JP2003342860A - Cotton crepe-like warp knit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cotton crepe-like warp knit having regular and fine crepes in the width direction, and regular rugged patterns of the cotton crepe. <P>SOLUTION: The cotton crepe-like warp knit is a warp knit having inserted weft yarns. The weft yarn is a latent crimp-manifesting polyester fiber composed of two or more kinds of polyester components one of which is a trimethylene terephthalate. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a Yangyanagi-like warp knitted fabric.

[0002]

2. Description of the Related Art Conventionally, as a Yangyanagi-like warp knitted fabric, a warp knitted fabric in which a covered elastic yarn in which elastic fibers such as polyurethane are coated with inelastic fibers is inserted as a weft is known. It is also irregular, and the irregular pattern of Yangyanagi is also irregular, and it has a regular and delicate Yangyanagi in the width direction, which is a market need these days, and the irregular pattern of Yangyanagi is also irregular. It did not meet the requirements for regular Yangyanu warp knitted fabrics.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a Yangyanagi-like warp knitted fabric having a regular and fine toothpick willow in the width direction and a regular pattern of the toothpick willow.

[0004]

Means for Solving the Problems As a result of diligent study on the raw yarns, the knitting structure and the like constituting the warp knitted fabric, the present inventors have found that
The inventors have found that the object of the present invention can be achieved by inserting a specific fiber as a weft, and have completed the present invention. That is, the present invention is a warp knitted fabric in which wefts are inserted, wherein the wefts are composed of two or more polyester components, one component of which is a latent crimp-expressing polyester fiber, which is polytrimethylene terephthalate. It is a Yangyanagi-like warp knitted fabric. The Yangyanagi-like warp knitted fabric of the present invention has a stretch ratio in the weft direction of 50% or more, preferably 70% or more, particularly 80% or more, and 250% or less, preferably 200 under a load of 3.5 N / cm. It has a stretch ratio of not more than%.

The present invention will be described in detail below. The present invention is characterized in that the weft yarn to be inserted into the warp knitted fabric is a latent crimp-developing polyester fiber, and at least one component thereof is polytrimethylene terephthalate. Specifically, there is one containing polytrimethylene terephthalate as one component as disclosed in JP 2001-40537 A. That is, it is a composite fiber in which two types of polyester polymers are joined in a side-by-side type or an eccentric sheath-core type, and in the case of the side-by-side type, the melt viscosity ratio of the two types of polyester polymers is preferably 1.00 to 2.00, In the case of the eccentric sheath-core type, it is preferable that the sheath polymer and the core polymer have an alkali reduction rate ratio of 3 times or more and the sheath polymer is faster.

Specific combinations of polymers include
Polyesters containing terephthalic acid as a main dicarboxylic acid and 1,3-propanediol as a main glycol component, such as glycols such as ethylene glycol and butanediol, and dicarboxylic acids such as isophthalic acid and 2,6-naphthalenedicarboxylic acid. Polytrimethylene terephthalate, which may be copolymerized or may contain additives such as other polymers, matting agents, flame retardants, antistatic agents and pigments, and terephthalic acid as the main dicarboxylic acid, ethylene glycol Is a polyester containing as a main glycol component, glycols such as butanediol and dicarboxylic acids such as isophthalic acid and 2,6-naphthalenedicarboxylic acid may be copolymerized, and other polymers, matting agents, hardeners Polyethylene terephthalate which may contain additives such as flame retardants, antistatic agents and pigments DOO, and a polytrimethylene terephthalate and terephthalic acid as the main dicarboxylic acid,
A polyester containing 1,4-butanediol as a main glycol component, which may be copolymerized with glycols such as ethylene glycol and dicarboxylic acids such as isophthalic acid and 2,6-naphthalenedicarboxylic acid, and other polymers. , Polybutylene terephthalate which may contain an additive such as a matting agent, a flame retardant, an antistatic agent and a pigment are preferable, and polytrimethylene terephthalate is particularly preferably arranged inside the crimp.

