JPH07118987A - New light-weight woven or knit fabric - Google Patents

Abstract

PURPOSE:To provide a new light-weight woven or knit fabric having unprecedented good crispness and toughness in addition to the feeling and light-weight similar to those of natural fiber. CONSTITUTION:A combined filament yarn produced by blending a hollow monofilament yarn A having a hollowness of >=10% and a fineness of 8-70 de with a multifilament yarn B having a single filament fineness of <=3 de is used as at least a part of the objective new woven or knit fabric.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel lightweight woven and knitted fabric which is lightweight and firm and elastic.

[0002]

2. Description of the Related Art A woven or knitted fabric having a natural fiber-like texture and a lightweight feeling using a composite mixed yarn in which hollow multifilament yarn and non-hollow multifilament yarn are mixed is disclosed in, for example, Japanese Patent Publication No. 61-60189. It has been proposed in many publications such as JP-B-63-12189 and is used for clothing. However, a woven or knitted fabric using a composite mixed yarn in which conventional hollow multifilament yarn and non-hollow multifilament yarn are mixed has a drawback that it lacks elasticity and elasticity, although it has a natural fiber-like texture and a lightweight feeling. Yes, it was not always satisfactory.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above problems and provides a novel lightweight woven / knitted fabric having a natural fiber-like texture and a lightweight feeling, and a good elasticity and elasticity which have never been obtained. It is a technical issue to provide.

[0004]

Means for Solving the Problems That is, the present invention provides a hollow monofilament yarn A having a hollowness of 10% or more and a fineness of 8 to 70 denier and a multifilament yarn B having a fineness of single filament of 3 denier or less. The gist of the present invention is a novel lightweight woven or knitted fabric characterized in that at least a part thereof is composed of mixed composite mixed yarns.

The hollow ratio is a value calculated by the following formula. Hollow ratio (%) = [B / (A + B)] × 100 where A: cross-sectional area of non-hollow part B: cross-sectional area of hollow part

The present invention will be described in detail below. The novel lightweight woven or knitted fabric of the present invention has a hollow ratio of 10% or more and a fineness of 8 to 8.
A composite mixed yarn in which a hollow monofilament yarn A of 70 denier and a multifilament yarn B having a fineness of a single filament of 3 denier or less are mixed at least partially constitutes a woven fabric. In the case of No. 1, it is used for either warp or weft, or for both warp and weft.

In the present invention, in order to give a woven and knitted fabric a good elasticity and elasticity which have not been obtained conventionally, the yarn A constituting one of the composite mixed yarns has a hollow ratio of 10%.
As mentioned above, it is necessary that the hollow monofilament has a fineness of 8 to 70 denier. When the hollow ratio is less than 10%, the feeling of lightness is reduced, and at the same time, the rugged feel peculiar to the monofilament yarn is increased, and the texture of the woven or knitted fabric as a whole becomes hard, so that a satisfactory product cannot be obtained.

That is, the use of hollow monofilament yarns not only gives a lightweight feeling but also reduces the rugged feel peculiar to the monofilament yarns, and imparts appropriate softness and good elasticity to the woven or knitted fabric. This is because.

If the fineness of the yarn A exceeds 70 denier, the texture of the woven or knitted fabric becomes hard, which is not preferable for clothing. Further, if the fineness is less than 8 denier, good firmness and elasticity cannot be obtained, which is unsuitable.

The material of the yarn A is preferably polyester such as polyethylene terephthalate or polyamide such as nylon 6 or nylon 66. Further, as shown in FIG. 1, the cross section of the entire yarn A and the hollow portion may be circular or atypical cross section, and the number of hollow portions in the cross section is not limited to one and may be plural.

Next, in order to impart a soft texture to the woven or knitted fabric, the yarn B, which constitutes the composite mixed yarn with the yarn A, has a single filament fineness of 3 denier or less, preferably 0.15 to 2 denier. It is necessary to use filament yarn, and as long as the fineness of the single filament is 3 denier or less, a mixture of single filaments of two or more types of fineness may be used. When the fineness of the single filament exceeds 3 denier, the texture becomes hard and a satisfactory product cannot be obtained. The fineness of the yarn B is not particularly limited, but is 50 to 300
Denier is preferred.

