JPH04185749A - Dyed product of elastic commodity and its production - Google Patents

Abstract

PURPOSE:To obtain the title product suitable for swimming suits, etc., having excellent fastness to dyeing and fastening force by sufficiently relaxing high- strength cloth comprising elastic yarn having specific physical properties and thermoplastic yarn, subjecting the yarn to dry heat setting, subjecting to sewing room operation and drying. CONSTITUTION:Cloth which comprises elastic yarn having >= g/dr strength and satisfying formula I (R is hot water-resistance strength retention ratio ; T is heat-treating preferably at <140 deg.C) and formula II (HD100 is cut dry temperature at 100% elongation) and thermoplastic yarn, and satisfies formula III (S is setting index in setting at 30% elongation at 180 deg.CX1 minute) is sufficiently relaxed, subjected to dry heat setting at a temperature satisfying formula IV (Tb is dyeing temperature ; Tp is dry heat setting temperature) without elongating >=30% and to sewing room operation, and then dyed to give the objective dyed product of elastic commodity.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a stretch dyed product and a method for producing the same.

(Conventional technology) Product dyeing, in which garments are dyed after sewing, has attracted particular attention in recent years as a production system suitable for high-mix, small-lot, and short-cycle manufacturing methods that reduce defective inventory and meet diversifying consumer needs. .

The materials currently used for product dyeing include not only materials that can be dyed at low temperatures, such as 100% cotton and wool, but also materials that require high temperature dyeing, such as 100% polyester.

(Problems to be Solved by the Invention) When dyeing these products, the most important point is wrinkles, streaks caused by wrinkles, or dimensional stability.

In this respect, low-temperature dyeing is more advantageous than high-temperature dyeing, and thermoplastic fibers with setting properties are more advantageous than natural fibers.

On the other hand, the use of stretchable products such as swimsuits continues to grow with the expansion of leisure facilities and the expansion of leisure time. However, the current situation is that these products are not produced by product dyeing. This is because stretchable fabrics undergo a large amount of movement during dyeing, that is, they lack radiance and are prone to wrinkles and streaks, and also lack dimensional stability.

As a result of intensive studies in view of the above-mentioned current situation, the present inventors discovered a method for ensuring dimensional stability during product dyeing, and made it possible to dye stretchable products for the first time.

(Means for distantly resolving the problem) In other words, the present invention has a strength of 0. ．． It is a stretch dyed product made of elastic yarn of 7g/dr or more and thermoplastic fiber. This stretch dyed product has a strength of 1 g/dr or more and is made of elastic yarn and thermoplastic fibers that satisfy the following formulas (1) and (II). A method for producing stretch dyed products, which is characterized by dry heat setting and sewing at a temperature that satisfies the following formula (■) without elongating by more than 30%, and then dyeing. Tegol 2R≧7800/T (
R Water resistance strong change retention T Hot water treatment (warm <140°C)
・・・・・・(1) HD+oot≧155℃ (HD 1
oa: 11 Cutting dry heat temperature at 10% elongation)
...(II) s≧0.7 (S
: Set index when elongated by 30% and set at 180℃ for 1 minute)
...(III) TD book (35/S)≦T,
≦T o = (100/S)...(IV) TD: Dyeing 1 degree T, 2nd dry heat separator temperature First, the stretchable fabric used for product dyeing of the present invention is an elastic thread that is a stretchable thread. The main material is thermoplastic fiber.

Thermoplastic fibers include polyethylene terephthalate,
Ifhl'F9*% fibers made of polyester such as polybutylene terephthalate, polyamide such as 6-nylon, 6-row nylon, aromatic polyamide, polyolefin such as polypropylene, ethylene-vinyl acetate copolymer or saponified product thereof, etc.

Thermoplastic fibers are used because they have excellent setting properties. This is important for ensuring setting properties, and i-long fibers are preferable to short fibers in terms of setting properties.

