JPH0726276B2 - Manufacturing method of bulky processed yarn - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for producing a bulky processed yarn having a highly efficient and stable loop shape.

[Prior Art] Bulkiness processing methods include a temporary twisting method, a rubbing method, a shaping method, and an air injection method. Above all, the demand for the bulky thread by the air injection method exhibiting a spun yarn-like texture is surely increasing. There is.

In response to this background, demands for high quality and high productivity are increasing, and as a matter of course, the approach to high performance of nozzles is actively pursued.

[Problems to be Solved by the Invention] However, currently commercially available nozzles (for example, manufactured by Hebaline Co., Ltd.)
As long as the Hema Jet) is used, a stable loop is often not obtained under a high-speed region where the yarn processing speed is 600 m / min or more.
In particular, the part in which the loops are not arranged continuously, that is, the part in the form of a thread in which the loop-shaped part and the part that does not form the loop appear alternately, this is called an intermittent loop in the industry. When it is made into a fabric, the surface quality is not smooth (meaning a grainy texture), and it gives a muddy feeling, which significantly deteriorates the beauty and the high-class feeling. Further, the loop retention itself is poor, and there is a drawback that the target bulkiness cannot be obtained.

An object of the present invention is to solve the above-mentioned problems of the conventional method, to provide a bulky yarn which causes continuous loops in the axial direction of the yarn and has stable loop holding property, and particularly 600 m. An object of the present invention is to provide a method capable of stably producing a loop-shaped bulky yarn even at a high speed of not less than / minute.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention has the following configuration.

(1) At the time of fluid-processing a multi-filament yarn using at least an air jet nozzle device, a yarn vibration preventing member made of a rod-shaped object or a plate-shaped object is provided in a yarn guide passage in the air injection nozzle device. A method for producing a bulky textured yarn, which is characterized by the following.

The present invention will be described in more detail below.

The multifilament yarn referred to in the present invention is mainly composed of thermoplastic synthetic fibers such as polyethylene terephthalate, polybutylene terephthalate, polyamide and polyacrylonitrile. Fibers and the like are also applicable.

The multifilament yarn may be any of undrawn yarn, semi-drawn yarn and drawn yarn, but drawn yarn is preferable.

The cross-sectional shape, yarn fineness, single fiber fineness and cross-sectional shape are not particularly limited, and raw yarn, processed yarn, presence or absence of twist are not particularly limited.

In the method for manufacturing the bulky textured yarn of the present invention, a supply roller device, a feeding device, and a winding device are used in addition to the air jet nozzle device.

The supply roller device may be a rotating device having a yarn nip function. As a matter of course, it is advisable to attach a yarn guide or a yarn travers device around the device.

Regarding the air injection nozzle device used in the present invention, the nozzle device may be of a pipe type in which the yarn guide passage is a closed system, or a type in which the yarn guide passage is opened during yarn introduction and closed after yarn introduction. obtain.

The air injection nozzle device is a commonly used nozzle having a yarn guide passage cross-sectional area of 3.0 to 80.0 mm ² . According to the present invention, a yarn vibration preventing member is provided in the yarn guide hole path portion of the nozzle.

The yarn vibration preventing member used in the present invention refers to a member made of a rod-shaped material such as a needle or a plate-shaped material. What is essential is that the yarn can be prevented from vibrating to prevent unnecessary entanglement in the nozzle, and a loop formed by air injection can be stably formed.

As the material of the yarn vibration preventing member, various metals such as steel, brass and phosphor bronze, metal alloys or various ceramics, and fiber reinforced material and plastic reinforced material can be proposed, but they are not specified. The point is that the appropriate hardness to prevent the vibration of the yarn and prevent unnecessary entanglement in the nozzle,
As long as it has durability, the surface condition and electrical characteristics of the member are not specified.

Further, the diameter of the member is, for example, 0.1 to 8.0 in the case of a rod-shaped material.
The range of mm is preferably used. Furthermore, preferably 0.
2 to 4.0 mm, most preferably 0.4 to 1.9 mm.

If the diameter of the rod-shaped material is less than 0.1 mm, the vibration preventing effect becomes small, and it is impossible to prevent unnecessary internal entanglement, and it is impossible to cause a continuous loop in the yarn axis direction in the present invention.

Further, if the diameter of the rod-shaped material exceeds 8.0 mm, it is necessary to increase the diameter and width of the yarn guide hole path. As a result, the amount of air consumed is significantly increased, which is not preferable in terms of manufacturing cost.

