JP2003147648A - Colored yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a colored yarn having moderate crimps, substantially free from residual torque, and capable of giving stretch woven/knitted fabrics having soft touch feeling and moderate puffy feeling and scarcely developing any bias. SOLUTION: This colored yarn consists of a crimped yarn which comprises dyed polytrimethylene terephthalate fibers, has a 10% elastic recovery of >=60%, a crimp elongation of >=5% and a residual torque number of <=20 turns/m.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
Polytris with soft texture and virtually no torque
Regarding yarn-dyed yarn composed of methylene terephthalate fiber
Things. [0002] Polytrimethylene terephthalate fiber
Is the flexibility of nylon fiber and that of polyester fiber.
It has mechanical properties and stretchability (easy to stretch and stretched)
Fiber with excellent characteristics (easy recovery after recovery)
It is said to be dyed after it is woven and knitted
It is used in the clothing application field by law. Meanwhile, luxury
And from the aspect of fashion, such as a complex color scheme,
A so-called dyed woven or knitted fabric, which is woven or knitted after dyeing
Even better, polytrimethylene terephthalate fiber has
It has a good stretch property and a moderate swelling feeling.
There is a growing demand for help. Conventionally, in order to give a swelling feeling to a woven or knitted fabric
Can be used to twist the yarn crimped by false twisting into cheese or
A method of dyeing in a mussel form to obtain a pre-dyed yarn was generally used.
Japanese Patent Application Laid-Open No. 9-78373 discloses polytrimethylene
Open false twisted yarn of 1-heater false twisting method of phthalate fiber
It is shown. Since this false twist yarn has a low Young's modulus,
The twist yarn itself has a soft texture. Of the inventors
According to the knowledge, the polytrimethylene terephthalate fiber
1 Heater false twist yarn has a remarkably large residual torque,
The luck number is about the same as that of false twisted yarn of polyethylene terephthalate fiber.
1.5 times to 2 times, dye this yarn with cheese or scallop
Even if the yarn is dyed and dyed, the residual torque is not eliminated.
No. Therefore, skew occurs when this yarn is used for woven or knitted fabric.
In some cases, it was born. Japanese Patent Application Laid-Open No. 11-172536 discloses a
2 heaters using Ritrimethylene terephthalate fiber
False twisted yarns have been proposed. This false twist yarn has a soft feel
It is a false twist yarn that has both moderate and bulky properties.
Residual torque is significantly reduced compared to heater false twisted yarn
Despite the fact that there is virtually no residual torque,
No false twisted yarn with high properties has been obtained.
Even if the yarn is made from yarn, the residual torque is completely eliminated.
Skew may occur when used for woven or knitted fabric.
Was. SUMMARY OF THE INVENTION The object of the present invention is to
With very little crimp, practically no residual torque,
It has stretch and moderate swelling, with almost no skew.
Yarn-dyed yarn that can form woven or knitted fabric
To provide. Means for Solving the Problems [0006] The present inventors have set forth the above object.
As a result of intensive studies to solve the problem, the present invention is completed
Reached. That is, the present invention relates to a dyed polytrimer
Composed of Tylene terephthalate fiber, 10% elastic recovery
Rate is 60% or more, crimp elongation rate is 10% or more, and residual
It is made of crimped yarn with a torque of 20 times / m or less.
It is a yarn-dyed yarn to be marked. Hereinafter, the present invention will be described in detail. In the present invention
The polytrimethylene terephthalate fiber is
Methylene terephthalate unit as the main repeating unit
Polyester fiber
G units are at least 50 mol%, preferably at least 70 mol%,
More preferably 80 mol% or more, most preferably 90 mol%
% Of the polymer. Therefore,
In the polymer, as a third component, another acid component and / or
Means that the total amount of glycol components is 50 mol% or less.
30 mol% or less, more preferably 20 mol% or less,
Most preferably, the amount of poly contained in the range of 10 mol% or less.
Includes fibers consisting of trimethylene terephthalate. Characteristics of polytrimethylene terephthalate fiber
As for the strength, the strength is preferably 2 to 5 cN / dte.
x, more preferably 2.5 to 4.5 cN / dtex, most preferably
Is also preferably 3 to 4.5 cN / dtex, and the elongation
Is preferably 30 to 60%, more preferably 35 to 5%.
