JP3059655B2 - Polyester blend yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester mixed yarn comprising two or more filaments. More specifically, it relates to a polyester-based mixed yarn having a soft and bulging feeling.

[0002]

2. Description of the Related Art Conventionally, various attempts have been made to make synthetic fibers, particularly polyester filament yarns, close to the feeling of silk. For example, the cross-section of the raw yarn, the fineness of the constituent filaments of the raw yarn, the differential shrinkage and shrinkage are increased. With the advancement of yarn technology such as blending and the development of dyeing technology such as alkali weight reduction, the feeling level has reached a high level.

[0003] As such a prior art, a yarn obtained by blending a low-shrinkage polyethylene terephthalate filament and a high-shrinkage copolymerized polyester filament (Japanese Patent Publication No. 61-13909) is known. Yarn obtained by mixing filaments (Japanese Patent Publication No. 55-22586, Japanese Patent Publication No. 61-360)
No. 99 and Japanese Patent Publication No. 61-19730).

[0004]

However, the above-mentioned conventional Japanese Patent Publication No. Sho 61-13909 and Japanese Patent Publication No. Sho 55-22 are disclosed.
The mixed fiber yarn proposed in Japanese Patent No. 586 is a technique for producing swelling only by the difference between a high shrinkage yarn and a low shrinkage boiling water shrinkage ratio. There is a problem that the swelling structure developed in the scouring step is reduced in the next intermediate setting step, resulting in a cotton with poor swelling feeling. In addition, Japanese Patent Publication No. 61-36
No. 099 and Japanese Patent Publication No. 61-19730 discloses a mixed fiber which shrinks the fabric with high thermal stress to give a sense of swelling. However, there is a problem that the swelling structure developed in the relaxing scouring step of the dyeing process is reduced in the next intermediate setting step, resulting in a cotton with poor swelling feeling.

In order to solve the above-mentioned conventional problems, the present invention provides a polyester-based mixed fiber which is soft and silky and has a high swelling feeling, more preferably a woven or knitted fabric, and then a relaxing-intermediate setting treatment to provide a high swelling effect. It is an object of the present invention to provide a polyester-based mixed fiber capable of producing a yarn.

[0006]

In order to achieve the above object, the polyester-based mixed fiber of the present invention is a polyester-based mixed fiber consisting of at least two kinds of filament yarns, which is substantially free of loops and tarmi. , The mixed fiber is as follows
The filament yarns Fa and Fb of the component, and Fa: the sum of boiling water shrinkage and dry yield after boiling: WDa is 8
% Or less: The sum of the boiling water shrinkage and the dry yield after boiling: WDb is 1 % or less.
Polyester filament yarn satisfying 2 ≦ WDb ≦ 45 The constituent fibers of the mixed fiber have substantially uniform birefringence Δn in the length direction of the yarn, and the mixed fiber has been subjected to a boiling and dry heat treatment. Of boiling water shrinkage ratio and dry yield after boiling: WDt
(%) Is in the range of 17 ≤ WDt ≤ 45, and the number of loops of 1 mm or more after the above-mentioned boiling heat treatment is 30.
(However, the heat treatment for boiling and drying is performed by measuring the shrinkage rate of boiling water by the method A of JIS L1013 , and then the sample subjected to the boiling water shrinkage treatment is subjected to JIS L1013. Means a process for measuring the dry heat shrinkage by the method A (180 ° C. treatment. The dry heat shrinkage at this time is referred to as a dry yield after boiling).

[0007] In the above-mentioned structure, the expression "substantially free of loop and tarmi" means that the loop and tarmi are intentionally arranged on the surface of the mixed fiber to obtain an effect thereby. It does not include the form of the yarn to which Taslan has been applied, but it means that it includes a loop and a thickening that may occur in the length direction of the yarn that may occur accidentally in the production process of the mixed fiber yarn.

In the above structure, it is preferable that the dry yield after the boiling of the filament yarn Fb: ADb is 5% or more and the dry yield after the boiling of the filament yarn Fa: ADa. More preferably, ADb ≧ 8% and ADa ≦ 3
%.

In the above construction, it is preferable that the filament yarn Fb is a high shrink yarn of a copolyester containing polyethylene terephthalate as a main component and copolymerized with a third component.

In the above structure, it is preferable that the weight ratio of the filament yarn Fa to the whole mixed yarn is 30 to 70%. Further, in the above configuration, it is preferable that the single yarn fineness of the filament yarn Fa is in the range of 0.01 to 1 denier.

In the above structure, it is preferable that the single-filament fineness of the filament and Fb is in the range of 2 to 7 denier. Further, in the above configuration, the number of entangled yarns is 3
The number is preferably 0 to 150 / m.

