JP2001348762A - Elastic knit fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an elastic knit fabric capable of being readily worn and undressed at a power level ranging from a soft power to a hard power and excellent in follow-up properties to movement and feeling of wearing. SOLUTION: (1) This elastic knit fabric comprises elastic yarns and nonelastic yarns and the respective elongations of the elastic knit fabric in the warp and weft direction are 80-150% under 3.5 N/cm load and 100-200% under 9,8 N/cm load. (2) The elastic knit fabric has a stress applied to the knit fabric in a restrained direction within the range of 0-1.0 N/cm even when either one of the warp and weft directions is stretched during the restraining of either one of the warp and weft directions of the elastic knit fabric and the stretching of the other direction to 3.5 N/cm. (3) The elastic knit fabric as set forth in claim 1 or 2, wherein the nonelastic yarns are polytrimethylene terephthalate fibers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic knitted fabric, and more particularly to an elastic knitted fabric suitable for innerwear such as a foundation and outerwear for sports use.

[0002]

2. Description of the Related Art As warp knitted fabrics, two-way tricot knitted by a tricot knitting machine, satin net, power net, tricot knitted by a Russell knitting machine are used as warp knitted fabrics. Examples include net knitted fabric and bare sky knitted fabric knitted by a circular knitting machine. In general, in a satin net, a triconet and a power net knitted fabric, since the elastic yarn is inserted in the warp direction, the elongation in the warp direction is large, but the elongation in the weft direction is insufficient. These elastic knitted fabrics (hereinafter sometimes simply referred to as “fabric”) are usually
It is used so that the longitudinal direction of the fabric is the circumferential direction of the human body, and the weft direction of low elongation is used to be the height direction of the person, so when worn as a girdle, for example, the waist of the girdle due to the crouching action There is a drawback that the parts of the body and the base of the legs are displaced or stretched, resulting in inferior exercise followability. In order to improve these drawbacks, a Russell knitted fabric in which two kinds of elastic fibers are inserted to improve the weft elongation of the fabric has been proposed, but the fabric obtained by such a method has been compared with the conventional one. However, the degree of elongation of the fabric was not equalized, and the wearing comfort was still insufficient.

[0003] In addition, the innerwear is required to have elasticity of various power levels from soft to hard according to the purpose of body shape correction and the like. Because of the tendency,
It is difficult to attach and detach, it is inferior to the body shape correction effect and fit, the load on the elastic yarn is large, the deterioration of the elastic yarn due to expansion and contraction fatigue is easy to progress, and accidents such as breaking through the fabric with fingers etc. occur, and in terms of durability, There was a problem. On the other hand, hard-powered fabrics generally have insufficient elongation, so that it is difficult to follow the exercise, and it causes discomfort such as a feeling of tension and slippage, and a sufficiently satisfactory wearing comfort has not been obtained.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide an elastic knitting which is easy to attach and detach at any power level from soft to hard, and is excellent in exercise followability and wearing feeling. To provide land.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, the present inventors have made intensive studies on the elongation characteristics of a fabric that follows the elongation of the skin due to the movement of a person, and as a result, follow the movement of the person in the height direction. The stress in the height direction when the fabric is stretched and the stress of the fabric in the circumferential direction of the human body greatly affect the feeling of wearing, and when the knitted fabric has predetermined elongation in both the warp and weft directions, It has been found that it is possible to obtain an elastic knitted fabric which is excellent in detachability and comfortable to wear, and that the durability of the fabric can be improved by suppressing unnecessary elongation of the fabric, and has reached the present invention. is there.

