| 摘要 |
<p>A press felt for conveying a paper web through a press section of a paper machine and comprising a support fabric (1) formed of a yarn structure and a fibre bat layer (2) formed of fibres and needled to the support fabric at least on one side thereof. The support fabric and the fibre bat layer are filled with a filling material (3) from one surface of the felt to the other so that the felt has an air permeability of less than 0.5 m3 of air/m2 of felt per minute under an air pressure of 100 Pa. The fibre fineness of the fibre bat is preferably at least 6 den. The felt formed by the fibre bat layer and the support fabric is preferably filled from the surface facing the paper with a rubber or resin emulsion so that the filled felt retains at least 45% of its original thickness under a compressive pressure of 10 MPa, in order to avoid blowing and rewetting at a conveying speed of up to 1000 m/min.</p> |
