为了提高胶带的调心性能,取滚筒中部直径比两端的直径大些,这就是鼓形滚筒。鼓形的大小是以中部与端部直径之差(鼓度)来表示(以毫米为单位)。 日本鼓形滚筒的典型形状有三种。从调心性能和胶带的应力分布来看,图(c)的形状是较理想的,而对宽幅的胶带则采用图(b)或(c)的情况为多。此外, In order to improve the self-aligning performance of the tape, take the diameter of the middle of the drum larger than the diameter of the two ends, which is the drum drum. The size of the drum is expressed in millimeters by the difference between the center and the end diameter (drum). There are three types of typical drum drums in Japan. From the aligning properties and the stress distribution of the tape, the shape of (c) is preferable, while in the case of wide tapes, the case of (b) or (c) is large. In addition,