roll 15 3 and led to the transfer fabric 16 which transports it to the dryer fabric 17 of the horizontal impingement dryer 20 by means of the transfer suction roll 15 4 the paper web travels on top of the dryer fabric 17 from below the blowing unit 20 1 whereat it is subjected to a strong heating effect in a short blowing zone drying occurs relatively little but the web warms up and its top surface layer dries slightly this is however significant as regards the runnability at the same time the moisture gradient in the thickness direction of the web becomes strongly growing towards the bottom surface inside the dryer fabric loop 17 there are vacuum boxes 20 3 and support rolls 20 2 for keeping the web attached to the said fabric 17 after the horizontal impingement dryer 20 the paper web is transferred from the dryer fabric 17 after the vacuum roll 17 1 onto the dryer fabric 14 2 of the first dryer cylinder group 14 this same dryer fabric 14 2 is also used by the vertical impingement dryer 21 in a method known as such the paper web is transferred to the dryer fabric 14 2 by means of the topmost roll 21 3 functioning as a vacuum roll suction roll or vac roll of the vertical impingement dryer 21 the roll 21 3 has a fabric wrap within an area of 3 u00b0 to 10 u00b0 the dryer fabric 14 2 is supported in the straight section forming the blowing surface by several small support rolls 21 5 between which there are blow boxes 21 6 providing aspiration for creating.