JPS5876536A - Stretchable spun like yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The spun-like false twisted processed yarn manufactured by the present invention is imparted with stretch properties to form a #r-regular processed yarn,]l! κ
More specifically, it relates to modified JiLK, which is a two-layer structured yarn in which K1a-attached yarns are alternately twisted around a core yarn.

Conventionally, nine alternately twisted two-layer structure yarns were made using the false ridge process, and the following κ
Manufactured by the method described.

In other words, when two or more types of yarns with different elongations are fed to the supply roller K in a aligned state and twisted in a false twist/dol κ direction, the yarns with lower elongation will not elongate κ, so the yarn The threads, which form the core of life and have great elongation, are twisted so that the outer layer of the threads is twisted. When this twisted yarn state is heat-set and then scale-twisted, the yarn with a small elongation O becomes the core yarn, and the yarn with a large elongation O of 1k is alternately twisted with a twisted yarn κ, resulting in a 92-layer structure winding. A shrunken yarn is obtained.

《Banichi No. 1849-'1244N, JP-A-49-476
See specification No. 44. On the other hand, as another method for producing a two-layered yarn having the above-mentioned configuration, a twisted (false twisted) state KTo is produced using a false twisting spindle κ.
It is also well known to use the rotating torque of the core yarn to overtweed the winding yarn. (For example, see TF41'A Publication No. 45-28018.) In the two-layer structured yarn i obtained by these methods, the wound yarn is generally wound around the circumference of the core yarn in an alternately twisted manner. Therefore, its ms structure has the advantage of improving the slimy and bulky feeling, which are the drawbacks of ordinary coolie-processed yarn weaving. Because of this, the core yarn could not be crimped and it lacked the elasticity K of ordinary woolly textured yarns.

The purpose of the present invention is to overcome the drawback of poor elasticity of the conventional alternately twisted two-layer yarn as described above, and to provide a spun 2-layer yarn with a double-layered structure that has elasticity (stretchability). There is κ.

In order to achieve the above object, the inventors of the present invention investigated various aspects of κ and found that, since the core yarn is more tightly tightened than the winding yarn κ, the conventional ms force of the core yarn cannot overcome the tightening force κ. Confirm that crimp appears and the rice does not appear. Therefore, we hypothesized that if we use a core yarn with a larger curling force L1 than the previous one, the core yarn would also be crimped, and the crimping would give rise to stretchability, and we further investigated this. As I continued to develop my skills, I learned that side-bined composite yarns of polybuterene terephthalate and polyethylene terephthalate were useful as core yarns with these characteristics.

That is, the present invention is a false-twisted crimped yarn made of two types of filament yarns, one of which is used as a core yarn, and the Ojll! ) The filament yarn of K Yukata is wound, and a part of the filament composing the wound yarn is randomly mixed and intertwined with the filament of the core, and the crimped yarn as a whole is wrapped around the core yarn. A stretch band characterized in that the filament constituting the core is made of a polyethylene/terephthalate polymer and a polyethylene terephthalate polymer and a polyethylene terephthalate heavy metal body in a double-layer structure yarn K wound in an alternately reversed manner. It is a like-processed yarn.

Hereinafter, this book IjhIjIl will be explained in detail.

As already mentioned, in the manufacturing process of conventional two-layer spunlike textured yarn, the other yarn under low tension wraps around the core yarn under high tension during false twisting, resulting in a wound yarn. Since it is covered in a tight state, even after false twisting, the conventional core yarn, which has a small crimp force, does not develop crimp, and therefore, stretchability due to crimp κ cannot be expected. Therefore, even if such processed yarn has a spun-like texture, it lacks stretch when used in delicate fabrics, and when used for clothing, it may cause a feeling of pressure at the elbows and knees. It seems to occur. There is a strong need for improvement in terms of quality and performance, especially in sports clothing. Conventionally, in order to compensate for the drawbacks of this double-layered yarn, good quality yarns have been used, such as by interweaving with stretchy woolly processed yarns, or by covering with spandex. There are other problems such as the spun-like texture of the two-skinned yarn is reduced by half, and the price is high and labor is required.

In this regard, according to the studies of the present inventors, in order to solve this problem, the core yarn is fastened to the winding yarn of the double-layered winding yarn, and even under nine conditions, the core yarn remains intact. It became clear that the winding force must overcome the tightening force κ of the winding yarn to produce crimp.9.

