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.

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 split spool assembly for discharging filament to a three-dimensional printer is provided. The assembly includes a first spool part having a first reel collar angularly spaced from an axis and a first hub portion, which is disposed about the axis and angularly spaced from the first reel collar. The assembly further includes a second spool part having a second reel collar angularly spaced from the axis and a second hub portion, which is disposed about the axis and angularly spaced from the second reel collar. The first and second collars are spaced from one another for storing a predetermined amount of filament therebetween. The first and second hub portions are disposed about the axis and terminate at associated first and second ends, with the first and second ends being positioned adjacent to one another such that the first and second hub portions are arranged in series along the axis.

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 method of grooving a durable transfer roll core may comprising loading the durable transfer roll core onto a grooving apparatus and grooving a main surface of the durable transfer roll core via engagement with one or a plurality of cutting tools of the tooling section of the grooving apparatus.

A durable transfer roll core may comprise an elongate body comprising a groove, the elongate body having a longitudinal axis. The groove may comprise a Groove Angle from about 0 to about 90 degrees (relative to the longitudinal axis) and the groove may comprise a Groove Depth greater than about 0.003 inches.

A driveshaft for a reusable paper core includes a shaft body having a proximal end, a distal end, and a medial portion extending between the proximal end and the distal end. An outer periphery of the medial portion has a non-circular cross-sectional shape. The driveshaft includes one or more receptacles provided in an outer surface of the medial portion of the shaft body, a first bearing coupled with the distal end, a second bearing coupled with the proximal end, and one or more gear keys coupled with the proximal end. The one or more gear keys may be configured to transfer force from a rotating machine element to the driveshaft.

A driveshaft for a reusable paper core includes a shaft body having a proximal end, a distal end, and a medial portion extending between the proximal end and the distal end. An outer periphery of the medial portion has a non-circular cross-sectional shape. The driveshaft includes one or more receptacles provided in an outer surface of the medial portion of the shaft body, a first bearing coupled with the distal end, a second bearing coupled with the proximal end, and one or more gear keys coupled with the proximal end. The one or more gear keys may be configured to transfer force from a rotating machine element to the driveshaft.

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

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.