| 摘要 |
PURPOSE: A knurling method and device, a solution film forming method, and a polymer film are provided to wind the polymer film around a winding core by preventing wrong winding or loose winding. CONSTITUTION: A knurling method is as follows. A material to be knurled is transferred to both edges(75e) of the surface of a polymer web in a width direction. Films are formed on both edges of the surface of the polymer web. Knurls(70) are formed when the formed films are dried. The films are composed of the material to be knurled. |
