JP3070077B2 - FANCY YEAR AND PROCESS FOR PRODUCING THE SAME - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Industrial applications]

The present invention relates to a method for producing a fan sea yarn in which a bulky portion and a non-bulky portion are randomly present in the longitudinal direction of the yarn.More specifically, the length of each portion is arbitrary, and the yarn length difference is reduced. The present invention relates to a method for producing a fan yarn having excellent bunching properties, comprising a composite yarn having the same.

[0002]

[Prior art]

BACKGROUND ART Conventionally, knitted and woven fabric products using multifilament yarns have been established in a garment since they have functionally superior characteristics such as elasticity, bulkiness, and wrinkle resistance. However, in recent years, the conventional multifilament yarn knitted and woven products have become more apt to be shunned by consumers in terms of their monotonous appearance and feeling, and have a variety of surfaces resulting from natural thickness, spots, and bulkiness. The effect and fresh feeling have been strongly desired.

[0003] Techniques for imparting a loop, entanglement, or slack at an arbitrary length in the longitudinal direction of a filament yarn include:
For example, JP-A-56-123428 and JP-A-56-123427 have been proposed. In particular, in the production method, there is a method of suctioning a negative pressure during staying.

In Japanese Patent Application Laid-Open No. 56-123428, since a tube for suctioning negative pressure is used for the yarn path during staying, the device is obstructed and it is difficult to thread the yarn. Since it is easy to generate, the operability may be reduced and it is not practical.In addition, the straight part of the obtained FUAN sea yarn is not subjected to the bunching action, so the separation of the single yarn is particularly difficult in the case of a composite yarn. It is easy to occur, leading to a decrease in post-process passability, insufficient convergence, insufficient peeling and dyeing differences, and rough surface of the product. It was lacking.

[0005]

[Problems to be solved by the invention]

In view of the above, an object of the present invention is to improve these disadvantages, without losing the excellent functions and features of the conventional filament yarn, and furthermore, to form a loop or a loop with an arbitrary length in the yarn longitudinal direction of the filament yarn. It is an object of the present invention to provide a method for producing a fan sea yarn made of a composite yarn having a tangled or sagged shape, a yarn shape having a rich natural taste and a variable thickness, and also having excellent bunching properties. .

[0006]

[Means for Solving the Problems]

A method for producing a fan sea yarn which achieves the above object has the following configuration.

[0007] That is, by performing a fluid jetting process using two or more multifilament yarns, a core yarn and a sheath yarn are separately supplied in a core / sheath type bulky processing method for imparting a loop or a tarmi. And intermittent fluid injection processing of the core / sheath yarn within the same supply while performing the swirling processing on the core yarn side.

[0008] Furthermore, in a core / sheath bulking method for imparting loops and / or lumps by subjecting two or more multifilament yarns to fluid injection treatment, the core yarn and the sheath yarn are separately supplied. In addition, a fluid ejection process is performed on the core / sheath yarn within the same supply while performing an intermittent turning process on the core yarn side.

Hereinafter, the present invention will be described in more detail. First, a description will be given of a fan yarn made of a composite yarn obtained by the present invention.

[0010] The bulky portion is a portion composed of a large number of loops, entanglements, or slacks that have been subjected to the fluid ejection processing.
The length of the bulky portion is determined by the intermittent operation time, the processing speed, the excess supply rate, the fluid ejection pressure, and the like.
The short part is 2-3cm long and the long one is several 10cm long. If the thickness of the bulky portion is converted into a yarn length difference, the sheath yarn portion is preferably in the range of 1.01 to 3.00, where the core yarn portion is 1. In other words, if the yarn length difference increases, the bulkiness becomes too high, and the quality of the appearance tends to decrease,
If the amount is small, the unevenness will not be noticeable.

The length and thickness of the bulky portion have a regular or irregular so-called randomness. The combination of the length and the thickness is appropriately selected depending on the use of the final product.