As described above, according to the present invention, at least one of the polyester components constituting the latent crimp-developing polyester fiber is polytrimethylene terephthalate. 43-19108, JP-A-11-18992.
No. 3, JP 2000-239927, and JP 2
000-256918, JP 2000-3283.
No. 82, JP 2001-81640 A, etc., the first component is polytrimethylene terephthalate and the second component is polyester such as polytrimethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate in parallel or eccentric. The composite spinning is disclosed in the side-by-side type or the eccentric sheath-core type arranged in. Particularly, a combination of polytrimethylene terephthalate and copolymerized polytrimethylene terephthalate, or a combination of two kinds of polytrimethylene terephthalate having different intrinsic viscosities is preferable.

Further, in order to achieve the object of the present invention, the latent crimp-expressing polyester fiber preferably has an initial tensile resistance of 10 to 30 cN / dtex, and particularly preferably 20.
~ 30 cN / dtex, 20-27 cN / dte
x is good. If it exceeds 30 cN / dtex, it is difficult to obtain a soft texture, and if it is less than 10 cN / dtex, it is difficult to manufacture. The expansion and contraction rate of the actual crimp is 10 to 100%.
Is preferable, 10 to 80% is more preferable, and 10 to 60% is more preferable. If it is less than 10%, achievement of the object of the present invention tends to be insufficient, and if it exceeds 100%, it is difficult to manufacture.
Further, the expansion / contraction elastic modulus of the actual crimp is preferably 80 to 100%, particularly 85 to 100%, and more preferably 8.
5 to 97%. If it is less than 80%, achievement of the object of the present invention tends to be insufficient, and if it exceeds 100%, it is difficult to manufacture.

Further, the heat shrinkage stress at 100 ° C. is 0.
It is preferably 1 to 0.5 cN / dtex, particularly 0.1 to 0.4 cN / dtex, and further 0.1 to 0.3 c.
It is preferably N / dtex. 0.1 cN / dt
If it is less than ex, achievement of the object of the present invention tends to be insufficient,
If it exceeds 0.5 cN / dtex, it is difficult to manufacture. The stretch elongation after hot water treatment is preferably 100 to 250%, more preferably 150 to 250%, and especially 180.
~ 250%. If it is less than 100%, the object of the present invention tends to be insufficient, and if it exceeds 250%, it is difficult to manufacture. The elastic modulus after hot water treatment is preferably 90 to 100%, more preferably 95 to 100%. If it is less than 90%, the achievement of the object of the present invention tends to be insufficient, and if it exceeds 100%, the production is difficult.

Examples of the latent crimp-developing polyester fiber having such characteristics include a composite fiber composed of a single yarn in which two kinds of polytrimethylene terephthalate having different intrinsic viscosities are composited side-by-side with each other. The difference in intrinsic viscosity between the two types of polytrimethylene terephthalate is preferably 0.05 to 0.4 (dl / g), particularly 0.1 to 0.35 (dl / g), and further 0.15 to 0.35 (dl / g) is preferable. For example, when the intrinsic viscosity on the high viscosity side is selected from 0.7 to 1.3 (dl / g), the intrinsic viscosity on the low viscosity side is 0.5 to 1.1 (d
It is preferably selected from 1 / g). The intrinsic viscosity on the low viscosity side is preferably 0.8 (dl / g) or more, particularly 0.85 to 1.0 (dl / g), and further 0.9 to 1.0.
(Dl / g) is preferable.

The intrinsic viscosity of the composite fiber itself, that is, the average intrinsic viscosity is preferably 0.7 to 1.2 (dl / g),
0.8 to 1.2 (dl / g) is more preferable, and especially 0.
85 to 1.15 (dl / g) is preferable, and further, 0.
It is preferably 9 to 1.1 (dl / g). The value of the intrinsic viscosity in the present invention refers to the viscosity of the spun yarn, not the polymer used. The reason for this is that, as a drawback peculiar to polytrimethylene terephthalate, thermal decomposition is more likely to occur as compared with polyethylene terephthalate, and even if a polymer having a high intrinsic viscosity is used, the intrinsic viscosity is significantly reduced by thermal decomposition.
This is because it is difficult to maintain a large difference in intrinsic viscosity between the composite multifilaments.

