JPS61266628A - Production of fancy 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 <Industrial Application Field> The present invention relates to a method for producing spun-like fancy yarn that can improve the volume and warm feel of a fabric and impart novel surface changes.

<Prior art> It is well known that fluid treatment is applied to multifilament yarn to generate fuzz due to loops and slack on the yarn surface to give it a spun-like texture. Processed yarns are widely used in the clothing field.

<Problems to be solved by the invention> However, in recent years, with the diversification of consumer tastes and the rise in luxury, there has been a strong demand for a texture with a varied appearance and even a sense of volume, rather than a monotonous appearance. However, fabrics obtained from yarns with many loops and slacks on the yarn surface have an improved sense of volume, but on the other hand, they have a strong so-called bursy feel, which means they have a crunchy texture.
It was far from the desired soft voluminous feel.

Moreover, since the multifilament yarn is uniform in the longitudinal direction, the monotony of the appearance of the fabric obtained from it is disliked, and the above-mentioned attempts to obtain an appearance with irregularities and a natural pattern pattern similar to those of fabric with natural spun yarn are disliked. The request could not be met.

The present invention is intended to eliminate the drawbacks of conventional processed yarns, and the purpose is to create a soft, voluminous and warm feel similar to that of multifilament yarns and natural spun yarns, and to bring graceful changes to fabrics. The present invention provides a method for making fungee yarns that can be applied.

<Means for solving the problem> That is, the present invention overfeeds multifilament yarn and performs fluid treatment to generate a large number of loops, entanglements, or slack, and then intermittent false twisting operation via a take-up roller. This is a method for producing fancy yarn, which is characterized in that heated bundled portions and unheated bulky portions are alternately formed in the longitudinal direction of the multifilament yarn by S twist or Z twist.

The method of the present invention will be further explained in detail below.

First, in the method of the present invention, multifilament yarn is over-fed and subjected to fluid treatment to generate a large number of loops, entanglements, or slacks in the yarn. In this case, if the overfeed rate is too low, it becomes difficult to form loops or slacks, and if it is too high, there will be less entanglement or lumpy neps will be more likely to occur, which may reduce the quality of the woven or knitted fabric.

Therefore, the overfeed rate is preferably 5 to 100%.

Further, the fluid treatment is performed by injecting a fluid such as compressed air using an injection nozzle such as an interlaced nozzle or a taslan nozzle, thereby making it possible to impart loops and slack l to the yarn.

Note that if a multifilament yarn of different color or shrinkage is used as the multifilament yarn to be subjected to the fluid treatment, a special pattern effect or texture effect can be obtained on the resulting fabric, and the effects of the present invention can be further enhanced.

In addition, when using two or more multifilament yarns as a supply system and performing fluid treatment with a difference in overfeed rate of at least two multifilament yarns of 15% or more, use a multifilament yarn with a small overfeed rate as the core. The multifilament yarn with a high oversupply rate becomes a bulky yarn with loops and slack in a core-sheath structure, and a fancy yarn with excellent bulking and surface effects can be obtained. In this case, if the oversupply rate of the multifilament yarn that will be the core is too low, the entanglement with the multifilament yarn that will be the sheath will be reduced, so the oversupply rate of the multifilament yarn that will be the core should be 5% or more. is preferable; on the other hand, if the oversupply rate of the multifilament yarn that will become the sheath is too high, the entanglement will decrease, so the oversupply rate of the multifilament yarn that will be the sheath is 100.
% or less.

Next, the multifilament yarn subjected to the fluid treatment is
A heating operation is performed intermittently via a take-up roller to alternately form heated bundled portions that are bundled by S twist or Zr$ and unheated bulky portions in the longitudinal direction of the multifilament yarn. That is, in the method of the present invention, continuous to fluid treatment, intermittent false-twisting operations are performed by utilizing the false-twisting transient phenomenon in order to leave the twist in the multifilament yarn having fuzz such as loops and sag. In order to prevent the false twist from reaching the injection nozzle, it is necessary to prevent the twist from propagating using a take-up roller or the like. in this case.

If the false twist is traced back into the injection nozzle, the opening action of the injection nozzle is inhibited, and fuzz such as loops and sag cannot be generated, making it impossible to achieve the object of the present invention.

