| 摘要 |
<p>The present invention relates to a roll product consisting of a band-shaped web of material having a first end and a second end and a hollow cylindrical core (101) onto which the band-shaped web of material is wound, the hollow cylindrical core (101) having a longitudinal direction and a radial direction, the hollow cylindrical core (101) comprises an inner surface (102), an outer surface (103), and at least one protuberance (104) protruding outwardly from the outer surface of the hollow cylindrical core (101), principally in the radial direction of the hollow cylindrical core, for mechanically and releasably engage and hold the first end of the band-shaped web of material. The protuberance (104) is an integral part of the hollow cylindrical core (101) and comprises the inner surface (102) and the outer surface (103) of the hollow cylindrical core. The invention also relates to a method for the manufacture of a roll product and an apparatus for the manufacture of a hollow cylindrical core.</p> |
