JP2006002283A - Elastic knitted fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight elastic knitted fabric good in skin touch, excellent in moisture-absorbing/releasing tendency, and mitigated in the touch feeling decline and the decline in the elastic recovery percentage of elongation of the cellulosic fiber stretch material due to its laundering. <P>SOLUTION: The elastic knitted fabric is such that elastic fibers and cellulosic fibers ≥4% in stretch percentage of elongation(SB) after undergoing boiling water treatment are interknitted together. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an elastic knitted fabric containing cellulosic fibers and elastic fibers having a stretch elongation (SB) of 4% or more after boiling water treatment. Particularly suitable for innerwear, sportswear, outerwear, etc., knitting with good touch, excellent moisture absorption and release, light weight, keeping motion following even after washing and little change in texture About the ground.

Conventionally, cellulosic fibers such as cotton are favored for their excellent sweat absorption and hygroscopic properties, and are used for inner wear, sports wear, outer wear, and the like.
In recent years, as knitted fabrics that fit the body and move easily have become common, elastic fibers have also been used in knitted fabrics using cellulose fibers. However, since cellulose fibers do not have heat setting properties, when the knitted fabric density is roughened in order to reduce the weight, there is a problem that the stitches are lifted by the shrinkage force of the elastic fibers, and the touch and surface quality are impaired. Furthermore, since cellulose fibers have the property of becoming hardened and hardened after repeated washing, there is a problem that the yarn becomes thin and thin, and the texture tends to become hard during repeated use. When used in combination with washing, there is a problem that the stretch recovery property is lowered by washing and the shape is likely to change due to wearing.

As a knitted fabric containing elastic fibers and cellulosic fibers having a stretch elongation (SB) of 4% or more after boiling water treatment, Patent Document 1 discloses a covering using elastic yarns as a core and cellulose filament fibers as a sheath. A warp knitted fabric using yarn is described as an excellent skin-wearing fabric without misalignment. However, since such a cover yarn has S or Z twist, it is necessary to knit both S and Z in order to suppress skewing. Not good. In addition, since cellulose fibers do not have heat setting properties, it is not possible to expect smoothing of the surface by stretching sets of covering yarns, and those that are satisfactory in terms of touch have not been obtained.
JP 2004-131890 A

  The present invention solves the above-mentioned problems of the prior art, has a good touch and good hygroscopicity, is light in weight, reduces the change in texture due to washing of the cellulose fiber stretch material and the reduction in elongation recovery rate, and forms by wearing The object is to provide a fabric that suppresses changes.

The present inventors have found that the above-mentioned problem can be solved by knitting cellulosic fibers and elastic fibers having a stretch elongation (SB) of 4% or more after boiling water treatment, and complete the present invention. It came to.
That is, the present invention is as follows.
(1) An elastic knitted fabric in which cellulosic fibers and elastic fibers having a stretchable elongation ratio (SB) of 4% or more after boiling water treatment are knitted.
(2) The elastic knitted fabric according to (1), wherein the cellulose fiber has a yarn diameter retention after washing of 75% or more.

  The elastic knitted fabric of the present invention has a good touch and good hygroscopicity, is light in weight and has a low decrease in stretch recovery after washing, changes in texture, and form compared to conventional elastic knitted fabrics using cellulosic fibers. The change is small.

The present invention will be specifically described below, particularly focusing on preferred forms thereof.
The elastic knitted fabric of the present invention is obtained by knitting cellulosic fibers and elastic fibers.
The present invention has the greatest feature in using a cellulosic fiber having a stretch elongation (SB) after boiling water treatment of 4% or more, preferably 7% or more, particularly preferably 10% or more and 50% or less. When it is 4% or more, sufficient bulkiness and lightness can be obtained when it becomes a knitted fabric. In addition, when SB is too large, although bulkiness is large, it becomes a knitted fabric with a feeling of unevenness and the appearance tends to be impaired. The stretch elongation rate was measured according to the JIS-L-1090 stretch test method (Method A).

  In the present invention, the more preferable requirement is that the ratio of the stretch elongation before and after the boiling water treatment (SB / S0) is 0.5 or more, particularly preferably 0.7 or more and 10 or less, when it becomes a knitted fabric. Bulkiness and light weight can be obtained. When SB / S0 is less than 0.5, bulkiness may be impaired by hot water treatment based on scouring or dyeing. When SB / S0 is more than 10, bulkiness is large, but a knitted fabric with a feeling of unevenness is impaired. Tend. SB / S0 is the ratio of the stretch / elongation rate (SB) after the boiling water treatment and drying to the stretch / elongation rate (S0) before the boiling water treatment.

