| 摘要 |
A rigid core for a textile yarn package particularly for dyeing is cylindrical in shape, corrugated over the whole outer peripheral surface corresponding to the package, and has a part situated at one end which is provided with a groove, incorporating perforations of a maximum diameter of 2 millimeters, which is intended for forming a yarn reserve, a central part perforated with tapered orifices, wider at the outer surface than the inner, with an angle of taper, relative to the axis of the respective orifice, being between 2 DEG and 80 DEG , preferably between 20 DEG and 70 DEG , and two interengably shaped ends to permit the fluid-tight nesting of the cores on each other during the dyeing. The method of using such a yarn package in which a textured continuous polyester yarn is reeled at a speed of between 400 and 1,000 m/min. |
