| 摘要 |
The suction roller (100) is hollow and has surface holes connected to an internal suction source. The holes are located in the base of converging suction chambers in the form of channels created between surface ridges. The ridges can run lengthwise along the roller, circumferentially or in a spiral line, and their crests (102) support the fibre mat. The ridges can be triangular in section with rounded crests, or trapezoid, with the crests formed by their smaller edges, and the suction holes can be in rows staggered between adjacent channels. The dimensions of the inner suction zone (107) can be defined by inner radial deflectors (111A, 111B) on either side of a perforated section of the roller's tubular axle (106).
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