That is, the invention claimed in the present application is as follows. (1) An elastic knitted fabric composed of an elastic yarn and an inelastic yarn, wherein the elastic knitted fabric has respective elongations in the warp and weft directions,
An elastic knitted fabric characterized by being 80 to 150% under a load of 3.5 N / cm and 100 to 200% under a load of 9.8 N / cm. (2) When the elastic knitted fabric is constrained in one of the warp and weft directions and is stretched to 3.5 N / cm in the other direction, it is constrained in any of the warp and weft directions. The elastic knitted fabric according to (1), wherein the stress applied to the knitted fabric in the direction is in a range of 0 to 1.0 N / cm. (3) The elastic knitted fabric according to (1) or (2), wherein the inelastic yarn is a polytrimethylene terephthalate fiber.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The elastic knitted fabric of the present invention is composed of an elastic yarn and an inelastic yarn. Examples of the elastic yarns used in the present invention include polyurethane elastic yarns and polyetherester elastic yarns having rubber elasticity. There are no particular restrictions on the type of polymer or spinning method used for the elastic yarn, but it has a breaking elongation of 400 to 1000%, is excellent in elasticity, and has a normal processing temperature of 1 in the presetting step during dyeing.
At around 80 ° C., an elastic fiber that does not impair elasticity is preferred. In particular, a polyurethane elastic fiber of a soft power type containing a component having a side chain such as a 3-methylpentanediol component or a neopentyl glycol component in a polyalkylene ether diol component and having a 300% modulus of 0.002 N / dtex or less. preferable. 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. The elastic yarn may be either a bare yarn or a coated yarn.

[0008] The inelastic yarn used in the present invention is not particularly limited, and known fiber types and fibers of known forms can be used. Examples include natural fibers such as wool and silk, cellulosic fibers such as cupra and rayon, semi-synthetic fibers such as acetate, polyester fibers such as polyethylene terephthalate and polytrimethylene terephthalate, and synthetic fibers such as nylon. In addition, the form of the fiber is short fiber,
Long fibers, round or irregular cross-sections may be used, as well as high-speed spun yarns such as raw yarns, spin take-up yarns and spin draw take-up yarns, thick and thin yarns, design yarns, and false twisted yarns (including POY drawn false twisted yarns). And the like can be used. In addition, a composite yarn obtained by a known composite means such as blending, blending, twisting, composite false twisting, fluid jetting, etc., in which one or more of these fiber types and forms are combined, may be selected as necessary. it can. In particular, it is preferable to use polytrimethylene terephthalate fiber from the viewpoint that a soft and soft texture can be obtained.

In the present invention, the polytrimethylene terephthalate fiber refers to a polyester fiber having a trimethylene terephthalate unit as a main repeating unit, and the trimethylene terephthalate unit is at least about 50 mol%, preferably at least 70 mol%, more preferably at least 70 mol%. Means 80 mol% or more, more preferably 90 mol% or more. Therefore, the total amount of other acidic components and / or glycol components as the third component is about 50 mol% or less, preferably 3 mol% or less.
It includes polytrimethylene terephthalate contained in a range of 0 mol% or less, more preferably 20 mol% or less, and still more preferably 10 mol% or less. Polytrimethylene terephthalate is synthesized by combining terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under appropriate reaction conditions. In this synthesis process, an appropriate one or two or more third components may be added to form a copolymerized polyester, or a polyester other than polytrimethylene terephthalate such as polyethylene terephthalate and polybutylene terephthalate, and a nylon and polytrimethyl terephthalate. After separately synthesizing methylene terephthalate, blending or composite spinning (sheath core, side-by-side, etc.) may be performed.

Regarding composite spinning, Japanese Patent Publication No. 43-191
08, JP-A-11-189923 and JP-A-2
000-239927, JP-A-2000-2569
No. 18, publication No. 18, etc., the first component is polytrimethylene terephthalate, the second component is polytrimethylene terephthalate, polyethylene terephthalate, polyester such as polybutylene terephthalate, nylon and the like, these are parallel or eccentric A method of performing a composite spinning into a side-by-side type or an eccentric sea core type arranged at a position is known. In particular, a combination of polytrimethylene terephthalate and copolymerized polytrimethylene terephthalate and a combination of two kinds of polytrimethylene terephthalate having different intrinsic viscosities are preferable. In addition, JP-A-2000-
Using two types of polytrimethylene terephthalate having different intrinsic viscosities as exemplified in 239927, a composite spinning into a side-by-side type in which the joining surface shape is curved so that the low viscosity side wraps around the high viscosity side, It is particularly preferable because it has both high stretchability and bulkiness.

As the third component to be added, aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexane dicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.) ), Aliphatic glycols (ethylene glycol, 1,2
-Propylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexane dimethanol, etc.), aliphatic glycols containing aromatics (1,4-bis (β-hydroxyethoxy) benzene, etc.), polyether glycols (polyethylene glycol) , Polypropylene glycol and the like), aliphatic oxycarboxylic acids (ω-oxycaproic acid and the like), aromatic oxycarboxylic acids (P-oxybenzoic acid and the like) and the like. Compounds having one or more ester-forming functional groups (such as benzoic acid or glycerin) can also be used in a range where the polymer is substantially linear.

