A spool for winding strand-shaped material having flange discs (22, 24) with an outer flange surface and an inner flange surface (21, 23) as well as a method for manufacturing the spool. The discs have a central through bore (30) that is surrounded by an annular recess (25) with an annular wall (26) positioned in the inner flange surface. A tubular spool core (10) has front surfaces which are connected in a materially bonded manner to the annular wall (26) inside the annular recess (25) of the flange discs (22, 24), wherein at least one channel (32) is provided next to the annular wall (26) inside the annular recess (25) for receiving liquefied connection material. The spool core (10) has approximately the same diameter as the annular wall (26) inside the annular recess (25).

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 spool for winding strand-shaped material having flange discs (22, 24) with an outer flange surface and an inner flange surface (21, 23) as well as a method for manufacturing the spool. The discs have a central through bore (30) that is surrounded by an annular recess (25) with an annular wall (26) positioned in the inner flange surface. A tubular spool core (10) has front surfaces which are connected in a materially bonded manner to the annular wall (26) inside the annular recess (25) of the flange discs (22, 24), wherein at least one channel (32) is provided next to the annular wall (26) inside the annular recess (25) for receiving liquefied connection material. The spool core (10) has approximately the same diameter as the annular wall (26) inside the annular recess (25).

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 present invention relates to a stabilizing center core for stabilizing a coil of duct or cable. The stabilizing center core comprises a center tube having a first and a second end. A first plate element is arranged at the first end of the center tube, and a second plate element is arranged at the second end of the center tube. The center core further comprises at least three third plate elements extending between the first plate element and the second plate element and arranged at angular distances around a circumference of the center tube, whereby a duct or cable that is wound around the stabilizing center core is supported by the third plate elements.

A drum assembly includes a core having a first end and a second end opposite the first end, a first hub coupled to the core adjacent the first end of the core, a second hub coupled to the core adjacent the second end of the core, a first flange releasably coupled to the first hub, the first flange including a body having an inner surface, an outer support structure, and an aperture formed therethrough, and a second flange releasably coupled to the second hub, the second flange including a body having an inner surface, an outer support structure, and an aperture formed therethrough.