JP3021678B2 - Manufacturing method of maul yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a flexible and lightweight
In particular, the present invention relates to a method of manufacturing a mall yarn, which is suitable for obtaining a fine yarn.

[0002]

2. Description of the Related Art For a yarn made of a core yarn, a core holding yarn and a flower yarn, it is necessary to use a spun yarn as the core yarn and the core holding yarn in order to prevent the yarn from falling off. However, in order to obtain the strength required for the molding yarn, the spun yarn needs to have a certain thickness or more, and it has been difficult to obtain a molding yarn having a fine count.

Japanese Patent Application Laid-Open No. Sho 58-174645 proposes a method for obtaining a fine yarn count yarn using a stretchy bulky yarn as a core yarn or a core holding yarn.

In this gazette, in the examples, a polyester false twisted yarn is used as a core yarn and a core holding yarn together with a heat-fusible fiber to form a raw yarn, and then steam-set to form a heat-fusible yarn. It discloses that a method for causing fusion by the attached fiber is disclosed, whereby the density of the fiber yarn is increased, the durability of the flower yarn falling off is improved, and the count of the molding yarn is reduced. Further, a steam set for fusing the heat-fused fibers is usually performed in a state of free relaxation.

[0005]

However, although polyester fibers have many excellent properties, they have problems in that they lack softness and that polyamide fused fibers are liable to fall off during dyeing. The above method, which attempted to produce a mall yarn using a crimped yarn,
It has unsolved parts and has not been put to practical use.
Therefore, in the present invention, an attempt was made to produce a molding yarn using a polyamide crimped yarn as a core yarn or a core pressing yarn.

However, when a polyamide crimped yarn is used, a false twisted yarn having the same degree of crimp as that used in the above-mentioned known example is used as a core yarn or a core-suppressing yarn. In the manufacturing method, the texture of the obtained mall yarn becomes hard, and the problem that the inherent soft properties of polyamide fiber cannot be exhibited, or the fixed length is poor, and the use difficulty occurs, and the molding yarn product is produced. There is a problem that it cannot be obtained stably, and it has been found that it is difficult to obtain a mall yarn that can withstand practical use.

That is, if the fixed length is poor, the dimensions of the fabric obtained through the steps of weaving, knitting and the like become unstable, and a fabric of a certain size cannot be manufactured continuously and stably. Become. Furthermore, when dyeing, there was also a problem that stain spots are easily generated.

Therefore, the present invention provides a polyamide fiber which is crimp-processed as a core yarn or a core-suppressing yarn, while maintaining the softness, lightness, etc., which are inherent characteristics of the polyamide fiber, and maintaining durability. Furthermore, it aims at producing the mall yarn which is excellent in fixed length.

That is, according to the present invention, it is possible to reduce the number of yarns and to improve the durability of detachment of the yarns, etc., exhibit the inherent properties of polyamide fibers, have excellent fixed length and level dyeing properties, and obtain stable quality. It is an object of the present invention to produce a molding yarn capable of obtaining a thin fabric using the molding yarn having high dimensional stability.

[0010]

According to the method of the present invention, a core yarn, a core holding yarn, and a polyamide yarn which is used in combination with the core heat-sealable fiber, and is used to manufacture a maul yarn using a yarn. In the method, as a core yarn and / or a core-suppressing yarn, a crimped polyamide filament yarn having a crimp elongation of 50 to 150% is used to form a mottled original yarn, and then heat-treated to form the heat-treated yarn. The problem was solved by causing fusion by the fusible fibers.

In the method of the present invention, the core yarn and / or the core holding yarn have a crimp elongation of 50 to 150%, more preferably 7 to 150%.
It is most important to use an indented crimped polyamide filament yarn, which is 0-120%. The indented crimped polyamide filament yarn (hereinafter, abbreviated as indented crimped yarn) is obtained by stuffing an ordinary nylon filament yarn such as nylon 6 or nylon 66 by an ordinary method. “River loft”
(Kawabo Rivers Co., Ltd.) and "Shintron" (Taisho Synthetic Co., Ltd.).