5%, most preferably 40-55%. The elastic modulus is
It is preferably 30 cN / dtex or less, more preferably 1 cN / dtex or less.
0-30 cN / dtex, most preferably 12-28 c
N / dtex, more preferably 15 to 25 cN / dte
x, and the elastic recovery at 20% elongation is preferably 6
0% or more, more preferably 70% or more, most preferably
It is 80% or more, more preferably 85% or more. [0009] Polytrimethylene terephthalate is
Phthalic acid or a functional derivative thereof and trimethylene glycol
Cole or a functional derivative thereof, in the presence of a catalyst,
Synthesized by binding under appropriate reaction conditions
You. In this synthesis process, one or more suitable
The third component may be added to form a copolymerized polyester.
And polyethylene terephthalate, polybutylene tereph
Other than polytrimethylene terephthalate such as tallate
Polyester or nylon and polytrimethylene teref
After synthesizing talate separately, blending or compounding
Spinning (sheath-core type, side-by-side type, etc.) may be used. Regarding composite spinning, Japanese Patent Publication No. 43-191
08, JP-A-11-189923, JP-A-11-189923
000-239927, JP-A-2000-2569
No. 18, the first component is a polytriol.
Methylene terephthalate, wherein the second component is the first component
Are different polytrimethylene terephthalates, polyethylene
Such as polyethylene terephthalate and polybutylene terephthalate
Polyester or nylon in parallel or eccentric
Composite spinning into placed side-by-side type or eccentric sheath-core type
There is something. In particular, polytrimethylene terephthalate
Of polytrimethylene terephthalate and copolymer
Seiya, two types of polytrimethylene tere with different intrinsic viscosities
A combination of phthalates is preferable.
No. 39927, the intrinsic viscosity is different.
Using two types of polytrimethylene terephthalate
The joint surface shape is curved so that the viscosity side wraps around the high viscosity side
Side-by-side composite spun fibers are
It is particularly preferable because it has both tretchability and bulkiness. As the third component to be added, aliphatic dical
Boric acid (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acid
Acid (cyclohexanedicarboxylic acid, etc.), aromatic dicarbo
Acid (isophthalic acid, sodium sulfoisophthalic acid
Etc.), aliphatic glycols (ethylene glycol, 1,2
-Propylene glycol, tetramethylene glycol
Alicyclic glycol (cyclohexanedimethanol)
), Aliphatic glycols containing aromatics (1,4-bis
(Β-hydroxyethoxy) benzene, etc.), polyether
Glycol (polyethylene glycol, polypropylene)
Glycol, etc.), aliphatic oxycarboxylic acids (ω-oxo
Cicaproic acid, etc.), aromatic oxycarboxylic acids (p-oxo
Benzoic acid). In addition, one or three or more
Compounds having an ester-forming functional group (such as benzoic acid
Is glycerin, etc.) within the range where the polymer is substantially linear.
Can be used with Further, matting agents such as titanium dioxide, phosphoric acid
Stabilizers such as hydroxybenzophenone derivatives
X-ray absorbers, crystallization nucleating agents such as talc, and smooth lubricants such as Aerosil
Agents, antioxidants such as hindered phenol derivatives, flame retardant
Agents, antistatic agents, pigments, optical brighteners, infrared absorbers, defoamers
Etc. may be contained. Polytrimethylene terephthalate
For example, Japanese Patent Application No. 2000-
No. 522304, etc.
After obtaining an undrawn yarn at a take-up speed of about
The method of twisting at about twice, the direct spinning directly connected to the spinning-drawing process
Method (spin draw method), winding speed 5000 m / min or more
High-speed spinning method (spin take-up method)
You may. [0013] The form of the fiber is preferably long fiber,
It may be uniform or thick and thin in the direction
Are round, triangular, L-type, T-type, Y-type, W-type, Yatsuha-type,
Polygonal type such as flat, dogbone type, multi-leaf type, hollow type
It may be a fixed one, and single yarn decitex is 0.1 ~ 7d
tex multifilament yarn (including extra fine yarn)
Mu), sweet twisted yarn, mixed fiber yarn, air jet processed yarn, false twist direction
False twisted yarn (POY drawing)
And false twisted yarns). The total fineness is 20 to 500 dtex deci.
