METHOD OF CONTROLLING CONVEYANCE OF WEB, SLIP AMOUNT MEASURING MEANS, AND CONVEYANCE CONTROL DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a method of controlling the conveyance of a web capable of reducing the displacement of the lateral position of the web by accurately controlling the slip of the web, a slip amount measuring means, and a conveyance control device. PSOLUTION: This method of controlling the conveyance of a web comprises a web measuring step of measuring the conveying speed V and the tension T of the web 2 under conveyance, a slip amount calculation step of calculating the slip amount W of the web 2 from a guide roll 14 from the conveying speed V and the tension T of the web 2 measured in the web measuring step, and a web control step of so controlling the tension of the web 2 under conveyance that the slip amount W of the web 2 from the guide roll 14 calculated in the slip amount calculation step is equal to a preset target slip amount W1. PCOPYRIGHT: (C)2009,JPO&INPIT