JPH0665826A - Production of fancy yarn having silky luster - Google Patents

Abstract

PURPOSE:To obtain the subject yarn having a silky spun-like touch by changing the amount of a fed sheath yarn by the input of signal and controlling the sheath yarn-feeding amount at a high response rate within a time lag from a signal-inputting time point to a real operation time point. CONSTITUTION:Two or more multifilament yarns are used. The multifilament yarn 1 for a core yarn is fed in a core yarn-feeding amount <=+3% larger than the take-off amount of a feeding roller 2, watered with a water-imparting roller 5 and subsequently fed into a nozzle 6. The multifilament yarn 3 for the sheath yarn is controlled to a take-off amount >=-5% larger than the instantaneous lower limit amount of the core yarn and subsequently fed into the nozzle 6. The fed core and sheath yarns are subjected to a fluid-jetting treatment in the nozzle 6 into a sheath-core type blended yarn, thermally treated with a heater 10 through a delivery roller 7, and subsequently wound up on a winding roller 8. In the method, the sheath yarn-feeding amount can be changed by the input of signals, and the sheath yarn-feeding amount is controlled at a high response rate wherein a time lag from a signal input time point to a rear operation time point is <=30sec, thus providing the objective fancy yarn having a silky luster.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a mixed yarn composed of a core yarn and a sheath yarn, in which thick yarn portions and raw yarn portions are alternately present in the longitudinal direction of the yarn, and the length and thickness of each portion are random. The present invention relates to a method for producing a fancy yarn having a silky luster.

[0002]

2. Description of the Related Art Conventionally, knitted and woven products using a yarn in which multifilament yarns are compounded have excellent texture and functional characteristics such as stiffness, waist, bulkiness, wrinkle resistance and high density. As a result, we have established a position that occupies a wide range of clothing products. However, in recent years, knitted and woven fabric products made of multifilament yarns have become more and more popular with consumers due to their monotonous appearance and texture, and have a natural surface effect and freshness with a wide range of variations in thickness and bulkiness. There is a strong demand for a smooth feel. For example, Japanese Patent Laid-Open No. 61-18654
Japanese Patent Publication No. 4 discloses a variable speed yarn supplying method for obtaining filament yarn having spots. However,
The yarn obtained is still not natural, and when fluid-jetting multifilament yarn, it is a yarn processing method that uses an inverter to change the yarn supply amount. In other words, there is a large time delay (rise and fall), and the thickness and length of the spots are rough, which has been a problem for making the product upscale or specializing it. Further, especially when the processing speed becomes fast, the change in the yarn supply amount becomes slow and the above tendency becomes strong, which is a fatal defect for realizing rational production.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and has a natural thickness unevenness, a surface rich in changes in bulkiness unevenness, a fresh spindle shape, a high-grade feel and a silky feel. An object of the present invention is to provide a fancy yarn having a gloss. Another purpose is to control the yarn supply amount in fluid jet processing with high accuracy instantly even if the yarn processing speed becomes fast, and the surface effect with a wide variety of thickness and length, and a fresh spindle shape. And a method for producing a fancy yarn having a silky luster.

[0004]

To achieve the above object, the present invention has the following constitution. That is, by using a multifilament yarn of two or more yarns, the core yarn supply amount is + 3% or less with respect to the take-up amount, and the sheath yarn supply amount is increased / decreased within an instantaneous lower limit of −5% or more with respect to the core yarn. In the core-sheath type mixed fiber processing by fluid injection processing that is controlled at high speed, the sheath thread supply amount can be changed by signal input, and the sheath thread is supplied at a response speed of 30 msec or less from the signal input time to the actual operation time. A method for producing a fancy yarn having a silky luster characterized by controlling and processing an amount.

The present invention will be described in more detail below. FIG. 1 is a process schematic diagram showing an example of a manufacturing method according to the present invention. In a yarn processing method in which a multifilament yarn of a core yarn and a sheath yarn is subjected to a fluid jetting treatment to impart bulkiness of loops and tarmi, the multifilament yarn 1 is supplied from a nip type feed roller 2 at a constant yarn supply amount. The water is then supplied by the water applying roller 5 and then supplied to the nozzle 6. On the other hand, multifilament yarn 3
Is instantaneously accelerated and decelerated and controlled and supplied to the nozzle 6 while controlling the yarn supply amount from the winding type feed roller 4.