Tex is preferred, more preferably 30 to 200 dt
ex. Usually, within a range not to impair the purpose of the present invention,
Natural fiber represented by wool in the range of 50% by mass or less
Etc., acetate fiber, polyethylene terephthalate fiber
Synthetic fibers represented by fibers, polyamide fibers and acrylic fibers
Wei, cupra rayon, viscose rayon, polinoji
Entangled blended regenerated cellulose fibers such as black rayon (high yield
Different shrinkage blended yarn with compressed yarn), twisted (sweet twisted yarn), 2 fees
It may be mixed by means such as air jet processing. The yarn-dyed yarn of the present invention has excellent stretchability.
60% elastic recovery at 10% elongation to obtain woven or knitted fabric
It is important that the above is not less than 70%
It is. The yarn-dyed yarn of the present invention has a crimp elongation of 10%.
It is important that the above is at least, preferably 20 to 300
%, More preferably 30 to 100%. Winding yarn
When the shrinkage / elongation ratio is in this range, stretchability and swelling are felt.
Is an excellent woven or knitted fabric. Further, the yarn-dyed yarn of the present invention has a residual torque number
It is important that it is not more than 20 times / m, preferably 1
It is 0 times / m or less, more preferably 5 times / m or less. This
, The skew of the woven or knitted fabric is almost eliminated
What does not occur can be obtained. Such characteristics
As a method for producing the yarn-dyed yarn of the present invention,
Low residual torque of trimethylene terephthalate fiber itself
It is important to use a good one. Such a thread
Raw yarn, knit de-nitted yarn, push-in yarn,
Fluid jet processing yarns and the like, among which, in the method described later
A manufactured knit denitted yarn is preferred. [0017] The most important factor for crimping polyester fibers, etc.
A typical yarn processing method is false twisting, but twisting heat set
-Due to untwisting, the false twist yarn generates torque in the twisted direction.
Live. Polytrimethylene terephthalate fiber is 2
Even if the tar false twist method is adopted, the residual torque number is 10 times.
/ M or less, heat set at extremely high temperature.
U. At this time, you have to heat set in tension
As a result, the crimp is almost lost, and the stretch ratio is less than 5%.
It is practically meaningless to perform false twisting. However, false twisted yarns having different false twist directions are aligned.
If you try to negate the torque of false twisted yarn
It is possible to obtain one with almost no residual torque.
The yarn-dyed yarn of the invention can be obtained. On the other hand, polytrimethi
Indentation processing which is a crimped yarn of lentephthalate fiber
Yarn, knit de-knit yarn, fluid jet processed yarn, etc. are false twisted
The crimp elongation is lower than that of yarn, and these yarns are generally used.
Crimping during dyeing when performing cheese dyeing or casset dyeing
When only yarn-dyed yarn with low crimp elongation is obtained
There is a case. The present invention relates to polytrimethylene terephthalate.
Fiber, especially low crimp elongation rate, indentation crimp
In the case of yarn, fluid jet processed yarn, etc., knit de-knit processing
In the present invention, by performing after dentin dyeing
It was found that the purpose of can be achieved. Hereinafter, the present invention will be described by knit denitting.
The method for producing the yarn-dyed yarn described above will be described. knit
As a knitting machine for creating a knitted fabric by the denit method,
Single knitting machines are preferred, and the gauge is preferably between 10 and
46 gauge, more preferably 18-38 gauge.
If it is less than 10 gauge, the crimp elongation of the present invention may be achieved.
Is difficult and thread breakage occurs when the gauge exceeds 40 gauge.
However, it is substantially difficult to create a knitted fabric. Knitting machine
The kettle diameter is preferably 2 to 8 inches in diameter, more preferably
3-5 inches. If the hook diameter is less than 2 inches, the required amount
It is uneconomical because it has a long time to knit
If you go over the thread, thread breakage will occur frequently during denit. There are no restrictions on the time of knitting,
Crimp elongation rate and unwinding with denit are possible within the range
Should be adjusted. Normally, the course of the knitted fabric /
The wale value should be within the range of 0.6 to 1.8.