Further, matting agents such as titanium dioxide, stabilizers such as phosphoric acid, ultraviolet absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, lubricating agents such as aerosil, and antioxidants such as hindered phenol derivatives. Agents, flame retardants, antistatic agents, pigments, optical brighteners, infrared absorbers, defoamers, and the like. In the present invention, the spinning of the polytrimethylene terephthalate fiber is 1500 m /
After obtaining an undrawn yarn at a winding speed of about 3 minutes, a method of twisting by about 2 to 3.5 times, a direct drawing method (spin draw method) in which a spinning-drawing step is directly connected, and a winding speed of 5000 m / Any method such as a high speed spinning method (spin take-up method) for more than one minute may be employed. The form of the fiber may be a long fiber or a short fiber, may be uniform in the length direction or may be thick and thin, and the cross section may be round, triangular, L-shaped, T-shaped, Y-shaped.
It may be a polygonal type such as a type, a W type, an eight type, a flat type, a dog bone type, etc., a multi type, a hollow type or an irregular type.

Further, the form of the yarn may be a spun yarn such as a ring spun yarn or an open-end spun yarn, a multifilament raw yarn (including an ultrafine yarn) having a single yarn denier of about 0.1 to 5 denier, a sweet twisted yarn or the like. Strong twisted yarn, mixed yarn, false twisted yarn (PO
Y drawn false twisted yarn), an air jet processed yarn, and the like. In addition, usually 30 as long as the object of the present invention is not impaired.
Blending of other fibers such as wool within the range of weight% or less, such as natural fiber (silospan or silofil, etc.), interlaced blending (different shrinkage blended yarn with high shrinkage yarn, etc.), intertwist, composite temporary Twist (elongation difference false twist, etc.) may be mixed by means such as two-feed fluid jetting.

The knit structure of the elastic knitted fabric in the present invention is not particularly limited, and may be a warp knitted fabric, a circular knitted fabric, or a flat knitted fabric, but a warp knitted fabric is particularly preferred. The elastic knitted fabric in the present invention has an elongation of 3.5 N / in each of the warp and weft directions.
80-150% under a load of cm, preferably 100-1%
30%, and 100 to 100% under a load of 9.8 N / cm.
It needs to be 200%, preferably 140-200%. In the present invention, the elongation means a uniaxial fixed biaxial elongation tester (STRIP BIAXIAL TENSIL).
E TESTER KES-G2-SB1 manufactured by Kato Tech). By measuring the elongation of the dough in one direction while constraining the dough in one direction, the elongation in practical use can be measured. Note that the conventional elongation measurement method is a method in which only the direction of elongation is fixed and the other directions are measured without being constrained.

The load of 3.5 N / cm corresponds to a force that can be pulled by an average human force. Therefore, although a person's perception of the fabric such as soft or hard in the circumferential direction is different depending on the product concept and personal preference, 3.5N.
Of the elastic knitted fabric in the warp direction under a load of
If it is less than%, the fabric is generally insufficiently stretched, and extra force is required for attachment and detachment. On the other hand, when the degree of elongation in the weft direction is less than 80%, the skin stretches in the direction of elongation of the person due to exercise such as bending down to a maximum of 50%. Discomfort such as displacement of the underbody portion occurs. When the elongation in each of the warp and weft directions of the elastic knitted fabric exceeds 150% under a load of 3.5 N / cm, the stretch fatigue of the elastic yarn increases, the durability decreases, and the strength of the fabric decreases. I do.

The above-mentioned load of 9.8 N / cm corresponds to the degree of elongation of the dough, and corresponds to the local and instantaneous force applied to the dough as seen in an accident such as breakage of the dough by a consumer. In order to prevent such an accident, the elongation should be 2
It is necessary to suppress the density of the dough when it is fully stretched to less than 00%. From this point, it is better that the elongation under a load of 9.8 N / cm is small. However, in order to secure the comfort at the time of attachment / detachment, 100% under a load of 9.8 N / cm.
% Or more is required.