Furthermore, in the present invention, the cellulose IV type crystal component is preferably 20% or more, more preferably 20 to 60%, in a calculation method by X-ray diffraction (described later). Within this range, the form retention due to the wet treatment, which is characteristic of cellulose type IV, is sufficiently exhibited.
Cellulose fibers having a stretch elongation (SB) of 4% or more after boiling water treatment include natural fibers such as cotton and hemp, viscose rayon, cupra ammonium rayon, polynosic rayon, purified cellulose fibers (Tencel, Lyocell). ) And the like, and a mixture of one or more of these.

The shape of the fiber may be long fiber or short fiber, and may be uniform or thick in the length direction, and round, triangular, L, T, Y, W, Leaf type, flatness (with a flatness of about 1.3-4, W type, I type, Boomerang type, wave type, skewer type, eyebrows type, rectangular parallelepiped type, etc.), dogbone type, etc. Polygon type, multi-leaf type, hollow type and irregular shape may be used.
Furthermore, the yarn forms include ring spun yarn, open-end spun yarn, air jet fine spun yarn, multifilament yarn, sweet-twisted yarn to strong twisted yarn, false twisted yarn, air jet yarn, indented yarn Knitted and knitted yarn.

  In addition, within the range which does not impair the object of the present invention, it is usually within a range of 50% by mass or less, and other natural and other than the above-mentioned “cellulosic fiber having a stretching / extracting ratio (SB) of 4% or more after boiling water treatment”. Alternatively, synthetic fibers may be used. For example, natural fibers such as wool and silk, acetate (di, tri), polyethylene terephthalate in addition to cellulosic fibers having a stretch elongation (SB) of less than 4% after boiling water treatment Polyester fiber such as polybutylene terephthalate and polytrimethylene terephthalate, polyamide fiber such as nylon 6 and nylon 66, acrylic fiber, elastic fiber such as polyurethane, etc. There are synthetic fibers such as composite fibers (side-by-side type, eccentric sheath-core type, etc.). One or more of these are blended (blended cotton, fleece blended, sliver blended, core yarn, silo span, silofill, hollow spindle, etc.), blended fiber (low shrinkage yarn with boiling water shrinkage of about 3 to 10%, boiling water shrinkage) Including high-shrinkage yarns with a rate of 15-30% and mixed yarns with different shrinkage yarns, cross-twisting, various twisted yarns, design twisted yarns, covering (single, double), compound false twist (simultaneous false twist, tip Twist false twist (first twist same direction false twist or first twist different direction false twist), phase difference false twist, post-mixing after false twist processing, 2 feed (simultaneous feed or feed difference added), air injection processing, etc. You may mix by a means.

Such cellulosic fibers having a stretchable elongation ratio (SB) of 4% or more after boiling water treatment are disclosed in, for example, JP 2002-54044 A, JP 2002-327343 A, and JP 2004-131890 A. It can be manufactured by the method currently used.
As an example of a preferable production method, there is a method of subjecting the cellulosic fiber of the present invention to a high-pressure hot water treatment after a high-pressure steam treatment. This method is more effective when the cellulosic fiber is applied to false twisted yarn, twisted yarn of 1000 T / m or more. Specific conditions include an absolute pressure of 0.41 to 1.23 MPa and a temperature of 160 to 210 ° C. The treatment time is preferably 300 to 1800 seconds. The high-pressure steam treatment is a device equipped with a conventionally known high-pressure kettle device, and it is sufficient that it can be treated in the form of cheese or beam. For example, a high-pressure kettle described in JP-A-9-31830 is used.

In the case of high-pressure hot water treatment, it is only necessary to have a conventionally known high-pressure kettle device that can perform cheese dyeing or beam dyeing. In the hot water treatment, a vertical processing machine is preferable, and a predetermined treatment is performed by circulating a liquid from the inside of the dyeing beam to the outside after the treatment yarn is mounted in advance and water is put therein. Is.
It is preferable to process with the cheese form which made the winding density 0.30-0.45g / cm < ³ > the thread | yarn form at the time of performing a high pressure steam process and a high pressure hot water process.