Further, the yarn B may be a mixed filament yarn of different fineness, a multifilament raw yarn such as a different shrinkage mixed yarn, a processed yarn, or a mixture of a natural yarn and a processed yarn. .

The material of the thread B is preferably polyester such as polyethylene terephthalate, 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate, or polyamide such as nylon 6 or nylon 66.

The mixed fiber form of the yarn A and the yarn B preferably has a core-sheath structure in which the yarn A, which is a hollow monofilament yarn, is the core and the multifilament yarn is the sheath. In that case, the core yarn and the sheath yarn may be optionally processed, such as a yarn length difference or air treatment to give entanglement. Alternatively, the fibers may be mixed in the aligned state and then subjected to additional twisting and ply twisting.

[0015]

[Function] The woven or knitted fabric of the present invention has a hollow ratio of 10% or more and a fineness of 8 to 8.
80 denier hollow monofilament yarn A gives moderate elasticity and lightness, and by combining yarn A and multifilament yarn B having a monofilament fineness of 3 denier or less, it is conventionally obtained. It is possible to give a soft texture like natural fiber and good elasticity and elasticity at the same time.

[0016]

EXAMPLES Next, the present invention will be specifically described by way of examples. The intrinsic viscosity was measured at a temperature of 20 ° C using an equal weight mixed solvent of phenol and ethane tetrachloride.

Examples 1-2 and Comparative Example 1 Polyethylene terephthalate having an intrinsic viscosity of 0.69 was spun at a spinning temperature.
At 302 ℃, spinning speed 1200m / min, draw ratio 3.60,
Three types of hollow monofilament yarns shown in Table 2 which have different cross-sectional shapes shown in Fig. 1 (a), have the same outer diameter and different hollowness, are melt-spun with different nozzle shapes and discharge amounts, and then drawn. Got the article.

The hollow monofilament yarn obtained above and a 75d / 48f polyethylene terephthalate multifilament yarn were subjected to an air entanglement treatment under the conditions shown in Table 1 to obtain a composite mixed fiber yarn having an entanglement number of 60 / m. Got

[0019]

[Table 1]

This yarn is subjected to additional twisting of 300 times / m, and the obtained yarn is used as warp and weft to obtain a warp density of 120 / 2.5
A 2/2 diagonal weave fabric was woven with a 4 cm weft density of 95 yarns / 2.54 cm, and then dyed and finished by a conventional method to obtain a woven fabric. Table 2 shows the sensory test results of the obtained woven fabric.

[0021]

[Table 2]

As is clear from Table 2, in Examples 1 and 2, woven fabrics having a lightweight feeling, good elasticity and soft texture, and a soft texture were obtained. On the other hand, Comparative Example 1 in which the hollow ratio of the yarn A is small
The woven fabrics were inferior in light weight.

Comparative Example 2 A woven fabric was obtained by processing in the same manner as in Example 1 except that a 75d / 18 multifilament yarn was used as the yarn B which constitutes the composite mixed yarn to be the weft. As a result of a sensory test of the obtained fabric, the feeling of lightness and firmness and elasticity were excellent, but the feeling of softness was poor and the texture was unsatisfactory.

Example 3, Comparative Examples 3 to 4 Polyethylene terephthalate having an intrinsic viscosity of 0.69 was spun at a spinning temperature.
At 302 ℃, spinning speed 1200m / min, draw ratio 3.60,
The nozzle shape and discharge rate were changed, melt spinning was performed, and then drawing was performed to have the cross-sectional shape shown in Fig. 1 (a) and the hollow ratio was 10%.
Thus, hollow monofilament yarns having a fineness of 70 denier (Example 3) and 80 denier (Comparative Example 3) were obtained.

