JPH04281029A - Fancy yarn and its production - Google Patents

Abstract

PURPOSE:To obtain the subject fiber containing alternately distributed specific bulky parts and non-bulky parts and composed of two or more multifilaments having excellent collectability by intermittently carrying out a fluid jet treatment, while applying a gyration treatment to the core yarn part and an injection-storage treatment to the core yarn part. CONSTITUTION:For example, a core-side multifilament yarn 1 is subjected to stationary gyration treatment (at the position of a gyration false-twisting nozzle 5) and a sheath-side multifilament yarn 2 is subjected to injection storage treatment (at the position of a storage injection nozzle 8). Two or more multifilament yarns (preferably polyamide yarn) produced by the above process are guided to a fluid injection nozzle 13 to apply intermittent fluid injection treatment and the product is subjected to entanglement treatment to obtain the objective fancy yarn having yarn length difference between the multifilament yarns and containing alternately distributed bulky parts and non-bulky parts in the longitudinal direction of the yarn, wherein said bulky part has a number of loops, entanglements or sags, the non-bulky part has entanglements part at the straight part and the length of each part is randomly distributed in the longitudinal direction of the yarn.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention comprises two or more multifilament yarns, in which bulky portions and non-bulky portions are alternately and randomly present in the longitudinal direction of the multifilament yarn, The present invention relates to a fancy yarn in which multifilaments have different yarn lengths, and a method for manufacturing the same, and more specifically, to a fancy yarn in which the length and thickness of each portion are arbitrary and excellent in 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 and fabric products made from conventional multifilament yarns due to their monotonous appearance and texture, and the surface has a rich variety due to natural unevenness in thickness and bulkiness. Effectiveness and fresh texture have been highly desired. As conventional techniques for solving these problems, for example, threads disclosed in JP-A-56-123428 and JP-A-56-123427 and a manufacturing method using negative pressure suction during retention have been proposed.

[0003] In JP-A-56-123428, a tube with negative pressure suction is used for the thread path during retention, so the device gets in the way, making it difficult to thread the thread, and thread breakage occurs due to negative pressure suction. This is not practical as it may reduce operability. Furthermore, since the straight portions of the obtained fancy yarns are not subjected to the focusing action, single yarns are likely to separate, especially in the case of composite yarns, which may lead to a decrease in passability in subsequent processes, or poor cohesiveness due to lack of focusing ability. This resulted in high costs, poor quality stability, and poor quality, such as uneven dyeing and rough surfaces.

0004

[Problems to be Solved by the Invention] In view of the above-mentioned points, an object of the present invention is to provide a method of looping the filament yarn to any length in the longitudinal direction without losing the excellent functions and characteristics of the conventional filament yarn. We provide a fun sea yarn made of a highly practical composite yarn that has a yarn shape with a natural flavor that varies in thickness, has been given entanglement, tangles, or slack, and has excellent cohesiveness and is highly practical, and a manufacturing method. That is.

[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. In other words, it is a fancy yarn consisting of two or more multifilament yarns, in which bulky portions and non-bulky portions alternate in the longitudinal direction of the yarn, and the bulky portion has a large number of loops, This is a part that is entangled or slack, and the non-bulky part is a part that is entangled in a straight part, and the length of each part is random in the longitudinal direction of the yarn, and the length of each part is random in the longitudinal direction of the yarn. is a fancy yarn characterized by having yarn length differences.

[0006] In addition, the above-mentioned method for manufacturing fancy yarn uses two or more multifilament yarns to perform a fluid jet treatment, and in a yarn processing method that imparts bulkiness to loops and sag, swirling is performed on the core yarn side. This is characterized in that the fluid injection process is performed intermittently while the injection and storage process is performed on the sheath yarn side.

The present invention will be explained in more detail below. First, a fancy yarn made of composite yarn will be explained. The bulky portion of the fancy yarn in the present invention is a portion composed of numerous loops, tangles, or slacks that have been subjected to fluid jetting treatment.

