JPH04281030A - Fancy yarn and its production - Google Patents

Abstract

PURPOSE:To obtain a fancy yarn containing a bulky part having loop, etc., and a non-bulky part consisting of straight part, resistant to opening even by using a single filament and giving a woven or knit fabric having excellent beautiful appearance by applying fluid jet treatment to a multifilament yarn. CONSTITUTION:A multifilament yarn (preferably modified cross section yarn, etc., of polyester, etc.) supplied at a specific excess feed ratio is passed through a processing zone containing an injection storage nozzle 5, a turbulent flow treatment nozzle 10 and an entangling nozzle 11 and subjected to intermittent fluid injection treatment to obtain the objective fancy yarn containing alternately distributed bulky parts and straight entangled parts in the longitudinal direction of the yarn, wherein said bulky part has loops, entanglements or sags and the length of each part is randomly distributed in the longitudinal direction of the yarn.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a fancy yarn in which bulky portions and non-bulky portions are alternately and randomly present in the longitudinal direction of the yarn, and a method for manufacturing the same. The present invention relates to a fancy yarn having arbitrary length and thickness and excellent cohesiveness, and a method for manufacturing the same.

0002

[Prior Art] Traditionally, knitted fabric products using multifilament yarns have established a position in clothing because they have excellent functional characteristics such as stretchability, bulkiness, and wrinkle resistance. Ta. However, in recent years, there has been a growing tendency for consumers to avoid knitted fabric products using conventional multifilament yarns due to their monotonous appearance and texture. Surface effects and fresh textures have been highly desired. As a conventional technique for solving these problems, for example, Japanese Patent Laid-Open No. 123428/1982 and Japanese Patent Laid-Open No. 123427/1982 have been proposed.

[0003] This relates to a method for producing fancy yarn using a negative pressure suction method during retention, and Japanese Patent Application Laid-open No. 123428/1983 discloses that a negative pressure suction tube is used in the yarn guide during retention. This is not practical because the device gets in the way and makes it difficult to thread the thread, and the negative pressure suction causes the thread to get tangled and break easily, reducing operability. Furthermore, since the straight portion of the obtained fancy yarn is not subjected to the focusing action, single fibers are likely to separate, reducing passability in subsequent processes, and causing insufficient matting, resulting in differences in dyeing, resulting in high costs. This may have caused problems, or the quality may have been unstable.

0004

[Problems to be Solved by the Invention] In view of the above-mentioned points, an object of the present invention is to maintain the excellent functions and characteristics of the conventional filament yarn, and to provide a method that allows the filament yarn to be formed intermittently and arbitrarily in the longitudinal direction of the filament yarn. It is an object of the present invention to provide a fancy yarn having a naturally varied yarn form in which loops, entanglements, slacks, etc. are imparted to the length and thickness, and a method for producing the same.

[0005]

Means for Solving the Problems The fancy yarn and method for manufacturing the same of the present invention that achieve the above-mentioned objects have the following configuration. That is, it is a fancy yarn in which bulky parts and non-bulky parts alternate in the longitudinal direction of the yarn, and the bulky part is a part with many loops, entanglements, or slacks, The non-bulky portion is a straight portion that is intertwined, and the length of each portion is random in the longitudinal direction of the yarn, which is a fancy yarn.

[0006] The above-mentioned fancy yarn is produced by performing fluid jetting treatment intermittently while performing jetting storage treatment in a yarn processing method in which multifilament yarn is subjected to fluid jetting treatment to impart bulkiness such as loops and slack. It can then be obtained by fluid entangling treatment.

The present invention will be explained in more detail below. First, regarding fancy yarn, the bulky portion is a portion composed of numerous loops, entanglements, or slacks that have been subjected to fluid jetting treatment. The length of the yarn in the above-mentioned bulky portion is determined by the intermittent action time, processing speed, excess supply rate, fluid injection pressure, etc., and is usually 2 to 3 cm for short lengths and several tens of cm for long ones.
It has a length of Also, regarding the thickness of the bulky part,
If the straight portion of the single-filament multifilament yarn is defined as 1, it is preferably within a range of 1.5 to 3.0 times the apparent yarn diameter.