[0012]

According to the constitution of the polyester-based mixed yarn of the present invention described above, the polyester-based mixed-filament yarn comprising at least two kinds of filament yarns and having substantially no loop and thinning is provided. The fiber is substantially uniform in birefringence Δn in the length direction of the yarn, and the mixed fiber is the sum of the boiling water shrinkage and the dry yield after boiling when subjected to the boiling dry heat treatment: W
Dt (%) is in the range of 17 ≤ WDt ≤ 45, and the number of loops of 1 mm or more after the above-mentioned boiling and drying heat treatment expresses 30 or more / m, so that soft and silky high swelling feeling is obtained. Can be realized. Furthermore, a polyester-based mixed-yarn that can exhibit a high swelling effect can be realized by performing a relaxing to intermediate setting process from a woven or knitted fabric.

More specifically, it is composed of at least two kinds of filament yarns having different shrinkages. With the aim of exhibiting a higher swelling structure in a relaxing scouring (wet heat: 100 to 110 ° C.)-Intermediate setting step (dry heat: 160 to 190 ° C.) performed when dyeing and finishing a woven or knitted fabric using this kind of yarn. In order to achieve the intended effect, it is necessary that WDt is 17% or more and WDa is 8% or less. Even if the blended yarn has a boiling point of at least 12% or a boiling point of the low shrinkage component of at most 8% as in the past, after relaxing scouring when dyeing and finishing a woven or knitted fabric using the same. In the state where the low shrinkage component shrinks further by the dry heat of the intermediate set and the entire mixed yarn does not shrink, the high swelling feeling aimed at by the present invention cannot be obtained. Also, when WDt is less than 17 % and WDa is more than 8%, a high swelling with a small difference in shrinkage cannot be obtained.
However, WDt does not need to be increased without limit and is 45%
The range up to is preferred. If it exceeds 45%, the finished woven or knitted fabric will become hard with a core, and it will not be drapeable even when worn as a product. It is not preferable because elongation occurs.

In the present invention, since the mixed yarn is substantially free of loops and thinning, it can be handled as easily as a normal raw yarn (raw yarn). It has the property that the loop expresses 30 or more / m. This characteristic is an important characteristic in producing a void structure between Fa and Fb in the relaxing scouring during dyeing finish-intermediate setting step in a woven or knitted fabric using the same, and as a result, increasing the thickness of the woven or knitted fabric and giving a swelling feeling. It is. If the loop length is less than 1 mm or less than 30 / mm, the void structure between Fa and Fb is insufficient.

[0015] In the above, the combined filament yarn since it contains a filament yarn Fa and Fb of the following ingredients, good bulge feeling is obtained. (1) Fa: Sum of boiling water shrinkage and dry yield after boiling: WDa
Is 8% or less. (2) Fb: Sum of boiling water shrinkage and dry yield after boiling: WDb
Is polyester filament yarn in which 12 ≦ WDb ≦ 45.

In the above, the dry yield after boiling of the filament yarn Fb is 5% or more when ADb is 5% or more.
Drying yield after boiling: If it is larger than ADa, the bulge structure developed by the moist heat of relaxed scouring in the dyeing finishing process is not crushed by the dry heat of the next intermediate set, and further the bulge structure is enhanced in the process. preferable. If the dry yield after the boiling of the filament system Fa is larger than that of the mixed fiber, the filament Fa shrinks more than the mixed fiber in the intermediate setting step, which is not preferable because the swelling structure is reduced. For the above reasons, it is more preferable that ADb ≧ 8% and ADa ≦ 3%.

In the above construction, the filament yarn F
When b is a high-shrink yarn of a copolymerized polyester having polyethylene terephthalate as a main component and a third component copolymerized, preferable shrinkability can be exhibited. As the copolymerization component, an acid component such as an isophthalic acid component, a 1,2-bis (4-carbophenoxy) ethane component, a 2,6-naphthalenedicarboxylic acid component, an adipic acid component, a sebacic acid component, propylene glycol, 4-butanediol, 2,2
Known compounds such as -bis (4-β-hydroxyethoxyphenyl) propane and polyethylene glycol can be used, but the isophthalic acid component is preferably 3 to 15 mol%.

Further, in the above construction, the filament yarn F
When the weight ratio of a to the entire mixed fiber is 30 to 70%, a more preferable bulging structure can be exhibited. Further, in the above-described configuration, the single-filament fineness of the filament yarn Fa is 0.1.
It is practically preferable that it is in the range of 01 to 1 denier.

In the above structure, the filament and the F
It is practically preferable that the single yarn fineness of b is in the range of 2 to 7 denier. Further, in the above-described configuration, when the number of entanglements of the mixed yarn is 30 to 150 / m, the higher processing passability such as the weaving property and the knitting property is improved.