[0008] The yarn length of the above-mentioned bulky portion is determined by the intermittent action time, processing speed, excess supply rate, fluid injection pressure, etc., but is usually 2 to 3 minutes long for the short length portion.
cm, and the longest one is several tens of cm in length. Also,
In particular, a combination in which the length of the non-bulky portion is longer than that of the bulky portion is preferred, and an average length ratio of 1:3 to 1:10 is excellent. When the ratio is less than 1:3, the unevenness tends to look quite ostentatious and artificial, and when it is more than 1:10, the unevenness tends to be less noticeable. Note that this ratio can be easily changed in design by a control device 12 for injecting and stopping fluid shown in FIG. 2, which will be described later, that is, by computer control.

Furthermore, if the thickness of the bulky portion is converted into a yarn length difference, if the core yarn portion is 1, then the sheath yarn portion is 1.1 to 7.
Preferably, it is in the range of 0. When the difference in yarn length increases, the bulkiness increases, but the quality of the appearance tends to deteriorate, and when it decreases, the unevenness becomes less noticeable. More preferably,
It is in the range of 1.2 to 3.0. The length and thickness of the bulky portion may be regular or irregular, so-called random, and the combination of length and thickness can be set as appropriate depending on the use of the product.

[0010] The shape of the above-mentioned bulky part has a natural appearance having a spindle shape, and when added, it has an even smoother spindle shape. Next, the non-bulky portion is a straight portion where two or more filament yarns are bundled by interlacing. Light alternating twists are inserted into the core yarn of the straight portion about 5 to 50 times per meter, and there is virtually no twist.

[0011] The bulky parts and the non-bulky parts exist alternately in the longitudinal direction of the yarn, each having an arbitrary length.
The period may be regular or irregular. Regarding the length of the non-bulky part, if it is short, the bulky part will appear lively, and if it is long, it will be relatively calm, so the specific length is 10 cm to 300 m.
range is suitable.

Next, the multifilament composite yarn of the present invention is preferably made of thermoplastic synthetic fibers such as polyamide and polyester, and semi-synthetic fibers such as acetate and rayon. Filament yarn is suitable for forming unevenness,
Further, the larger the number of constituent filaments, for example, 36 or more in the case of a 75 denier multifilament yarn.

Furthermore, the use of denier mixed yarn, differential shrinkage mixed fiber yarn, deformed cross-section yarn, or a composite multifilament yarn that combines each of these yarns results in excellent texture and surface effects. That is, when the shrinkage rate of the core yarn is greater than that of the sheath yarn, the difference in yarn length increases and the bulk of the bulky portion increases. In particular, high shrinkage yarn or thick denier single fiber filament yarn is used as the core yarn, and low shrinkage yarn or fine denier single fiber filament yarn is used as the sheath yarn, for example, 1.
If 5 to 0.2 denier is used, or if the cross-sectional shape is triangular, pentagonal, octagonal, Y-shaped, etc., the texture will be softer and the drape will be better.

[0014] The combination of each denier of the core thread and sheath thread is as follows:
Generally, the yarn balance is better when the core yarn is thicker than the sheath yarn, but the opposite may be true. In addition, an irregularly shaped cross section such as a Y shape or a triangular shape is more preferable than a round shape because it is easier to form a portion with uneven thickness.

[0015] The yarn length difference is about 1 to 50%, preferably about 3 to 15% in the non-bulky part. In the bulky part, the excess supply amount and the shrinkage rate are added, so the range is substantially from 10 to 300%. Such a yarn length difference also contributes to the bulge of the non-bulky portion, so a product with a soft texture and good feel can be obtained.

An example of the external appearance of the yarn according to 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. In a processing method that gives bulkiness to loops and sag by intermittently applying fluid jet treatment to a multifilament of composite yarn, a pair of supply rollers is placed between two or more sets and a take-up roller. Thread formation is based on a thread processing system that performs fluid treatment.

First, a multifilament yarn serving as a core yarn is supplied from a feed roller at a constant excess supply rate to a processing area provided with a rotating temporary twist nozzle and a fluid injection treatment nozzle in the running order of the yarn. On the other hand, the multifilament yarn serving as the sheath yarn is supplied to a processing area provided with an ejector nozzle, an injection storage nozzle, and a fluid injection processing nozzle at a higher excess supply rate than the core yarn.