[0008] The length and thickness of the bulky portion are regular or irregular, so-called random. Further, the combination of length and thickness should be appropriately selected depending on the intended use of the final product. Since the bulky portion has a spindle shape, it has a natural appearance. In particular, a combination in which the yarn length of the non-bulky part is longer than that of the bulky part is preferable, and the average length ratio is 1:2.
A range of ~1:100 is excellent and looks elegant and natural. Note that this ratio can be easily changed by a control device 9, ie, computer control, for injecting and stopping the fluid shown in FIG. 2, which will be described later.

[0009] The texture of the fabric is based on raw filament yarn, but the presence of uneven areas gives it a spun-like texture. The finer the denier of the filament yarn used, the softer the touch, and the use of monofilament filament yarns with different shrinkage rates gives the product a fuller feel. The non-bulky part is a straight part, and is a part converged by interlacing. This is made by converging the straight portions, which are not subjected to the fluid jetting treatment and are easy to spread, through the entangling treatment.

[0010] The bulky part and the non-bulky part exist in the longitudinal direction of the yarn with arbitrary lengths and thicknesses, respectively.
The alternating period of length may be regular or irregular. However, the former gives a surface effect with an artificial feel, whereas the latter is preferable because it provides a surface with a natural feel.

Next, the multifilament yarn of the present invention may be either thermoplastic synthetic fiber or semi-synthetic fiber. However, among thermoplastic synthetic fibers, polyester threads and polyamide threads are preferred, especially denier mix threads,
Different shrinkage blend yarns, modified cross-section yarns, and composite multifilament yarns that combine each of these yarns are used to create different textures,
It is more preferable since it has excellent surface effects. An example of an external view of the yarn form of the present invention is shown in FIG. A indicates a non-bulky straight part, and B indicates a bulky part.

Next, the manufacturing method will be explained. This is a processing method that gives bulky parts such as loops and slacks in a fancy manner by intermittently applying fluid jet treatment to multifilament yarn, and is performed in a processing system formed by a pair of supply rollers and a take-off roller. The multifilament yarn traveling at a constant excess supply rate is supplied to a processing area provided with an injection storage nozzle, a turbulence treatment nozzle, and an entangling nozzle in the order of travel.

[0013] If the turbulence processing nozzle is operated intermittently, loops or slack bulky parts are formed while the fluid is being ejected, but when the fluid is not being ejected, the running multifilament yarn is oversupplied. The injection storage nozzle injects and discharges the amount into the atmosphere and temporarily stores it, forming a non-bulky portion without forming a bulky portion such as a loop or sag. When the fluid is ejected again, it forms a loop or a bulky part, and this action is repeated intermittently.

[0014] Generally, when the stop time of turbulence treatment becomes longer,
The yarn length in the bulky portions of loops and slacks increases, and when the oversupply rate increases, the thickness of the bulky portions of loops and slacks increases, making it possible to produce fancy yarn with uneven yarn bulkiness. . By irregularly controlling these intermittent actions, it is possible to produce fancy yarn with natural-looking uneven length and thickness.

[0015] A detailed explanation will be given based on the drawings. First, in FIG. 2, the multifilament yarn 1 is set to have a constant excess supply rate between the pair of supply rollers 2 and the take-up roller 12, and the multifilament yarn 1 is run in the following order: It is supplied to a processing area provided with an ejector nozzle 3, a guide 4, an injection nozzle 5, a guide 6, a water application device 7, a turbulence treatment nozzle 10, and an entangling nozzle 11.

The multifilament yarn 1 is a synthetic fiber such as polyamide or polyester, or a semi-synthetic fiber such as acetate or rayon. Among them, polyamide or polyester multifilament yarn is suitable for forming unevenness, and the one with a larger number of constituent filaments (for example, 36 or more for a 75 denier multifilament yarn), and the Y-shape, rather than the round, Irregular cross-sections, such as triangular, are preferable because uneven thickness portions are easily formed, and high-quality products can be obtained by combining denier mixes, differential shrinkage blends, and the like.

When the turbulence treatment nozzle 10 is operated intermittently, the ejector 3 and the injection nozzle 5 are kept in operation at all times, but it is sufficient that the pressure action is sufficient to ensure the thread path of the multifilament yarn 1. In other words, while the turbulence processing action is stopped, the amount of yarn may be stored at the minimum necessary pressure. For example, for a 75 denier multifilament yarn, 0.1~
A low pressure of 2 kg/cm2 is suitable.