The polytrimethylene terephthalate is a polyester having a trimethylene terephthalate unit as a main repeating unit. The trimethylene terephthalate unit is about 50 mol% or more, preferably 70 mol% or more, and further 80 mol%. Or more, more preferably 9
It means 0 mol% or more. Therefore, the total amount of the other acid component and / or glycol component as the third component is about 50.
Mol% or less, preferably 30 mol% or less, and further 20
It includes polytrimethylene terephthalate contained in an amount of not more than mol%, more preferably not more than 10 mol%.

Polytrimethylene terephthalate is prepared by combining terephthalic acid or its functional derivative with trimethylene glycol or its functional derivative in the presence of a catalyst under suitable reaction conditions. In this production process, one or more appropriate third components may be added to obtain a copolyester, or
Polyesters other than polytrimethylene terephthalate such as polyethylene terephthalate and polybutylene terephthalate, nylon and polytrimethylene terephthalate may be separately produced and then blended. The content of polytrimethylene terephthalate at the time of blending is 50% or more by mass%.

As the third component to be added, aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexanedicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.) ), Aliphatic glycols (ethylene glycol, 1, 2
-Propylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexanedimethanol, etc.), aliphatic glycols containing aromatics (1,4-bis (β-hydroxyethoxy) benzene, etc.), polyether glycols (polyethylene glycol) , Polypropylene glycol and the like), aliphatic oxycarboxylic acid (ω-oxycaproic acid and the like), aromatic oxycarboxylic acid (p-oxybenzoic acid and the like) and the like. Further, a compound having one or three or more ester-forming functional groups (benzoic acid or the like or glycerin or the like) can also be used within a range in which 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, slip agents such as aerosil, and anti-hindering agents such as hindered phenol derivatives. An oxidizing agent, a flame retardant, an antistatic agent, a pigment, a fluorescent whitening agent, an infrared absorbing agent, an antifoaming agent, etc. may be contained. In the present invention, the spinning of latent crimp-developing polyester fibers is disclosed in the above-mentioned various Japanese Unexamined Patent Publications, for example, 2 to 3.5 after obtaining an undrawn yarn at a winding speed of 3000 m / min or less. A method of drawing and twisting about twice is preferable, but even if a direct drawing method (spin draw method) in which a spinning-drawing and twisting step is directly connected, or a high speed spinning method (spin take-up method) with a winding speed of 5000 m / min or more is adopted. good.

The fibers may be in the form of long fibers or short fibers, or may be uniform or thick in the length direction, and their cross-sectional shapes are round, triangular, L-shaped or T-shaped. , Y
Type, W type, Yachiyo type, flat type (having a flatness of about 1.3 to 4 and includes W type, I type, Bou-Melan type, corrugated type, skewer dumpling type, eyebrow type, rectangular parallelepiped type and the like. ), A polygonal type such as a dogbone type, a multi-leaf type, a hollow type or an irregular type. Further, in the present invention, when the latent crimp-expressing polyester fiber is a false twist textured yarn, a Yangyanagi-like warp knitted fabric further excellent in stretchability can be obtained.

As a characteristic of the false twisted yarn preferable for obtaining excellent stretchability, the actual crimp elongation is preferably 70 to 300%, particularly 100 to 300%, and further 120.
~ 300% is good. Also, the apparent crimp modulus is preferably 80 to 100%, particularly 82 to 100%, and further 85 to 1
00% is good, and the crimp elongation of this false twisted yarn is 1
It is preferably from 00 to 400%, more preferably from 120 to 400%. Crimp elastic modulus is 80-100%
Is preferred, and more preferably 90-100%
Is. The false twisting method for obtaining the false twisted yarn includes pin type, friction type, nip belt type,
Although any method such as an air twisting type may be used, a pin type or a nip belt type is preferable. As the false twisted textured yarn, it is preferable to use a so-called 1-heater false twisted textured yarn (non-set type) rather than a so-called 2-heater false twisted textured yarn (set type). .