It is necessary that the indented crimped yarn is made of nylon filament and has a crimp elongation of 50 to 150%. The crimp elongation rate is JIS L109
It is a value measured according to the elasticity A method described in No. 0, and can be adjusted to a desired value by changing processing conditions or raw yarn conditions in stuffing.

If the crimp elongation is greater than 200%, the texture of the obtained mall yarn becomes hard and the fixed length deteriorates, so that it is difficult to produce a practically satisfactory product. . Furthermore, it is difficult to control the tension during the production of the molding yarn, and it is difficult to produce a stable yarn.

Conversely, when the crimp elongation is as small as less than 50%, the intended effect of using the crimped yarn cannot be sufficiently exerted, and the texture of the obtained woven product is low. And is unsuitable for practical use.

The crimp elongation of the indented crimped yarn in the present invention is required to be 50 to 150% as described above, but is more preferably 70 to 120%.
The use of the indented crimped yarn having a crimp elongation of 0 to 120% makes the texture of the finished knitted product favorable, facilitates the operation at the time of production, and makes it more stable.

The indented crimped yarn has a cutting elongation of 30 to 30.
About 55%. 0.10 to 0.25 stress at 3% elongation
g / d, stress at elongation of 15% is 0.6 to 1.0 g
/ D. Further, it is preferable that the boiling water shrinkage ratio is 1 to 6%, the elongation restoration ratio is 5 to 40%, and the Young's modulus is 20 to 60 g / d.

The indented crimped yarn may be used for at least one of a core yarn and a core holding yarn, but it is more preferable to use both of them.

The thickness of the core yarn and the core holding yarn is not particularly limited. Therefore, a thicker yarn of about 150 to 280 denier may be used, but a thinner yarn which is difficult to use with spun yarn, for example, a thinner yarn such as 30 denier can be used.

As the polyamide heat-fusible fiber used along the indented crimped yarn, a low-melting polyamide fiber may be used, for example, "Elder" (manufactured by Toray Industries, Inc.).

There is no particular limitation on the material and form of the thread for the flower thread. Natural fibers, synthetic fibers or regenerated fibers may be used, and spun yarns or filament yarns may be used. The production of a mulled yarn using the core yarn, the core holding yarn, the flower yarn, and the heat-sealing fiber is performed by sandwiching a predetermined length of the yarn for the yarn between the core yarn and the core holding yarn. What is necessary is just to cut | disconnect the thread | yarn for threading and a flower thread, and to twist a core thread and a core holding thread, and to carry out by the usual method of winding up.

The heat treatment of the obtained raw yarn is preferably performed in a state where yarn shrinkage is restricted, in order to improve the constant length of the obtained yarn. The restriction of shrinkage during the heat treatment is such that when the heat treatment is a batch treatment, the raw yarn may be formed into a skein shape, and this may be hung over a frame of a predetermined length. By adjusting the yarn tension of The fusion-bonded mall yarn can be made into a fabric product through processes such as knitting, weaving, and dyeing.

[0022]

According to the present invention, since a specific polyamide indented crimped yarn having a crimp elongation of 50 to 150% is used for the core yarn and / or the core holding yarn, a false twisted yarn having a high crimp elongation is provided. The problem in the case of using a compressed yarn is overcome, the feeling and feel are soft, and the fixed length is improved.

This is because when a false twisted crimped yarn having a high crimp elongation of 200 to 400% is used, the heat-fused polymer melted during the heat treatment of the raw yarn of the yarn is crimped by false twisting. It is considered that a phenomenon occurs in which the crimp is fixed so as to bridge the crimp in a contracted state, and the stretchability of the mall yarn after the heat treatment is deteriorated and the hand is hardened.