  As another preferred production example, when false twisting the filament yarn of cellulosic fiber, moisture is applied to the supply yarn before false twisting, and the yarn is processed at a high temperature of 180 ° C. or higher during twisting. It is manufactured by. As the moisture to be imparted, only water, a surfactant such as a penetrant, or a processing agent for imparting various functions according to the purpose may be added to water. As the surfactant, for example, a nonionic activator such as polyoxyethylene alkyl ether or alkylphenyl ether activator or an anionic activator such as dialkyl succinate or dioctyl sulfosuccinate is used. The amount used is preferably 0.1 to 20 g / liter, more preferably 0.5 to 10 g / liter. Moreover, the fall of the intensity | strength of false twisted yarn can be prevented by providing polyalkylene glycols, such as glycerin, ethylene glycol, polyethylene glycol, polypropylin glycol, etc. with water. Although the water | moisture content to give may be normal temperature or warm water, 15-25 degreeC is preferable. Moisture may be applied in a separate process before false twisting, that is, before creeling, or before the first heater in the false twist process. Alternatively, a false twisting mechanism may be incorporated into the drying process in the filament raw yarn production process of the cellulosic fiber, and the false twisting process may be incorporated during the primary drying. The method of applying moisture includes an immersion method in which the supply yarn is run in water, a nozzle method in which water is ejected from the nozzle, a simple roller method in which the yarn is brought into contact with the surface of the roller wet with water, or in front of the roller. Any method such as a dip roller method in which the yarn is immersed in water and a spraying method in which water is showered on the running yarn may be used. The amount of moisture to be applied is preferably 20 to 130%, more preferably 30 to 100%, of the absolutely dry moisture content of the supply yarn before entering the first heater. The absolute dry moisture content was measured using an infrared moisture meter (trademark, FD-240) manufactured by Kett Science Laboratory.

The false twisting temperature is, for example, when the processing speed is 60 to 100 m / min and the passing time of the contact heater zone is 0.69 to 1.15 seconds, the first heater temperature is preferably 180 to 260 ° C, more preferably 220-260 ° C.
In addition, the absolutely dry moisture content of the yarn immediately after passing through the first heater is more preferably 0 to 15%, particularly 5 to 12%. Alternatively, a two-heater false twisted yarn using a second heater may be used.
The false twisting is preferably processed by a false twisting method in which twisting is performed with a pin, a nip belt, a disk or the like, and in particular, a pin false twisting method is preferable in order to obtain a uniform crimp. Other preferred false twisting conditions are:
Number of false twists = (24000 / D ^1/2 +590) × (0.6 to 1.1)
In the formula, D represents the fineness (dtex) of the supplied yarn.
The first feed rate is −3 to 10%, the take-up (TU) feed rate is 1 to 8%, the twisting tension is 0.05 to 0.29 cN / dtex, and the untwisting tension is (twisting tension) × ( 3.0 to 8.0) times.

The filament yarn of cellulosic fibers supplied for false twisting may be a non-twisted yarn, a sweet twisted yarn, an interlaced entangled yarn, or a composite yarn by interlaced entanglement with a synthetic fiber typified by a polyester-based fiber.
Examples of the elastic fiber used in the present invention include those having rubber elasticity such as polyurethane elastic yarn and polyether ester elastic yarn. Although there is no restriction | limiting in particular in the kind of polymer used for an elastic yarn, and a spinning method, What has an elongation of 400 to 1000% is preferable. In particular, a soft power type having a 300% modulus of 0.002 N / dtex or less such as an elastic yarn containing a component having a side chain such as a 3-methylpentanediol component or a neopentylglycol component in a polyalkylene ether diol component It is more preferable to use the elastic yarn because the crimpability and bulkiness of the cellulose fiber are utilized and a knitted fabric having excellent lightness can be obtained. The fineness of the elastic yarn is appropriately selected depending on the knitting machine, gauge, and knitting structure to be used, but is usually in the range of 20 to 780 dTex. Further, the elastic yarn may be any of a coated yarn coated with a thermoplastic fiber such as bare or synthetic fiber.

