| 摘要 |
One end portion of an extruded tubular screw or nail anchoring member (12), which is made from plastic material, is tapered by deforming the end portion to the desired shape. The deformation of the end portion is obtained by exposing it to a radial compression and by maintaining the radial compression for a period of time, which is sufficient to obtain a permanent character of the deformation. The compression is preferably obtained by pressing the respective end portion of the tubular member into a tapered passage (15) of a former member, which is preferably in the form of a holder (13). This holder (13) may be adapted to receive a plurality of tubular anchoring members (12) so as to form a sales package or unit. |