Further, the elastic knitted fabric of the present invention restrains any one of the warp and weft directions (restricted side),
When the other (extension side) is extended to 3.5 N / cm,
The stress on the restraint side is preferably from 0 to 1.0 N / cm, more preferably from 0 to 0.8 N / cm, regardless of whether it is stretched in any of the warp and weft directions. Due to the action of crouching, the fabric is stretched in the height direction of the person, but the stress increases in the circumferential direction of the human body, and the greater the increase in the stress, the tighter the fabric, and the worse the feeling of wearing. Therefore, the smaller the stress, the better, but 1.0 N /
cm or less does not significantly deteriorate the feeling of wearing. The elastic knitted fabric having the above physical properties is, for example, by adding one more inelastic yarn to a Russell knitted fabric or tricot knitted fabric and inserting a non-elastic yarn, or chain knitting, a denby structure,
It can be obtained by weaving the cord organization. A method of inserting an inelastic yarn is preferable from the viewpoint of easy elongation control.

In the case of the insertion structure, the appropriate range of the runner length varies depending on the Young's modulus and elongation of the yarn used for the insertion yarn.
For example, in the case of polyamide fiber or polyethylene terephthalate fiber used for inner use, the runner length of the inelastic fiber to be inserted is set to 10 to 14 cm / 480 under the on-machine course condition of 90 to 80 courses / inch which is a normal condition.
The course cannot be made longer than the course, but by setting the on-board course conditions of 75-60 courses / inch,
The runner length of the inelastic fiber inserted up to the 0 cm / 480 course can be lengthened, and the target elongation range can be set.

As the inelastic yarn inserted to control the elongation, an inelastic yarn having the above-mentioned known fiber type and form can be used. Forms are available. The runner length may be selected as necessary, and set to the runner length that becomes the target elongation during knitting. When short fibers are inserted, the slippage is lower than that of filaments, so the elongation at low stress is small, and the recovery may be poor.Fuzz may appear on the surface, and the fabric quality may be reduced. Therefore, it is preferable to use a filament as the inelastic yarn to be inserted.

The inelastic yarn to be inserted preferably has a breaking strength of 1.5 N or more so as to withstand the stretching load of the cloth. Also, by using polytrimethylene terephthalate fiber or the like having a high elastic recovery rate for the insertion yarn, the range of knitting conditions satisfying the above conditions is widened, and even when the on-machine course is 80 courses / inch, the runner length can be reduced by one.
It can be set to 6 to 20 cm. This is because the polytrimethylene terephthalate fiber has a good elastic recovery rate, can easily follow the movement of the needle during knitting, and can easily obtain a runner length. By using such a polytrimethylene terephthalate fiber for the insertion yarn, the elongation can be easily controlled.

Further, even if the insertion yarn for controlling the elongation forms a loop at a constant rate, the elongation can be controlled. The appropriate interval for forming the loop varies depending on the ground structure, but it is appropriate to form the loop once every 2 to 50 courses, more preferably once every 2 to 5 courses. In this case, the stitch having the loop formed thereon has a bulkier loop shape than the inserted stitch. Therefore, when an inelastic yarn having a large fineness is used, a weft occurs, and the fabric quality is reduced. Therefore, the fineness of the inelastic yarn used is 85 dtex or less, preferably 60 dt.
ex or less is appropriate. By forming a loop partially in this way, the displacement of the elongation control yarn in the cloth being worn is less likely to occur than in the case of only insertion.

Further, the elongation can be adjusted by combining a chain stitch, a denby structure, and a cord structure at a fixed ratio. In this case, it is necessary to overlap a tissue having a smaller swing width with a certain ratio or more with respect to the swing width of the ground tissue. For example, a chain structure may be superimposed on a denby structure portion of the ground structure, and a denby structure or a chain structure may be superimposed on the code structure portion of the ground structure at a predetermined ratio so as to obtain a predetermined elongation range. The overlapping ratio depends on the combination of the tissues to be superimposed, but is 5 to 50%, preferably 5 to 30%, of the denby organization and the cord organization of the ground organization.
Is appropriate. For example, when a six-course satin net organization is used as the ground organization, the ground organization is a repetition of two chain organizations and one denby organization. Of these, the elongation can be controlled by superimposing the chain structure of the elongation control yarn on the denby structure. The structure of the elongation control yarn superimposed on the chain structure of the ground structure may be any of a chain structure, a Denby structure, and a cord structure. Further, the elongation control yarn superimposed on the ground structure may be at any of the front, middle and back positions.

