A foil dispensing device for on demand dispensing of sections of foil of a selectable length includes a housing comprising a lid that is hingedly engaged to a box so that the lid is positioned to selectively close an open top of the box. A motor is engaged to and positioned the box. A spindle is positionable in box to operationally engage the spindle to the motor. A roll of foil is positioned around spindle so that a free end of the roll of extends into a slot positioned in the housing. A motion sensor engaged to the housing and operationally engaged to the motor is actuated by motion of a hand of a user to signal the motor to rotate the spindle to dispense a section of the foil through the slot. A cutter positioned by the slot cuts the foil to separate the section from the roll.

A reusable paper core including a cylindrical body having a circular outer periphery surrounding an open interior. The cylindrical body is configured to receive a roll of paper. The paper core includes at least one plate that spans at least a portion of the open interior such that the at least one plate connects at least two portions of the outer periphery. The at least one plate defines a non-circular central opening.

The invention describes a sleeve for sliding onto and removing from a winding shaft, which comprises a one-piece workpiece defining a cylinder, which workpiece comprises two edge regions each having an edge, the edge regions overlapping one another, the sleeve having a first diameter in a relaxed state, the sleeve in a clamped state having a second diameter which is different from the first diameter, the sleeve in the clamped state experiencing an elastic deformation as compared to the relaxed state.

A material roll includes a core made from expanded metal, and a first sheet of material wound a plurality of times over the core.

The invention relates to a reel for a winder, comprising: a mandrel (10) extending around an axis of rotation (X) of the reel, a plurality of pairs of lateral arms (20a, 20b) extending on both sides of the mandrel (10), together acting as flanks defining, between them, a winding volume for the link,
said reel being characterised in that it comprises a closed flange (40) attached to the arms (20a) constituting one of said flanks, said flange having a thickness of between 10 and 40 mm.