In particular, in the present invention, it is assumed that the material will be dyed, and multifilaments of nylon and polyester are particularly suitable from the viewpoint of strength, color development, etc. The reason for using mulch is to avoid a rough and hard texture. The single yarn denier may be selected as appropriate depending on the application. There are no particular regulations regarding the polymer composition of these nylons and polyesters.
For example, polyester is made of polyethylene terephthalate and is obtained by a known polymerization method, and may contain commonly used matting agents, antistatic agents, etc. as additives. Copolymers with components may also be used.

Next, the elastic thread used in the present invention is made of an elastomer. Most of the elastic yarns currently used are polyurethane-based, and polyurethane elastic yarns are divided into ether-based yarns produced by dry spinning and ester-based yarns produced by melt-spinning.

Ether-based polyurethane elastic threads have poor setting properties, and ester-based polyurethane elastic threads have poor heat resistance, particularly hot water resistance. In order to achieve the object of the present invention, it is necessary that the elastic threads have excellent setting properties, but this alone is not sufficient. In order to have excellent setting properties as a stretchable fabric, it is important to set the main material, nylon or polyester multifilament, at a high temperature above a certain level. Therefore, the elastic yarn must also have the heat resistance to withstand this high temperature setting. is necessary. Furthermore, when the main material is polyester, the dyeing process is carried out after sewing, and the dyeing temperature can reach over 120°C, so it goes without saying that it must be resistant to hot water to withstand this temperature.

None of the polyurethane elastic yarns to date have sufficient setting properties in the high-temperature setting range, as well as heat resistance and hot water resistance. Ether-based polyurethane elastic threads have insufficient setting properties, and ester-based polyurethane elastic threads have poor heat resistance and hot water resistance.

As mentioned above, the elastic yarn and fabric used in the present invention are R≧7800/T (R: itM water strength retention rate (610) T IA water treatment temperature <140°C)...
・(1) HD+oom, 5155℃ (HD 1oa,
: Cutting soft viscosity temperature at 100% elongation)
...(n) S≧0.7 (S: Set index when elongated by 30% and set at 180℃ x I minute) ...
The properties of (II[), that is, excellent properties in heat resistance and hot water resistance, can be obtained specifically as shown in Fig.

The polyurethane constituting the elastic thread is obtained by polymerizing a polymer diol, an organic diisonanate, and a chain extender. The polymer diol used in the present invention has a molecular weight of 1000 to 350.
0 ■General formula (in the formula, R1 is an alkylene group having one methyl branch and having 6 to 10 carbon atoms, R' is an organic group) or ■General formula % It is a polycarbonate diol which essentially has a structural unit represented by the formula % (in the formula, R1 is an alkylene group having 6 to 10 carbon atoms and one methyl branch), and the following (X), (y ) must satisfy the following conditions.

5≦Total carbon number/(Number of ester bonds or carbonate bonds)≦11 ・・・・・・(X)0.01
5≦Number of methine groups/Total number of carbon atoms≦013 (Y) (Here, the total number of carbon atoms is the total number of carbons remaining after excluding carbons contained in ester bonds and carbonate bonds in the polymer diol) The molecular weight of the polymer diol used in the present invention is 1
A range of 000 to 3500 is preferred. Particularly preferably, it is 1,500 to 3,000. If it is less than 1000, elastic recovery, heat resistance, hot water resistance, and cold resistance will decrease;
If it is larger than 0, elastic recovery, spinning stability, and strength will decrease. As a compound giving an alkylene group having one methyl branch and having a carbon number of 6 to 1G, for example, 3-methyl-1
, 5bentanediol (MPD) and 2-methyl-1
, 8-octanediol (MOD), and suitable diols that provide other alkylene groups that can be used in combination with them include 1,6-hexanediol, 1,8-octanediol, 1,9-nonanediol, l, 10-
Examples include linear diols such as decanediol,
It is not limited to these in any way.

By using a diol having one methyl branch, both elastic recovery properties and heat resistance are improved. When diols with two or more methyl branches or long side chains such as ethyl, propyl, or butyl groups are used, heat resistance, elastic recovery,
Overall performance such as cold resistance deteriorates. If the number of carbon atoms in the diol is less than 5, the elastic recovery properties, heat resistance, hot water resistance, etc. will decrease, and if it is greater than 10, the elastic recovery properties and transparency will decrease.