In this way, the method of the present invention performs intermittent false-twisting operations to form alternating twists in the yarn due to the false-twisting transient phenomenon. A twist in the direction is formed in the yarn, and then the transient state shifts to a steady state (the number of false twisting heating and the number of untwisting become equal), and the yarn becomes untwisted. Next, when the false-twisting operation is stopped, the yarn that was in the false-twisting heating region at the time of stopping passes through the twisting device as it is, and a twist in the false-twisting heating direction is formed in the yarn. Then, after the twist in the false twist heating direction is removed.

The yarn is non-twisted. Note that in the above case, the intermittent false-twisting operation I is heating in only one direction, and heating-stop is repeated as one cycle, but in the intermittent false-twisting operation, the heating direction is S heating - Z heating in one cycle. Good too. Further, intermittent false-twisting operations may be performed by arbitrarily combining S heating, 2 heating, and stopping. In any of these cases, the principle of adding twist to the yarn is the same as the above-mentioned case of performing intermittent false twisting by heating in only one direction, and it is necessary to leave enough twist to bundle the yarn. I can do it.

In this way, by adding a twist in the false twist heating direction and a twist in the opposite direction to the yarn having uniform loops and slack f, the overroll loop of the yarn is reduced. It can be a fancy yarn having alternating bulky parts with fluff.

The length and frequency of the converging portion and the bulky portion of the yarn are determined by the intermittent false twisting operation time, the length of stop time, the frequency, and the yarn speed. Intermittent false twisting operations can be arbitrarily set and changed as appropriate using .

As the twisting device used for the intermittent false-twisting operation, a so-called air false-twisting nozzle using an air swirling flow is preferable because the intermittent false-twisting operation can be easily and instantaneously performed and is durable.

In addition, in the method of the present invention, a thermoplastic synthetic fiber multifilament yarn is used as the multifilament yarn, and a heating device is provided upstream of the twisting device to heat-treat the thermoplastic multifilament yarn while intermittent temporary heating is provided. Twisting can also be applied, and in this case, in addition to the twisting effect, a heat shrinkage effect and a tightening effect due to heating, heat setting, and untwisting are added, synergistically increasing the focusing effect and texture effect. As a result, a structurally stable fancy yarn can be obtained.

Normally, fluff generated by fluid treatment protrudes perpendicularly to the yarn axis, and when this is woven into fabric, it gives a strong percy feel. Since it is a peach that undergoes a false twisting operation, alternating twists are added due to the transient phenomenon of false twisting, and the overroll loops, which are fluff that protrudes perpendicularly to the yarn axis, can be suppressed and reduced. The term "reduced" refers to curling of the overroll loop, shrinkage along the twisting direction, or shrinkage due to heating. The apparent diameter of the yarn decreases due to the reduction of this overroll loop, but
It is thought that the reduction of the overroll loops substantially contributes to the thickness of the fabric obtained, and conversely, it is imparted with elasticity and thickness, and the polynium feel of the fabric is increased. As mentioned above, when using a 20 or more i multifilament yarn with an overfeed rate difference of 15% or more as a supply system, the overroll loop diameter (DL) is determined by the axial interlacing diameter (OC) as shown in Figure 2.
), therefore, the unevenness of the yarn becomes remarkable, the change in the surface of the fabric becomes noticeable, and the elasticity, volume and warmth of the fabric are significantly improved.

FIG. 3 is a schematic external view showing an example of the fancy yarn produced by the method of the present invention, in which (A) shows a threaded part having a twist in the direction opposite to the direction of heating for false twisting, and (C) shows a part twisted in the direction of heating for false twisting. The untwisted part (A) and the untwisted part (C) are formed alternately along the longitudinal direction of the yarn, and the untwisted part (8) and the untwisted part (8) 14! is formed between the over-untwisted part (A) and the untwisted part (C) in a steady state of false twisting. Non-twisted portions (B) that exhibit shrinkage and non-twisted portions (B') that are not subjected to any twisting action are alternately formed. These untwisted parts (B)
, (B'') is not subjected to the focusing action, so the overroll loop (L2) becomes a large part of the yarn, and the yarn as a whole is rich in irregularities.

FIG. 1 is a process schematic diagram showing an example of the manufacturing process of the method of the present invention, in which the multifilament yarn (F) pulled out from the burn (1) passes through the supply roller (2) and then passes through the supply roller (
2) and the first delivery roller (4), and fluid treatment is performed by the jet nozzle (3), causing yarn loops and fluff due to slack.