Just do it. Course, wale of JIS-L-1018
This is a value measured according to the density measurement. Knitted fabric heat set
You can omit the procedure, but if you do this,
Heat and liquid set in hot water, liquid set in hot water, etc.
Adopt a method that combines these, and a method that combines them
It is sufficient if the shape of the knit loop can be fixed.
The processing temperature is 80 to 210 ° C for dry heat, and
60-150 ° C, 60-140 ° C for liquid set
And the processing time is appropriately set within a range of 5 seconds to 120 minutes.
You just have to choose. The knitted fabric produced in this manner is
And dyeing is preferred. The dyeing equipment is limited
Rather than the package dyeing used for normal dyeing
Color machine, liquid dyeing machine, beam dyeing machine, zicker dyeing machine,
Lamb dyeing machines can be used, but package dyeing
Donut type carrier or multi-stage carrier using color machine
Packing density 0.05-0.6 g / cm ^Three Packed with and dyed
The knitting fabric rubs against each other during dyeing
They do not break, making it easier to knit the fabric.
Further, it is preferable because the crimp uniformity is also excellent. In the case of package dyeing, shrinkage of the knitted fabric
If the size is too large, staining spots etc. may occur.
Dry heat, wet heat, liquid setting, etc. with minimal tension applied
It is preferable to sufficiently suppress the shrinkage of the knitted fabric. above
In dyeing, polyethylene fibers are commonly used.
Dyeing phthalate fiber with disperse dye or fluorescent dye
What is necessary is just to adopt the method of doing. The dyeing temperature is 90-130
C is preferable, and the time is preferably 15 to 120 minutes. Poly
Trimethylene terephthalate fiber has low glass transition point
Therefore, as in the case of 90-120 ° C, conventional polyethylene
Excellent even when dyed at lower temperatures than with phthalate fibers
It has the characteristic that high color developability is obtained. In the present invention, the unwinding property at the time of knitting of the knitted fabric is improved.
The condition of the knitted fabric to improve the weaving and knitting of the yarn
Then, apply a commercially available oiling oil etc.
Is also good. Cone winding after denitting dyed knitted fabric
What is necessary is just to carry out about a normal method. Winder
Can be a quick traverse type,
The winding hardness is good for unwinding when used for woven or knitted fabric.
40 to 60 degrees is preferred in terms of temperature. Unwinding property at the time of denit and weaving and knitting of yarn
In order to improve the properties, sweet twist of about 0 to 300 T / m
Knit de-knitting may be performed using the performed yarn. Number of twists
Exceeds 300 T / m, the residual torque number of the yarn-dyed yarn is 1
It may exceed 0 times / m. The twisting device is limited
Not thing, Italy twisting machine, ring twisting machine, double
A twister or the like can be used. Twist set
May be performed according to the usual method,
You may use it without doing. The yarn-dyed yarn of the present invention can be used for any knitted or woven fabric.
Can be used for things, stretch and swelling
And a woven or knitted fabric excellent in quality can be obtained. Also cone winding
Then, to some extent, the crimp is stretched and wound,
After knitting, shrink surfer, tumbler, ho
Relax the heat at 70-170 ° C with Fuman finish etc.
With this, the stretchability and the feeling of swelling are further improved. Of the present invention
Yarns are made of woven fabrics (taffeta, twill, satin and various
Change organization) and knitting (warp knitting, circular knitting, horizontal knitting, pantyhose knitting, etc.)
Can be used on other carpet surfaces
Part) can also be used. Especially with the yarn for weft knitting
When used, set the flat knitted fabric with Hoffman press finish
There is an advantage that it becomes easy to do. Knitting organization and
Then, India, India, Kanji, rubber, pearl, both sides, pom
Chiroma, Milano Rib and their changing organizations
It may be appropriately selected according to the purpose of the product. The yarn-dyed yarn of the present invention is used for wool, cotton, hemp, silk, etc.
