JPH04333631A - Production of chenille yarn - Google Patents

Abstract

PURPOSE:To produce a soft chenille yarn resistant to falling-off of flower yarn and able to provide a thin gauge and to obtain a cloth having excellent stability of length and level dyeing property. CONSTITUTION:A chenille yarn is produced by using a stuff-crimped polyamide filament yarn having an uncrimping extension of 50-100% as a core yarn and/or a core-pressing yarn, placing a hot-melt fiber along the filament yarn and using a flower yarn in combination with the above product.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention has excellent flexibility and lightweight feel.
In particular, the present invention relates to a method for producing a molding yarn suitable for obtaining a fine-count molding yarn.

0002

BACKGROUND OF THE INVENTION Molle yarns consisting of a core yarn, a core holding yarn, and filaments require the use of spun yarns as the core yarn and core holding yarn in order to prevent the filaments from falling off. However, in order to obtain the strength required for mole yarn, spun yarn is
The yarn needs to have a certain thickness or more, and it has been difficult to obtain a fine yarn.

[0003] Therefore, as a method for obtaining a fine-count mole yarn, it has been proposed in Japanese Patent Application Laid-Open No. 174645/1983 to use a stretchable bulky yarn as the core yarn or core restraining yarn.

[0004] In this publication, in the examples, polyester false-twisted yarn is used as the core yarn and the core holding yarn together with heat-fusible fibers to form a molded raw yarn, which is then steam-set and heat-fused. The present invention discloses a method for causing fusion by the attached fibers, and claims that this makes it possible to increase the density of the filament fibers, improve the durability of the filaments against shedding, and make the yarn count finer. Further, steam setting for fusing heat-fusible fibers is usually carried out in a freely relaxed state.

[0005]

[Problems to be Solved by the Invention] However, although polyester fibers have many excellent properties, they lack softness and the polyamide-based fused fibers tend to fall off during dyeing. The above method attempted to produce mall yarn using shrunken yarn.
There are some unresolved issues and it has not been put into practical use. Therefore, in the present invention, an attempt was made to manufacture a mole yarn using a polyamide crimped yarn as a core yarn or a core yarn.

However, when polyamide crimped yarn is used, a false twisted yarn with the same degree of crimping as used in the above-mentioned known example is used as a core yarn or core holding yarn to form a molded raw yarn. With this manufacturing method, the texture of the resulting molle yarn becomes hard and the inherent soft characteristics of polyamide fibers cannot be exhibited, and the length stability is poor, making it difficult to use, making it difficult to use molle yarn products. There is a problem that it cannot be obtained stably, and it has been found that it is difficult to obtain a mole yarn that can withstand practical use.

In other words, if the length stability is poor, the dimensions of the fabric obtained through weaving, knitting, etc. processes become unstable, and it becomes impossible to continuously and stably manufacture a fabric of a constant size. Become. Furthermore, there was also the problem that staining spots were likely to occur during dyeing.

[0008] Accordingly, the present invention aims to maintain the original characteristics of polyamide fibers, such as softness and lightness, as well as durability, even when polyamide crimped yarn is used as the core yarn or core holding yarn. Furthermore, it is an object of the present invention to produce a mole yarn having excellent length stability.

That is, the present invention not only enables finer count and improved durability of filament shedding, but also exhibits the inherent characteristics of polyamide fibers, has excellent fixed length and level dyeing properties, and provides stable quality. The object of the present invention is to produce a molle yarn that can obtain a thin fabric using the molle yarn, which has a high degree of stability and dimensional stability.

0010

[Means for Solving the Problems] The method of the present invention uses a core yarn, a core holding yarn, a polyamide heat-fusible fiber along the core yarn, and a filament yarn to produce a mall yarn. In the method, a press-crimped polyamide filament yarn with a crimp elongation rate of 50 to 150% is used as a core yarn and/or a core restraining yarn to form a molded raw yarn, and then heat treated to The problem was solved by creating fusion using fusible fibers.

