JPH0533232A - Fancy yarn and method for producing the same - Google Patents

Abstract

(57) [Summary] [Structure] A part of the yarn that is highly bulky in the longitudinal direction (b)
And a small portion (a) are alternately present, and the large bulky portion (b) is a spindle-shaped portion having a large number of loops, entanglements, and slacks, and the length of each portion. Is a randomly formed single filament multifilament yarn, which is a single yarn multifilament yarn 1 which is subjected to fluid treatment by a fluid ejection treatment device 4 to produce loops and tarmi. It can be obtained by a manufacturing method in which the yarn supply amount of the multi-filament yarn is instantaneously and constantly or non-steadily controlled in the processing method for imparting bulkiness. [Effect] Even if the yarn processing speed becomes faster, the technology that can instantly and easily control the supply amount of yarn in fluid ejection processing with extremely high precision makes it possible to create a natural surface rich in thickness irregularities and length irregularities. It can have a spun-like texture with an effect and a fresh taste.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan yarn in which a yarn having a large bulkiness and a yarn having a small bulkiness alternately exist in the longitudinal direction of the yarn and a method for producing the same. The present invention relates to a random fany yarn excellent in spindle shape and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, knitted and woven products using multifilament yarn have functionally excellent characteristics such as stretchability, bulkiness, and wrinkle resistance. It was

However, in recent years, the knitted and woven products made of the conventional multi-filament yarns have become more and more shunned by consumers in terms of their monotonous appearance and texture, and changes due to natural thickness unevenness and bulky unevenness. A rich surface effect and a fresh texture are strongly desired.

As a technique for improving these, the yarn production conditions can be instantaneously controlled by a computer, for example, so that the needs of consumers can be immediately met and the products can be upgraded or specialized. Manufacturing technology is required.

For example, there is a variable speed yarn supply method disclosed in Japanese Patent Laid-Open No. 61-186544. However, in this proposal, when a multi-filament yarn is subjected to fluid jet processing, since it is a yarn processing method that uses an inverter to change the supply amount, there is a large time delay (rise, fall) with respect to the variable signal of the yarn supply, When the yarn processing speed is high, the yarn supply amount becomes slow, and as the yarn processing speed becomes higher, this tendency tends to increase. As a result, there is a limit to the thickness and length of the spots, and there is a problem in further increasing the quality or specializing the product, which is a fatal defect in achieving rational production.

[0006]

SUMMARY OF THE INVENTION In view of the above points, an object of the present invention is to control the yarn supply amount in fluid jet processing instantly, with high accuracy, even when the yarn processing speed is high. However, the present invention provides a fan yarn having a surface effect rich in variation in thickness irregularity and length irregularity and a fresh spunlike texture, and a method for producing the same.

[0007]

A fan yarn and a method for producing the same according to the present invention, which achieves the above object, have the following constitutions. That is, a large bulkiness portion and a small bulkiness portion are alternately present in the longitudinal direction of the yarn, and the bulkiness portion is composed of a large number of loops, entanglements, and slacks in a spindle shape, and the length of each portion is a yarn. A fan yarn comprising a single filament multi-filament yarn which is randomly present in the longitudinal direction. Further, the above-mentioned fan yarn is subjected to a fluid jetting process on a single filament multi-filament yarn, in the process of imparting the bulkiness of loops and talmis,
This can be achieved by a method for producing a fan yarn, which is characterized in that the yarn supply amount of the multifilament yarn is instantaneously and constantly or non-steadily controlled.

The present invention will be described in more detail below. First, in the present invention, the bulky portion of the fan yarn is a spindle-shaped portion composed of a large number of loops, entanglements, or slacks that have been subjected to the fluid ejection process. The bulky portion has a relatively small size and is formed from loops, entanglements, or slacks. Conversely, the bulky portion has a small number of these. The spindle type is the shape of the yarn or cup used in the spinning process,
Alternatively, it means a shape that is substantially similar to these shapes.

