| 摘要 |
A device for preneedling a fibrous web comprising at least one needle board reciprocatingly movable in a stitching direction, whose needles are formed with barbs 13 for entraining the fibres of the web, and a web guide which consists of a stitch base opposite the needle board and a stripper between the stitch base and the needle board. The needles are arranged in two portions, those on the supply side of the needle board and those on the remainder of the needle board. The needles on the supply side portion have either a denser distribution or coarser barbs than the remaining needles. Also the barbs of the needles on the supply side portion lie within the contour 14 of the working part of the needles. In one embodiment the supply side portion does not extend over more than one third, preferably not more than one quarter of the needle board area. |
