| 摘要 |
The first aspect of the invention relates to a metallic card wire (200) that is having an elongated rib portion and teeth. The teeth are comprising a front segment (220), a top segment (240) and a back segment (260). The front segment (220) comprises the connection of the tooth from the elongated rib portion and the front segment (220) includes a tip (230) which is actively taking fibres in carding. The top segment (240) is comprising at least one hunch (270) after the tip (230) in the direction of the back segment (260). If more than one hunch is present the first hunch is the hunch positioned closest to the tip; if only one hunch is present this hunch is the first hunch. The first hunch has in the hunch a minimum radius of curvature of more than 0.1 mm. The deepest point of the valley (275) between the tip (230) and the first hunch (270) has a distance from the tip in the direction perpendicular to the length of the card wire of minimum 0.03 mm. The highest point - or the middle of the zone that is highest - of at least one of the hunches lies within the two fictitious lines through the tip of the card wire that make an angle of -5 degrees and of +3 degrees with the longitudinal direction of the card wire. The back segment (260) is forming the connection of the top segment towards the elongated rib portion and the front segment (220) of the next tooth. The second aspect of the invention relates to a similar card wire as in the first aspect of the inventions, but with one or more flattened hunches (642, 644). The depth of the valley between tip and first flattened hunch (642) is preferably less than 0.15 mm. Card wires according to the first or two the second aspect of the invention can e.g. be used for cylinder and for lickerin rollers. |
