| 摘要 |
PURPOSE:To continuously wind a film as a coil so as not to bring its obverse and reverse sides into contact with each other, by securing the outer end of the film wound as a roll, in a position, the distance from which to the center of the film is not less than the radius of the roll. CONSTITUTION:A film 8 wound around a bobbin is placed on a rest 5 so that a vertical shaft 1 penetrates the center of the bobbin. The center of the bobbin is positioned by an adapter 3. A bolt 2 is tightened to secure the bobbin on the rest 5. The outer end of the film 8 is fixed on a part of a fixed wall 4. When the shaft 1 is rotated in such a direction as to unwind the film 8, an opening is made between the parts of the film. When the shaft 1 is rotated in the opposite direction, the film is tightly wound again. |
