Patent ID: 6076718
Filing Date: 2000-06-20
Classification: B29C,B32B,B65H

Abstract:
A method for conveying a continuous synthetic-resin film comprising the steps of:arranging a plurality of roller units in a direction perpendicular to a conveying direction of the continuous film, each of the roller units being constituted by a lower roller equipped with a driver and an upper roller disposed above the lower roller, the roller units sandwiching the continuous film to convey the continuous film;stretching the continuous film to a configuration in which edges of the film are curved with opposite lateral edges having different arc lengths; andcontrolling a rotation speed of each roller unit so that the film is conveyed at a desired speed and in a desired direction by correcting the rotation speed of each lower roller from a preselected value according to a drift amount of the film in a film lateral direction perpendicular to a film conveyance direction.