| 摘要 |
PURPOSE: A bobbin for winding a film is provided to reduce defect rates generated in a production process of products having the film and to reduce the unit cost of the products by improving the quality of the products. CONSTITUTION: A bobbin for winding a film(100) comprises a body(1), a film receiving groove(3), and a film fixing part(51). The film(F) is wound on the exterior of the body; and the body has a stepped face on the exterior thereof. The body is a cylindrical shape. The film receiving groove is arranged in the body so that one end of the film can be inserted. The film fixing part fixes the position of the film inserted in the film receiving groove. The height(D) of the stepped face is same as the thickness(t1) of the film wound on the body.
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