Dicarboxylic acids are mentioned as compounds that provide the organic group (R') of the polymeric diol, and among them, aliphatic dicarboxylic acids or aromatic dicarboxylic acids having 6 to j2 carbon atoms are preferred, and fatty acid dicarboxylic acids are particularly preferred.

Furthermore, the polymer diol of the present invention has the above-mentioned (X), (Y)
It is necessary to satisfy the constraints expressed by the formula. (X
) In the formula, if the total carbon number/(number of ester bonds or carbonate bonds) is less than 5, the hot water resistance and cold resistance will decrease, and if it is greater than 11, the elastic recovery will decrease. Preferably it is 6-10. In formula (Y), if the number of methine groups/total number of carbon atoms is less than 0.015, elastic recovery will decrease,
When it is larger than 0.13, heat resistance and elastic recovery properties decrease.

A more preferable range is 003 to 0.10.

The methine group referred to in the present invention is -CB- bonded to three different atoms (which may be the same element) other than hydrogen atoms.

Further, as the carbonate compound used in producing polycarbonate diol, noalkyl carbonate, alkylene carbonate, diaryl carbonate, etc. are preferably used, or the method for producing polycarbonate diol used in the present invention is particularly It is not limited. Among them, the polyurethane elastic yarn, which has excellent elastic recovery even at low temperatures such as -10°C, contains 50% of 3-methyl-1,5-bentanediol as the diol component.
Using a polyester diol obtained by using a diol containing mol% or more and an aliphatic dicarboxylic acid having 7 to 10 methylenes such as azelaic acid, sebacic acid, 1,10-decanedicarboxylic acid as the dicarboxylic acid component. Obtained from polyurethane. When produced by melt spinning, azelaic acid (AZ) and sebacic acid (SA) are particularly preferred in terms of overall performance.

The polyurethane that can be used in the present invention is obtained by polymerizing the polymer diol thus obtained, an organic diisocyanate with a molecular weight of 500 or less, and a chain extender with a molecular weight of 400 or less and having at least two hydrogen atoms capable of reacting with the isocyanate. .

In particular, when producing elastic yarn from thermoplastic polyurethane by melt spinning, 4.4°-nophenylmethane diisonoanate (Iv1DI) is added as a chain extender to the organic noisonoanate used in the synthesis of thermoplastic polyurethane. or 1.4
-butanediol (BD) and 1,4-bis(2-hydroxyethyne)/
), excellent performance in heat resistance, elastic recovery, and elongation can be obtained.

Organic diisocyanate (
The ratio (B)/(A) of B) is 1.5 to 4.
5.It has excellent overall performance such as elastic recovery, heat resistance, and cold resistance.

Furthermore, polymer diol (A), organic diisocyanate (B)
), the composition ratio of the chain extender (C) is (B)/((A
) and (C)) is in the range of 0.9 to 1.2, especially 0.
．． The range of 95 to 115 is preferred. In this range, a polyurethane elastic yarn with excellent heat resistance, elastic recovery, and elongation can be obtained.

Regarding the molar ratio of (B)/((A) and (C)), the temperature is not particularly limited in the case of polyurethane polymerization or melt polymerization that can be controlled during spinning, but it is preferably 200° C. or higher and 260° C. or lower.

The polyurethane used in the present invention is essentially a divalent group in which two hydrogen atoms have been removed from the hydroxyl groups at both ends of a polymeric diol molecule.

b, a general formula derived from an organic diisocyanate (in the formula R3
represents a divalent organic group); A divalent group in which two hydrogen atoms that can react with the isocyanate of the C1 low molecular compound (chain extender) molecule are removed: From the structural unit of It is considered to be.

Examples of methods for producing polyurethane elastic yarn from the polyurethane obtained in this manner include melt spinning, dry spinning, and wet spinning.