If the crimps are fixed to the entire yarn of the crimp, the resulting mall yarn has a markedly hardened feel and has a markedly impaired elasticity, which makes it impractical especially in terms of softness. . In addition, even if the crimp bridge fixation occurs in a part of the yarn, there is a large difference in the stretchability between the portion where the crimp is caused and the portion where the crimp does not occur, so that the variation in the stretchability in the longitudinal direction of the mall yarn is extremely large. In knitting and dyeing, handling becomes difficult, and it can no longer be expected to obtain a product that can withstand practical use.

On the other hand, in the present invention, the crimp elongation rate is 5
Since a polyamide indented crimped yarn having an appropriate elasticity of 0 to 150% is used, the heat-fusible polymer is easily fixed along the bend of each single yarn. Therefore, the crimp is hardly bridged by the heat-fusible polymer, and as a result, troubles such as deterioration of the expansion / contraction characteristics during heat treatment, hardening of the hand, and occurrence of variation in the expansion / contraction characteristics can be solved. Furthermore, the fixed length of the obtained product is improved, and the leveling property is also improved. Moreover, since the crimping characteristics of the indented crimped yarn used for the core yarn and the core holding yarn are exhibited in a state close to the original state even after the formation of the molding yarn, a molding yarn having a moderate elasticity can be obtained. .

Further, since the indented crimped yarn having a crimp elongation of 50 to 150% is used, the desired effect by using the crimped polyamide filament yarn can be exhibited. That is, the heat-fused fibers are widely distributed on the surface of the core yarn or the core-suppressing yarn, the heat-fixing efficiency is increased, and the durable yarn is excellent in preventing the yarn from falling off. Furthermore, the density of the yarn can be increased.

[0027] Further, since it is a polyamide filament yarn, a mall yarn having excellent flexibility can be obtained. Therefore, even in the case of fabric, a flexible yarn can be obtained, and further, the strength is deteriorated. Therefore, it is possible to reduce the count. Furthermore, the feel can be made very light as compared with the case of the spun yarn using the yarn.

Since the core yarn and the core-suppressing yarn are made of filament yarn having elasticity due to indentation crimping, there is no fluff from the core part, and the yarn has excellent durability against shedding. Even if it is as short as 0.5 to 2 mm, the yarn does not cover with the fluff of the core yarn and keeps the state of the molding. can get.

[0029]

【Example】

[Example 1] Pressed crimped yarn "River Loft" 110 denier 30 filaments obtained by press-crimping a nylon 6 filament yarn as a core yarn and a core-suppressing yarn.
Kawabo Rivers) was used. The crimp elongation of this indented crimped yarn was 106%. An acrylic filament yarn of 150 denier and 125 filaments was used as a flower yarn. In addition, 50 denier “Elder” (manufactured by Toray Industries, Inc.), which is a low-melting polyamide yarn, was used as the heat-sealing fiber.

The heat-fused fibers were supplied in a state of being aligned with the core yarn and the core-suppressing yarn, and a mottled original yarn having a cut yarn length of 2.0 mm was produced by an ordinary method. The obtained raw yarn was turned into a skein, placed in a frame, and subjected to a wet heat treatment at 95 to 105 ° C. for 20 minutes. The resulting mulled yarn exhibited a crimp elongation of 8%.

When this mall yarn is dyed and flat knitted by an ordinary method, a knitted fabric having small dimensional variation and excellent constant length can be obtained. There was no weft unevenness due to yarn unevenness. Moreover, the mulled yarn was excellent in durability against falling off of the yarn, showed a soft touch, was excellent in lightness, and was suitable as a material for clothing, regardless of its thinness, which was equivalent to No. 7.

[Example 2] Nylon 6 indented crimped yarn 210 denier 3 having a crimp elongation rate of 90% was used as the core yarn and the core holding yarn.
A mall yarn was produced in the same manner as in Example 1 except that 4 filaments were used and wool yarn of 60th count was used as the flower yarn. The resulting mulled yarn exhibited a crimp elongation of 8%.

The knitted fabric was formed into a knitted fabric in the same manner as in Example 1. As a result, the fabric was excellent in fixed length and durability, and was thin, soft, and light in weight while having the feel of a wool yarn forming a flower yarn. was gotten.

