Coiled material box and operation method thereof

The invention relates to a coil box for winding a metal strip into a coil and for unwinding the metal strip from the coil. In order to improve known coil boxes in such a way that the position of the coil is known, in particular at any time during passive transfer from the winding station to the unwinding station, the invention proposes that at least one additional roller (116) is provided which is rotatably mounted on a frame (114). 本发明涉及一种用于将金属带材卷绕成卷材以及用于将金属带材从卷材退绕的卷材箱。为了改进已知的卷材箱，使得尤其在从卷绕站无源转移到退绕站期间的任何时候都知晓卷材的位置，本发明提出，设置可旋转地支承在框架(114)上的至少一个附加辊子(116)。