In the case of the melt spinning method, the wound yarn is placed under low humidity,
With respect to the glass transition temperature (Tg) of the hard segment, ±
It is preferable to carry out the heat treatment in the range of 20 to -50°C to sufficiently perform phase separation of the hard and soft segments.

The elastic yarn and multifilament obtained in this way can be knitted and woven using a conventional method to make a stretchable fabric, or the elastic yarn as a stretch member can be used as a backing yarn that does not appear on the surface as a yarn. Alternatively, it goes without saying that it can be used as a covered yarn covered with a multifilament used as a face yarn, and there is no limitation on the composition, but from the point of view of stretchability, the content of elastic yarn must be 5% by weight or more. , if it is less than 5% by weight, it lacks tension.

Weaving structures of the stretchable fabric of the present invention include fill, satin, etc., and knitting structures include power net, matsuyu satin, pile, etc. (warp knitting), reversible jersey, smooth, velor, etc. (circular knitting). I can do it.

The gray fabric thus obtained is thoroughly relaxed.

In the present invention, sufficiently relaxing refers to free boiling (98°C) of gray fabric in the normal scouring and relaxing process.
x 5 minutes) with a density of 50% or more of the density (Wale,
course). If this relaxing condition is exceeded, wrinkles will occur, which is not desirable. Then TD+ (35/5)≦T2≦TD without elongating more than 30%
→(10(1/S)...(IV) TD: Sew and dye after dry heat setting at a temperature that satisfies dyeing temperature T and dry heat set temperature.

All of these are important for reducing the shrinkage rate during dyeing.

The shrinkage rate of stretchable fabrics during dyeing is greatly influenced by the fabric's setting properties, dry heat setting conditions, and elongation rate during setting.

However, when all the conditions of the present invention are satisfied, it is surprising that almost no wrinkles or streaks occur even under the conditions of 120 to 30 minutes under which polyester is normally dyed after sewing. The shrinkage rates in these dyeings were 10% or less in both the weld and the weave.

On the other hand, when HDI0% is less than 155℃, heat resistance is low. 1
At 80°C, the elasticity deteriorates significantly when dyeing at 115°C or higher.

Furthermore, if the elongation during setting exceeded 30%, it was not possible to prevent wrinkles from forming. It is preferable that the set rate is 80% or more. If it is less than that, the O shrinkage during dyeing becomes large and wrinkles are likely to occur.

Sewing is done in the usual way, but auxiliary materials (interlining, sewing thread, lining) are used.
Among these, it is especially suitable for the sewing thread to be made of stretchable thread. There are no particular restrictions on the model for setting, but a commonly used setter, such as a pin printer, can be used. At this time, it is best to avoid direct heating as this can easily cause yellowing of the dough.

On the other hand, the present invention is based on the premise that it is to be used after dyeing, and if the dyeing degree is poor, it cannot be used and cannot be dyed. However, if polyester is the main material and it is dyed with disperse dye, polyurethane elastic thread is used! Since it is dyed with I, special attention must be paid to the degree of Kenro. There are two types of disperse dyes: azo and quinone.

Compared to anti-dyeing, product dyeing puts less tension on the fabric (almost free) and causes less damage to the elastic threads.

In particular, the present invention can maintain a strength of 9.7 g/dr, which is almost impossible with anti-dyeing, even during high-temperature, high-pressure dyeing, and therefore has advantages as a stretchable product, such as increased tightening force.

One of the key points in the method of the present invention is to suppress shrinkage during dyeing by dry heat setting, so the processing steps of the present invention are basically greige - scouring/relaxation - presetting - sewing - dyeing - finishing. Particularly when polyester multifilament is used as a surface material, it is preferable to apply a weight reduction process to improve the texture. The weight reduction process may be performed either before or after presetting, but it is preferable to perform it before presetting for ease of dimension control.