Since the number of revolutions of the feed roller 4 is momentarily variably controlled by the computer device 9, the yarn supply amount is irregularly or regularly controlled by the computer device according to the signal of the program software to change the fluid turbulence. It is supplied to the nozzle 6. The multifilament yarn that has been subjected to the fluid turbulence treatment is passed through the delivery roller 7 and the heater 1
After being heat-treated at 0, it is wound on cheese by the winding roller 8. The number of rotations of the feed roller 4 can be easily changed by changing the pattern of the signal controlled by the computer device 9. The thick yarn portion becomes thicker as the yarn supply amount per unit time increases, and the thick yarn portion becomes thinner as the yarn supply amount decreases, so that the thickness can be changed. If the yarn supply time is long, the thick yarn has a long yarn length, and if the yarn supply time is short, the thick yarn has a short yarn length. The regular control referred to in the present invention means control with an input signal consisting of repetition of a certain shape (pattern) of the rotation of the feed roller, and irregular control means rotation of the feed roller. Controlling with an input signal with an indefinite number (not a simple repetition of a pattern). Irregular control is performed by controlling the feed roller with a signal input waveform such as a signal arbitrarily selected by a random number generator, a signal whose frequency is changed every moment, or a signal whose pattern repeating unit is long. It is achieved by

In order to control the number of rotations of the feed roller 4, for example, a positioning servomotor used in a robot can be used and controlled by signal input using a computer.

FIG. 1 shows an example in which the heat treatment is performed after the fluid jetting process. In the manufacturing method of the present invention, the process without the heater 10 and the delivery roller 11 in FIG. It is preferable to heat-treat the drawn fancy yarn at a temperature equal to or higher than the softening point temperature of the filament yarn because the silky appearance and texture can be further improved. In that case, the overfeed rate between the delivery roller 7 and the delivery roller 11 is preferably larger in the tensioned state than in the relaxed state as a silky effect. Also, setting the temperature above the softening point temperature causes the filament yarn to shrink, so that in the thick yarn portion, the sheath yarn is entangled with the core yarn at an extremely high density, resulting in a yarn form that is more excellent in the spindle shape. In the part, the talumi of the sheath yarn contracts and entangles with the core yarn,
In addition, the core yarn shrinks, and the sheath yarn is sandwiched between them to shrink,
It is preferable because it has a straighter shape.

FIG. 2 is an explanatory diagram for explaining the delay time from the signal input time to the actual operation time. In FIG. 2, (R) shows an example of a signal for controlling the rotational speed of the feed roller, and (S) shows an example of a signal for controlling the rotational speed of the feed roller. In (a), the rotation number of the feed roller increases in pulses, but the actual rotation number of the feed roller reaches the speed-up setting value with a time delay of (c) and increases again with a time delay of (d). It will be the previous speed. (C) in this case
Alternatively, (d) is called a delay time from the signal input time to the actual operation time. FIG. 3 is a schematic diagram showing another example of a signal for controlling the rotation speed of the feed roller. (E)
The thick yarn portion is formed in the portion (2), and the raw silk portion is formed in the portion (f).

In the manufacturing method of the present invention, when the speed is changed or the speed is changed, the delay time from the signal input time to the actual operation time (see the rising time (c) or the falling time (d) in FIG. 2) is It is important that the time is 30 msec or less, which allows variable control in an instant even if the feed roller rotates at a high speed. Specifically, for example, when running the yarn at 300 m / min, if the speed-up change or the deceleration change can be performed at least with a delay time of 30 msec or less, a short thick yarn portion of 30 cm or less can be provided with high accuracy. When it exceeds 30 msec, the time delay of speed change or speed change becomes long and the spindle shape of the obtained yarn becomes rough, which is not preferable.

In the manufacturing method of the present invention, it is important that the amount of core yarn supplied is not more than + 3% of the amount of yarn taken up.
By setting the supply amount of the core yarn to + 3% or less, when the supply amount of the sheath yarn being accelerated / decelerated becomes equal to the supply amount of the core yarn, the core yarn and the sheath yarn are aligned and straight The raw silk portion will be formed. If 0% or less,
It is preferable because a more excellent silky luster can be obtained. If the amount of core yarn supplied exceeds + 3% of the yarn take-up amount,
Even if the core yarn and the sheath yarn are aligned, loops, talumi, etc. are easily formed, and it becomes difficult to form a straight shape, which is not preferable.

On the other hand, the lower limit of the yarn supply amount of the sheath yarn is preferably within the range of -5% or more of the instantaneous lower limit with respect to the core yarn.
When the lower limit of the yarn supply amount of the sheath yarn is in the range of less than -5%, the entanglement with the core yarn becomes poor, which is not preferable.