[0012] Furthermore, in the fancy yarn made of the composite yarn obtained by the present invention, the variation in the thickness and length of the yarns in the bulky portion and the non-bulky portion provides excellent natural aesthetic effects. In particular, a combination in which the yarn length of the non-bulky portion is longer than that of the bulky portion is preferable, and an average length ratio of 1:10 or more is excellent. At 1:10 and below, the irregularities look quite flashy and artificial, and above that they look elegant and natural.

Regarding the thickness, the bulky portion is preferably 50 to 280% thicker in average denier than the non-bulky portion, and 100 to 250% thicker.
However, there is a feeling of natural unevenness. When it exceeds 350%, the appearance becomes closer to a pongee-like appearance.

On the other hand, the bulky portion has a natural appearance having a spindle shape, and the added effect is more significant.

Next, the non-bulky portion is a straight portion in which two or more filament yarns are bundled by right and left twists. The right and left twists of the straight portion are made of light alternate twists and are virtually twist-free. The range of the number of twists varies depending on the thickness of the yarn and the processing conditions, but is about 5 to 50 times per meter.

[0016] The twisting due to the light twisting converges a straight portion that is easy to open in a later process.

The bulky portion and the non-bulky portion each have an arbitrary length and are alternately present in the yarn longitudinal direction, and the alternating period may be either regular or irregular. Good.

When the length of the non-bulky portion is short, the bulky portion appears lively, and when the length is long, it becomes relatively noticeable as a natural feeling. For specific length, 10cm ~ 300c
A range of m is suitable.

Next, the composite yarn obtained by the present invention is composed of a multifilament yarn, and is preferably a thermoplastic synthetic fiber or a semi-synthetic fiber. Among the thermoplastic synthetic fibers, polyester yarn and polyamide yarn are particularly suitable.Denile mixed yarn, shrinkage difference mixed fiber yarn, deformed cross-section yarn, or composite type multifilament yarn combining them is particularly suitable. It is excellent in surface effect.

When the contraction rate of the core yarn is larger than that of the sheath yarn, the yarn length difference increases and the bulkiness of the bulky portion increases. The yarn length difference is
It is about 1 to 50%, preferably about 3 to 15% in the non-bulky portion.
In the bulky part, excess supply and shrinkage are added, so
Become a wide range of 10-300%. The difference in yarn length also contributes to the swelling of the non-bulky portion, so that it is possible to obtain a product with a soft feel and a good feel.

Further, when the sheath yarn is a single-filament filament yarn having a small denier, for example, 1.5 to 0.2 denier, or the cross-sectional shape is triangular, pentagonal, octagonal, Y-type, or the like,
The feeling is softer and the drape is better.

The combination of the denier of the core yarn and the sheath yarn is generally
The core yarn is thicker than the sheath yarn so that the balance of the yarn is better, but may be reversed.

FIG. 1 shows the appearance of a yarn form of a composite yarn obtained by the present invention comprising a composite yarn. A shows a non-bulky straight part, and B shows a bulky part.

Next, a method for producing a fan sea yarn of the present invention will be described.

In a processing method in which the multifilament of the composite yarn is intermittently subjected to a fluid injection treatment to give the bulkiness of the loop or the tarmi in a fancy manner, two or more pairs of supply rollers, a take-up roller, This is a process in which a yarn is formed by a yarn processing system in which fluid treatment is performed during the process. First, the multifilament yarn running at a constant excess supply rate serving as a core yarn is supplied to a processing area provided with a rotating temporary twist nozzle and a turbulent flow processing nozzle in the running order of the yarn.

On the other hand, the multifilament yarn serving as the sheath yarn is directly supplied to the turbulence processing nozzle at an excess supply rate larger than that of the core yarn. In addition, you may provide a rotation temporary twist nozzle similarly to a thread.

Here, the case where the turbulence processing nozzle is intermittently operated will be described. If the fluid is being ejected, a loop or a bulky portion is formed, and the fluid travels at an excessive supply rate while the ejection of the fluid is stopped. The excessively supplied yarn amount of the multi-filament yarn is absorbed by the temporary twisting action of the swirling temporary twisting nozzle, and the looseness of the excessively supplied yarn is apparently eliminated, thereby stabilizing the yarn processability. The composite yarn in this portion forms a non-bulky portion.