To supplement the shape of the rod-shaped object, any cross-sectional shape such as a circle, an ellipse, a rectangle, a triangle or other polygonal cross-section can be adopted, and a projection or a cut on the side surface can be used.

Further, it may be a linear one or a part or a whole curved structure. In addition, it goes without saying that the tip of the rod-shaped object may or may not have a taper, and conversely, the tip may have a structure such as a spherical projection. .

In addition, a plurality of yarn vibration preventing members may be provided, or may be vibrated or may be heated or cooled in some cases.

Thus, the structure of the yarn vibration preventing member can be appropriately adopted, but from the viewpoint of ensuring the stable production of quality between the insides of the weights, a linear base is preferable. The above-mentioned yarn vibration preventing member may be installed along the yarn guiding hole axis.

Hereinafter, further details will be described with reference to the drawings.

FIG. 1 is an embodiment diagram for achieving the present invention, and shows an embodiment in which only basic devices are arranged. First, the multifilament yarn 1 is supplied by the first supply roller device 2. (If, for example, two multifilament yarns 1 are supplied, there is a second supply roller device 2 '.) Then, loop processing is performed by the air injection nozzle device 3,
The loop-shaped bulky processed yarn 9 obtained by the feeding device 4 and the winding device 5 is wound up.

FIG. 2 is a side sectional view showing the air injection nozzle device 3 of the present invention, in which A is an inlet for compressed air, B is a yarn guide hole passage, and N is a needle which is a yarn vibration preventing member.

The needle N has a function of preventing fiber entanglement of the loop-height bulky processed yarn occurring inside the yarn guide path, causing a continuous loop in the yarn axis direction, and imparting stable loop holding property.

FIG. 3 is a schematic view showing an appearance of an intermittent loop yarn which is apt to occur under processing in a high speed range according to a conventional method, and FIG. 4 is a schematic diagram showing an appearance of a looped bulky processed yarn of the present invention.

Here, if necessary, a device 6 for supplying water or oil to the multifilament yarn 1 may be provided in front of the air injection nozzle 3. Further, a mode in which the heating device 7 is provided for the purpose of fixing the loop may be used. In this case, the second feeding roller 8 may be provided in order to set the stretch magnification when the loop is fixed.

In the present invention, the feed rate was calculated as follows.

The surface speed of the first supply roller is V ₁ The surface speed of the first delivery roller is V _2, and the feed rate (%) between V _{1 and} V ₂ corresponding to the machining feed rate is While the feed rate is for the multifilament yarn 1 present, when processing by supplying two of Article thread, V of one of the yarn, if the second feed roller surface speed ... V ₁ ' The feed rate between _{1 and} V ₂ is as described above. The feed rate (%) between V ₁ ′ and V ₂ of other yarns is And

On the other hand, the feed rate (%) of the winding section is defined between V _{2 and} V _3. Hereinafter, further details will be described based on examples.

[Example] Example-1 Polyethylene terephthalate 75 denier 36 filament-T960 (triangular cross-section) yarn (manufactured by Toray Industries, Inc.) 1200 m /
Processed in minutes. Processing condition is feed rate between V _{1 and} V ₂ +25
%, And the feed rate between V _{2 and} V ₃ was −2.8%.

Hemaline T311 manufactured by Hebaline Co., Ltd. was used as a nozzle, and a needle made of steel and having a wire diameter of 0.76 mm was used as a yarn vibration preventing member, and was inserted into the yarn introducing hole.

The air pressure of the nozzle was 15 kgf / cm ² . A water applicator was installed between the supply roller and the nozzle to attach the water to the yarn. The bulky yarn obtained was as shown in FIG. 4 having continuous and uniform loops. In addition, as a result of tailoring the bulky yarn into a 32G jungle jersey fabric, it has excellent bulkiness,
It has a span-like touch and is rich in beauty.

Comparative Example-1 The filament raw yarn of Example-1 was used, and the processing was performed under the same conditions as in Example-1, except that the needle was not inserted into the nozzle guide hole. As a result, as shown in FIG. The bulky yarn has a shape in which a portion having a loop and a portion having no loop are mixed in the axial direction.

As a result of tailoring this bulky yarn into a 32G single jersey fabric, the bulkiness is insufficient as compared with the fabric of Example-1,
Moreover, the stitches did not pass and the surface quality was poor.