Polypterene terephthalate polymer and Borie Tele 7 Tere 7 are used for this core thread as materials with a large crimp-producing force.
It has been discovered that when a compound laminated material of a tallate polymer is used in a nitride layer, a satisfactory threading effect can be obtained without impairing the snow-like fit. The intrinsic viscosity [η] of the polypterene tre-7 tallate polymer of the composite yarn used in this core yarn κ is preferably α65 or more and α9 or less, while [η] of the polytelene tele-7 tallate polymer is α3s or more and α5 or less. Preferable.

The larger the difference between these two, the better the desired stretchability. Also, the composite ratio a of the two
3/7 to 7/3 is suitable.

Furthermore, as for the multiple warehouse method, the side-by-side type O has better stretchability, but the eccentric sheathed core type S
Stretch performance of t occurs.

Hereinafter, an example of obtaining a spunlike textured yarn of the present invention using the above-mentioned composite yarn will be explained with reference to the drawings.

In FIG. 1, the above-mentioned gold thread (filament thread) 1 and polyethylene terephthalate filament thread 2 having a higher elongation are combined in a guide 3 and then passed through tension adjusting devices 4, 7 and an eid roller 5 to be mixed. - Supplied to the air injection nozzle 6 for entangling, with a total of 30 pieces/. ．． It is considered as an interlaced yarn having the above interlacing points.

Next, this interlaced yarn is supplied to the stretching and false twisting zone by the first delivery roller 7, passes through the heater 8 and the false twisting tool 9, and is taken up by the second delivery roller 10.
It is rolled into cheese 11.

As shown in FIG. 2, the processed yarn thus obtained has the form of a 92-layer structured yarn in which the composite yarn is arranged as the core yarn 12 and the polyethylene terephthalate yarn is arranged as the wrapped yarn 13.

What is important here is that if the core yarn of the processed yarn expands and contracts, or if it is repeatedly damaged, the core yarn and the alternately twisted winding yarn will separate, which may cause practical problems. It is necessary to add entanglement and stabilize the thread structure. The interlacing treatment may be applied before or after the false twisting process, but in general, a more stable structure can be obtained if it is applied before the false twisting process. preferable.

Peng Liang (Peng Liang) said that there are many entanglements that impart κ to the raw yarn.When a general κ entanglement treatment is applied, the entangled portion and the spread portion become a repeating unit to form an entangled yarn. In order to do this, it is preferable to give κ such that the length of the interlaced part is long and the length of the open weave part is short. It is best to uniformly impart κ to the entire yarn, but it is better if the number of entanglements is 40 or more per M, preferably 50 or more per M, from the perspective of the soil for use in baking. ? A desirable textured yarn can be obtained.

The degree of entanglement can be measured as follows.

In other words, when the entangled raw yarn is floated in water in a container, the unentangled part opens to a thickness several times or more thicker, while the end point of the interlace does not open. Read with your eyes.

Furthermore, although a line or interlace processing nozzle is suitable as the entangling processing nozzle, a taslan nozzle may also be used. In terms of process, it may be wound once after interlace processing, or it may be simultaneously stretched and false-twisted without winding. Further, an external friction false-twisting device or a belt false-twisting method, which has a feeding effect, is more suitable than using a false-twisting device company's swinner.

By the way, the composite yarn of polybutylene tere-7 tallate and polyethylene terephthalate used as the core yarn should preferably have an elongation of 80% or more, and when simultaneously grinding and false twisting at a stretching ratio of 60 to BO% Og of the elongation, the desired result can be obtained. characteristics are obtained. If the abrasive elongation ratio is low, the stretchability of the woven fabric becomes unsatisfactory, and if it is too high, processing stability cannot be obtained and yarn breakage is likely to occur.

On the other hand, the yarn to be used for the winding yarn κ is preferably polyethylene terephthalate or the like, and the elongation of the raw yarn must be 100% or more higher than the core yarn elongation, particularly preferably 150% or more.

The core yarn K wire in the present invention is directed to polybutylene tere-7 tallate and polyethylene terephthalate, but these may be copolymerized with a third component at a ratio of less than Is mole, or may contain additives such as matting agents, coloring agents, and refueling agents. Further, the cross-sectional shape of the filament of the undrawn yarn and the partially oriented yarn, the amount of the above-mentioned additives, etc. are not particularly determined. In addition, in this case, the denier of ungrinded yarn and partially oriented yarn should be selected according to the purpose K, and the denier ratio of (wound yarn/core yarn) in general K total denier K should be a7 or more. It is preferable that both the wrapped yarn and the core yarn De are K50 to 300 de. It is particularly preferable that the wrapped yarn single fiber De after processing is 3 de or less, and the core yarn single fiber De is more than ads. Provides texture and stretch.