In FIG. 3, when the turbulence treatment nozzle 10 is activated, the yarn path becomes straight as shown at 15.
When the action is stopped, an arc can be drawn as shown in 14 under the influence of the injection nozzle 5, and the injection can be stored. Therefore,
The thread path 16 vibrates in accordance with the intermittent processing.

In order to operate the turbulence treatment nozzle 10 intermittently, the control device 9 controls the solenoid valve 8 to inject and stop the fluid. Note that the water application device 7 is effective in stably forming loops and slack. After applying the action intermittently, the yarn is entangled with the interlacing treatment nozzle 11, and then the cheese 13
It is rolled up.

[0020] Although the entanglement treatment may be carried out in a separate process, it is useful to give convergence to the yarn while the fluid jetting is stopped in the turbulent flow treatment, or to blow off the water from the water-applied yarn to prevent the yarn from winding around the roller. In order to achieve this, it is preferable to carry out the turbulence treatment and the same excess supply. As an application example, an entangled nozzle may be used instead of the turbulence treatment nozzle as long as it forms a loop, entanglement, or slack. Furthermore, before rolling up the cheese 13, it is possible to perform a reheating setting. Alternatively, the injection nozzle 5 may be omitted and only the ejector nozzle 3 may be used instead of the injection storage nozzle.

[0021]

[Example] Processing was carried out using the processing steps shown in FIG. 2 under the following conditions. Supply yarn Polyester filament yarn 75 denier 72 filament triangular cross section yarn Excess supply rate +5% Ejector nozzle constant pressure 0.5 kg/
cm2 Turbulence treatment nozzle pressure
6.0kg/cm2 Turbulence processing nozzle average processing time
50msec turbulence processing nozzle average non-processing time
150msec take-up roller speed
300m/in entangling nozzle pressure
2.5 kg/cm2 Variation in processing time (random) 0 to 50 ms The length of the bulky part of the yarn obtained under the above conditions was 12 cm on average, and the thickness was 15 cm.
2 denier, the average length of the non-bulky portion was 115 cm, the thickness was 76 denier, and the number of entanglements inserted in the non-bulky portion was 105 per 1 m. When this yarn was used as the weft of a woven fabric, a product with a shantung-like appearance with a natural uneven feel and a spun-like texture was obtained.

[0022]

[Effects of the Invention] According to the fancy yarn of the present invention as described above, bulky parts having a large number of loops, entanglements, and slacks and non-bulky parts exist alternately in the longitudinal direction of the yarn. It is a fancy yarn, and the non-bulky part is a straight raw silk part, but there is a slight bulge intertwined part, and it has high cohesiveness and even if it is a single yarn, it rarely opens. It has good unravelability and processability in knitting and weaving, and the surface and texture of the knitted fabric are excellent.In addition, the variation in yarn thickness and length between bulky and non-bulky areas creates a natural aesthetic appearance. The effect will be excellent.

[Brief explanation of the drawing]

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

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

3 is a detailed explanatory diagram of the injection reservoir in FIG. 2. FIG.

[Explanation of symbols]

1: Multifilament yarn 2: A pair of supply rollers 3: Ejector nozzle 4: Guide 5: Injection storage nozzle 6: Guide 7: Water application device 8: Solenoid valve 9: Control device 10: Turbulence treatment nozzle 11: Intertwining nozzle 12: Take-up roller 13: Cheese 14: Arc 15: Straight state 16: Vibration state

Claims (3)

[Claims] Claim 1: A fancy yarn in which bulky portions and non-bulky portions alternate in the longitudinal direction of the yarn, where the bulky portion has many loops, entanglements, or slacks. A fancy yarn characterized in that the non-bulky part is a straight part and an intertwined part, and the length of each part is random in the longitudinal direction of the yarn. [Claim 2] In a yarn processing method in which a multifilament yarn is subjected to a fluid jet treatment to impart bulkiness such as loops and slack, the fluid jet treatment is performed intermittently while performing a jet storage treatment, and then a fluid entanglement treatment is performed. A method for producing Huanshi yarn characterized by the following. 3. The method for producing fancy yarn according to claim 2, wherein after the fluid jetting treatment, the fluid entangling treatment is performed within the same excess supply.