The elastic knitted fabric of the present invention can be obtained by using a circular knitting machine. In this case, as a method, the yarn feeder portion for knitting the ground structure and the yarn feeder portion for elongation control are organized separately, and the loop of the elongation control portion is made smaller than the loop of the ground structure portion. Methods include a method of controlling the elongation in the weft direction by using a combination of a knit loop and a welt loop for the tissue of the portion to be controlled for elongation. In this case, the elongation becomes less likely to occur as the number of welt loops increases.

[0024]

EXAMPLES The present invention will be described below in more detail with reference to Examples, but the present invention is not limited thereto. In addition,
The knitted fabric was evaluated by the following method. (1) Elongation The sample was cut into 140 mm x 165 mm (tensile side x restraint side), and the uniaxial fixed biaxial extension tester (STRIP BIAX) was used.
IAL TENSILE TESTER KES-G2
-SB1 manufactured by Kato Tech). At this time, the effective dimension of the sample to which stress is applied is 100 mm × 100
mm, and the effective sample length for elongation conversion is 11.5 cm.
It is. Constant load elongation up to 10 N / cm at a pulling speed of 300 mm / min, 3.5 N / cm and 9.8 N / c
The elongation (%) on the elongation side under m load was read, and N = 2
Was calculated.

(2) Stress on the extension side 3.5 N / cm Constraint side during constant load extension A sample was attached to the uniaxial fixed biaxial extension tester, and a constant load of 3.5 N / cm was applied at a tension speed of 300 mm / min. Stretch recovery was repeated three times, and 3.5 N / c at the third time
The elongation on the restraining side under an m load was read, and the average value of N = 2 was determined. (3) Burst strength Based on JIS-L-1018A method. (4) Wearing feeling and displacement of thigh line A long girdle was produced using the fabrics obtained in the examples and comparative examples, and was worn by three panelists. The thigh displacement was determined by erecting a thigh line at a predetermined position upright, repeating the crouching operation ten times, measuring the shearing up, and indicating the average value of three persons. The feeling of wearing shows the results of a questionnaire survey on putting on and taking off and feeling of wearing, and was evaluated as follows. ◎ ○: Very good and soft texture ◎: Very good ○: Good △: Lack of fit, ×: Distorted when bent down

Example 1 Nylon 6 44dtex / 34f was placed on the front and back, and polyurethane elastic fiber (made by Asahi Kasei Corporation, trade name Leica SC type) 310dtex was placed on the middle.
A Russell knitted fabric was knitted under the following conditions. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Knitting machine KARL MAYER Russell knitting machine 56 gauge / 2 inch Tissue Front 20/02/20/24/42/24 Middle 00/44/22/66/22/44 Back 00/22/00 / 22/00/22 Runner length Front 122cm / 480 course Middle 11.4cm / 480 course Back 16.0cm / 480 course Aircraft course 75 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
And finished to C / W (knitting density) shown in Table 1. Table 1 shows the physical properties of the obtained knitted fabric.

Example 2 Nylon 6 44dtex / 34f was placed on the front and back, and polyurethane elastic fiber (manufactured by Asahi Kasei Corporation, trade name Leica SC type) 310dtex was placed on the middle.
A Russell knitted fabric was knitted in the same structure as in Example 1. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Runner length Front 122cm / 480 course Middle 11.4cm / 480 course Back 17.6cm / 480 course Aircraft course 75 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
And finished to C / W shown in Table 1.
Table 1 shows the physical properties of the obtained knitted fabric.

Example 3 Russell knitted fabric with the same structure as in Example 1 except that nylon 6 (44 dtex / 34f) is arranged on the front and back, and polyurethane elastic fiber (produced by Asahi Kasei Corporation, Leica SC type, trade name) 310 dtex is arranged on the middle. Was organized. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Runner length Front 126cm / 480 course Middle 15.5cm / 480 course Back 20.0cm / 480 course Aircraft course 60 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
And finished to C / W shown in Table 1.
Table 1 shows the physical properties of the obtained knitted fabric.

Example 4 Nylon 6 44dtex / 34f was arranged on the front and back, and polyurethane elastic fiber (manufactured by Asahi Kasei Corporation, trade name: Leica HS type) 310dtex was arranged on the middle.
A Russell knitted fabric was knitted in the same structure as in Example 1. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Runner length Front 122cm / 480 course Middle 11.4cm / 480 course Back 17.6cm / 480 course Aircraft course 75 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
And finished to C / W shown in Table 1.
Table 1 shows the physical properties of the obtained knitted fabric.