[0011] In the method of the present invention, the core yarn and/or core restraining yarn has a crimp elongation rate of 50 to 150%, more preferably 7.
It is most important to use push-crimped polyamide filament yarns that are between 0 and 120%. This pressed crimped polyamide filament yarn (hereinafter abbreviated as pressed crimped yarn) is obtained by stuffing ordinary nylon filament yarn such as nylon 6 or nylon 66 using a conventional method. “River Loft” (
(manufactured by Kawabo Rivers Co., Ltd.) and "Cintron" (manufactured by Daisei Gosen Co., Ltd.).

[0012] The pressed crimped yarn must be made of nylon filament and have a crimp elongation rate of 50 to 150%. The crimp elongation rate is JIS L10
This is a value measured according to the elasticity method A described in 90, and can be adjusted to a desired value by changing the processing conditions and yarn conditions in the stuffing process.

[0013] If the crimp elongation ratio is so large as to exceed 200%, the texture of the resulting molle yarn becomes hard and the length stability deteriorates, making it difficult to manufacture a practically satisfactory product. . Furthermore, it is difficult to control the tension when producing the mole yarn, making stable production difficult.

On the other hand, if the crimped elongation rate is as low as less than 50%, it is difficult to achieve the desired effect by using the crimped yarn, and the texture of the resulting knitted or woven product is poor. Therefore, it is not suitable for practical use.

The crimp elongation rate of the pressed crimped yarn in the present invention is as described above, preferably 70 to 120%, and 70% to 150%.
The use of a pressed crimped yarn with a crimping elongation of ~120% gives the finished textile product a favorable feel, facilitates manipulation during manufacturing, and makes it more stable.

[0016] Moreover, this pressed crimped yarn has a cutting elongation of 30 to
About 55%. Stress at 3% elongation is 0.10-0.25
g/d, stress at 15% elongation is 0.6 to 1.0 g
About /d. Further, it is preferable that the boiling water shrinkage rate is 1 to 6%, the elongation recovery rate is 5 to 40%, and the Young's modulus is 20 to 60 g/d.

The pressed crimped yarn may be used as at least one of the core yarn and the core restraining yarn, but it is more preferable to use both of them.

[0018] The thickness of the core thread and the core restraining thread is not particularly limited. Therefore, a thick yarn of about 150 to 280 deniers may be used, but a thin yarn such as 30 deniers, which is difficult to use with spun yarn, can also be used.

The polyamide heat-fusible fiber used along the pressed crimped yarn may be a low-melting polyamide fiber, such as "Elder" (manufactured by Toray Industries, Inc.).

[0020] There are no particular limitations on the material or form of the yarn for filaments. It may be natural fiber, synthetic fiber, or recycled fiber, and may be spun yarn or filament yarn. To manufacture molded yarn using these core yarns, core holding yarns, filaments, and heat-fused fibers, a predetermined length of filament yarn is sandwiched between the core yarn and the core holding yarn. It may be carried out by the usual method of tucking, cutting the filament yarn, twisting the core yarn and core holding yarn, and winding the yarn.

[0021] The heat treatment of the obtained mauling yarn is preferably carried out under conditions that limit yarn shrinkage in order to improve the fixed length of the resulting mauling yarn. This shrinkage restriction during heat treatment can be achieved by making the yarn into a skein and hanging it on a frame of a predetermined length if the heat treatment is a batch process. This can be done by adjusting the thread tension. The fusion-treated mole yarn can be made into a fabric product through processes such as knitting, weaving, and dyeing.

[0022]

[Function] In the present invention, a specific polyamide pressed crimped yarn with a crimp elongation rate of 50 to 150% is used as the core yarn and/or the core holding yarn, so that it can be used as a false twisted winding yarn with a high crimp elongation rate. The problems associated with using curly yarn are overcome, the texture and feel are soft, and the length stability is improved.