The heat setting temperature during false twisting is 150 ° C to 20 ° C.
It is preferable to set the temperature in the range of 0 ° C., and the false twist number (T1) is calculated by the following equation when the value of the coefficient of false twist K1 is 21000 to 3
It is preferably 3000, more preferably 250
The range is from 00 to 32000. T1 (T / m) = K1 / (Fineness of original yarn: dtex) ^{1/2 The} false twisted yarn may be untwisted, but may be twisted in the same direction as the false twisting direction or in a different direction as necessary. The false twist textured yarn may be used as a double twist or a triple twist or more, and the twist number (T2) in the additional twist and the false twist is calculated by the following equation.
2) may be selected within a range of 20000 or less. The total fineness of the false twist textured yarns means the total fineness of the false twist textured yarns to be additionally twisted or plied. T2 (T / m) = K2 / (total fineness of false twisted yarn: dt
ex) ^1/2

In the present invention, the latent crimp-expressing polyester fiber may be used alone, but if necessary, the latent crimp-expressing polyester fiber content is 1% by mass.
It may be used as a composite in the range of 0% or more, preferably 15% or more. For example, spun-core structured spun yarn or twisted yarn using latent crimp-expressing polyester fiber or false twisted yarn thereof as a core yarn, There are conventionally known composite forms such as mixed fiber and composite false twist, and the fibers to be combined may be bulky yarn, short fiber, multifilament raw yarn, false twisted yarn, bulky processed yarn represented by fluid injection processed yarn. Conventionally known various types of yarns can be used.

For example, natural fibers such as wool, silk, cotton and hemp,
Cupro, viscose, polynosic, cellulosic fibers such as purified cellulose fibers, acetate fibers, polyester fibers such as polyethylene terephthalate fibers and polybutylene terephthalate fibers, polytrimethylene terephthalate fibers, nylon fibers, various artificial fibers such as acrylic fibers, Furthermore, these copolymer type fibers and composite fibers using the same or different polymers (side-by-side type, eccentric sheath core type, etc.) can be mixed by known means, for example, long-short mixed spinning (silofil, hollow spindle, etc.), covering. (Single or double), a low shrinkage yarn having a boiling water shrinkage of about 3 to 10% or a high shrinkage yarn having a boiling water shrinkage of about 15 to 30% may be mixed or twisted to form a composite.

In the present invention, the latent crimp-developing polyester fiber is inserted as a weft into a warp knitted fabric. The weft to be inserted is at least 10% or more,
In particular, 20% or more, and further 30% or more are preferably latent crimp-expressing polyester fibers for achieving the object of the present invention, and optimally 50 to 100%. As the weft yarn including the latent crimp developable polyester fiber, a pre-dyed yarn or a raw colored yarn may be used. The weft yarn is inserted between the needle loop and the sinker loop of the ground yarn knitted with a structure such as chain knitting or denbi knitting so as to extend over the entire width of the warp knitted fabric. or,
As the insertion method, weft insertion can be performed using a warp knitting machine (single or double tricot knitting machine or Russell knitting machine) equipped with a weft insertion device. In the case of a double warp knitting machine, the weft insertion may be performed on one of the front and back knitted fabrics or on both the front and back knitted fabrics.