1st Deliberiro", 1-La (4) ・P' Bond C twisting device (5) B, 2 more intermittent (1,' False twisting operation is applied 'i',, "IF Liberi 1 "R-n ((i) Wind up with the Apricot Sutra e t',, I-'7f7) Il, □ from Baranoa-ji (8) et al." Winding C "11 degrees."

h invention
, Pie: Main/1・Thread, ′j7° is Polysuth,
Thermoplastic bamboo synthetic fibers such as Toru, Boria, Mido; Pa? Re-4 of le 1000 filament yarn, lehn II no, bouffe etc.
1゛Fiber, "le pu", noishi, men I, thread, etc. 9
Ordinary drawn yarn 1. tl, :ys High speed spinning j, S) Including highly oriented non-IB drawn yarn 1').

〈Example〉) Hereinafter, the present invention will be put into practice; Roadside (,:,!,) Specific (・: Two explanations) 11. Example poly, varnish ~ dry fillet yarn 1.00 d/
48f (yarn 1) and polyvarnish 1 roe, cell 3, insiment yarn 75d/48f (yarn IN) 4. '；、
J These different supplies 11- Feed from the la and doubling yarn 1,
. In Table 1 and 2, the air jet nozzle 42 is used for the journey to the fluid treatment, followed by the first delivery... +: J'/';: Heat treatment with heating equipment 1 (condensed air G, - using rotating nozzle 4) (,-,',,',',%fl・1'・;・蓓- Human power 11, ]11.・″・fr::r HI:・′11
``2゜Evening ()1 order (,;'11.411.(・force direction addition; natural (Z h-direction) only intermittent (N, I thermal operation'E Mfi! ,, ,)l (~1 Meiki method (1, 1
The person who acquired Noah Nsiyan. Toku lIJ Reda, Tsuno・
N・'/Ya 7]KaIran Shuto'(<, '!'p
*Kokoro, 'ri:41'Ai' i-mi11 tl t)
) k<7 +! (bulk f′1llN ,,/semi-eastern part 1
Haroku J/Initiation) 1.6 Ji'122 table? 1. Bo.j”
1fl'! ',',)? Oh, ta.

Table 1 Table 2 Obtained Fanshaan Yi, ・Metal density j degree '70:,
/Dre +4-, Weaved in "14F structure with weft density 64/end/j*',: +'!-1□゛,ro-i"JkJ
Is there a difference between the two surface unevenness of the fabric? = Ikegara ξ product I have the appearance of a mature person, and the feel is soft to the touch, with a Borino '7' feel.

3. <Effects of the Invention> As described above, the method of the present invention performs fluid treatment 4i while overfeeding the millimeter, yarn, and fitment yarn.11. The over 1' tail loop is formed by alternating twisting at 2°C and the over 1' tail loop is twisted intermittently.・Since there is a method in which the 1L false-twisted part and the untwisted bulky part are formed at an angle of θ], the soane yarn obtained by the method of the present invention has unevenness of the yarn and a mixture of different twist directions (4, , /r,) By the expression of light υ
,,g1. ．． ．． ,,-;,...N...ya°-u', Shiwazukuri method, Tsuruto j: (,zme' Shrink the bar roll (, and 6:゛yo'?: Fabric C1, It imparts 2° elasticity and 7 degrees of elasticity, and can significantly increase the volume and plump feel.

[Brief explanation of the drawing]

Fig. 1 is a process schematic diagram showing an example of the manufacturing process of the method of the present invention, Fig. 2 is a schematic diagram of the external appearance of yarn subjected to fluid treatment, and Fig. 3 is an example of fancy yarn obtained by the method of the present invention. FIG. (1) Burn (2) Supply roller (3)
Injection nozzle (4) First delivery roller (5) Twisting device (6) Second delivery roller (7)
Winding roller (8) Puff cage (P) Multifilament yarn (A) Untwisted part (B), (B") Untwisted part (C) Untwisted part

Claims (1)

[Claims] 1. Performing fluid treatment while overfeeding the multifilament yarn to generate a large number of loops, entanglements, or slack, and then performing intermittent false twisting operations via a take-up roller,
A method for producing a fancy yarn, which comprises alternately forming heated bundled portions bundled by S twist or Z twist and bulky portions which are not twisted in the longitudinal direction of multifilament yarn. 2. The method for producing fancy yarn according to claim 1, wherein the multifilament yarn is two or more different multifilament yarns. 3. The method for producing fancy yarn according to claim 2, wherein the difference in overfeed rate of multifilament yarn is 15% or more. 4. The method for producing a fancy yarn according to claim 1, 2 or 3, wherein the multifilament yarn is a thermoplastic synthetic fiber multifilament yarn, and the false twisting operation is performed while being heat treated.