SU1761826A1 - Method of obtaining combined thread - Google Patents

Description

Frequency perturbations from the vibrator, which uses a piezoelectric transducer, Thus, we have a linear sequence of droplets with the same diameter and distances between them. A flight through a charging device 9 located in the zone of detachment of a drop 8 from a jet of liquid 7, each drop receives an electric charge of one or another polarity equal to qK

2UzK0Ј0w

 h-yr, where V3 is the voltage amplitude at the charging device, Ј0 is electrically constant, dk is the droplet diameter, hi is the radius of the hole in the charging device. As shown by experimental studies, a fixed voltage value V3 corresponds to a fixed value of the charge drop qk, as shown in FIG. 3

The charged drops 8 are directed onto a rod-shaped multi-filament yarn having a high electrification. At the place of deposition of charge, an electrified area in the form of a balloon is formed on it due to a uniform divergence of the filaments under the action of Coulomb electrostatic repulsive forces. At this point, at least one surge thread, the passage through the feed mechanism 13 is directed to this place of the core thread. Next, the surge thread and the core thread are connected by the false twist method. The control device 16 controls the diameter of the droplets, the magnitude and sign of the charge imparted by the core thread, providing control signals to the vibrator 6 and the charging device 9.

Improving the quality of the combined yarns obtained is achieved due to the fact that in the place where the surge thread is supplied to the rod thread, an area is formed with a strictly ordered arrangement of the filaments of the rod thread in the form of an electrified balloon. Due to this, a more uniform interlacing of core and surge threads is obtained. It is possible to obtain combined yarns with predetermined qualitative and quantitative indicators (thickening, with the inclusion of various components as surge

threads, pile, etc.). This is achieved due to the strictly controlled dosing of electric charges to predetermined areas of the core thread and, thereby, changing the magnitude and location of

electrified balloon.

The expansion of the field of application of the combined yarn is due to the possibility of using yarns of various materials, different

thickness. The use of a lubricating or fixing substance as a working fluid applied to the threads allows one to solve the problems of lubricating and fixing the threads.

Automation of the process of obtaining

The combined filament is achieved by microcomputer control and automatic control of the amount and location of electrical charges on the core filament.

Claims (1)

Claims of the method of producing a combined yarn consisting in connecting in predetermined areas a multifilament rod and at least one surge thread with its subsequent fixing on the rod thread, characterized in that, in order to improve the quality, previously on the rod thread on the sections combining it with a surge thread applies a predetermined amount of unipolarly charged liquid droplets of the same diameter. 200 fig 2 #,