[0018] Here, to explain the case where the fluid injection treatment nozzle is operated intermittently, a loop or a bulky part is formed while the fluid is being injected, but when the fluid injection is stopped, the nozzle runs at an excessive supply rate. The excessive amount of yarn supplied from the multifilament yarn is absorbed on the core yarn side by the temporary twisting action of the rotating temporary twist nozzle, and on the sheath yarn side, the slack of the excessively supplied yarn is absorbed by the airflow emitted into the atmosphere by the jet storage nozzle. It is temporarily stored and forms a non-bulky part without forming a loop or a bulky part. When the fluid is ejected again, it forms loops and bulky parts, and this action is repeated intermittently.

The length and thickness of the bulky portion can be easily adjusted by adjusting the fluid injection stop time. In other words, as the stopping time increases, the amount of yarn accumulated increases, so the length of the bulky part becomes longer and the thickness becomes thicker. When the stop time is short, the amount of yarn accumulated is small, so naturally the yarn becomes shorter and thinner.

[0020] As an example of application, the fluid injection processing nozzle may be operated constantly, and the temporary rotating nozzle may be operated intermittently. In this case, while the fluid from the rotating temporary twist nozzle is injecting, loops and sagging are difficult to form and non-bulky parts are formed, and while the fluid is not being ejected, the excess yarn amount of the multifilament yarn running at an excessive supply rate is removed by the fluid injection nozzle. This forms loops and sagging. Further, the fluid injection processing nozzle and the temporary rotating nozzle may be operated alternately. next,
By irregularly controlling these intermittent actions under the conditions of the intermittent treatment, it is possible to produce fancy yarns having natural-looking uneven thickness and length.

[0021] A detailed explanation will be given based on the drawings. FIG. 2 is a process diagram showing an example of the manufacturing method of the present invention. first,
In FIG. 2, a multifilament yarn 1 serving as a core yarn is supplied from a pair of supply rollers 3, and a multifilament yarn 2 serving as a sheath yarn is supplied from a pair of supply rollers 4, with a constant distance between them and a take-up roller 15. Setting an excess supply rate of In the case where the fluid injection processing nozzle 13, which is a processing step, is provided with an ejector 6, a guide 7, a storage injection nozzle 8, and a guide 9 intermittently in the order in which the multifilament yarn 2 serving as the sheath yarn runs. Although the rotating temporary twist nozzle 5 is kept in operation at all times, the effect of turbulence processing becomes smaller when a strong pressure action is applied, so yarn amount absorption while the fluid jet processing action is stopped is performed using the minimum necessary weak action, that is, when the fluid jet processing action is stopped. It's about lowering the pressure. For example, a pressure of 1 kg/cm2 or less is suitable for a 75 denier multifilament yarn. In order to cause the fluid injection treatment nozzle 13 to act intermittently, the computer control device 12 controls the solenoid valve 11 to eject and stop the fluid. Note that the water application device 10 is effective in stably forming loops and sag.

FIG. 3 is a detailed diagram showing the storage injection state in FIG. 2. In FIG. 3, when the fluid injection treatment nozzle 13 is activated, the yarn path becomes straight as shown in 18, and when the action is stopped, the spray from the injection nozzle 8 draws a circular arc as shown in 17, allowing storage and jetting. . Therefore, the thread path vibrates as shown in 17 and 18 in accordance with the intermittent processing. Note that it is preferable to perform the entanglement process 14 for the purpose of giving convergence to the yarn while the fluid jetting process is stopped, blowing off water from the yarn to which water has been applied, and preventing the yarn from winding around the roller.

[0023] As an application example, an intertwined nozzle may be used instead of the fluid jet nozzle as long as it can form a loop, entanglement, or slack. Furthermore, before rolling up the cheese 16, it is possible to perform a reheating setting. Further, the injection nozzle 8 and the rotating nozzle 5 may be omitted and only the ejector nozzle 6 may be used instead.

