Patent ID: 6188077
Filing Date: 2001-02-13
Classification: G01N

Abstract:
A method of analyzing at least one property of a paper web (7) manufactured in a defined paper machine from which jumbo rolls (5) are supplied, characterized in that a jumbo roll (5) from said paper machine is placed in a measuring machine,that the paper web (7) is conveyed from an unreeling section (1) for the jumbo roll (5), through a measuring section (3) to a reeling section (2) for winding the paper web (7) to form a new reel (11),that a first measuring sequence is performed which comprises feeding the paper web (7) in a plurality of steps having the same predetermined length and measuring said property in the measuring section (3), when the paper web (7) is stationary, within a web-width measuring area which in the machine direction corresponds, or substantially corresponds to said step length, by scanning traversing a measuring sensor, in order to measure said property from one edge of the paper web (7) to the other within said measuring area, andthat the measured values recorded by the measuring sensor are transmitted to a computer unit for processing and conversion of the measured values to a visual form which indicates variations of the property within an area of the paper web (7) defined by said steps.