Example 5 Nylon 6 44 dtex / 34f was placed on the front and back, and polyurethane elastic fiber (trade name: Leica HS type, manufactured by Asahi Kasei Corporation) 160 dtex and 44 dtex were placed on the middle 1 and 2 and Russell knitted under the following conditions. The ground was organized. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Knitting machine KARL MAYER Russell knitting machine 56 gauge / 2 inch Tissue Front 20/24/42/46/42/24 Middle 1 22/00/22/00/22/00 Middle 2 66/44 / 66/00/22/00 Back 00/22/00/22/00/22 Runner length Front 112cm / 480 course Middle 1 11cm / 480 course Middle 2 32cm / 480 course Back 17cm / 480 course Onboard course 75 course /inch

The obtained knitted fabric was relaxed in warm water at 90 ° C., pre-set at 190 ° C., dyed at 95 ° C. for 30 minutes, finished at 170 ° C., and subjected to C / W shown in Table 1.
Finished. Table 1 shows the physical properties of the obtained knitted fabric. FIG. 1 shows the tensile stress curve of the obtained knitted fabric. As is clear from FIG. 1, the obtained knitted fabric was 3.5 N in both processes.
It has an elongation of 80 to 150% under a load of / cm and a range of 100 to 200% under a load of 9.8 N / cm. ,
The knitted fabric has a high burst strength.

Example 6 Polytrimethylene terephthalate having ηsp / c = 0.8 was obtained at a spinning temperature of 265 ° C. and a spinning speed of 1200 m / min to obtain an undrawn yarn, and then a hot roll temperature of 60 ° C. and a hot plate temperature of 140 ° C. Stretching magnification 3 times, stretching speed 800m /
Then, a drawn yarn of 56 dtex / 36f was obtained.
The strong elongation, the elastic modulus and the elastic recovery at 10% elongation of the drawn yarn are 28.3 cN / dtex, 46% and 265.
5 cN / dtex and 98%. In addition, 10%
The elastic recovery during elongation was determined by the following method.

The fiber was attached to a tensile tester with a distance between chucks of 10 cm, and a tensile speed of 20% until the elongation was 10%.
It extended at cm / min and was left for 1 minute. Thereafter, the material is contracted again at the same speed, and a stress-strain curve is drawn. The elongation when the stress becomes zero during shrinkage is defined as residual elongation (A). The elastic recovery was determined according to the following equation. Elastic recovery at 10% elongation = [(10−A) / 10] × 1
00 (%) Further, ηsp / c is obtained by dissolving the polymer in o-chlorophenol at a concentration of 1 g / deciliter at 90 ° C., then transferring the obtained solution to an Ostwald viscometer and measuring at 35 ° C., and calculating by the following formula. did. ηsp / c = (T / T ₀ −1) / C T: Fall time of sample solution (second) T ₀ : Fall time of solvent (second) C: Solution concentration (g / deciliter)

Polytrimethylene terephthalate 56 dt
ex / 36f front and back, polyurethane elastic fiber (Asahi Kasei Co., Ltd., product name Leica SC type) 3
10 dtex was arranged in the middle, and a Russell knitted fabric was knitted in the same structure as in Example 1. [Russell knitting conditions] Runner length Front 128cm / 480 course Middle 13.4cm / 480 course Back 18.0cm / 480 course Aircraft course 80 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
And finished to C / W shown in Table 1.
Table 1 shows the physical properties of the obtained knitted fabric.

COMPARATIVE EXAMPLE 1 Nylon 6 44dtex / 34f was placed on the front and back, and polyurethane elastic fiber (made by Asahi Kasei Corporation, trade name Leica SC type) 310dtex was placed on the middle.
A Russell knitted fabric was knitted in the same structure as in Example 1. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Runner length Front 122cm / 480 course Middle 11.4cm / 480 course Back 14.0cm / 480 course Aircraft course 80 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
And finished to C / W shown in Table 1.
Table 1 shows the physical properties of the obtained knitted fabric. 80 on-board courses
In the case of the course / inch, the back runner length could only be reduced to a yarn tension of 14 cm, and the target elongation range could not be obtained.