[0023] This is because when a false twisted crimped yarn with a high crimp elongation rate of 200 to 400% is used, the melted heat-sealable polymer is crimped by the false twisting during heat treatment of the maul yarn yarn. This is thought to be due to a phenomenon in which the crimp sticks in a bridging manner in the shrunken state, causing deterioration in the elastic properties of the molding yarn after heat treatment and hardening of the texture.

[0024] If the crimp cross-linking fixation occurs throughout the yarn, the resulting malleable yarn will have a hardened feel and a significant inhibition of elasticity, making it unusable for practical use, especially in terms of softness. . In addition, even if crimp bridging occurs in a part of the yarn, there will be a large difference in elasticity between the part where the crimp has occurred and the part where it has not occurred, resulting in extremely large variations in the elastic properties in the longitudinal direction of the yarn. This makes it difficult to handle during knitting, weaving, and dyeing, and it is no longer possible to obtain a product that can be used for practical purposes.

In contrast, in the present invention, the crimp elongation rate is 5.
Since the polyamide pressed crimped yarn having a moderate elasticity of 0 to 150% is used, the heat-sealable polymer is easily fixed along the bends of each single yarn. Therefore, bridging of the crimp due to the heat-sealing polymer is less likely to occur, and as a result, problems such as deterioration of elastic properties during heat treatment, hardening of the hand, and occurrence of variations in elastic properties can be solved. Furthermore, the length stability of the obtained product is improved, and the level dyeing property is also improved. Moreover, the crimping properties of the pressed crimped yarn used for the core yarn and core holding yarn remain intact even after forming the molle yarn, making it possible to obtain a molle yarn with appropriate elasticity. .

Furthermore, since the press-crimped yarn having a crimp elongation rate of 50 to 150% is used, the desired effect of using the crimped polyamide filament yarn can be exhibited. That is, the heat-fusible fibers are widely distributed on the surface of the core yarn and the core holding yarn, increasing the heat-fixing efficiency, resulting in a durable mole yarn that is excellent in preventing filaments from falling off. Furthermore, the density of filaments can be increased.

In addition, since it is a polyamide filament yarn, it is possible to obtain a malleable yarn with excellent flexibility, and therefore, when it is made into a fabric, it can be made into a flexible yarn, and furthermore, it does not cause deterioration in strength. This makes it possible to achieve a finer count. Furthermore, the feel can be much lighter compared to the case of mole yarn using spun yarn.

[0028] Since filament yarns with stretchable properties due to push-crimping are used for the core yarn and core holding yarn, there is no fuzzing from the core, and the filament is excellent in durability against filament shedding. Even if the length is as short as 5 to 2 mm, the filaments do not get covered up by the fluff of the core yarn and retain their molle state, so the molle yarn fully demonstrates the characteristics of the filament. can get.

[0029]

【Example】

[Example 1] Press-crimped yarn "Riverloft" 110 denier 30 filament (Co., Ltd.) obtained by press-crimping nylon 6-filament yarn as a core yarn and a core holding yarn.
(manufactured by Kawabo Rivers) was used. The crimp elongation rate of this pressed crimped yarn was 106%. Acrylic filament yarn of 150 denier and 125 filaments was used as the filament. In addition, “
Elder" (manufactured by Toray Industries, Inc.) 50 denier was used.

[0030] The heat-fusible fibers were aligned and supplied to the core yarn and the core restraining yarn, and a maul-shaped raw yarn with a filament cut length of 2.0 mm was produced by the usual method. The obtained malleable yarn was made into skeins, placed in a frame, and subjected to a moist heat treatment at 95 to 105°C for 20 minutes. The resulting mole yarn exhibited a crimp elongation of 8%.

[0031] When this mole yarn was dyed and plain knitted using a conventional method, a knitted fabric with small dimensional variations and excellent length stability was obtained, and furthermore, dyeing spots caused by yarn crimp spots were eliminated. There were no latitudinal irregularities caused by thread irregularities. Moreover, even though the mole yarn was as thin as No. 7, it had excellent durability against filament shedding, had a soft feel, and was lightweight, making it suitable as a material for clothing.

[Example 2] Nylon 6 pressed crimped yarn 210 denier 3 with a crimp elongation rate of 90% was used as the core yarn and core restraining yarn.
A mole yarn was produced in the same manner as in Example 1, except that 4 filaments were used and 60 count wool yarn was used as the filament. The resulting mole yarn exhibited a crimp elongation of 8%.

When this mole yarn was knitted into a fabric in the same manner as in Example 1, the fabric had excellent length stability and durability, and had the feel of wool yarn forming filaments, but was thin, soft, and lightweight. was gotten.

[Comparative Example 1] Same as Example 1 except that a 110 denier 30 filament of nylon 6 woolly yarn with a crimp elongation rate of 200% obtained by false twisting was used as the core yarn and core holding yarn. A mall-shaped yarn was produced. Next, the skeins were made into skeins, and the skeins were subjected to a moist heat treatment under the same conditions as in Example 1 in a relaxed state.

The crimpability of the obtained mole yarn was considerably lower than that of the woolly yarn itself used as the core yarn and the core restraining yarn, and the crimp unevenness was significantly large. This mole yarn was dyed in the same manner as in Example 1 and knitted into a fabric in the same manner as in Example 1, but the resulting knitted fabric had large dimensional variations and poor length stability. The texture was hard. Furthermore, the heat-fused fibers fell off during dyeing, and the durability of the filaments to fall off was insufficient.

[Comparative Example 2] Molle-shaped raw yarn was prepared in the same manner as in Comparative Example 1, except that nylon 6 pressed crimped yarn 110 denier 30 filament with a crimp elongation rate of 5% was used as the core yarn and core holding yarn. was produced and then subjected to moist heat treatment. Using this mall yarn, a knitted fabric was made in the same manner as in Example 1, but the resulting knitted fabric had a hard texture, almost no elongation, and
The durability against filament shedding was insufficient.

[0037]

[Effects of the Invention] According to the method of the present invention, although it is a mall yarn obtained by using stretchable bulky yarn as the core yarn or core holding yarn, it has excellent flexibility and lightweight feel, and has small elasticity unevenness and moderate elasticity. It is possible to obtain a malleable yarn having a certain property.

[0038] Therefore, it is possible to make the number finer. Furthermore, the durability of the filament to fall off can be improved. Thus, by using the mole yarn according to the method of the present invention, it is possible to obtain a fabric using mole yarn with excellent length stability and high level dyeing properties.
Stable quality and dimensions, lightweight and soft texture.
It becomes possible to obtain a fabric made of thin mole yarn.

[0039] Moreover, this mall yarn has a moderate elasticity, for example, an elongation rate of about 5 to 15%, so it has good processability during weaving and weaving. This has the great practical advantage of eliminating the possibility of the mole yarn flying out from the fabric, and an extremely excellent fabric using mole yarn can be obtained.

As described above, the mole yarn obtained by the method of the present invention can be widely used for all types of fabrics such as woven and knitted fabrics, but is particularly useful as a material for flat knitted fabrics for clothing. Furthermore, since it has moderate elasticity without unevenness, it can be used for jacquard knitting, which was difficult to apply with conventional mall yarns, and for clothing bottom products such as skirts. In this way, it becomes possible to further expand the range of use of the mole yarn.

[0041] The fabric using the mole yarn produced by the method of the present invention exhibits excellent processability and applicability, and can be widely used not only for clothing but also for furniture, wall coverings, car interiors, bags, etc. . that's all

Claims (2)

[Claims] [Claim 1] A method for producing a mole yarn using a core thread, a core restraining thread, and a heat-fusible fiber along the same, and a filament, which is wound as a core thread and/or a core restraining thread. A mall yarn characterized by forming a mall-like yarn using a press-crimped polyamide filament yarn having a shrinkage/elongation ratio of 50 to 150%, and then heat-treating it to cause fusion by heat-fusible fibers. manufacturing method. 2. The method for producing a molded yarn according to claim 1, wherein the heat treatment is carried out under conditions that limit shrinkage of the molded yarn.