Representative natural fiber, viscose rayon, cuprare
Regenerated cellulose fiber such as ー yong, acetate fiber, poly
Ethylene terephthalate fiber, polyamide fiber, acrylic
And synthetic fibers (including yarns and yarns)
Yarn composite (twisting, covering, false twisting, fluid jetting, spinning
(Twisting, etc.), and weaving and knitting. Hereinafter, the present invention will be described in more detail with reference to the following examples.
Although described, the present invention is not limited to only the examples.
Absent. The measurement method and evaluation method used in the present invention
The law is as follows. (1) Intrinsic viscosity Intrinsic viscosity [η] (dl / g) is based on the definition of the following equation.
This is the required value. [Η] = Lim (ηr-1) / C C → 0 In the formula, ηr is 0-chlorophenol having a purity of 98% or more.
Polytrimethylene terephthalate yarn dissolved in a solvent or
At 35 ° C of a diluted solution of polyethylene terephthalate yarn
Was divided by the viscosity of the solvent measured at the same temperature.
Value, which is defined as relative viscosity. C is
g / 100 ml of polymer concentration. (2) High elongation characteristics Using Tensilon manufactured by Toyo Baldwin Co., Ltd., sample length
Tensile strength under conditions of 20 cm and a tensile speed of 20 cm / min.
(CN / dtex), tensile elongation (%), tensile resistance (c
N / dtex). Also, from the stress-strain curve
Measure elongation (%) under 0.8826 cN / dtex load
Set. (3) 2.6 × 10 for crimp elongation fiber ^-Four With a cN / dtex load applied
Dry heat in a perfect oven manufactured by Tabai Co., Ltd.
After processing at 90 ° C for 15 minutes and leaving it overnight,
Measured according to IS-L-1090 elasticity test method (Method A)
Set. (4) The elastic recovery rate of the fibers was 0.0294 cN /
Apply the initial load of dtex, attach it to the tensile tester, and pull
Elongates to an elongation rate of 20% at a speed of 20 cm / min and releases for 1 minute
Place. After that, it is contracted again at the same speed,
Draw a curve. 0.0294 cN / dte during shrinkage
The elongation when x is reached is referred to as residual elongation (A). 20% increase
The long-term elastic recovery rate is determined according to the following equation. Elastic recovery at 20% elongation (%) = [(20−A) / 2
0] × 100 The elastic recovery at 10% elongation depends on the initial load and residual elongation.
The reading stress was 0.08826 cN / dtex,
Perform the same procedure as above with the long rate set to 10%,
Ask for it. Elastic recovery at 10% elongation (%) = [(10-A) / 1
0] × 100 (5) Number of Residual Torques
From the hook, hang it on the hook and stack two threads
8.8 × 10 below the place of 1m or more ^-2 cN / dtex
Apply initial load. Immediately 1m from the hook under the load
2.2 × 10 ^-2 Apply cN / dtex load directly
First remove the initial load. Residual torque when free bottom end
To rotate and twist with two yarns.
And leave. The number of twists at rest is measured with a twister, and
/ 2 times the residual torque number. Calculate the average of 5 times
And display in times / m. (6) Stretchability of flat knitted fabric Measurement method of elongation modulus of elasticity according to JIS-L-1018 (Method A: constant elongation)
Long method). Constant speed tensile test with self-recording device
Using a 10cm wide × 15cm long test piece,
After applying an initial load of 2.942 cN, grip width 2.5 c
m, stretched at a speed of 10 cm / min with a distance between grips of 10 cm
Elongate until the ratio reaches 100% and leave for 1 minute. That
After that, contract again at the same speed, draw a stress-strain curve,
Residual elongation when the stress becomes the same as the initial load during shrinkage
Is L (mm), and the recovery rate is calculated according to the following equation.
I will. Recovery rate (%) = [(100−L) / 100] × 100 From the recovery rate of the obtained flat knitted fabric, the stretchability was evaluated based on the following criteria.
Rank according to the standards. A: Recovery rate exceeds 90%. ：: Recovery rate of 85% or more and less than 90% △: Recovery rate of 80% or more and less than 85% X: Recovery rate of less than 70% To the touch by 10 inspectors
The following ranking is performed. <Flexibility> ○: Feels soft. Δ: Somewhat soft. ×: Feels hard. <Swelling feeling of flat knitted fabric> ：: There is swelling feeling. Δ: There is a slight swelling feeling. X: There is no swelling feeling. (8) Degree of skew of flat knitted fabric Course according to stitch bending according to JIS L-1018
Perform bend and wale bend measurements. The following criteria
The ranking is performed accordingly. Course and wale songs
Is less than 5%, it is judged that there is substantially no skew of the fabric.