Comparative Example 1 The same procedure as in Example 1 was carried out except that a nylon 6 wooly yarn 110 denier 30 filament having a crimp elongation of 200% obtained by false twisting was used as a core yarn and a core holding yarn. A raw yarn was produced. Next, the skein was subjected to wet heat treatment under the same conditions as in Example 1 in a relaxed state.

The crimping properties of the obtained maul yarn were considerably smaller than those of the woolly yarn itself used for the core yarn and the core-suppressing yarn, and the crimp spots were extremely large. Using this mall yarn, the knitted fabric was dyed in the same manner as in Example 1 to form a knitted fabric in the same manner as in Example 1. However, the obtained knitted fabric had large dimensional variations and was inferior in fixed length. The feeling was hard. In addition, the heat-fused fibers fell off during dyeing, and the falling off durability of the yarn was insufficient.

[Comparative Example 2] The same procedure as in Comparative Example 1 except that a nylon 6 indented crimped yarn 110 denier 30 filament having a crimp elongation of 5% was used as the core yarn and the core-suppressing yarn. Was produced and then subjected to a wet heat treatment. Using this mall yarn, a knitted fabric was formed in the same manner as in Example 1, but the obtained knitted fabric had a hard feel, hardly stretched, and
The yarn shedding durability was insufficient.

[0037]

According to the method of the present invention, a mall yarn obtained by using a stretched and bulky processed yarn as a core yarn or a core-suppressing yarn, is flexible and excellent in lightness, and has a small amount of expansion and contraction and moderate expansion and contraction. It is possible to obtain a mall yarn having properties.

Therefore, finer count is possible. In addition, the dropout durability of the yarn can be improved. Thus, if the mall yarn according to the method of the present invention is used, it is possible to obtain a mall yarn using fabric having excellent constant length and high levelness,
With stable quality, dimensions, and soft feeling with a light feeling,
It is possible to obtain a thin-mole yarn fabric.

Moreover, since this mall yarn has a moderate elasticity, for example, an elongation ratio of about 5 to 15%,
The processability during knitting and weaving is good, and there is a practically great advantage that the jumping of the mall yarn from the fabric obtained by knitting and weaving is eliminated. Thus, a very excellent fabric using the mall yarn can be obtained.

As described above, the mall yarn obtained by the method of the present invention can be widely used for all fabrics such as woven and knitted fabrics, but is particularly useful as a material for flat knitted fabrics for clothing. In addition, since it has an appropriate stretchability without unevenness in stretch, it can be used for jacquard knitting and garment bottom products such as skirts, which were difficult to apply with conventional mall yarns. Thus, the range of use of the mall yarn can be further expanded.

The fabric using the mall yarn according to the method of the present invention exhibits excellent workability and applicability, which can be widely used not only for clothing, but also for furniture, wall covering, car interior, bag, etc. . that's all

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification code FI D04B 1/20 D04B 1/20 (72) Inventor Keiji Terazono 4-7-23 Meieki Station, Nakamura-ku, Nagoya City, Aichi Prefecture Toray Industries, Inc. Nagoya Branch (56) References JP-A-3-180530 (JP, A) JP-A-1-97229 (JP, A) JP-A-56-169831 (JP, A) JP-A-55-12823 (JP, A) A) JP-A-50-152053 (JP, A) JP-A-58-174645 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D02G 3/42 F-term theme code 4L036

Claims (2)

(57) [Claims] 1. A method for producing a molding yarn using a core yarn, a core holding yarn and a heat-fusible fiber along with the core yarn and a flower yarn as a core yarn and / or a core holding yarn. A molding yarn formed by using an indented and crimped polyamide filament yarn having a shrinkage and elongation ratio of 50 to 150%, and then heat-treated to cause fusion by the heat-fusible fiber. Manufacturing method. 2. The method according to claim 1, wherein the heat treatment is performed in a state in which shrinkage of the raw yarn is restricted.