This combination of yarns makes it possible to have bulkiness, a soft feel on the surface, and resilience, as well as sufficient stretch performance.

As described above, according to the present invention, the improved nine-alternately twisted two-layer structure yarn can provide a spun-like fiber striped material having appropriate twist texture, fullness, flexibility, and sufficient stretch. is obtained.

The present invention will be explained below using Example κ.

Example polyethylene terephthalate with intrinsic viscosity [η] ÷ a78 and polyethylene terephthalate with [η] = aSS 5:
The composite yarn was spun into a side-bined yarn at a rate of 5:5. The spinning speed at this time was 220de/48fi at 2500m+/min.
1. Partially oriented yarn POY of stretched If148- was obtained. on the other hand,
[η] = α64 polyethylene terephthalate at a spinning speed of 1
At 400 m/min, ungrinded thread with an elongation of 345 whispers was obtained at 22 Odo/72 ft1.

Pull these two! Align the threads, use the Kigozu false twister, double the threads with the guide 3, and then set the tension adjustment device 4, feed p-
2-5, an interlace nozzle 6K for interlacing fibers is supplied, and an overfeed rate of 1 and a pneumatic pressure of 4-1 are applied to give 58 entanglements/hole. [175°C, friction false twisting device 90 surface peripheral speed 65
G-/min, Hz delivery peri El-9-10 speed 35oi
The cheese was simultaneously stretched and false-twisted under the conditions of , and then rolled and piled as Cheese 11.

The resulting yarn was a two-layer structured yarn as shown in Figure 2.

On the other hand, as a comparative example, the following experiment was conducted.

Polyethylene tere-7 tallate with an intrinsic viscosity [η] - α●3 was spun at a spinning speed of 1100 m+/min, and the elongation was 111 S%.
So 225 del 80 thread S filament and spinning speed 1! G
The obtained polyester filament yarn (225 da/ftls) with an elongation of 360 cm was obtained by spinning at os/min, and the yarn was intertwined with the yarn under the same conditions as in the drawing of Sjll.
9.Performing the platform and grinding false twisting process. The obtained processed yarn has a two-layer structure as shown in Fig. 2 of the irises, and has a round shape, as in the example. The stretchability of the processed yarns of these Examples and Comparative Examples was evaluated by making them into the following plain woven fabrics.

The root polyester 150de/4g, 1 heater wool 9-processed yarn is made of 2 pieces of 45 feathers for the warp, the examined yarn is added for the weft, and a plain woven fabric is made with 65 mesh. Normal relaxation, preset (i.ao℃ x 45 seconds) 130℃ high pressure dyeing finishing set (160℃ x 45 seconds) Step 1.

Note that finishing resin processing was not performed.

This plain woven fabric has a width of 5 in the warp direction and an effective length of κ in the weft direction of 2G.
．． Assume that the length of the weight of L5- after adding fil is 1. Furthermore, after one minute of loading, a length of t8 was scooped out, and the elongation rate and recovery rate were calculated using the following formula.

From the above results, the effect of the side-bined composite gold thread of polybutylene terephthalate and polyethylene terephthalate of the present invention is clearly recognized in the elongation rate and recovery rate.

Also, the texture is span-like.

[Brief explanation of drawings]

Fig. 2 is a schematic view showing one embodiment of the apparatus for manufacturing the processed yarn of the present invention, and Fig. 2 is an enlarged drawing of the yarn structure of the processed yarn of the present invention. L2... Yarn 3... Guide 4... Tension device S...
・Feed draw 26...Interlace nozzle 7...
IIIL1 delivery p-28... heater 9...
False twisting tool 10... Second delivery roller 11... Winding thread 12... Core yarn 13... Winding yarn 203

Claims (1)

[Claims] (1)! A false twisted crimped yarn made of 11 filament yarns κ, one of which is used as a core yarn, and the other filament system 1 is wound around the core yarn, and some of the filaments constituting the wound yarn are wound around the core yarn. 7 I2ment and random Kffi combination,
In a two-layer structure yarn in which the crimped yarn as a whole is wound around the core yarn in an alternating inversion pattern, the filaments constituting the core are made of polypterene terephthalate polymer,
A stretchy spun-like processed yarn characterized by being composed of a side-by-side type composite yarn of polyethylene tele-7 tallate polymer.