Example-2 Polyethylene terephthalate 50 denier 24 filament-T900 yarn (manufactured by Toray Industries, Inc.) was separately supplied to obtain 1300 m /
Processed at min. The processing conditions were a feed rate between V _{1 and} V ₂ + 4%, a feed rate between V ₁ ′ and V ₂ + 28.0%, and a feed rate between V _{2 and} V ₃ −2.0%. The pressure of the nozzle was 16 kgf / cm ² . As a thread vibration preventing member, a needle having a steel property and a wire diameter of 0.76 mm was used and inserted into the yarn guide hole. As a nozzle, Hemajet T311 manufactured by Hebaline Ltd. was used.

The bulky yarn thus obtained was as shown in Fig. 4, which was excellent in loop and entanglement. Plain weave (warp 110 threads / in, weft 97 threads / i
n) got. When the alkali weight loss rate of the woven fabric was set to 22%, the woven fabric was excellent in bulkiness and had a surface touch like a spun yarn,
It became a high-quality product as an outer cloth.

Example-3 A polyamide 70 denier 48 filament yarn (manufactured by Toray Industries, Inc.) was processed at 1450 m / min.

The processing conditions were a feed rate between V _{1 and} V ₂ + 24%, and a feed rate between V _{2 and} V ₃ −2.5%. As a yarn vibration preventing member, a needle having a steel property and a wire diameter of 0.84 mm was used and inserted into the yarn guide hole.
The nozzle used was T311 manufactured by Hebaline. The nozzle air pressure was 18.0 kgf / cm ² .

The obtained bulky yarn exhibits a continuous loop and a stable fourth
A loop form as shown is obtained. The thread is a vertical thread (98 threads)
/ in), weft (86 threads / in) polyethylene terephthalate (Toray Industries, Ltd.) type 301, 0.75 denier x 3
A plain weave was obtained using Nec 60 ^S (Nec: English cotton count) with 8 mm. The fabric is dyed with an acid dye.

Then, a brushing process was performed to obtain a furano-like material using high-quality cotton with excellent surface touch. In addition, the marbling tone also became more luxurious.

Example-4 Polyamide 70 denier 68 filament (round section) yarn (manufactured by Toray Industries, Inc.) was processed at 1420 m / min. The processing conditions were a feed rate between V _{1 and} V ₂ + 18%, and a feed rate between V _{2 and} V ₃ -2.6%. Nozzle is Hemajet T31 manufactured by Hebaline
1 was used. A plate-shaped yarn vibration preventing member having a rectangular cross section with a width of 2 mm and a depth of 1 mm was inserted and installed in the yarn introducing hole in the nozzle. The nozzle air pressure was 17.3 kgf / cm ² . A water application device was provided between the supply roller and the nozzle to apply water.

The obtained high-loft yarn was as shown in FIG. 4, which was continuous and uniform, had fine loops, and was excellent in entanglement.

Using the obtained bulky yarn, plain weave (warp 140 yarns / in, weft 135 yarns / i
n) was produced. The woven fabric is rich in span tone and has a high-class feel.

[Effects of the Invention] In the present invention, since the yarn vibration preventing member is provided inside the yarn guiding hole of the air injection nozzle, it is possible to reduce the intermittent loop as in the conventional case, and to form a stable continuous loop. Bulky yarn can be manufactured. This effect is particularly large in the high-speed machining area of 600 m / min or more, and the loop quality is stable.

[Brief description of drawings]

FIG. 1 is an embodiment diagram for carrying out the present invention, FIG. 2 is a side sectional view showing an example of an air injection nozzle device used in the present invention, and FIG. FIG. 4 is a schematic diagram showing the appearance of the intermittent loop yarn that is likely to occur, and FIG. 4 is a schematic diagram showing the appearance of the looped bulky yarn of the present invention. 1,1 '; multifilament yarn 2,2'; supply roller device 3; air jet nozzle device 4; first feeding device 5; winding device 9; bulky processed yarn A of the present invention; compressed air inlet B; guide Thread path N; Needle

Claims (1)

[Claims] 1. A thread vibration preventing member formed of a rod-shaped or plate-shaped material is provided in a yarn guide passage in the air injection nozzle device when fluid-processing a multifilament yarn using at least an air injection nozzle device. A method for producing a bulky textured yarn, characterized by being provided.