FIG. 4 is an explanatory view for explaining the instantaneous lower limit of the sheath yarn supply amount. In FIG. 4, the horizontal axis represents time (T) and the vertical axis represents overfeed rate (OF) with respect to the yarn take-up amount. More specifically, referring to FIG. 4, the instantaneous lower limit of the supply amount of the sheath yarn to the core yarn is −5% or more, and the overfeed ratio of the sheath yarn which becomes the lowest instantaneously is lower than that of the core yarn. 5
A supply amount that is at least%. In FIG. 4, the overfeed rate on the core yarn side is 0% (constant) compared to the thread take-up amount, while the instantaneous lower limit overfeed rate of the sheath yarn is -5% compared to the yarn take-up amount. That is, the instantaneous lower limit is -5% with respect to the core yarn. In this case, at the time when the supply amount of the sheath yarn is lower than that of the core yarn, the shaded portion (g),
The excessively supplied yarn of (h) will be taken in.
Then, the remaining portion forms the thick thread portion.

On the other hand, in order to obtain thick and thin spots, the take-up amount (that is, the speed of the delivery roller 7 shown in FIG. 1) may be changed within a range of 5% or less instead of the sheath yarn supply amount. . Further, in addition to the feed roller 4, the speed of the feed roller 2 may be changed at the same time.

The multifilament yarn used in the present invention is made of synthetic fibers such as polyamide and polyester, or semi-synthetic fibers such as acetate and rayon. Among them, polyamide or polyester multifilament yarns are suitable for forming the bulkiness of loops and talumi. The number of constituent filaments is, for example, 24 to 150 in a multi-filament yarn of 50 denier,
Denier is preferably 24 to 96. Moreover, Y
It is easier to form the bulkiness in the irregular cross section such as mold and triangle.
Furthermore, by combining different denier yarns, different shrinkage yarns, different gloss yarns, etc., a higher quality product can be obtained.

FIG. 5 is a schematic view showing an example of a fancy yarn having a silky luster obtained by the present invention. In FIG. 5, a indicates a raw silk portion and B indicates a thick yarn portion.

In the raw silk portion, a core yarn and a sheath yarn are mixed in a straight state, and there are almost no loops or slacks on the surface, and they are bundled as a whole and are mainly formed in a straight shape. Therefore, the raw silk portion forms a relatively flat surface, reflects light well, and has a silky luster. Further, since there is a portion in which the sheath yarn is entangled with the core yarn, the raw silk portion is not easily opened.

The thick yarn portion has a spindle shape formed by a large number of loops, entangled, and slack that have been subjected to a fluid ejection process. Above all, a large bulky portion has many relatively small-sized loops, entanglements, and slacks, and a small bulky portion has large and small sizes. The spindle shape as used herein means the shape of a tube yarn or a cup used in the spinning process.

The length of the thick thread portion can be designed to be 1 cm at the short portion and several thousand meters or more at the long portion, and can be appropriately selected according to the purpose of the product. For example, 1 to 3c for nep
m, 10 to 15 cm for slabs, 15 to 2 for ball threads
0m is a preferable range. From the apparent thickness (thread diameter), the range of thickness of thick thread is 1.1-
It is preferably 10.0 times. If it exceeds 10.0 times, the process passability is deteriorated, which is not preferable. Also 1.2 ~
It is more preferable that the range is 5.0 times. The apparent thickness was 0.
It can be obtained by measuring the maximum projected yarn diameter of the thick yarn portion with respect to the yarn in which the yarn length is fixed with a tension of 1 g.

In the thick yarn portion, the density at which the core yarn and the sheath yarn are entangled is preferably high as a thick yarn shape, for example, it is preferable that the length of the sheath yarn is entangled at 1.1 times or more the length of the core yarn. If it is less than 1.1 times, the entanglement density is small and the effect as a thick yarn is small, which is not preferable. The ratio of the length of the core yarn to the length of the sheath yarn is 0.1 per denier.
Under the tension of g, the apparent yarn length of the core yarn (short length yarn) is measured (this length is referred to as L1), and then the core yarn is cut to make the apparent appearance of the sheath yarn (long length yarn). Measure the yarn length (this length is L2) and the ratio of L2 to L1 (L2 / L1)
Required from.