[0024]

[Example] Processing was carried out using the processing steps shown in FIG. 2 under the following conditions. Supply yarn Core yarn: Polyester filament yarn 50 denier, 24 filament triangular cross section yarn Sheath yarn: Polyester filament yarn 50 denier, 72 filament round cross section yarn Excess supply rate Core yarn: +3% Sheath yarn:
+5% Rotating temporary nozzle constant pressure 0.5kg/cm2 Ejector nozzle pressure 0.5kg/cm2
Storage injection nozzle pressure 1.5kg/c
m2 Fluid injection processing nozzle pressure 6.0kg/c
m2 Turbulence processing nozzle average processing time 50m
sec turbulence processing nozzle average non-processing time 200mse
c Take-up roller speed 30
The length of the bulky part of the yarn obtained under the above conditions is 10 cm on average, and the thickness is 170 denier.The length of the non-bulky part is on average 58 cm, and the thickness is 111 denier. /m was applied to the weft of a woven fabric, resulting in a product with a shantung-like appearance with a natural uneven feel and a spun-like texture.

[0025]

[Effects of the Invention] According to the fancy yarn of the present invention as described above, first, the non-bulky portion is similar to straight raw silk, but it is intertwined, so it has high cohesiveness and does not separate. , it has good process passability in terms of unwinding property and knitting/weaving property. Furthermore, since the cohesiveness is high, the surface and structure of the knitted fabric have a good aesthetic appearance.

[0026] The variation in the thickness and length of the yarn between the bulky part and the non-bulky part gives a natural look and has an excellent aesthetic effect. The texture of the fabric is based on a spun-like texture due to the inherent difference in thread length. If the denier of the filament yarn used for the sheath yarn is thinner, a product with a softer touch can be obtained, and if monofilament filament yarns with different shrinkage rates are used, a product with a fuller feel can be obtained.

[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 showing the storage injection state of FIG. 2. FIG.

[Explanation of symbols]

1: Core yarn side multifilament yarn 2: Sheath yarn side multifilament yarn 3: Supply roller 4: Supply roller 5: Rotating temporary twisting nozzle 6: Ejector nozzle 7: Guide 8: Storage injection nozzle 9: Guide 10: Water application roller 11: Solenoid valve 12: Control device 13: Fluid injection nozzle 14: Intertwining nozzle 15: Take-up roller 16: Rolled cheese

Claims (6)

[Claims] Claim 1: A fancy yarn consisting of two or more multifilament yarns, in which bulky portions and non-bulky portions alternate in the longitudinal direction of the yarn, wherein the bulky portions are numerous. The non-bulky part is a straight part that is intertwined, and the length of each part is random in the longitudinal direction of the yarn. Fancy yarn is characterized by yarns having different yarn lengths. Claim 2: In a yarn processing method in which two or more multifilament yarns are subjected to a fluid jet treatment to impart bulkiness to loops and sagging, a swirling treatment is regularly applied to the core yarn side, and the sheath is A method for manufacturing fancy yarn, characterized in that a fluid jetting treatment is intermittently performed while a jetting storage treatment is applied to the yarn side, and then an interlacing treatment is performed. [Claim 3] In a yarn processing method in which two or more multifilament yarns are subjected to a fluid jet treatment to impart bulkiness to loops and sag, the fluid jet treatment is constantly performed and the yarn is turned to the core yarn side. A method for manufacturing fancy yarn, characterized in that treatment is applied intermittently and injection storage treatment is applied to the sheath yarn side. [Claim 4] In a yarn processing method in which two or more multifilament yarns are subjected to fluid jetting treatment to impart bulkiness to loops and sag, swirling treatment on the core yarn side and fluid jetting treatment are performed alternately. A method for producing fancy yarn characterized by subjecting the sheath yarn side to an injection storage treatment. 5. The method for producing fancy yarn according to claim 2, wherein the entangling treatment is performed within the same excess supply. 6. The method for producing fancy yarn according to claim 2, wherein the core yarn side and the sheath yarn side are subjected to an injection and storage treatment.