| 摘要 |
A core which can be plugged onto a winding shaft for winding an endless, flexible material web to form a reel (10, 60, 70), wherein the core has means for adjusting the diameter of its surface to be wound between a rest state of reduced diameter and an expanded working state, and wherein the winding surface is of jointless configuration in the expanded state. A reel can therefore be stored until it is used up, and the core can then be pulled out of the reel and the reel can be surrendered, with the result that the circulation of sleeves is dispensed with. |
