Patent ID: 7083137

Claim:
An apparatus for manufacturing a film, comprising: a roller for taking up variations of tension of a web and detecting a value of the tension; a roller for stretching the web to remove wrinkles therefrom; a roller for positioning the center of said web; a cutting unit having blades for cutting said web into a plurality of webs; and a plurality of winding mechanisms for winding the cut webs around respective winding cores; each of said winding mechanisms having: a holder rotatably mounted on a drive shaft; joined members having joining grooves; and lock means for preventing said winding core from being detached from said holder when the web is wound around the winding core; said winding mechanisms being joined together as a joined array by joining members fitted in said joining grooves, wherein said lock means comprises: stoppers for pressing said winding core outwardly of said holder; and moving means for moving said stoppers in a direction to increase a pressing force applied to said winding core before said web is wound around said winding core, and moving said stoppers in a direction to reduce the pressing force applied to said winding core when the winding core with the web wound therearound is removed from said holder.