(Effects of the Invention) The product dyeing manufacturing method of the present invention makes it possible for the first time to produce a stretchable product dyed product. In addition, the stretch dyed product of the present invention has excellent general dyeing strength and tightening strength, so it can be used not only for swimwear, but also for sports, casual, foundation, ski, and other clothing fields, as well as non-clothing fields. Applicable. In particular, stretch dyed products made of polyurethane elastic yarn and polyester multifilament are completely new.

The present invention will be further explained below with reference to Examples. The measurement method adopted in the present invention is as follows.

(HD, 6°) The elastic yarn was put into the dry heat treatment layer while being 100% stretched.
The temperature is increased from 0°C to 5°C/1 minute and the temperature at which the yarn breaks is measured.

(Measurement of shrinkage rate) Mark the sample after sewing at intervals of 20c+n, and check the size after dyeing. Calculate this question directly.

tυ (Hot water resistance strength retention rate) Elastic fibers are combined with polyester fibers having a denier 2 to 5 times the fibers to form an fti knit (circular knit) fabric, 95 to 98
Relaxation treatment is performed in hot water at ℃ for 10 minutes, and after air-drying the 20 knitted fabrics, preset (180℃ x 1 minute, hot air) and heat to a predetermined temperature (any temperature between 120 and 135℃). The yarn is dyed with water under pressure for 60 minutes under disperse dye dyeing conditions, then air-dried, the knitted fabric is released, only the elastic fibers are taken out, and the threads released from the tube knitting prior to processing are treated using a conventional method. The strength of the yarn after the tube knitting was released was measured, and the retention rate was determined.

(Measurement of tightening force) A sample with a width of 1 inch and a length of 10 cm is taken, stretched to 80% using an Instron, and then returned at the same speed to measure the stress at 50% elongation.

(Measurement of wrinkles) The following 5-level evaluation was performed with the naked eye.

1st grade, no wrinkles at all.

Grade 2: There are almost no wrinkles to worry about.

3rd grade, there are some concerns.

Grade 4: Strong wrinkles are visible.

Grade 5: There are many strong wrinkles.

Judgments were made by 10 people and the average value was taken.

(Measurement of fabric setting rate) Calculated based on the dimension of the fabric before and after presetting.

-r (However, if the elongation is around 0%, calculate the set rate by -f/l.) r: Length before bracing (width) t: Length when bracing is set (width) f: Length after presetting (Width) (Dough setting index) After scouring and relaxing (free-boiling for 5 minutes at 98°C), take a sample of 50cm x 50cm, 300OIX 3
Mark 0cm.

On the other hand, prepare a wooden frame with 30cm x 39cm pins planted in it.

In the case of 2-way (when there is an elongation of 30% or more in both warp and latitude) Latitude set index (S,): Extend the latitude to 39 CTl with the longitude fixed at 30 cm, fix it in a wooden frame, and dry heat at 180 ° C. Set for 1 minute. After removing the sample from the wooden frame and cooling it in an atmosphere of 25°C for 1 hour, measure the latitude (Q).The longitudinal direction is also determined in the same way. Let S be the set index of the sutra.

S≧0.70 means S1≧0.70 and S≧0.70 (R') SI+S! In the formula, S=□ is used.

In case of 1 way Calculate for one direction in the same way as for 2-way.

Example I A polyester consisting of MPD, A, and Z having a total carbon number/ester bond number of 6.93, a methine group number/total carbon number of 0.0825, and a number average molecular weight of 1985, and BD 3
Mixture heated to 0°C and MD heated and melted to 50°C
I and the molar specific strength used of polyester/MDI/BD (1
/3.15/2 was charged into a twin screw extruder and melt polymerization was performed. The generated polyurethane (
PU) was continuously extruded into water in the form of a strand, and then formed into a pellet using a pelletizer. This pellet was vacuum-dried for 80° CIO hours and spun using a single-screw extruder spinning machine at a spinning temperature of 230° C. and a spinning speed of 500 m/min (using a straight oil agent) to obtain a polyurethane elastic yarn of 40 dr-2 f. This thread has a strength of 1.4g/dr and an elongation of 530
%, elastic recovery rate 98% at 20°C, HD+ooa+ 16
R at 3°C and 130°C was 85%.