The knitting structure of the elastic knitted fabric of the present invention is not particularly limited, and may be a warp knitted fabric, a circular knitted fabric, a flat knitted fabric, or a molded knitted fabric knitted into a garment shape on a knitting machine.
The mixing ratio of the elastic yarn to the constituent yarn of the knitted fabric is preferably 5% by mass to 40% by mass, and more preferably 5% by mass to 30% by mass.
The knitting conditions can be knitted under the conditions used for normal knitting, but the cellulosic fiber of the present invention is bulky and has a large cover factor, so if the loop length or runner length is set larger than the normal knitting conditions, It is possible to obtain a knitted fabric that stretches well, has good shape stability, is lightweight, and has a soft feeling and swelling. Processing such as heat treatment, scouring and dyeing of the knitted raw machine knitted fabric may be performed in accordance with a normal knitted fabric processing method.

When bleaching is required, such as when mixed with cotton, sodium chlorite or hydrogen peroxide bleaching can be used. When hydrogen peroxide bleaching is used, it is preferable to use an embrittlement inhibitor such as a radical scavenger in combination.
In the dyeing stage, functional processing such as antibacterial processing, deodorization processing, and ultraviolet absorption processing can be applied as necessary, and resin processing, raising processing, calendar processing, etc. can be applied as post-processing.

The knitted fabric of the present invention preferably has a yarn diameter retention of 75% or more after washing and drying. The yarn diameter retention rate is preferably as close as possible to 100%, but if it is 75% or more, the texture change due to the sticking of the yarn and the decrease in the stretch recovery rate do not detract from the wearing feeling in actual wearing. In order to obtain a yarn diameter retention of 75% or more, the cellulose IV type crystal component is preferably 20% or more.
The higher the ratio of cellulose IV structure, the better the yarn diameter retention rate.
Conventionally, knitted fabrics containing spun yarn tend to generate pills and fluff on the surface, but the knitted fabric of the present invention suppresses fluff of short fibers and reduces the probability of occurrence of pills. There is also an effect.

The present invention will be described based on examples.
In addition, physical property evaluation was performed by the following method.
(1) Stretch elongation rate The stretch elongation rate (S0) before boiling water treatment is 2 cN / y or less with a measuring machine after the sample is left in a constant temperature and humidity room of 20 ° C. and 65% RH for about 1 week. A wrinkle was made by unwinding with tension, humidity was adjusted in a relaxed state for one day and night, measurement was performed according to the JIS-L-1090 stretchability test method (Method A), and the average value was calculated five times.
Stretch elongation (SB) after boiling water treatment is the same as before boiling water treatment. After relaxing a cocoon made with a measuring machine for a day and night, it is wrapped in gauze in the state of cocoon, and the JIS-L-1013 filament shrinkage rate In accordance with (Method B), after soaking in boiling water for 30 minutes, take out the bag, lightly drain it with your hands, remove the gauze, and then hang it up to 20 ° C and 65% RH standard. After drying and conditioning in an indoor room, measurement was performed according to the JIS-L-1090 stretchability test method (Method A), and the average value was calculated five times.

(2) Mixing ratio of cellulose IV type crystal component Using an X-ray diffraction device (Rigaku Denki, trademark, Rigaku-RINT2000 wide angle goniometer), X-ray source CuK-ALPHAI / 40 kv / 200 mA, diverging slit 1 deg, scattering An intensity distribution is created under the conditions of slit 1 deg, light receiving slit 0.15 mm, scan speed 2 ° / min, scan step 0.02 °, scan axis 2θ / θ, scan range 5 ° to 45 °, and cellulose from the distribution diagram The mixing ratio of the IV type crystal component was calculated.
Cellulose IV type mixture ratio (%) = {(16 ° peak area) / [(16 ° peak area) + (12 ° peak area)]} × 100

(3) Absolutely dry moisture rate It measured using the infrared moisture meter (trademark, FD-240) by Kett Science Laboratory. The absolute dry moisture content was determined by the following formula using a set temperature of 90 ° C., a time when the moisture content change was within 0.1% per minute as a constant weight, and a mass at this time as an absolute dry mass value. .
Absolute dry moisture rate (%) = {(wet mass-absolute dry mass) / absolute dry mass} × 100

(4) Washing method (for 1 time)
The knitted fabric 2 is cut into a size of 60 cm in the course direction and 70 cm in the well direction, the end surfaces in the well direction are stitched together into a cylindrical shape, and an overlock sewing machine is applied to the end surface in the course direction as an assumed undergarment sample. This sample knitted fabric was washed by the 103 method described in JIS-L-0217 Attached Table 1 using 0.7 g / L of detergent attack (trademark, manufactured by Kao Corporation), adding 1 Kg of the total amount of fabric to 30 L.

