, so that, as they advance, the logs (L) are subjected to the lateral deviation.

A winding machine (10) is disclosed comprising at least one reel holder (12) mounted on a supporting frame (11) and N rotatable around its own axis (13), and a plurality of reels (1-4) mounted on the holder (12) and integrally rotatable therewith so that at least one first reel (1) is in at least one operative winding position of a bobbin (5). It is further described a respective method for the in-line winding of bobbins (5) of stretch film (6), comprising the steps of rotating a core (7) on a reel (1) in an operative winding position to wind the film (6) onto the core (7), positioning a contact roll (15a) in at least one proximal contacting position in which it contacts the winding bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the core (7), bringing the reel (1) from the operative winding position of the bobbin (5) to an operative unloading position of the bobbin, positioning an accompanying roll (15b) in at least one proximal contacting position in which it contacts the bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the bobbin (7), transversally cutting the stretch film (6) and unloading the bobbin (5). The movement of the contact roll (15a) and the accompanying roll (15b) is carried out by means of electric actuators (18a, 18b).

Provided is a rewinding machine including a winding zone wherein a continuous strip is wound around a core; a movement unit of the continuous strip defining a sliding surface for the continuous strip; a support unit defining a support surface for the core; the support surface is opposite and spaced from the sliding surface so as to define a sliding channel, configured to guide the core in the winding zone; a contrast unit defining a contrast surface; and a tearing tooth configured to press the continuous strip against the contrast surface causing the tearing of the continuous strip; said sliding surface being interposed between the support surface and the contrast surface.

A method of forming a roll of convolutely wound web material. The method includes applying adhesive to an elongated mandrel, winding web material around the mandrel to form a roll of convolutely wound web material, rotating the mandrel relative to the roll to smear the adhesive, and removing the mandrel from the roll. The smearing can be in a circumferential direction. The adhesive can be applied longitudinally along the mandrel. The adhesive preferably has a viscosity within the range of 3000 to 18,000 cps. Preferably, the method includes pulling the mandrel longitudinally before the step of removing the mandrel from the roll. The pulling can reduce the mandrel diameter and/or can increase its length. The rotating can be conducted before the pulling, during the pulling or during the winding. The rotating can be conducted before or during the removing. The web material can be bathroom tissue or kitchen towel.

A recording device includes a conveyance mechanism, a recording mechanism, a rotational mechanism of a plurality of take-up spindles, and a control unit. The conveyance mechanism is configured to convey a recording medium intermittently in a conveyance direction. The recording mechanism is configured to record by reciprocatingly scanning a recording head in a direction that intersects with the conveyance direction. The rotational mechanism is configured to take up the recording medium. The control unit is configured to control the conveyance mechanism and the rotational mechanism to substantially synchronize conveying of the recording medium by the conveyance mechanism and taking-up of the recording medium by the rotational mechanism.

A winding apparatus that can restrain a medium from being wound unevenly when a long medium is wound around a winding roller and a printing apparatus that includes the winding apparatus are provided. A winding apparatus includes a winding section that has a winding roller rotatably supported therein and winds a long medium around the winding roller. The winding section also has a pressing portion that presses the medium toward the winding roller.

A winding apparatus that can restrain a medium from being wound unevenly when a long medium is wound around a winding roller and a printing apparatus that includes the winding apparatus are provided. A winding apparatus includes a winding section that has a winding roller rotatably supported therein and winds a long medium around the winding roller. The winding section also has a pressing portion that presses the medium toward the winding roller.

A material strip collection mechanism coiling fed material strip on a reel includes a vertically positioned reel bracket rotatable about a vertical axis between a first configuration and a second configuration. The mechanism further includes a first arm holding the reel and a second arm each rotatable to drive the reel and coil the material strip on the reel. With the reel bracket in the first configuration, the first arm is in a material strip collection position to allow the material strip to be coiled on each empty reel held by the first arm to form a full reel, while the second arm is in a standby position to allow the full reel held by the second arm to be replaced with a new empty reel.

A method of forming a roll of convolutely wound web material. The method includes winding web material around an elongated mandrel to form a roll of convolutely wound web material. The mandrel is substantially axially elastic and formed of material having a tensile yield strength divided by elastic modulus greater than 2.0%, and more preferably 2.5%. The mandrel is preferably radially complaint. The method further includes removing the mandrel from the roll. A further method includes winding web material around an elongated mandrel to form a roll of convolutely wound web material, the mandrel being comprised of material having a tensile yield strength divided by elastic modulus greater than 2.0%, and then longitudinally elongating the mandrel.