The yarn length of each portion is determined by a combination of the yarn feeding amount and the feeding time, and can be freely selected within a range of 0.5 cm for a short length and several thousand m or more for a long length. Specifically, as the length of the portion having a large bulkiness, practically, a preferable range is 1 to 3 cm for a nep, 10 to 15 cm for a slab, and 15 to 20 m for a ball thread.

Regarding the thickness of the bulky portion, the apparent bulkiness of the bulky portion is 1.1 to 7.0 times larger than that of the bulky portion, but if the bulky portion is too thick, it passes through the process. It is not preferable because it lowers the
The range of up to 5.0 times is preferable. Furthermore, the thickness of the bulky portion is not a constant thickness but a so-called random thickness, but in U% indicating the degree of yarn unevenness, a level of 20% or less on average in the yarn length direction is preferable.

In the present invention, since the shape of the portion having a large bulkiness is constituted by the spindle shape, when it is applied to a knitted fabric, it has a good-looking and natural appearance of thickness unevenness. Further, in the combination of lengths, the pattern looks natural when the yarn length of the thin bulky portion is longer than that of the thick bulky portion. Average length ratio is 1: 1 to 1:20
The range of 00 is excellent, and it is elegant and natural. Note that this ratio can be easily changed by a device for instantaneously changing the yarn supply amount shown in FIG. As a special use, this ratio is 200
It is also possible to reverse in the range of 0: 1 to 1: 1.

The portions having a large bulkiness and the portions having a small bulkiness are alternately present in the lengthwise direction of the yarn with arbitrary lengths, but the alternating cycle is either regular or irregular. Good. However, the former has a surface effect of an artificial sensation, and thus the latter is generally preferable because a surface having a natural feeling can be obtained.

The texture of the fabric is based on the raw yarn of filament yarn, but due to the presence of the bulky portion, it has a span-like texture. If the denier of the filament yarn used is thin, a soft touch can be obtained, and if filaments of different filaments with different shrinkage are mixed, a swelling feeling can be obtained. .

An external view of the yarn form of the present invention is shown in FIG. B indicates a portion with low bulkiness, and B indicates a portion with high bulkiness.

Next, the manufacturing method will be described. Figure 2
FIG. 4 is a process drawing showing an example of a yarn processing method for imparting bulkiness to loops and talumi by performing a fluid injection process on the multifilament yarn according to the present invention. The multi-filament yarn 1 is supplied from the feed roller 2, but since the rotation speed of the feed roller 2 is momentarily variably controlled, the yarn supply amount is supplied to the fluid turbulence treatment nozzle 4 while constantly changing. The multi-filament yarn subjected to the fluid turbulence treatment is taken up from the delivery roller 5 and taken up by the take-up roller 6 into cheese.

Since the number of revolutions of the feed roller 2 is controlled by the computer device 7, it is possible to easily design the required spot pattern. The supplied yarn is applied with water by the water applying roller 3 and processed by the nozzle 4. When the yarn supply amount per unit time is large, the bulkiness is large, and when the yarn supply amount is small, the bulkiness is small and the thickness can be changed, and when the yarn supply time is long, the bulkiness is large and the yarn length is long. If the length is long and the yarn supply time is short, the bulkiness is small and the yarn length is short.

The multifilament yarn 1 is composed of synthetic fibers such as polyamide and polyester, and semi-synthetic fibers such as acetate and rayon. Among them, the polyamide and polyester multifilament yarns are suitable for forming bulky loops and tarmi. There is. In the number of constituent filaments, for example, in the case of 75 denier multifilament yarn, 24
~ 96 are preferable. In addition, irregular shaped sections such as Y-shaped and triangular shapes are more likely to form thickness irregularities than round shapes, and by combining denier mix, shrinkage difference mixed fiber, etc.,
It is possible to obtain higher quality products.