In the combination of the lengths of the thick yarn portion and the raw yarn portion, if the combination pattern is such that the yarn length of the raw yarn portion is longer than that of the thick yarn portion, it tends to look more natural. The average length ratio (thick yarn portion length: raw silk portion length) is preferably in the range of 1: 1 to 1: 1000, but it is also possible to reverse this ratio, for example, in the range of 1000: 1 to 1: 1.

The thick yarn portion and the raw silk portion are alternately present in the longitudinal direction of the yarn with arbitrary lengths, but the alternating periods may be either regular or irregular. The more regular, the more prone to artificial or geometric surface effects. It is preferable that the period is irregular because a surface having a natural feeling can be obtained.

In the yarn obtained by the present invention,
It is characterized in that the length and thickness of the thick thread portion or the raw silk portion are irregularly or regularly changed in the longitudinal direction of the yarn. That is, the thick yarn portion exists across the raw silk portion, but the more regular (uniform) the length and thickness of each thick yarn portion that exists in the yarn longitudinal direction, the more It tends to be artificial, and the more irregular it is, the more natural it can be expressed.
In order to express a natural feeling, it is preferable that the one which is irregularly changed and exists, or the one which is regularly changed and has a long repeating unit length (for example, one which is repeated over 1000 m or more). The same applies to the raw silk part. On the other hand, when the length and thickness of each thick thread portion (or raw silk portion) are constant,
It is not preferable because a natural silky feeling cannot be obtained.
The yarn obtained by the present invention preferably has a U%, which represents the degree of yarn unevenness, in the range of 3 to 15%.

The texture of the cloth is preferably based on the raw yarn of filament yarn. When the core yarn forms a straighter shape and is non-bulky like raw yarn, it is a silky, spanky feel with a higher sense of quality. You can get the texture. Also,
When the denier of the filament yarn used as the sheath yarn becomes thin, it gives a soft touch, and when a single fiber filament yarn having different shrinkage is mixed, a bulging feeling is obtained. The yarn cross-sectional shape can be modified to be a combination of shapes that make the best use of luster, elasticity, waist or drape. Furthermore, by using heterochromatic filament yarns for the core yarn and the sheath yarn, it is possible to obtain a product excellent in a different color effect.

[0025]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. The characteristic values in the examples are obtained by the following method.

Apparent thickness With a tension of 0.1 g per denier fixed to the yarn length, a reader printer (RIMAC350, manufactured by Ricoh Micro Photo Co., Ltd.) which is a projection type yarn form measuring instrument.
The thick yarn portion was magnified 5 times by the type 0) and the maximum projected yarn diameter was measured.

Thread Length Ratio Under a tension of 0.1 g per denier, the apparent yarn length of the core yarn (short length yarn) is measured (this length is referred to as L1),
Then, the core yarn is cut, and the apparent yarn length of the sheath yarn (long yarn) is measured (this length is referred to as L2), and L is compared with L1.
It is obtained from the ratio of 2 (L2 / L1).

KET-80 manufactured by U% Measuring Instruments Co., Ltd.
It was measured by B and determined.