It is a level that can be cut off. ：: Less than 5% for both course and wale bending. Δ: Both course and wale bending are 5% or more and less than 7%. ×: Both course and wale bends are 7% or more and 10% or less
Full. Example 1 Polytrimethylene having intrinsic viscosity [η] = 0.92
Spinning temperature of 265 ° C., spinning speed of 12
Spun at 00 m / min to obtain an undrawn yarn,
Cooling temperature 60 ° C, hot plate temperature 140 ° C, draw ratio
Rate 3 times, stretching at 800m / min stretching speed, 56dte
An x / 24f drawn yarn (original yarn) was produced. Stretching of drawn yarn
Degree, initial tensile resistance and elastic recovery at 20% elongation
Are 3.3 cN / dtex, 46%, 20 cN /
dtex and 85%. The obtained polytride of 56 dtex / 24f
Eikon methylene terephthalate multifilament yarn
Pipe knitting machine manufactured by Sangyo Co., Ltd. (model NCR-B, hook diameter 3.5
Inch), knitting machine gauge, knitted fabric after lowering
The knitted tubular fabric is 0.5 so that the course / wale ratio is as shown in Table 1.
Make Kg, 100 ℃ in autoclave under no tension
The wet heat setting was performed for 20 minutes. This knitted fabric is package dyed
Color machine (manufactured by Hisaka Seisakusho Co., Ltd.) with a packing density of 0.4 g / c
m ^Three And set the scouring agent (score roll
(Registered trademark) FC-250 (manufactured by Kao Corporation)) at 1 g / l.
Then, scouring was performed at 60 ° C. for 10 minutes. After scouring, dewatering and washing are performed, and the disperse dye (da
Dianix (registered trademark) Blue, manufactured by Istar Corporation
AC-E) 1% omf, dispersant (Meisei Chemical Co., Ltd.)
0.5 g / l of Disper (trademark) TL)
Stain at 120 ° C for 30 minutes in a bath adjusted to pH 5 with acetic acid.
went. After dyeing, drain and wash with sodium hydroxide 1
g / l, hydrosulfite 1g / l, sun molding
(Registered trademark) RC-700 (manufactured by Nichika Chemical Co., Ltd.) 1 g /
For 1 minute, reduction washing was performed at 80 ° C. for 20 minutes. Reduction cleaning
After that, dewatering and washing with neutralized water are performed, and a silicone softener (Lon
5% of size (registered trademark) K-22, one side company)
omf added and oiled at 50 ° C for 20 minutes
Was. After dehydration, the dried dyed tubular knitted fabric is
While winding the yarn into a cone with a winder
Obtained. Table 2 shows the physical properties of the obtained yarn. This yarn
Of three to the flat knitting machine (Coppo Co., Ltd., 12 gauge)
Eh, to create a flat knitted fabric of the Tianzhu organization, Hoffman press machine (God
At Kobe Press (trademark of Toko Denki Kogyo)
And finished to obtain a flat knitted fabric. The obtained flat knitted fabric
Table 2 shows the characteristics. The resulting yarn has low residual torque.
High crimp elongation rate and excellent recovery rate at 10% elongation
According to the evaluation of the fabric characteristics of the flat knitted fabric, the texture is soft.
It has a feeling of swelling, excellent stretchability, and no skew
It was excellent. Examples 2 to 4 In Example 1, the number of twists of the original yarn was
(Use Italy twisting machine), gauge, knitted fabric after knitting
Except that the base / wale ratio was changed as shown in Table 1.
A yarn-dyed yarn and a flat knitted fabric were obtained in the same manner as in Example 1. Earned destination
Table 2 shows the physical properties of the dyed yarn and the flat knitted fabric. Examples 2 to 4
Indicates that all of the yarns are low in residual torque and crimp elongation
High recovery rate at 10% elongation.