(5) Yarn diameter retention after washing Photo of the fabric after repeating washing and drying 5 times by the method described in (4) above at a magnification of 150 times, and identifying the loop in the knitted fabric as shown in FIG. The thread diameter of each part was measured by image analysis.
In the measurement, the average value of 10 consecutive loops in the well direction was taken as 1 unit, 10 units were measured at different locations, and the average value was taken as the yarn diameter.
Rate of change in thread diameter (%) = thread diameter after washing / thread diameter before washing x 100

(6) Average stretch recovery rate The fabric after washing and drying was repeated 5 times by the method described in (4) above was cut into 140 mm x 165 mm (tensile side x restraint side), and a uniaxial fixed biaxial stretching tester (STRIP BIAXIAL TENSILE TESTER trademark, KES-G2-SB1 manufactured by Kato Tech). A constant load elongation recovery was performed at a tensile speed of 300 mm / min up to 3.5 N / cm, the elongation recovery rate was measured, and the average value of the process was taken as the average elongation recovery rate.

(7) Finished fabric texture and texture change after washing Holds the fabric before and after washing in an environment of 20 ° C x 65% RH all day and night in three stages as follows by sensory inspection by 10 people Evaluation was performed.
Finished fabric texture judgment display ○: Smooth and soft to the touch
Δ: Smooth and uncomfortable to the touch.
×: Feels rough.
Feeling change before and after washing Judgment display ○: Almost no change before and after washing.
Δ: The fabric after washing is slightly hard before and after washing.
X: It is hard.

<Manufacturing method of cellulosic fiber having a stretch elongation (SB) of 4% or more after boiling water treatment>
(Production Example 1)
110 dtex / 60 f cupra ammonium rayon yarn (manufactured by Asahi Kasei Fibers Co., Ltd .: Trademark Bemberg: tensile strength 23.2 cN / tex, tensile elongation 8.9%, boiling water shrinkage 4.3%) and a pin false twister Then, false twisting was performed at a false twist temperature of 200 ° C., a feed rate of 1%, and a false twist number of 1500 T / m. Subsequently, the false twisted yarn was wound around a dyed bobbin with a winding density of 0.30 g / cm ³ , fixed with a spacer, and set in a vertical high-pressure kettle.
Subsequently, after reducing the pressure, high-pressure steam treatment was performed at 180 ° C. for 5 minutes at a pressure of 0.97 Mpa. Next, after adding water and defoaming by pressurization, high-pressure hydrothermal treatment was performed at 180 ° C. for 10 minutes at a pressure of 0.97 Mpa while circulating the liquid from the inside to the outside of the dyed bobbin. And dried at 80 ° C. for 60 minutes. The obtained false twisted yarn had SB = 11.5%, (SB / S0) = 1.10, and the mixture ratio of cellulose IV type was 24%.

(Production Example 2)
Using an 84 dtex / 45f cupra ammonium rayon filament (manufactured by Asahi Kasei Fibers Corp .; trademark Bemberg: tensile strength 23.0 cN / tex, tensile elongation 9.1%, boiling water shrinkage 4.5%), a false twisting machine ( Ishikawa Seisakusho: trademark, IVF-338, twisting mechanism is pin type, contact heater, heater length 115cm), processing speed 100m / min, heating time 0.69 seconds, spindle rotation speed 230,000rpm, false twist number It was set to 2300 T / m (Z twist), a first feed rate of 0%, and a TU feed rate of 4%.
After applying a tension of 2.9 cN / yarn to the yarn supplied from the creels and applying water by the dipping method of running in water in front of the first heater, it is brought into contact with an acute ceramic plate, and air suction is used. The attached water was removed to make the absolute dry moisture content 40%, and false twisting was performed at a first heater temperature of 250 ° C.
The obtained false twisted yarn had SB = 21.0%, (SB / S0) = 2.53, and the mixture ratio of cellulose IV type was 58.8%.

