A disclosed method is a method of manufacturing a battery including a wound electrode assembly in which a first separator, a negative electrode plate, a second separator, and a positive electrode plate are wound together. The method includes steps of winding the first separator, the negative electrode plate, the second separator, and the positive electrode plate onto a winding core, to prepare a wound electrode assembly, and removing the wound electrode assembly from the winding core. The winding core includes a first component and a second component. In the step of removing the wound electrode assembly from the winding core, at least one of the first component and the second component moves in a direction in which a distance between the first component and the second component decrease so that a diameter of the winding core decreases. Thereafter, the wound electrode assembly is removed from the winding core.

The device incorporates a mobile station with: a first shaft to support a movable reel and to actuate rotation of the movable reel around the first shaft; a grip for gripping and releasing the movable reel from a first side of the movable reel closest to the first shaft; and a transporter to move the movable reel in the direction of the first shaft between the mobile station and a loading position. The process handles one single reel in each change, reducing labor and simplifying logistical management of reels. Likewise, the reels are handled from one single side, the side closest to the first shaft. Therefore, space is freed up on the other side, providing more available space.

Disclosed herein is an extraction assembly for producing coreless logs. The extraction assembly includes a rectilinear transporter (20) of a log (11) wound about a disintegrable core (12), and a gripping device (30) for a portion of the core (12) projecting from the log (11), wherein the rectilinear transporter (20) has a transverse transport direction with respect to a log advancement direction of the log (11) along the converting line (100), and has an alternating transport direction back and forth in opposite directions, and the rectilinear transporter (20) contains a first portion for being received within the converting line (100), and a second portion for being placed outside the converting line (100), in which the second portion is aligned with respect to the first portion along the transverse transport direction. Also disclosed herein are a converting line containing the extraction assembly, and methods for producing coreless logs.

A method for producing coreless roll paper includes a winding step in which paper 11 is wound on a shaft 20 in a roll shape, and an extracting step in which the shaft 20 is extracted from roll paper 12 to form a center hole 13. The shaft 20 includes a body part 22 having grooves 23, and a sleeve 30 is put on and fixed to the body part 22. In the winding step, the paper 11 is wound on the sleeve 30.

A roll body taking-out unit that takes out a roll body from a reel that holds a carrier tape storing components in a state of the roll body and stores the roll body in a case is provided. The roll body taking-out unit includes a separation unit that separates the roll body from the reel, and a roll body storage unit that stores the roll body separated from the reel by the separation unit in a case. Further, the roll body storage unit includes a case holding part that holds an empty case, and a chute part that stores the roll body separated from the reel by the separation unit one by one in the empty case held by the case holding part.

A coreless flexible film packaging system is disclosed. The system includes: (i) a containment cylinder including a cylindrical wall defining first and second cylinder end apertures and an interior film containment area; (ii) a film feed slot in the cylindrical wall extending longitudinally along the containment cylinder; and (iii) a supply of flexible film wound about itself to form a film roll having a central cylindrical cavity, said roll including a leading end and a terminal end and contained within the interior film containment area. A coreless containment package and a method for packaging a flexible film are also described.

A method for stripping a winding mandrel from a roll formed by wrapping a web around the winding mandrel includes the following phases: to support the formed roll so that an end of the respective winding mandrel is adjacent to a gripping and rotating means for the winding mandrel; to connect the gripping and rotating means to the end of the winding mandrel and through this means place the winding mandrel in axial rotation; and to apply, by means of a translation means, an axial force to the gripping and rotating means and to the mandrel and, according with the axial force, translate this mandrel by sliding it off the formed roll.

A machine forms a roll of convolutely wound web material. The machine includes a winding apparatus configured to receive a mandrel and the web material and wind the web material around the mandrel. A pulling device pulls the mandrel longitudinally to remove the mandrel from the roll after forming the roll. The machine further includes a restraint that engages the peripheral surface of the roll when the mandrel is pulled longitudinally to remove the mandrel from the roll. A method is also provided. In one aspect of the method, a web material is wound around a mandrel to form a roll of convolutely wound web material. The mandrel is pulled longitudinally after the step of winding the web material around the mandrel. The periphery of the roll is restrained from moving axially when the mandrel is pulled longitudinal. The mandrel is then removed from the roll.

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 gum roll is provided. The method includes providing a strip stock having a first end, a first surface, and a second surface opposite to the first surface. The first end of the strip stock is coupled to a core fixture so the first surface interfaces with the core fixture. The strip stock is rotated to wind the strip stock onto the core fixture such that the first surface interfaces with the second surface to form the gum roll. The method further includes cutting the strip stock to form the second end when the gum roll is wound to an outer roll diameter, the outer roll diameter being greater than a diameter of the core fixture.