The number of rotations of the feed roller 2 is instantaneously variably controlled by using the computer device 7. Specifically, a servo motor used for positioning the robot machine is used. In order to instantaneously variably control the rotation speed of the motor at high speed rotation, the response speed is required to be extremely high. When speed up or speed down is changed, the delay time (rising or falling) for the signal is 30m.
It is preferably s or less. For example, 300m / mi
If the speed is changed or decelerated with a delay time of at least 30 ms when running the yarn at n, it will be 30 cm.
Fancy yarns having the following short slabs can be formed. If it exceeds 30 ms, the time delay of the speed change or the deceleration change becomes long, resulting in slow motion and it becomes impossible to design a short length.

As an application example, further, reheat setting is performed before winding on cheese, or a plurality of different kinds of yarns of the same kind or different denier, cross-sectional shape, shrinkage ratio, gloss, material etc. are drawn and aligned. The fluid turbulent flow treatment can be performed. Further, instead of the yarn supply amount, the yarn take-up amount, that is, the speed of the delivery roller shown in FIG. 2 may be changed.

The method for measuring the apparent thickness is 0.
The thread length was fixed under a tension of 1 g, and the thread diameter in a projected form magnified five times with a reader printer was measured.

[0021]

【Example】

Example 1 Thread processing was performed under the following conditions by the processing steps shown in FIG. Supplied yarn Polyester multi-filament yarn 75 denier 72 filament triangular cross-section yarn Yarn processing speed 400 m / min Repeat unit for changing the amount of yarn supplied (rectangular wave input signal ... Fig. 3) (a) 20 ms × 393 m / min (b) 200 ms × 318 m / min Rise delay time 5 ms Fall delay time 5 ms Fluid turbulence treatment nozzle pressure 6.0 kg / cm ² As a result, the following fan yarn was obtained.

Bulky part (large) Apparent thickness 3.5 times ...
Dark color length 18 cm Average apparent fineness 95 denier Bulky portion (small) Length 141 cm ... Light color average apparent fineness 77 denier When the yarn is used as a weft of a polyester filament yarn 75 denier fabric, a natural mottled feeling is obtained. A product having a shantung-like appearance and a span-like texture was obtained.

Example 2 Thread processing was performed under the following conditions by the processing steps shown in FIG. Supplied yarn Polyester multi-filament yarn 75 denier 72 filament triangular cross-section yarn Thread processing speed 170 m / min Yarn supply amount change repetition unit (SIN wave input signal ... Fig. 4) (c) 10 ms x p 160 m / min (d) 20 ms x 140m / min (e) 5ms x p150m / min (f) 2ms x p143m / min x 4 cycles (g) 50ms x 140m / min Rise time delay 4ms Fall time delay 4ms p: Peak fluid turbulence treatment nozzle pressure 6. 0 kg / cm ² As a result, the following fan yarn was obtained.

Bulky part (large) Apparent thickness 1.5-4.
5 times dark-colored part length 2-35 cm Average apparent fineness 98 denier Bulky part (small) length 3-150 cm ... Light-colored part average apparent fineness 76 denier All appeared at random. When the yarn was used as a weft yarn of a woven fabric having a polyester filament yarn of 75 denier, a product having a natural sensation and a chic and thin appearance with a difference in shade and a span-like texture was obtained. In particular, it has a small thickness unevenness in a small bulky portion.

Example 3 Thread processing was performed under the following conditions by the processing steps shown in FIG. Supplied yarn Polyester multi-filament yarn 75 denier 72 filament triangular cross-section yarn Thread processing speed 170 m / min Repeat unit for changing the yarn supply amount (SIN minute wave input signal ... Fig. 5) (h) 2 ms x 140-143 m / min Fluid disturbance Flow treatment nozzle pressure 6.0 kg / cm ² As a result, the following fan yarn was obtained.