In the present invention, as the fiber forming the warp knitted fabric into which the weft is inserted, that is, the fiber forming the ground structure, any fiber can be used. For example, it is compounded with a latent crimp-expressing polyester fiber. Examples of good fibers and fiber forms include those exemplified. Knitting machine gauge is 9
~ 36 gauge is preferably used. The warp knitted fabric may have a flat texture on the surface to give a good touch,
A knitted fabric having a plurality of openings, such as a square or hexagonal mesh knitted fabric or a marquisette knitted fabric, may be knitted to impart design characteristics. In the case of a double warp knitting machine, the knitted fabrics on the front and back sides may have different knitting structures. The dyeing and finishing of the warp knitted fabric may be carried out according to a conventional method. For example, a knitted raw fabric is dyed and finished, but if necessary, scouring relaxation and presetting may be performed before dyeing. . or,
The alkali weight loss may be carried out at a weight loss rate of about 5 to 20% as required. Further, for example, emery paper, brush, needle cloth, or the like may be applied with naps, and various finishing processes such as printing and embossing may be performed.
Further, finishing agents such as softening agents, water repellents, antistatic agents, etc. may be used.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited to these Examples. The evaluation method used in the present invention is as follows. (1) Intrinsic viscosity Intrinsic viscosity [η] (dl / g) is a value calculated based on the following equation. [Η] = lim (ηr-1) / C C → 0 In the formula, ηr is 35 ° C. of a diluted solution of polytrimethylene terephthalate yarn or polyethylene terephthalate yarn dissolved in an o-chlorophenol solvent having a purity of 98% or more. Is a value obtained by dividing the viscosity of the above by the viscosity of the above solvent measured at the same temperature, and is defined as the relative viscosity. C is
Polymer concentration expressed in g / 100 ml. In addition,
Since it is difficult to measure the intrinsic viscosities of the composite multifilaments using polymers with different intrinsic viscosities, it is difficult to measure the respective intrinsic viscosities of the multifilaments. The intrinsic viscosity measured by spinning the obtained yarn is taken as the intrinsic viscosity constituting the composite multifilament.

(2) Initial tensile resistance: JIS-L-10
13: 0.088 per unit fineness of the sample according to the chemical fiber filament yarn test method and the initial tensile resistance test method
A tensile test was performed by applying an initial load of 2 cN / dtex, and from the obtained load-elongation curve, the initial tensile resistance (cN / dt
ex) was calculated and the average value of 10 times was calculated. (3) Expansion / contraction elongation and expansion / contraction elastic modulus: JIS-L-109
0: Synthetic fiber filament Bulked yarn Test method, elasticity test method, measurement according to method A, expansion / contraction elongation rate (%) and expansion / contraction elastic modulus (%) were calculated, and an average value of 10 times was calculated. It was The expansion and contraction elongation ratio and expansion and contraction elastic modulus of the actual crimp were measured at a temperature of 20 ± 2 ° C. for the sample unwound from the winding package.
The measurement was performed after standing for 24 hours in an environment of humidity 65 ± 2%. The expansion / contraction elastic modulus and elastic modulus after hot water treatment are 2 without load after being immersed in 98 ° C. hot water for 30 minutes without load.
A sample that was naturally dried for 4 hours was used.

(4) Thermal shrinkage stress: Using a thermal stress measuring device (Kanebo Engineering Co., Ltd .; trade name KE-2),
Cut the sample to a length of 20 cm, connect both ends to form a ring, and load it into the measuring device. Initial load is 0.044 cN / dte.
x, the shrinkage stress is measured under the condition that the heating rate is 100 ° C./min,
100 from the change curve of the heat shrinkage stress with respect to the obtained temperature
Read the heat shrinkage stress at ° C. (5) Actual crimp expansion rate and apparent crimp elastic modulus of false twisted yarn Using a tensile tester manufactured by Shimadzu Corporation, the false twisted yarn has an initial load of 0.9 × 10 at a gripping interval of 10 cm. ^-3 cN /
After attaching with dtex, pulling speed 10cm / min
And the elongation (%) when the stress reached 0.0882 cN / dtex was defined as the apparent crimp elongation rate. After that, the material is contracted again at the same speed to a gripping interval of 10 cm, a stress-strain curve is drawn again, and the elongation until the stress of the initial load is expressed is the residual elongation (B). The apparent crimp modulus was determined by the following formula. Remarkable crimp elastic modulus = [(10-B) / 10] x 100
(%)