Next, a warp knitted fabric was knitted from this polyurethane elastic yarn and polyester multifilament drawn yarn 50cl-36f to create a fabric for product dyeing. The conditions are as follows.

Warp draft = double knitting 28 gauge tricot made by WA Nikalmeyer Co., Ltd. Weave: Half thread used Front: Polyester 50d-36f Batch: Polyurethane 40c1 Braid length, front 160cm/4H course back 82cm/480 course on machine Number of courses: 60 courses/in.

The S of this gray fabric was 0.82 and S was 0.80, and the instantaneous elastic recovery rate (50% elongation, 20°C) was 93% vertically and 94% horizontally.

This gray fabric was then refined and preset under the following conditions.

Scouring relax = 80℃ x 1 minute (continuous relaxer)
Setting: 185°C x 1 minute (pin tenter) 25% elongation in the width (weft) direction, 85% set rate, 5% elongation in the warp direction, 90% set rate Next, this fabric was cut and sewn as a swimwear (sewing thread) Polyester false twisted yarn 150d/2) L, dyed and finished under the following conditions.

Dyeing machine Nidram dyeing machine Dye: Sumikaron Red E
-RPD (quinone type manufactured by Sumitomo Chemical Co., Ltd.) 2.0% owf dispersion aid: Disper TL (manufactured by Kaisei Chemical Industry Co., Ltd.)...1 g/QPH adjuster: Ammonium sulfate...1 g/12 Acetic acid ・... 1. g/(:
Bath ratio l 30 Temperature: Raise the temperature from 40°C to 130°C over 30 minutes,
It was maintained at 0°C for an additional 30 minutes.

Reduction cleaning: Hydrosulfite 3g/Q Soda ash 2g/(! Amirazine (Dai Pharmaceutical): 1g/(! Bath ratio
- 130 Temperature: 80°C x 20 minutes At this time, the shrinkage rate during dyeing was 4% for the transverse shrinkage rate and 6% for the linear shrinkage rate. There was almost no shrinkage during reduction cleaning.

Finishing Nisteam Iron Finish Density = 100 courses/in The elongation of this dyed product is 130% warp and 120% weft, and the instantaneous elastic recovery rate at 50% elongation is light 92% and latitude 93.
% (measured at 20°C), indicating good elasticity.

Further, the tightening force was 86 g in warp x 78 g in latitude.

On the other hand, the state of dyeing and wrinkles was observed, and there was almost no difference in hue between polyester and polyurethane. The area near the sewn area after the sewing thread was removed was also well dyed, and there was no difference in color from the center of the fabric. No wrinkles (
Grade 2) It was the same as a cut-and-sew swimsuit (slightly wrinkled) Washing test (JIS L-0844A2 method)
The Kenro degree of water resistance (JIS L-0846B method) is good at grade 4 to 5, and the Kenro degree of light resistance (JIS L-0846B method) is good.
L0842 carbon arc third exposure method) was grade 4-5 and showed good one-light Kenro properties. In addition, the chlorine resistance (JIS L-0856 strong test method) is 4 to 5.
It was class. Furthermore, the instantaneous elastic recovery rate at 0℃ (50%
The elongation (elongation) was also the same as when measured at 20°C.

In addition, the strength of the polyurethane elastic yarn measured after unrolling the product was 0.
．． It was 83g/dr.

Comparative Example 1 The tightening force of a stretchable fabric knitted and dyed under the same conditions as Example 1 without sewing, and set at 160°C for 1 minute to make the density the same, was 74g in warp x 60g in latitude. However, the tightening force was lower than that of the product according to Example 1.

In addition, the strength of the polyurethane elastic yarn after unwinding is 064g/dr.
Met.

Comparative Example 2 Strength as elastic yarn: 1.4 g/dr, HD +ooh
□Knitting was carried out in the same manner as in Example 1 except that a commercially available ether-based polyurethane elastic yarn having an R of 54% at 120°C was used at 80°C.

