| 摘要 |
The invention relates to a previously known water-permeable drum for hydrodynamically needling webs of textile materials such as nonwovens, tissue, cloth, knitted fabrics, or similar in order to reinforce and structure said textile materials and/or refine the surface thereof. Said intrinsically stable drum is provided with apertures and a tubular sieve-type cloth or knitted fabric which is made of metal wires, is pulled across the outer circumference thereof, and is fixed to the face of the drum. In order to prevent creases from forming across the area of the sieve-type cloth when the drum is used according to the specifications, the sieve-type cloth or knitted fabric is provided with a coating that stabilizes the intersections of the wires. Said coating should be a galvanically applied coating, e.g. a nickel plating.
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