According to the fabric properties evaluation, there is a feeling of swelling and stretch
It was excellent in properties and without skew. Comparative Example 1 In Example 1, 56 dtex / 24f
Polytrimethylene terephthalate multifilament
56dtex / 24f polyethylene tele instead of yarn
Phthalate yarn (Asahi Kasei Kogyo Co., Ltd., strength 3.9cN)
/ Dtex, elongation 35%, initial tensile resistance 97cN / d
tex, elastic recovery rate at 20% elongation 25%)
Same as Example 1 except that the dyeing temperature was changed to 130 ° C
Then, a yarn-dyed yarn and a flat knitted fabric were obtained. The obtained yarn-dyed yarn and horizontal knitting
Table 2 shows the physical properties of the ground. The obtained dyed yarn is 10% elongation
The recovery rate is poor, so even if the fabric is flat, stretch
It was inferior in character and had a hard texture. COMPARATIVE EXAMPLE 2 A 56 dtex / 24 f polite of Example 1
Limethylene terephthalate multifilament yarn
Using a pin false twister IVF338 manufactured by Ishikawa Seisakusho
, Yarn speed 190m / min, number of false twists 3800T / m, false twist
Direction Z, false twist processing temperature 170 ° C, 1st feed 0.0
% And TU feed of 4.1%.
The obtained false twisted yarn is treated in the same manner as in Example 1 with a yarn-dyed yarn and a flat knitted fabric.
Got. Table 2 shows the physical properties of the obtained yarn-dyed yarn and flat knitted fabric.
You. The obtained dyed yarn has high residual torque and the texture of flat knitted fabric.
Is soft, swelling and stretch
However, skewing was large. COMPARATIVE EXAMPLE 3 A knitted fabric was wet-heat-set in the same manner as in Example 1.
The yarn obtained by denitting is used by Kozu Co., Ltd.
Using a soft winder (model SSP), paper tube diameter 72m
m dyeing tube, winding density 0.40g / cm ^Three At 1
kg roll, cheese dyeing machine (Hisaka Seisakusho Co., Ltd., small size
Set on a cheese dyeing machine and use scouring agent (score roll
(Registered trademark) FC-250 (manufactured by Kao Corporation)) at 1 g / l.
And a heating rate of 2 ° C / min.
Temperature to 60 ° C and scouring at 60 ° C for 10 minutes
Was. After scouring, dewatering and washing are carried out, and the disperse dye (D
ianix (registered trademark) Blue AC-E) 1% om
f, 0.5 g / l of a dispersant (Disper (trademark) TL)
In addition, after further adjusting the pH to 5 with acetic acid,
Staining was performed for 0 minutes. After dyeing, dehydrate and wash with water
Thorium 1 g / l, hydrosulfite 1 g / l, sa
Nmall (registered trademark) RC-700 (Nichika Chemical Co., Ltd.)
At 1 g / l, at a flow rate of 40 liters / minute, at a heating rate
Raise the temperature to 80 ° C at a rate of 2 ° C / min, and wash at 80 ° C for 20 minutes.
Purified. After the reduction washing, dewatering and neutralized water washing are performed,
Corn softener (Lonsize (registered trademark) K-22,
5% omf added at 50 ° C for 20 minutes.
The ringing process was performed. After dehydration, dry and dry the yarn.
Obtained. Table 2 shows the physical properties of the obtained yarn. Earned destination
The dyed yarn was obtained in the same manner as in Example 1 to obtain a flat knitted fabric. Obtained sideways
Table 2 shows the physical properties of the knitted fabric. The obtained dyed yarn has a crimp elongation rate
Low, the texture of the flat knitted fabric is soft, there is no skew,
The switchability was good, but the swelling was lacking. [Table 1] [Table 2] The yarn-dyed yarn of the present invention has a moderate crimp,
Virtually no residual torque, soft feel and stretch
Weaving with good swelling and moderate swelling
A knit can be formed.

Claims (1)

Claims: 1. A dyed polytrimethylene terephthalate fiber, having a 10% elastic recovery of 60% or more;
A yarn-dyed yarn comprising a crimped yarn having a crimp elongation of 10% or more and a residual torque number of 20 times / m or less.