(6) Crimp elongation rate and crimp elastic modulus of false twisted yarn The false twisted yarn unwound from the winding package is dipped in hot water at 98 ° C for 20 minutes under no load, and 2 under load
Except that a sample dried for 4 hours was used, the measurement was carried out in the same manner as the measurement of the actual crimp elongation and the actual crimp elastic modulus, and the respective values were taken as the crimp extension ratio and the crimp elastic modulus. (7) Stretch rate The sample was cut into 140 mm x 165 mm (pulling side x restraining side), and a uniaxial fixed biaxial extension tester (STRIP BIAX was used.
IAL TENSILE TESTER KES-G2
-SB1, manufactured by Kato Tech Co., Ltd.). At this time, the effective dimension of the sample to which stress is applied is 100 mm × 100
mm. Effective sample length for converting elongation is 11.5 cm
Is. Stretch rate is 300 mm in the weft direction
A constant load extension was performed to 3.5 N / cm per minute, the elongation (%) was read, and the average value of N = 2 was calculated.

<Production of latent crimp-expressing polyester fiber> Side-by-side composite multifilaments having different intrinsic viscosities were produced by the following Production Examples 1 to 4. {Production Example 1} Two kinds of polytrimethylene terephthalate having different intrinsic viscosities are extruded in a side-by-side type at a ratio of 1: 1 to obtain an undrawn yarn at a spinning temperature of 265 ° C and a spinning speed of 1500 m / min, and then a hot roll temperature of 55 ° C. The hot plate temperature was 140 ° C., the drawing speed was 400 m / min, the draw ratio was set so that the fineness after drawing was 56 dtex, and the fibers were twisted to obtain a 56 dtex / 12 f side-by-side composite multifilament. The intrinsic viscosity of the obtained composite multifilament was [η] = 0.90 on the high viscosity side and [η] = 0.70 on the low viscosity side. Initial tensile resistance,
Table 1 shows the expansion / contraction elastic modulus / expansion / contraction elastic modulus of the actual crimp, the expansion / contraction elastic modulus / expansion / contraction elastic modulus after hot water treatment, and the thermal contraction stress at 100 ° C.

{Production Example 2} A side-by-side type composite multifilament of 84 dtex / 12f was obtained in the same manner as in Production Example 1 above. The intrinsic viscosity of the obtained composite multifilament was [η] = 0.88 on the high viscosity side and [η] = 0.70 on the low viscosity side. Initial tensile resistance, expansion / contraction expansion ratio of actual crimp / expansion / contraction elastic modulus, expansion / contraction expansion ratio after hot water treatment /
Table 1 shows the elastic modulus and the heat shrinkage stress at 100 ° C.

{Production Example 3} Two kinds of polytrimethylene terephthalate having different intrinsic viscosities from those of Production Example 1 were used, and 56 dtex / 12f was produced in the same manner as in Production Example 1 above.
A side-by-side type composite multifilament was obtained.
The intrinsic viscosity of the obtained composite multifilament was [η] = 0.86 on the high viscosity side and [η] = 0.69 on the low viscosity side. Initial tensile resistance, expansion / contraction elastic modulus of visible crimp / expansion / contraction elastic modulus, expansion / contraction elastic modulus / contraction elastic modulus after hot water treatment, 100 ° C
Table 1 shows the heat shrinkage stress of the above.

{Production Example 4} 56 dtex / 12 was prepared by using two kinds of polyethylene terephthalate having different intrinsic viscosities.
A side-by-side type composite multifilament of f was obtained. The intrinsic viscosity of the obtained composite multifilament is [η] = 0.66 on the high viscosity side and [η] = 0.50 on the low viscosity side.
Met. Initial tensile resistance, expansion / contraction elastic modulus / expansion / contraction elastic modulus of actual crimp, expansion / contraction elastic modulus / contraction elastic modulus after hot water treatment, 10
Table 1 shows the heat shrinkage stress at 0 ° C.

The physical properties of the above fibers are shown in Table 1.