[0020]

The present invention will be described more specifically with reference to the following examples. In the present invention, in order to obtain a silky woven or knitted fabric having a soft and high swelling effect of natural silk, a higher swelling structure in the process of relaxing scouring-intermediate set-alkali weight reduction, which is a dyeing process, up to the middle set. It is necessary to elute a part of it in the subsequent alkali weight reduction process to form a void structure and to lower the Young's modulus, and to expand the bulge structure developed in the relax scouring process in the next intermediate setting process The present inventors have found that it is the most important point in obtaining a soft and high bulging silky knitted fabric that the swelling structure is not crushed and that the bulging structure is enhanced in this step, and reached the present invention.

In the embodiments described below,
The number of loops of 1 mm or more after the boiling heat treatment is defined as a photoelectric fluff measuring device (TORAY FRAY) for measuring the number of loops of a running yarn on a sample processed by the same method as the dry yield measurement after the boiling.
COUNTER) at a yarn speed of 50 m / min and a running tension of 0.1 g / d.
The above-mentioned number of protruding loops / m is referred to.

FIG. 1 is a schematic view schematically showing the appearance of a polyester-based mixed fiber according to one embodiment of the present invention. It is a polyester-based mixed yarn. The fibers constituting the mixed yarn have substantially a uniform birefringence Δn in the length direction of the yarn.

Next, FIG. 2 is a schematic view schematically showing the appearance of the polyester mixed fiber yarn of one embodiment of the present invention after it has been subjected to the boiling and dry heat treatment. Sum of boiling water shrinkage and dry yield after boiling: WDt (%) is 17 ≦ WD
This shows a state in which t ≦ 45 and the number of loops of 1 mm or more after the above-mentioned boiling and drying heat treatment expresses 30 or more loops / m. FIG. 2 shows a state in which entangling remains in the mixed fiber after the boiling and drying heat treatment.

Next, FIGS. 3 and 4 illustrate an apparatus for producing a polyester-based mixed fiber of one embodiment of the present invention. First, the filament drawn yarn that becomes Fa in FIG. 3 is unwound from the package 1, and the roller 3, the guide
4 and a roller 5 having a heater 6 in the middle.
7 and supplied to a fluid entangled (interlaced) nozzle 9 . The filament drawn yarn Fa is thermally stabilized by the heat treatment, and becomes a low shrinkage yarn.
On the other hand, the filament drawn yarn to be Fb is unwound from the package 2 and supplied from the roller 7 to the fluid entanglement nozzle 9 . Here, after Fa and Fb are mixed, they pass through the roller 10 and are taken up by the take-up roller 11 and the take-up package 12 . Since the drawn filament yarn Fb is a copolymer yarn and has not been heat-treated, it becomes a highly shrinkable yarn.

FIG. 4 is a schematic view of an apparatus for producing a mixed fiber according to the present invention, which is different from FIG. FIG.
As described above, it is also possible to change the weight ratio of Fa by changing the yarn supply speeds of Fa and Fb supplied to the fluid entanglement nozzle 9 between the rollers 7 and 8.

Hereinafter, specific embodiments will be described. (Example 1) Test no. 1 (Example) to Test No. 1 2
(Comparative Example) was tested using the apparatus shown in FIG. Table 1 shows the yarns, characteristics and processing conditions used in this test.
Is shown at the top. In Table 1, copolymerized PET refers to poly (ethylene tere-isophthalate) obtained by copolymerizing 9 mol% of an isophthalic acid component. The characteristics of the obtained Fa and the mixed yarn are shown in the middle of Table 1.

Using the blended yarns obtained in the above Example (Test No. 1) and Comparative Example (Test No. 2), the warp is not twisted, and the weft is 1400 T / m (T
Is the number of twists, m is a meter), and the yarn is turned into a thread.

Next, it was woven into a plain weave. The weaving conditions were a warp density of 128 yarns / inch and a weft yarn density of 82 yarns / inch, and the weaving structure was palace. The obtained greige was subjected to normal relaxing scouring (moist heat 110 ° C, 20 minutes), and an intermediate set (dry heat 1).
80 ° C., 30 seconds), alkali reduction treatment (NaOH aqueous solution: concentration 20 g / l, 98 ° C., 30 minutes, weight loss rate:
15%), and the dyeing process was performed in the process of liquid jet dyeing (130 ° C., 45 minutes). Table 1 shows the evaluation results of the texture, feeling, and permeability of the obtained woven fabric in the weaving process (including the preparation process).
Is shown at the bottom.

The characteristics of the Fb of the mixed fiber in Table 1 are the same as the characteristics of the Fb of the raw yarn used.

[0030]

[Table 1]

From the above, it was confirmed that the mixed fiber of Examples of the present invention had a swelling feeling, was soft, had a firm feeling, and exhibited a silky effect. Further, it was confirmed that a high swelling effect was exhibited by performing the relaxing-intermediate setting treatment after forming the woven or knitted fabric.

