JPS6317131B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing special bulky yarn by providing a fluid bulking nozzle on a false twisting machine.

Hitherto, various bulky textured yarns have been developed by false twisting, but the basic aim is to impart bulkiness, stretchability, and torque through three-dimensional crimp. On the other hand, bulky yarn processed by fluid processing, especially taslan processing, etc., is also well known, and it is known that the basic feature thereof is to provide bulkiness by providing loops, resulting in non-stretch and non-torque. Furthermore, attempts have been made to achieve bulkiness through three-dimensional crimp and loops by combining these conventional bulking techniques. For example, there is a method of false twisting using fluid-processed yarn, and although it is possible to give bulkiness through three-dimensional crimp and loops, it is possible to perform fluid processing and false-twisting separately. Therefore, it is necessary to set a high air pressure when performing fluid processing, which is a factor in increasing costs.
Furthermore, since conventional fluid processing only pursues bulkiness by creating loops, there is little change in the form of the yarn, and even if it is false-twisted, the form is monotonous. Ta.

The present invention provides a method for manufacturing a special bulky processed yarn that reduces the processing cost increase in conventional methods and can also change the yarn form and hue.The gist of the invention is as follows: When the filament yarn is subjected to fluid bulking processing at different feeding rates to the fluid bulking nozzle and then being false twisted continuously without being wound once, the feeding rate is set as the feeding rate of the filament yarn with a large feeding rate. The present invention provides a method for producing a special bulky textured yarn, which is characterized by arbitrarily varying the amount while maintaining the condition that the amount is large.

The present invention will be explained in more detail with reference to the drawings below. Fig. 1 is a side view showing an example of an apparatus used for carrying out the present invention, in which a filament yarn 1 is subjected to fluid bulking while maintaining a constant tension. At this time, it is supplied to the nozzle 5, but at this time, as shown in the same figure, there is a passive supply method using tension regulation by a magnetic tensor 3 or a bartensor, or an active supply method using a feed roller 3' as shown in FIG. Either is fine.

The yarn feeding tension of the filament yarn 1 to the nozzle 5 is 8 gr or more and 16 gr or less, preferably 10 gr or more14
It is constant within gr. The yarn feeding tension to nozzle 5 is
If it exceeds 16gr, the degree of entanglement of filament yarn 1 in the nozzle will be small, and the degree of entanglement of filament yarn 1 and 2 will be small.
On the other hand, if the tension is less than 8 gr, the twisting tension will be low and the processing stability will be reduced when the bulky yarn after exiting the nozzle is continuously twisted, heat-set and untwisted.

The excessive supply of the filament yarn 2 to the nozzle 5 can be freely changed depending on the desired bulky yarn, but it is preferably 10% or more and 90% or less.
12% or more and 80% or less. If the excess supply is less than 10%, the yarn feeding state will be the same as that of filament yarn 1, and there will be little change in shape. Moreover, if the amount exceeds 90%, the nozzle suction ability and spinner passage performance will be affected, resulting in unstable processing. Feed the filament yarns 1 and 2 to the nozzle 5,
The filament yarns 1 and 2 are mixed and entangled, and a loop is formed by the filament 2 to form a bulky yarn. The bulky yarn is then continuously heated by the heater 6.
The fibers are introduced into the fabric and subjected to twisting, heat fixing, and untwisting using a spinner 7 to impart three-dimensional crimp, thereby generating bulkiness due to the loops and three-dimensional crimp, and stretchability due to the three-dimensional crimp. Twisting, heat setting and untwisting are the same as the normal false twisting process.

Since the method of the present invention continuously performs bulking and false twisting by generating loops with fluid, the air pressure during fluid processing can be lower than when fluid processing and bulking are performed individually.

When performing the conventional individual processes, if the filament yarns 1 and 2 are not highly bundled during fluid processing, the threads may not be released from the paper tube during false twisting, and the false twisting process must be performed continuously. In order to achieve this goal, it was necessary to increase the cohesiveness of filament yarns 1 and 2.

However, in the present invention, fluid processing and false twisting processing are carried out continuously, so even if the filament yarns 1 and 2 do not have very high cohesiveness, when they come out of the nozzle 5, they immediately enter the false twisting machine. Since the twist configuration adds convergence, stable false twist processing becomes possible. Therefore, the air pressure can be set much lower than in the conventional method, making it possible to reduce processing costs.

Furthermore, by varying the rate at which the filament yarn 2 is supplied to the nozzle 5, the yarn form is changed. The feeding rate of the filament yarn 2 to the nozzle 5 can be easily varied by varying the rotational speed of the feed roller 4. Specifically, this can be done by using a tapered roller as the feed roller 4 and traversing the filament yarn 2, but this method is not restricted in any way. In addition, by using filament yarns 1 and 2 with different dyeability, a uniform bulky yarn with a blended yarn tone can be achieved.Furthermore, by varying the feeding rate of filament yarn 2 to the nozzle, the yarn shape can be changed simultaneously. The hue of filament 1 appears strongly in the thin part, and the hue of filament 2 appears strongly in the thick part, making it possible to make the design even stronger.

As described above, the present invention provides a characteristic bulky textured yarn that could not be obtained in the past, and can reduce processing costs and provide design in form and hue, and its industrial value is extremely high. It's large.

This book shows examples of the invention.

Example Filament yarn 1 is polyester filament yarn SD75d/36f (dispersion dyeable), filament 2
Polyester filament yarn SD75d/24f (cationic dyeable) was used and processed under the following conditions.

Nozzle type: Taslan type bulking nozzle Air pressure: 2.8Kg/ ^cm2 Yarn feeding method: Fig. 2 method Feed roller 4
was used as a tapered roller.

Yarn feeding conditions: Feeding rate of filament yarn 1 to the nozzle: +8% (Yam feeding tension 10 g) Feeding rate of filament yarn 2 to the nozzle: +
Supply fluctuating between 15% and +48% False twisting conditions: Spindle rotation speed: 19.8×10 ⁴ rpm Number of twists: 1650T/MZ Temperature: 220℃ Yarn speed: 120m/min When processing was carried out under the above conditions, the third With the shape shown in the figure, the thick part of the thread had a cationic hue, and the thin part had a strong dispersed hue. When fluid processing and false twisting were performed separately as in the past, the processing pressure during fluid processing (100 m/min) required 4.5 Kg/cm ² .

[Brief explanation of the drawing]

Figures 1 and 2 are side views showing various examples of devices used to carry out the present invention, and Figure 3 is a side view of processed yarn obtained by the present invention. 1 and 2 are filament yarns, 3 is a magnet tensor, 3' and 4 are feed rollers, 5 is a fluid bulking nozzle, 6 is a heater, 7 is a spinner,
8 is a delivery roller.

Claims (1)

[Claims] 1. When two filament yarns are subjected to fluid bulking processing at the same time by different feeding rates to the fluid bulking nozzle, and then are subjected to continuous false twisting without being wound once, the feeding rate of the filament yarn with a large feeding rate is , a method for producing special bulky processed yarn characterized by arbitrarily varying the supply rate while maintaining the condition of high supply rate.