Comparative Example 2 Nylon 6 44dtex / 34f was placed on the front and back, and polyurethane elastic fiber (manufactured by Asahi Kasei Corporation, trade name Leica SC type) 310dtex was placed on the middle.
A Russell knitted fabric was knitted in the same structure as in Example 1. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Runner length Front 126cm / 480 course Middle 15.5cm / 480 course Back 23.0cm / 480 course Aircraft course 60 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
And finished to fabric having C / W shown in Table 1. Table 1 shows the physical properties of the obtained knitted fabric.

Table 1 shows that when the elastic knitted fabrics obtained in Examples 1 to 6 were used, the displacement caused by the movement was eliminated, and the feeling of wearing and the detachability were excellent. In contrast, in Comparative Example 1, the elongation in the warp and weft directions under a load of 3.5 N / cm was small, and the elongation in the weft direction under a load of 9.8 N / cm was small. Since the stress on the constraint side of 0.5 N / cm was too large, the feeling of wearing was significantly reduced. In Comparative Example 2, the elongation in the warp direction under a load of 3.5 N / cm was large, and the elongation in the warp direction under a load of 9.8 N / cm was too large. And a better fit could not be obtained.

[0038]

[Table 1]

Example 7 Nylon 6 44dtex / 34f was placed on the front and back, and polyurethane elastic fiber (made by Asahi Kasei Corporation, trade name Leica HS type) 390dtex was placed on the middle.
A Russell knitted fabric was knitted under the following conditions. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Knitting machine KARL MAYER Russell knitting machine 56 gauge / 2 inch Tissue Front 20/02/20/24/42/24 Middle 00/44/22/66/22/44 Back 00/20/00 / 20/00/20 Runner length Front 129cm / 480 course Middle 11.8cm / 480 course Back 76cm / 480 course Aircraft course 70 course / inch

The obtained knitted fabric was relaxed in warm water at 90 ° C., pre-set at 190 ° C., dyed at 95 ° C. for 30 minutes, and finished at 170 ° C. to give a C / W of 58/5.
0 elastic warp knitted fabric. When the elasticity of this elastic warp knitted fabric was measured, the elongation under a load of 3.5 N / cm was 108% in warp and 97% in weft, and the elongation under a load of 9.8 N / cm. The degree was 144% of longitude and 135% of latitude. When the body suit was sewn and worn using this knitted fabric, there was no displacement due to movement during wearing, the fit was good, and the detachability was excellent.

Example 8 Nylon 6 33 dtex / 24f was used for the front and middle 1 and polyurethane elastic fiber 390 dtex (trade name: Leica HS type, manufactured by Asahi Kasei Corporation) and 44 dtex.
(Made by Asahi Kasei Corporation, trade name: Leica S type) was placed on the middle 2 and the back, and a Russell knitted fabric was knitted under the following conditions. The elastic yarn was stretched by 100% and warped. [Russell knitting conditions] Knitting machine KARL MAYER Russell knitting machine 56 gauge / 2 inch Tissue A Front 20/02/20/02/20/02 Middle 1 20/02/20/24/42/24 Middle 200 / 22/00/22/00/22 Back 00/44/22/66/22/44 Tissue B Front 42/02/42/02/42/02 Middle 1 20/02/20/24/42/24 Middle 2 00/22/00/22/00/22 back 00/44/22/66/22/44 The above-mentioned tissue A was repeatedly knitted by 1 repeat and tissue B was repeated 19 times. Runner length Front 126cm / 480 course Middle 1 115cm / 480 course Middle 2 10cm / 480 course Back 20cm / 480 course Onboard course 90 course / inch

The obtained knitted fabric was relaxed in warm water at 90 ° C., pre-set at 190 ° C., dyed at 95 ° C. for 30 minutes, and finished at 170 ° C. to give a C / W of 65/50.
50 elastic warp knitted fabrics. When the elasticity of this elastic warp knitted fabric was measured, the elongation under a load of 3.5 N / cm was
138% of longitude, 120% of latitude, and 9.8 N / cm
The elongation under a load was 190% in longitude and 165% in weft. At this time, 5% of the denby structure of the ground structure overlaps with the chain structure of the elongation control yarn.

Example 9 Nylon 6 33 dtex / 24f was used for the front and middle 1 and polyurethane elastic fibers 390 dtex (trade name: Leica HS type, manufactured by Asahi Kasei Corporation) and 44 dtex.
A Russell knitted fabric (available from Asahi Kasei Corporation, trade name: Leica S type) was arranged on the middle 2 and the back, and the structure A described in Example 8 was repeated 6 times and the structure B was repeated 14 times under the following conditions. The elastic yarn was stretched by 100% and warped. Runner length Front 122cm / 480 course Middle 1 115cm / 480 course Middle 2 10cm / 480 course Back 20cm / 480 course On board course 90 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
To set an elastic warp knitted fabric having a C / W of 65/50. When the elastic properties of this elastic warp knitted fabric were measured, the elongation under a load of 3.5 N / cm was 106% in warp,
The weft was 115%, and the elongation under a load of 9.8 N / cm was 155% in longitude and 156% in weft. At this time,
30% of the ground structure denby structure overlaps with the chain structure of the elongation control yarn.

Example 10 Nylon 6 33 dtex / 24f was used for the front and middle 1 and polyurethane elastic fiber 390 dtex (trade name: Leica HS type, manufactured by Asahi Kasei Corporation) and 44 dtex.
A Russell knitted fabric (available from Asahi Kasei Corporation, trade name: Leica S type) was arranged on the middle 2 and the back, and the structure A described in Example 8 was repeated 10 times and the structure B was repeated 10 times at the following conditions. The elastic yarn was stretched by 100% and warped. Runner length Front 118cm / 480 course Middle 1 115cm / 480 course Middle 2 10cm / 480 course Back 20cm / 480 course Onboard course 90 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
To set an elastic warp knitted fabric having a C / W of 65/50. When the elasticity of this elastic warp knitted fabric was measured, the elongation under a load of 3.5 N / cm was 82% in warp and 108% in weft, and the elongation under a load of 9.8 N / cm. The degrees were longitude 122% and latitude 154%. At this time, 50% of the ground structure denby structure overlaps with the chain structure of the elongation control yarn.

Comparative Example 3 Nylon 6 33 dtex / 24f was used for the front and middle 1 and polyurethane elastic fibers (trade name: Leica HS type, manufactured by Asahi Kasei Corporation) 390 dtex and 44 dtex.
A Russell knitted fabric (made by Asahi Kasei Corporation, trade name: Leica S type) was placed on the middle 2 and the back, and only the structure A described in Example 8 was knitted under the following conditions. The elastic yarn is 10
It was stretched by 0% and warped. Runner length Front 110cm / 480 course Middle 1 115cm / 480 course Middle 2 10cm / 480 course Back 20cm / 480 course Aircraft course 90 course / inch Relax the obtained knitted fabric in 90 ° C hot water and 190 ° C.
After pre-setting, dyeing was performed at 95 ° C for 30 minutes,
To set an elastic warp knitted fabric having a C / W of 65/50. When the elasticity of this elastic warp knitted fabric was measured, the elongation under a load of 3.5 N / cm was 63% of warp and 123% of weft, and the elongation under a load of 9.8 N / cm. The degree was 95% of longitude and 170% of latitude. At this time, 100% of the denby structure of the ground structure overlaps with the chain structure of the elongation control yarn.

[0046]

According to the elastic knitted fabric of the present invention, it can be easily attached and detached at any power level from soft to hard.
In addition, it is possible to obtain innerwear and outerwear excellent in exercise followability and wearing feeling.

[Brief description of the drawings]

FIG. 1 is a view showing the stretching characteristics of an elastic knitted fabric obtained in Example 5.

Claims (3)

[Claims] 1. An elastic knitted fabric comprising an elastic yarn and an inelastic yarn, wherein the elastic knitted fabric has an elongation in the warp and weft directions of 80 to 80 under a load of 3.5 N / cm. An elastic knitted fabric characterized by being 150% and 100 to 200% under a load of 9.8 N / cm. 2. When the elastic knitted fabric is constrained in one of the warp and weft directions and is stretched to 3.5 N / cm in the other direction, even if the warp and weft directions are stretched, Stress applied to the knitted fabric in the restrained direction is 0 to 1.0 N
The elastic knitted fabric according to claim 1, which is in the range of / cm. 3. The elastic knitted fabric according to claim 1, wherein the inelastic yarn is a polytrimethylene terephthalate fiber.