[0032]

As described above, the polyester-based mixed yarn of the present invention is a polyester-based mixed yarn consisting of at least two types of filament yarns, which is substantially free of loops and threads. Filament yarn F of the following components
a : Fb : Sum of boiling water shrinkage and dry yield after boiling: WDa is 8
% Or less: The sum of the boiling water shrinkage and the dry yield after boiling: WDb is 1 % or less.
Polyester filament yarn satisfying 2 ≦ WDb ≦ 45 The constituent fibers of the mixed fiber have substantially uniform birefringence Δn in the length direction of the yarn, and the mixed fiber has been subjected to a boiling and dry heat treatment. Of boiling water shrinkage ratio and dry yield after boiling: WDt
(%) Is in the range of 17 ≤ WDt ≤ 45, and the number of loops of 1 mm or more after the above-mentioned boiling heat treatment is 30.
By expressing at least 10 m / m, it is possible to realize a polyester-based mixed fiber that is soft and has a silky high swelling feeling. Furthermore, a polyester-based mixed-yarn that can exhibit a high swelling effect can be realized by performing a relaxing to intermediate setting process from a woven or knitted fabric.

[Brief description of the drawings]

FIG. 1 is a schematic view schematically showing the appearance of a polyester-based mixed yarn of one embodiment of the present invention.

FIG. 2 is a schematic view schematically showing the appearance of a polyester mixed fiber yarn according to one embodiment of the present invention after being subjected to a boiling and dry heat treatment.

FIG. 3 illustrates an apparatus for producing a polyester-based mixed fiber according to one embodiment of the present invention.

FIG. 4 illustrates an apparatus for producing a polyester-based mixed fiber yarn according to one embodiment of the present invention.

[Explanation of symbols]

1,2 filament yarn packages 3, 5, 7, 8, 10 the roller 4 Guide 6 heater 9 fluid entangling (interlaced) nozzle 11 winding roller 12 winding package

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kiyoshi Nakagawa 1-1, Kamiyake, Kamimiyake, Heiwa-cho, Nakajima-gun, Aichi Prefecture Toray Textile Co., Ltd. Headquarters Tokai Works (56) References Tokiko Sho 61-13009 ( JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) D02G 3/04 D01F 6/62 D02G 1/18 D02G 3/34

Claims (7)

(57) [Claims] 1. A polyester-based mixed yarn comprising substantially at least two kinds of filament yarns, which is substantially free of loops and / or threads, wherein the mixed yarn is a filament yarn F having the following components:
a : Fb : Sum of boiling water shrinkage and dry yield after boiling: WDa is 8
% Or less: The sum of the boiling water shrinkage and the dry yield after boiling: WDb is 1 % or less.
Polyester filament yarn satisfying 2 ≦ WDb ≦ 45 The constituent fibers of the mixed fiber have substantially uniform birefringence Δn in the length direction of the yarn, and the mixed fiber has been subjected to a boiling and dry heat treatment. Of boiling water shrinkage ratio and dry yield after boiling: WDt
(%) Is in the range of 17 ≤ WDt ≤ 45, and the number of loops of 1 mm or more after the above-mentioned boiling heat treatment is 30.
A polyester-based mixed-yarn which is expressed in at least 10 m / m. (However, the boiling and drying heat treatment is based on JIS L1013
For measuring the shrinkage rate of boiling water according to Method A , and then subjecting the sample subjected to the shrinkage treatment to boiling water to JIS L1
This refers to performing a process for measuring the dry heat shrinkage by the A method of 013 (processing at 180 ° C). The dry heat shrinkage at this time is called the dry yield after boiling. ) 2. A dry yield after boiling of the filament yarn Fb: AD
b is 5% or more and the dry yield after boiling of the filament yarn Fa:
The polyester-based mixed yarn according to claim 1, which is larger than ADa. 3. The polyester-based mixed fiber yarn according to claim 1 , wherein the filament yarn Fb is a high shrinkage yarn of a copolymerized polyester having polyethylene terephthalate as a main component and a third component copolymerized. 4. The polyester-based mixed yarn according to claim 1 , wherein the weight ratio of the filament yarn Fa to the whole mixed yarn is 30 to 70%. 5. The filament yarn Fa having a single yarn fineness of 0.0
The polyester blended yarn according to claim 1 , wherein the yarn is in the range of 1 to 1 denier. 6. The filament and Fb have a single yarn fineness of 2 to 7.
The polyester-based mixed yarn according to claim 1 , which is in a denier range. 7. The number of entanglements of the mixed yarn is 30 to 150 / m
The polyester blended yarn according to claim 1, which is: