| 摘要 |
<p>The invention relates to an apparatus and a method in connection with a headbox (100) of a paper machine of the like. The stock flow is controlled by means of a film matrix (10b) by feeding to the film matrix (10b) a voltage signal whose frequency and/or amplitude is regulated. By means of the film matrix (10b) turbulence is generated in the stock flow or by means of the film matrix (10b) vibration is generated in the stock flow, which vibration damps the pressure variations of the stock flow.</p> |