In the supply of the sheath yarn, a loop or a bulky portion of the slack is formed during the ejection of the fluid, but the multifilament yarn traveling at the excessive supply rate is temporarily loosened while the ejection of the fluid is stopped. In order to enhance the performance, it is better to pass through a partition plate or a cylinder.

The length and thickness of the bulky portion can be easily controlled by the fluid injection stop time. In other words, the longer the stop time, the larger the amount of the thread pool, so that the length of the bulky portion increases and the thickness increases. When the stop time is short, the amount of the thread pool is small, so that the length is naturally short and thin.

On the other hand, a case where the swiveling temporary twist nozzle is intermittently operated will be described. If the fluid of the swiveling temporary twist nozzle is ejected, a loop or sagging is hardly formed, and a non-bulky portion is formed. The turbulence processing nozzle forms a loop or slack in the excess yarn flow of the multifilament yarn running at an excessive supply rate. Note that the turbulence processing nozzle and the swirling temporary twist nozzle may be alternately operated.

Next, as for the conditions of the intermittent fluid treatment,
In general, when the action time of the turbulent flow treatment increases, the yarn length of the loop or the bulky portion of the slack increases, and the excess supply rate increases, or if the excess supply length, that is, the interval between the supply roller and the fluid processing nozzle is increased, The bulky portions of the loops and tarmi become thicker, and it is possible to produce a fan sea yarn having unevenness in the bulkiness of the yarn. Also, when the action time of the turning temporary twist becomes longer, loops and slacks are less likely to be formed, and alternate twists are given to give the straight portion of the multifilament yarn a convergence property. By controlling the thickness, it is possible to produce a fanci yarn having a thickness unevenness and a length unevenness with a natural feeling. This will be specifically described with reference to the drawings. First, in FIG. 2, a multifilament yarn 1 serving as a core yarn is supplied from a pair of supply rollers 2, and a multifilament yarn 3 serving as a sheath yarn is supplied from a pair of supply rollers 4. This is a processing step in which the rotating temporary twist nozzle 5, the water application device 6, and the turbulence processing nozzle 7 are provided in the order in which the yarns of the traveling multifilament 1 are set at a constant excess supply rate and travel.

The multifilament yarns 1 and 3 use synthetic fibers such as polyamide and polyester, and semi-synthetic fibers such as acetate and rayon. Above all, a multifilament yarn of polyamide or polyester is suitable for forming unevenness, and one having a large number of constituent filaments is suitable. For example, in the case of a 75-denier multifilament yarn, the number is preferably 36 or more. In addition, irregular cross-sections such as Y-shaped and triangular are more preferable than the round-shaped ones because the thickness unevenness portion is more easily formed, and a high-quality product can be obtained by further combining denier mix, differential shrinkage mixing and the like. In particular, using a high-shrink yarn or a thick denier monofilament filament yarn as the core yarn,
It is preferable to use a low-density yarn for the sheath yarn and a fine denier for the single fiber filament yarn.

First, in the process of intermittently acting the turbulence processing nozzle 7, the temporary swivel nozzle 5 is always operated. However, if a strong pressure action is applied, the effect of the turbulence processing is reduced, so the turbulence processing effect is reduced. Yarn volume absorption during the cessation of the flow treatment action is a necessary minimum weak action, namely a reduction in fluid pressure. For example, for a 75-denier multifilament yarn, 1 kg / cm ²
The following pressures are suitable.

In order for the turbulence processing nozzle 7 to act intermittently, the injection and stop of the fluid by the electromagnetic valve 8 are performed by the computer control device 9. The ratio between the bulky portion and the non-bulky portion can be easily changed by the control device 9, ie, computer control, for injecting and stopping the fluid.

The water application device 6 is necessary for stable formation of loops and slack.

After the action is applied intermittently, the cheese is rolled up 11 times.

