Patent ID: 7946247
Filing Date: 2011-05-24
Classification: C23C

Abstract:
1. A measurement mechanism for continuously measuring a thickness of a coating layer, provided in an apparatus for forming the coating layer on a conductive elongate base material in a coating treatment base station while the base material is fed, the measurement mechanism comprising: a sensing portion for measuring a capacitance value of the coating layer, the sensing portion having a first part being arranged before a roller of the base station and a second part arranged after the roller of the base station; two pairs of first pinch rollers which sandwich the first part of the sensing portion, the two pairs of first pinch rollers structured to provide a first tension to the base material at the first part of the sensing portion; and two pairs of second pinch rollers which sandwich the second part of the sensing portion, the two pairs of second pinch rollers structured to provide a second tension to the base material at the second part of the sensing portion, wherein each of the first and second tensions is set to be greater than a tension of the base material at the roller of the base station.