| 摘要 |
<p>PCT No. PCT/CA96/00037 Sec. 371 Date Oct. 2, 1996 Sec. 102(e) Date Oct. 2, 1996 PCT Filed Jan. 30, 1996 PCT Pub. No. WO96/23916 PCT Pub. Date Aug. 8, 1996The present invention relates to a method for continuous crimping of a thermoplastic material thread. According to the method, a transporting medium is pressurized, the transporting medium is heated, and a thread is transported, with the transporting medium, though a conveyor duct and out of an outlet opening of the conveyor duct at a transporting speed. The thread is transported from the outlet opening of the conveyor duct to an inlet opening of a stuffer box. The thread is compressed into a plug in the stuffer box by decelerating the thread. The plug is transported from an outlet opening of the stuffer box at a plug speed that is lower than the transporting speed such that the plug is cooled and opened to form a texturized and tensioned thread. At least one parameter of the plug is measured. The at least one measured parameter is compared with a target value of the at least one measured parameter. At least one signal is sent to at least one dependent control circuit when there is a difference between the at least one measured parameter and the target value of the at least one measured parameter. With the at least one dependent control circuit, at least one of a pressure of the transporting medium, a temperature of the transporting medium, and deceleration of the thread in response to the at least one signal is controlled. With at least one independent control circuit, at least one of a pressure of the transporting medium, a temperature of the transporting medium, and deceleration of the thread that are not controlled by the dependent control circuit is controlled. An apparatus for crimping thermoplastic threads is also disclosed.</p> |