[Table 1]

[0032]

[Examples 1 to 3 and Comparative Example 1] A 24-gauge weft insertion Russell knitting machine manufactured by KARL MAYER was used to arrange a polyethylene terephthalate fiber 56dtex / 24f in a full set on the back reed. Knitting was performed and the composite filaments obtained in each of the above production examples were used as wefts and inserted into each course in the full width. The on-board course was set to 65 courses / 2.54 cm, and the runner length was 83 cm. The organized fabric is 130 ° C with a circular dyeing machine
It was dyed for 30 minutes and set at 150 ° C. for 40 seconds to finish. The finished knitted fabric has 64 courses /
The weight was 2.54 cm, the well was 54 wells / 2.54 cm, and the basis weight was 151 g / m ² . Examples 1 to 3 (Production Example 1)
(Corresponding to ~ 3), the Yangyanagi-like warp knitted fabric has a stretch ratio of 103 to 110% in the weft direction, has regular and fine Yangyanagi in the width direction, and has a concave and convex pattern of Yangyanagi. Was also regular, but Comparative Example 1 (corresponding to Production Example 4)
The Yangyanagi-like warp knitted fabric obtained in No. 1 had a stretch ratio in the weft direction of about 50%, but did not have the Yangyanagi tone and only partially wrinkled on the surface of the knitted fabric.

[0033]

Comparative Example 2 Polyethylene terephthalate fiber 17dt
While ex / 5f is used as a covering yarn, polyurethane covering elastic fiber (made by Asahi Kasei Co., Ltd., trade name; Leuka) 22dtex / 3f is stretched 3.2 times, while double covering yarn (twisted Z
A direction of 2400 T / m and an upper twist S direction of 2200 T / m) were prepared. The Yangyanagi-like warp knitted fabric produced in the same manner as in Example 1 except that this covering yarn was used as the weft had a stretch ratio in the weft direction of 100%, but had irregular and coarse Yangyanagi in the width direction. However, the irregular pattern of the Yangyanagi was also an irregular Yangyan warp knitted fabric.

[0034]

[Example 4] Using the composite filament yarn obtained in Production Example 1, a first heater temperature of 170 ° C, a twist direction of Z twist, and a false twist number of 3200 T / m were used for false twisting with IVF-338 manufactured by Ishikawa Seisakusho. I went. The obtained false twisted yarn has an actual crimp elongation of 190%, an actual crimp elastic modulus of 90%, and a crimp elongation of 25.
It was 0% and the crimp elastic modulus was 93%. The Yangyanagi tone warp knitted fabric produced in the same manner as in Example 1 except that the obtained false twisted yarn was used as the weft, had a weft direction stretch ratio of 155%,
It had a regular and fine Yangyanagi in the width direction, and the irregular pattern of the Yangyanagi was also a regular Yangyan warp knitted fabric.

[0035]

Industrial Applicability According to the present invention, it is possible to provide a Yangyanagi-like warp knitted fabric having a regular and delicate Yangyanagi in the width direction and having a regular pattern of the Yangyanagi.

Continued front page    F-term (reference) 4L002 AA07 AB02 AB04 AB05 AC01                       AC02 CA01 CA02 CA03 CA04                       CB01 DA04 EA06 EA08 FA01

Claims (4)

[Claims] 1. A warp knitted fabric having a weft inserted therein, wherein the weft is composed of two or more polyester components, one component of which is a latent crimp-expressing polyester fiber, which is polytrimethylene terephthalate. Yangyanagi-like warp knitted fabric. 2. The Yangyanagi-like warp knitted fabric according to claim 1, wherein the latent crimp-developing polyester fiber is a false twist textured yarn. 3. The Yangyanagi-like warp knitted fabric according to claim 2, wherein the apparent crimp elongation of the false twisted yarn is 70% or more. 4. The latent crimp-developing polyester fiber satisfies the following (a) to (c).
The Yangyanagi tone warp knitted fabric according to any one of 3 above. (A) The initial tensile resistance is 10 to 30 cN / dtex (b) The expansion and contraction elongation ratio of the actual crimp is 10 to 100%, and the expansion and contraction elastic modulus is 80 to 100% (c) The heat contraction stress at 100 ° C. is 0. 1-0.5 cN /
dtex