磁性橡胶片(以下简称磁片),是由橡胶原料均匀地掺入剩磁较高的磁粉轧制成型,然后,在强磁场作用下磁化而永久带有磁性.一般来讲,教学中使用的磁片需要印制成各种颜色、图形或符号,并将其制成一定的形状,供教师选用.片材的厚度一般取0.5～1毫米. Magnetic rubber sheets (hereinafter referred to as “magnetic sheets”) are rubber materials that are uniformly incorporated into magnetic powders having a high remanence and are rolled and formed. Then, they are magnetized under the action of a strong magnetic field and are permanently magnetic. Generally speaking, they are used in teaching. The magnetic sheet needs to be printed into various colors, graphics or symbols, and it is made into a certain shape for teachers to choose. The thickness of the sheet is generally 0.5 to 1 mm.