Bulky part (large) Apparent thickness 1.5-2.
5 times deep dyeing part length 1.2 to 3.2 cm Bulky part (small) length 1.5 to 3.5 cm
Lightly dyed part When the yarn was used as a weft of a woven fabric having a polyester filament yarn of 75 denier, a product having a fine spot feeling and a span-like texture with a difference in shade was obtained.

Example 4 Thread processing was performed under the following conditions by the processing steps shown in FIG. Supplied yarn Polyester multi-filament yarn 75 denier 72 filament Triangular cross-section yarn Thread processing speed 300 m / min Yarn supply amount change repetition unit (SIN long periodic wave input signal ... Fig. 6) (i) 300 m / min (j) 471 m / min (k) 1 sec Fluid turbulence treatment nozzle pressure 6.0 kg / cm2 Bulky part (large) Apparent thickness 1.1 to 3.0 times ... Dark dyeing part length 1.1 to 1.3 cm Average apparent fineness 88 denier bulkiness Part (small) Length 2.3 to 2.7 cm ...
Light-colored part average apparent fineness of 78 denier When the yarn was used as a weft of a woven fabric having a polyester filament yarn of 75 denier, a product having a long-period bulky mottled feeling and a spanlike texture with a difference in shade was obtained.

[0028]

As described above, according to the fan yarn of the present invention, a portion having a small bulkiness is close to a straight raw silk state, has a high bunching property and is hardly opened, and therefore, is unwound. Good processability such as knitting and weaving properties. In addition, since it has a high bundling property, the surface and texture of the knitted and woven products are beautiful. The portion having a large bulkiness has a spindle-type slab shape having a large number of loops, entanglements, and slacks, and thus has a bulge and is good-looking. Since the length of the slab is randomly present in the longitudinal direction of the yarn, it is possible to obtain a span-like texture having a surface effect with a natural feeling in the length pattern of spots. In particular, by manufacturing the slab shape while controlling the thread supply amount by inputting a smooth SIN wave signal, it is possible to obtain a spindle-shaped thread shape having an extremely long foot and a smooth texture. Since the cycle of the thickness spots and the length spots can be freely changed by the input signal of the computer, there is no possibility that the period of the spots overlap and the irregular or striped spots occur.

[Brief description of drawings]

FIG. 1 is an external view showing an example of a fancy yarn according to the present invention.

FIG. 2 is a process drawing showing an example of the manufacturing method of the present invention.

FIG. 3 is a rectangular wave input signal diagram in Embodiment 1 of the present invention.

FIG. 4 is an input signal diagram of a SIN wave according to the second embodiment of the present invention.

FIG. 5 is an input signal diagram of SIN minute waves according to the third embodiment of the present invention.

FIG. 6 is an input signal diagram of a SIN long-period wave in Embodiment 3 of the present invention.

[Explanation of symbols]

1: Multifilament yarn 2: Feed roller 3: Water application roller 4: Fluid turbulence treatment nozzle 5: Delivery roller 6: Take-up roller 7: Computer device

Claims (4)

[Claims] 1. A yarn having a large bulkiness portion and a small bulkiness portion alternately exist in the longitudinal direction of the yarn, and the large bulkiness portion is formed in a spindle shape by loops, entanglements, sagging, and the like.
A fan yarn which is composed of a single filament multi-filament yarn in which the length of each portion is random in the longitudinal direction of the yarn. 2. The length of the bulky portion and the bulky portion is 0.5 cm or more, and the apparent diameter of the bulky portion is 1.1 to 7. The fan yarn according to claim 1, wherein the fan yarn is 0 times. 3. When a single filament multifilament yarn is subjected to a fluid injection treatment to impart bulkiness such as loops, entanglements, and slack, the yarn supply amount of the multifilament yarn is instantaneously regular or irregular. A method for producing a fan yarn, which is characterized in that: 4. The rising delay time or the falling delay time of the yarn supply is set to 30 ms or less with respect to the signal input point of the acceleration or deceleration commanded by the computer. A method for producing a fan yarn.