MEASURING DEVICE OF THICKNESS OF MULTI POINT OF WEB HAVING SHAFT ROLLER AND CONTROLLING METHOD FOR THE SAME

摘要

PURPOSE: A thickness measuring device with a rotating roll measuring the thickness of several points of a web and a method for controlling the same are provided to effectively measure the web of a film which is sensitive to starches etc. as friction between the device and the web is small. CONSTITUTION: A thickness measuring device with a rotating roll(105) measuring the thickness of several points of a web comprises a first guide(130), a second guide(140), a first measuring sensor module(110), a second measuring sensor module, and a control unit. The first guide is parallel to the rotating roll supporting at a position spaced from the rotating roll and has a longitudinal direction identical to the rotating roll. The second guide is parallel to the rotating roll by being spaced at a position facing the first guide and has the longitudinal direction identical to the rotating roll. The first and second measuring sensor modules are slide-moved by the driving unit along the first and second guides. The control unit controls the driving unit, thereby controlling measurement points of the first and second measuring sensor modules.