Example 1 FIG. 1 except that the heater 10 and the delivery roller 11 are not used.
Filament yarn 1 (core yarn) in the same processing step as
As polyester multifilament yarn (30 denier 6 filament, bright, round cross section, boiling water shrinkage 23
%), Polyester multifilament yarn (50 denier 72 filaments, as filament yarn 3 (sheath yarn),
Bright, round cross-section, boiling water shrinkage rate 8%, fluid turbulence treatment nozzle 6 pressure 6.0 kg / cm ² , feed roller 2 surface speed 198 m / min, delivery roller 7 surface speed 200 m / min (ie core yarn) The supply amount is -1% with respect to the take-up amount), and the repeating unit for changing the sheath yarn supply amount is a rectangular wave input signal ((a) 10 msec × 3 as shown in FIG. 2).
00m / min, (b) 5 sec x 197m / min,
Thread processing was performed under the conditions of (c) rise delay time of 3.5 msec and (d) fall delay time of 3.5 msec). As a result, a fancy yarn having a U% of 6.6% and the following silky luster was obtained. Thick yarn ratio of maximum apparent thickness of thick yarn portion to raw yarn portion 3.5 Average length 3.3 cm Average apparent fineness 95 denier Average yarn length ratio (core yarn: sheath yarn) 1: 1.2 Average length of raw silk portion 1670 cm Average apparent fineness 79 denier Average yarn length ratio (core yarn: sheath yarn) 1: 1 The obtained yarn was used as a weft, and a normal polyester filament yarn (50 denier 36 filament, bright, round cross section) was used as the warp. The fabric was woven under the following conditions and further dyed. As a result, a spun-like woven product having a silky appearance and a silky-like luster having a texture with unevenness was obtained. Additional twisting condition S850T / m Twist stop set 80 ° C (wet heat) x 60 min Weaving condition Warp Polyester filament yarn 50 denier 36 filament Weft Fancy yarn of Example 1 Warp yarn 130 (threads / inch), weft thread 75 (lines / inch) texture Plain weave Dyeing condition Scouring soda ash 2g / l, 60 ℃ × 40min Wet heat relaxation treatment Hot water 98 ℃ × 60min Free state treatment Dry heat relaxation treatment Dry heat 170 ° C × 90sec Treatment in free state Intermediate set Dry heat 180 ° C × 90sec ( Dry heat relaxation Treatment with width / length after treatment) Weight reduction processing NaOH 30g / l x 98 ° C x 60min (25% weight reduction) High pressure dyeing 130 ° C x 60min finish set with disperse dye Dry heat 180 ° C x 90sec width / Long-term processing Example 2 In the processing step as shown in FIG. Yarn 1
Polyester multifilament yarn (3) as (core yarn)
0 denier 12 filaments, bright, round cross section, boiling water shrinkage 25%), polyester multi-filament yarn (50 denier 36 filaments, bright, triangular cross section, boiling water shrinkage 12%) is used as the filament yarn 3 (sheath yarn), and fluid Turbulent treatment nozzle 6 pressure 6.0 kg / cm ² ,
The surface speed of the feed roller 2 is 200 m / min, the surface speed of the delivery roller 7 is 200 m / min (that is, the core yarn supply amount is 0% with respect to the take-up amount), and the repeating unit for changing the sheath yarn supply amount is SIN as shown in FIG. Wave input signal ((e) 20 msec x 350 m / min (peak speed),
(F) 2 sec × 198 m / min), further, yarn processing was performed under the conditions of a heat setting temperature of 180 ° C. and a heat setting overfeed rate of 0%. As a result, a fancy yarn having a U% of 5.1% and the following silky luster was obtained. Thick yarn ratio of maximum apparent thickness of thick yarn to raw silk 3.1 Average length 6.7 cm Average apparent fineness 92 denier Average yarn length ratio (core yarn: sheath yarn) 1: 1.3 Average length of raw yarn part 670 cm Average yarn length ratio (core yarn: sheath yarn) 1: 1.01 The obtained yarn was used as the weft, and the normal yarn was a polyester filament yarn (75 denier, 36 filaments, bright, triangular cross section). The fabric was woven under the following conditions and further dyed. As a result, a silky woven fabric product with a silky appearance, a texture with unevenness, and a firmness and elasticity was obtained. Additional twisting condition S850T / m Twist stop set 80 ° C (wet heat) x 60 min Weaving condition Warp yarn Polyester filament yarn 75 denier 36 filament Weft yarn Silky fancy yarn of Example 2 Density Warp yarn 90 (pieces / inch), weft yarn 75 (pieces / inch) ) Tissue plain weave Dyeing conditions Scouring same conditions as in Example 1 Wet heat relaxing treatment Same conditions as in Example 1 Dry heat relaxing treatment Same conditions as in Example 1 Intermediate set Same conditions as in Example 1 Weight reduction NaOH 30 g / l x 98 ° C x 70 min (23% reduction) High-pressure dyeing Same conditions as in Example 1 Finishing set Same conditions as in Example 1 Example 3 Using the same filament yarn as in Example 1, the surface speed of the feed roller 2 was 206 m / min (that is, core yarn supply). The amount is + 3% with respect to the collected amount) and other manufacturing conditions are the same as in Example 1 It performs a factory to obtain a fancy yarn U% has a silky luster, such as the following at 5.5%. Thick yarn ratio of maximum apparent thickness of thick yarn portion to raw silk portion 3.8 Average length 3.5 cm Average apparent fineness 98 denier Average yarn length ratio (core yarn: sheath yarn) 1: 1.1 Average length of raw silk portion 1640 cm Average apparent fineness 82 denier Average yarn length ratio (core yarn: sheath yarn) 1: 1 The obtained yarn had a slightly swollen feeling in the raw silk portion as compared with Example 1 and had good entanglement. The thick thread had a large apparent bulk and was tightly entwined. Although the gloss is slightly lower than that of Example 1, a silky glossy feeling was obtained because the contrast between the raw thread portion and the thick thread portion was large.