Further, using the same polyethylene terephthalate as described above, melt spinning was performed under the conditions of a spinning temperature of 298 ° C., a spinning speed of 1075 m / min, and a draw ratio of 3.02.
A hollow multifilament yarn (Comparative Example 4) having a cross-sectional shape shown in (a) and having a hollowness of 25% and a hollowness of 75d / 36f was obtained.

The hollow monofilament yarns and hollow multifilament yarns obtained above and 75d / 48f polyethylene terephthalate multifilament yarns were subjected to an air entanglement treatment under the same conditions as in Example 1 to obtain 60 entanglements / m composite mixed yarn was obtained.

These yarns are additionally twisted 200 times / m,
Using the obtained yarn for warp and weft, the warp density is 102
A 2/2 diagonal weave fabric was woven at a density of /2.54 cm and a weft density of 80 threads / 2.54 cm, and then dyed and finished in a conventional manner to obtain a woven fabric. Table 3 shows the sensory test results of the obtained woven fabric.

[0028]

[Table 3]

As is clear from Table 3, in the third embodiment,
A woven fabric with a lightweight feel, good elasticity and soft texture was obtained. On the other hand, the woven fabric of Comparative Example 3 in which the fineness of the yarn A was large had a poor soft feeling. Further, as the yarn A, the yarn fineness was more than 70 denier, but the woven fabric of Comparative Example 4 using the hollow multifilament yarn composed of 36 filaments had no firmness and elasticity.

Example 4 50d / 100f as a yarn B constituting a composite mixed yarn which is a weft
A woven fabric was obtained by processing in the same manner as in Example 3 except that a mixed fiber of different fineness obtained by mixing the multifilament yarn of No. 3 and the multifilament yarn of 30d / 12f was used. As a result of a sensory test of the obtained woven fabric, all of lightness, firmness and softness, and softness were all very good.

Example 5, Comparative Example 5 Polyethylene terephthalate having an intrinsic viscosity of 0.69 was spinning temperature.
At 302 ℃, spinning speed 1200m / min, draw ratio 3.60,
The nozzle shape and discharge rate were changed, melt spinning was performed, and then stretched to have the cross-sectional shape shown in Fig. 1 (a), and the hollow ratio was 50%.
Thus, a hollow monofilament yarn having a fineness of 20 denier (Example 5) and a hollow monofilament yarn having a hollowness of 5% and a fineness of 38 denier (Comparative Example 5) were obtained.

The hollow monofilament yarn obtained above and a polyethylene terephthalate multifilament yarn of 50d / 48f were subjected to an air entanglement treatment under the same conditions as in Example 1 to obtain a composite mixed fiber of 60 entangles / m. I got a thread.

These yarns are additionally twisted 100 times / m,
Using the obtained yarn, a knitting fabric having an interlock structure is knitted using a circular knitting machine having a knitting needle density of 32 gauge, and then,
A knitted fabric was obtained by dyeing and finishing in the usual way. As a result of a sensory test on the obtained knitted fabric, the fabric of Example 5 was very good in lightness, elasticity and softness. On the other hand, the knitted fabric of Comparative Example 5 in which the hollow ratio of the yarn A was small had good elasticity and softness, but was inferior in lightness.

[0034]

The woven or knitted fabric of the present invention is a lightweight fabric having a novel texture having both good elasticity and soft texture which cannot be obtained by the conventional woven and knitted fabric using synthetic fibers.
It has excellent commercial value.

[Brief description of drawings]

1 (a), (b) and (c) are hollow monofilament yarns A constituting one of the composite mixed yarns constituting the woven or knitted fabric of the present invention.
It is a schematic diagram which shows the embodiment of the cross section of FIG.

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Claims (1)

[Claims] 1. A composite mixed yarn in which a hollow monofilament yarn A having a hollowness of 10% or more and a fineness of 8 to 70 denier and a multifilament yarn B having a single filament fineness of 3 denier or less are mixed at least. A novel lightweight woven or knitted fabric characterized by constituting a part thereof.