Next, in the case of the step of intermittently operating the temporary swirling nozzle 5, the turbulence processing nozzle 7 is always operated. However, if a weak operation is given, the effect of the temporary swirling processing is small. Therefore, increase the fluid pressure. For example, 3 kg / cm ² for a 75 denier multifilament yarn
The above pressure.

Since the pressure of the turbulence processing nozzle 7 is high, it is necessary to increase the action of the temporary swiveling twist. Therefore, the pressure applied intermittently is preferably a relatively high pressure.

The former process is more preferable from the viewpoint of energy cost, processability, and bulkiness of loops and slacks.

As an application example, an entangled nozzle may be used instead of the injection nozzle. Further, before the cheese 11 is rolled up, a reheating set can be performed to improve the texture, or the thickness can be further improved by adding additional heat to the spindle.

[0041]

【Example】

Processing was performed under the following conditions by the processing steps shown in FIG.

Supply yarn Core yarn: Polyester filament yarn 50 denier 24 filament triangular cross-section yarn Sheath yarn: Polyester filament yarn 60 denier 144 filament round cross-section yarn Excessive supply ratio Core yarn: + 5% Sheath yarn: + 7% Constant pressure of swirling temporary twist nozzle 0.5 kg / cm ² bulky portions of the turbulence processing nozzle pressure 6.0 kg / cm ² turbulence processing nozzle average processing time 30msec turbulent treatment nozzle non average processing time 200msec take-up roller speed of 300 meters / min yarn obtained in the above conditions Average length of 15
cm, thickness 151 denier, non-bulky part average length 101c
m, the thickness was 118 denier, and the number of alternating twists inserted in the non-bulky portion was 21 times per meter on average. When the yarn was subjected to a 200 t / m extra linen in the S direction and used for the weft of the fabric,
A product having a spun-like texture with a shantane-like appearance with a natural unevenness was obtained.

[0043]

【The invention's effect】

According to the Huanshi yarn obtained by the present invention as described above, first, the non-bulky portion is a portion close to a straight raw silk, but slightly twisted left and right, that is, alternately twisted, is inserted, so that the convergence is low. Even if it is a high composite yarn, it is less likely to be separated, so that the processability of unwinding and knitting and weaving is good.

Further, since the convergence is high, the surface and texture of the knitted fabric are good.

Variations in the thickness and length of the yarn in the bulky portion and the non-bulky portion provide excellent natural aesthetic effects.

The feeling of the fabric is based on the raw yarn of the filament yarn,
Due to the yarn length difference, it has a spun like feel. If the denier of the filament yarn used for the sheath yarn becomes thinner, a soft touch can be obtained, and if a monofilament filament yarn having a different shrinkage ratio is used, a product with a fullness can be obtained.

[Brief description of the drawings]

FIG. 1 is an external view showing an example of a fan sea yarn obtained by the present invention, and FIG. 2 is a process chart in a manufacturing method of the present invention. B: Non-bulky straight part B: Bulky part 1: Multifilament yarn 2: Supply roller 3: Multifilament yarn 4: Supply roller 5: Rotating nozzle 6: Water application roller 7: Fluid injection nozzle 8: Solenoid valve 9: Control device 10: Take-up roller 11: Take-up roller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D02G 3/24-3/38 D02G 1/02-1/16

Claims (3)

(57) [Claims] 1. A core / sheath type bulking method for imparting loops and / or lumps by subjecting two or more multifilament yarns to a fluid injection treatment to separately supply a core yarn and a sheath yarn. A method of producing a fan sea yarn, wherein an intermittent fluid injection treatment is performed on a core / sheath yarn in the same supply while performing a turning treatment on a core yarn side. 2. A core / sheath bulking method for providing loops and / or lumps by subjecting two or more multifilament yarns to a fluid injection treatment to separately supply a core yarn and a sheath yarn. , While performing intermittent turning treatment on the core yarn side,
A method for producing a fan sea yarn, wherein a fluid jetting treatment is applied to a sheath yarn within the same supply. 3. The method according to claim 1, wherein the swirling process and the fluid jetting process are alternately performed within the same supply.