Comparative Example 1 The same filament yarn as in Example 1 was used, and the surface speed of the feed roller 2 was 210 m / min (that is, the core yarn supply amount was + 5% with respect to the take-up amount), and other manufacturing conditions were used. When the yarn processing was performed in the same manner as in Example 1, the obtained yarn formed more talumi and small loops in the raw silk portion than in Examples 1 and 2, and a silky luster was not obtained.

[0031]

According to the manufacturing method of the present invention, even if the yarn processing speed becomes fast, the technique capable of instantaneously and easily controlling the supply amount of the yarn in the fluid jet processing with extremely high precision makes it possible to control the unevenness of the thickness and the thinness. It is possible to obtain a yarn having a natural surface effect which is rich in length unevenness and has a silky-like spun-like texture with a fresh taste. In addition, the thick thread shape can be manufactured by the signal input of the SIN wave in which the thread supply amount is smoothly controlled,
It is possible to obtain a spindle-shaped thread shape with a very long foot and a smooth texture with unevenness. The change in thickness and the cycle of length unevenness can be freely changed by the input signal of the computer.Therefore, when the length cycle is overlapped and an irritating or striped unevenness occurs when making a knitted fabric product, , The design can be changed easily.

Further, the fancy yarn having a silky luster obtained by the production method of the present invention has an excellent silk-like luster because it has a raw silk portion having a straight shape, and is knitted from the yarn of the present invention. The surface quality of the woven product is good, and it has silky luster and excellent drapeability. Since the yarn obtained by the present invention has a spindle-shaped thick yarn shape having many loops, entanglements, and slacks,
It has a bulge and looks good. And in the thick yarn portion, the sheath yarn is strongly entangled with the core yarn and has a tight yarn structure,
When it is applied to a knitted woven fabric, for example, a woven crimp can give a textured feel.

Since the thick yarn portion is obtained by instantaneously controlling the amount of sheath yarn supplied with high accuracy, it has a spindle-shaped yarn shape with long legs, and the boundary changes from raw yarn to thick yarn or from thick yarn to raw yarn. Is not a clear shape, but a more natural thick
A fine feeling can be obtained.

Since the length of the thick yarn is irregular or regular in the longitudinal direction of the yarn, it is possible to express a surface effect having a natural feeling in the length of the spot, and at the same time, give a span-like texture. Obtainable. As described above, the length of the thick thread is a minute length in the longitudinal direction of the thread, for example, a length of about 1 cm, or a length of several hundreds or thousands of meters can be continuously expressed, so that a surface with a wide variety of surfaces. The effect can be obtained.

In the raw silk portion, the core yarn and the sheath yarn are intertwined with each other and are bundled as a whole, so that there is little chance of being partially fired or opened, and the raw yarn passes through processes such as unwinding and weaving. It has excellent properties.

[Brief description of drawings]

FIG. 1 is a schematic process diagram showing an example of a manufacturing method according to the present invention.

FIG. 2 is a schematic diagram showing an example of a signal for controlling the rotation speed of a feed roller.

FIG. 3 is a schematic diagram showing another example of a signal for controlling the rotation speed of the feed roller.

FIG. 4 is an explanatory diagram illustrating an instantaneous lower limit of a sheath yarn supply amount.

FIG. 5 is a schematic view showing an example of a fancy yarn having a silky luster according to the present invention.

[Explanation of symbols]

 1: Multifilament yarn (core yarn) 2: Feed roller 3: Multifilament yarn (sheath yarn) 4: Feed roller 5: Water application roller 6: Fluid injection nozzle 7: Delivery roller 8: Winding roller 9: Computer device 10: Heater 11: Delivery roller

Claims (2)

[Claims] 1. A multifilament yarn having two or more yarns is used, a core yarn supply amount is + 3% or less with respect to a take-up amount, and a sheath yarn supply amount is an instantaneous lower limit of −5% or more with respect to the core yarn. In the core-sheath type mixed fiber processing by fluid injection processing that controls acceleration and deceleration in a range, the amount of sheath yarn supply can be changed by signal input, and the delay time from the signal input time to the actual operation time is 3
A method for producing a fancy yarn having a silky luster, which comprises controlling the amount of sheath yarn supplied at a response speed of 0 msec or less and processing. 2. A method for producing a fancy yarn having a silky luster according to claim 1, wherein the heat treatment is performed after the fluid jetting treatment.