| 摘要 |
<p>The invention concerns a method for predicting the tensile-strength ratio of a paper web (W). In the method, a mathematical model is formed between the tensile strength, the web width, and the jet-to-wire ratio. The width of the web is measured by means of edge measurement devices (17, 18), and the mathematical model that was formed is used for predicting the tensile-strength ratio. The invention also concerns a method for predicting the degree of drying of a paper web (W). In the method a mathematical model is formed between the degree of drying of the paper web (W) and the web width. The width of the paper web (W) is measured, and, by using the mathematical model that was formed, the degree of drying of the paper web (W) is determined. The determined values are used for the control of the paper machine.</p> |