(Production Example 3; comparison)
In Production Example 1, the same treatment as in Production Example 1 was conducted except that high-pressure hot water treatment was not performed.
The obtained false twisted yarn had SB = 2.9%, (SB / S0) = 0.42, and the mixture ratio of cellulose IV type was 0%.
(Production Example 4; comparison)
In Production Example 2, false twisting was performed in the same manner as in Production Example 2 except that no moisture was applied.
The obtained false twisted yarn had SB = 2.5%, (SB / S0) = 0.48, and the mixture ratio of cellulose IV type was 0%.

[Example 1]
A bare tengu was knitted using the processed yarn obtained in Production Example 1 and polyurethane elastic yarn, trade name, Roika SC 22 dtex) manufactured by Asahi Kasei Fibers Co., Ltd. The processed yarn was knitted with a loop length of 2.85 mm / mesh and Df 2.7. This knitted fabric was immersed in water, dehydrated at a mangle pressure of 1.5 kg / m ² , and preset at 180 ° C. for 60 seconds. Then, it scoured for 20 minutes at 80 degreeC using score roll FC-250 (trademark, Kao Corporation make) 2g / L, and it dye | stained on the following conditions.
Sumifix Supra Brill.Yellow 3GF 0.10% owf Made by Sumitomo Chemical
Sumifix Supra Brill.Red 3BF 0.03% owf 〃
Sumifix Supra Blue BRF 0.02% owf 〃
Sodium sulfate 30g / L
Sodium carbonate 15g / L
60 ° C. × 60 minutes After completion of dyeing, dehydrated and air-dried. Amino-organized silicon softener Nikka Silicon AMZ-3 (trademark, manufactured by Nikka Chemical Co., Ltd.) 2% sol.
After dipping in about 100% of the pickup, final setting was performed at 180 ° C. for 60 seconds. The properties and physical properties of the obtained knitted fabric are shown in Table 1.

[Example 2]
A half tricot knitted fabric was knitted by placing the processed yarn obtained in Production Example 2 on the front and polyurethane elastic yarn (trade name, Leica SC 44dTex, manufactured by Asahi Kasei Fibers Co., Ltd.) on the back.
The knitting machine used was a tricot knitting machine manufactured by KARL MAYER, and the runner length was set at the front 160 cm / 480 course and the back 80 cm / 480 course. The elastic yarn used was warped at 100% elongation.
The knitted fabric was dyed and finished in the same manner as in Example 1. The properties and physical properties of the obtained knitted fabric are shown in Table 1.

[Comparative Example 1]
The bare yarn was knitted and dyed using the processed yarn obtained in Production Example 3 under the same conditions as in Example 1. The properties and physical properties of the resulting knitted fabric are shown in Table 1.

[Comparative Example 2]
A half tricot knitted fabric was knitted and dyed and finished using the processed yarn obtained in Production Example 4 under the same conditions as in Example 2, and the properties and physical properties of the resulting knitted fabric are shown in Table 1.

[Comparative Example 3]
Using a covering machine manufactured by Kataoka Machinery under the conditions of a spindle rotation of 9000 rpm and a cover number SZ of 300 T / m, the processed yarn obtained in Example 1 was used as a sheath yarn, and an elastic fiber (trademark manufactured by Asahi Kasei Fibers Co., Ltd., Leuka SC 22 dtex) was used as the core. A covering yarn was formed on the yarn at a draw ratio of 3 times.
Tendon knitted fabrics were knitted with Otsuka Morato under the same conditions as in Example 1 except that the obtained covering yarns SZ were alternately arranged and the elastic fibers were plated with a bear. The resulting knitted fabric was dyed and finished in the same manner as in Example 1, and the properties and physical properties are shown in Table 1. Due to the twist of the stitch by SZ torque, it was a knitted fabric with a rough feeling and inferior to the touch.

  The elastic knitted fabric of the present invention is a cellulose stretch knitted fabric that is lightweight and reduces changes in texture and elongation recovery rate due to washing of the cellulose fiber stretch material, and suppresses changes in form due to wearing. Inner wear, outer wear It is an elastic knitted fabric suitable for sportswear and the like.

Explanatory drawing which shows the example of a thread diameter measurement location.

Claims (2)

  An elastic knitted fabric characterized in that cellulosic fibers and elastic fibers having a stretch elongation (SB) of 4% or more after boiling water treatment are knitted.   The elastic knitted fabric according to claim 1, wherein the cellulose fiber has a yarn diameter retention after washing of 75% or more.