The set index of the obtained gray fabric is 3. =0.64,S,=0
．． It was 58. This gray fabric was pretreated and dyed in the same manner as in Example 1 except that the presetting was performed at 200° C. and the setting rate was 80%.

The shrinkage rate during dyeing was 8% in warp and 9% in latitude, and there were few wrinkles (grade 3). However, the strength of the elastic yarn after unraveling is 0.40g.
It showed a low value of /dr.

Comparative Example 3 In Example 1, the preset temperature was 150°C (warp setting rate 51%, weft set rate 50%, warp shrinkage rate during dyeing 18%).
The fabric was dyed under exactly the same conditions except that the weft shrinkage rate was 22%), and the fabric had some wrinkles (4th grade) and one streak was visible.

Comparative Example 4 The f-2 greige fabric knitted in Example 1 was preset without shrinking or scouring and relaxing (warp and weft elongation rate 0%). The set rate at this time was 70% longitude and 92% latitude. Then, it was dyed under the same conditions as in Example 1. The fabric after dyeing had strong wrinkles (grade 5).

Comparative Example 5 In Example 1, the elongation in the latitudinal direction during presetting was 50%.
, the elongation in the longitudinal direction was 5%. The set rate at this time is 8
It happened at 2% latitude and 70%. Then, it was dyed under the same conditions as in Example 1. The fabric after dyeing had strong wrinkles (grade 4).

Example 2 The front thread was nylon 6 Sod/11f, the sewing thread was processed with nylon, and the product was knitted and finished under the same conditions as Example 1 except that the presetting and dyeing conditions were as follows. T-ko.

Scouring Relaxation 260°CXI minutes (Continuous Relaxation Set 1-1190°C x 1 minute (Pin tenter)
Elongation in width (weft) direction 30%, set rate 825% Elongation in warp direction 5%, set rate 88% (light set index is 0.8, weft set index is 0.8) Dye: Kayacyl Blue HRL (Japanese) (manufactured by Yakusha)...2% our pH adjuster Ammonium acetate...3% o91f Formic acid...
... 3% OVF bath ratio ・ 1.30 Temperature Raise the temperature from 30°C to 95°C over 30 minutes, and
It was maintained for an additional 30 minutes at °C.

After staining, FTX treatment was performed using a conventional method.

The shrinkage rate during dyeing was 4% warp and 4% ta, with no wrinkles and 1 wrinkle (grade 1). The strength of the unwound polyurethane elastic yarn was 0.80 g/dr. Elongation is warp 130%
It was 4110%. The instantaneous elastic recovery rate at 50% elongation was 93% in warp and 93% in latitude (measured at 20°C), indicating good elasticity. The tightening force was li2g×75g.

In addition, the polyurethane elastic yarn is hardly dyed and has a washing degree (JIS L-0844A2 method) and a water degree (JIS L0846B method) of 4.
It is good at grade 5 and has a light resistance of Kenro (JISL084).
2 carbon arc 3 seismic light method) is grade 4, and its chlorine resistance (JIS L, -0856 strong test method) is grade 4-5.

Patent applicant RiRashi Co., Ltd.

Claims (2)

[Claims] (1) A stretch dyed product made of elastic yarn and thermoplastic fiber with a strength of 0.7 g/dr or more. (2) The strength is 1 g/dr or more and the following (I), (II)
) The following (I
II) After fully relaxing the fabric that satisfies the formula, 30%
A method for producing a stretchable dyed product, which comprises dry-heat setting and sewing at a temperature that satisfies formula (IV) below without elongation, and then dyeing. R≧7800/T (R: hot water resistance strength retention rate T: hot water treatment temperature <140°C)... (I) HD_1_
0_0_%≧155℃ (HD_1_0_0_%: 100
% elongation) (II) 5≧0.7 (S: Set index when elongated by 30% and set at 180°C for 1 minute) (III) T_D+( 35/S
)≦T_P≦T_D+(100/S)...(IV) T_D: Dyeing temperature T_P: Dry heat set temperature