KR101530475B1 - Knitted fabric with high functionality - Google Patents

Abstract

The present invention relates to a high functional knitted fabric of a two-layer structure comprising a surface layer made of a polyamide-based modified cross-section yarn of a flat cross-section including sunblock, and a back layer made of a perspiration-absorbent and quick-drying fabric polyamide-based modified cross-section yarn. The high functional knitted fabric of the present invention is able to be widely used with various purposes such as a sport, a leisure, a normal dress, etc. since the high functional knitted fabric has excellent ultraviolet ray blocking, and perspiration-absorbent and quick-drying performances.

Description

{KNITTED FABRIC WITH HIGH FUNCTIONALITY}

The present invention relates to a knitted fabric, and more particularly, to a knitted fabric which, when used as a cover, shields ultraviolet rays harmful to the human body and at the same time absorbs perspiration, exhibits properties of easy drying, .

As the level of living has recently improved and the quality of life has been improved, the general public's interest in sports and leisure activities has increased, and the population enjoying various leisure and sports activities is rapidly increasing. Accordingly, development of a functional fiber material having sweat-absorbing and quick-drying properties for absorbing sweat released during human activities and drying well is required. Furthermore, due to the destruction of the ozone layer on the earth, ultraviolet rays have a great adverse effect on skin, and development of a material having ultraviolet shielding performance is required.

Synthetic fabrics such as nylon, polyester, etc., which are mainly used for general sportswear fabrics, have a disadvantage in that they can not absorb perspiration at all when worn as garments because of their inherent nature. To solve this problem, the polyurethane resin is applied to the synthetic fabric by dry coating, wet coating or laminating method to impart moisture permeability to the fabric so that sweat generated from the human body can be discharged in a limited manner instead of absorbency However, when the sweat is discharged in a short period of time, the breathability alone can not satisfy the comfort of the human body.

Specifically, as a conventional technique for imparting water absorbency to a synthetic fiber fabric, a method of pouring a synthetic fiber fabric into a hydrophilic absorbent solution and then scouring the synthetic fiber fabric with a constant picking rate (60 to 100%) is used. This method disadvantageously removes the effect of the drug due to frequent washing, and causes delicate skin to cause skin troubles.

In addition, conventional absorbent letters have been mainly used for the blend of cotton, cotton and polyester blend, and because of the high water content of cotton, when the sweat is increased, the cloth becomes dewy, And the sweat can not be dried quickly.

Meanwhile, Korean Patent Publication No. 1986-2171 proposes a sweat-absorbent quick-drying warmth forge, in which a bristle layer of hydrophobic synthetic fibers, a hollow fiber layer of microporous fibers and a hydrophobic microfine fiber layer are laminated in order, but the forge is expensive, And is not suitable for general purpose sportswear.

Meanwhile, in Korean Patent Publication No. 1991-5431, a cylinder for knitting a face contacting with the skin such that the synthetic filament of this island is alternately arranged in the transverse direction on the surface contacting with the skin when the synthetic filament is supplied to the double- There is proposed a method of knitting needles of needles or dial needles under specific conditions and treating the produced letters with a hydrophilic resin. However, the above method has a problem that the hydrophilic effect is deteriorated over time because a hydrophilic resin is provided on the letter in the post-processing.

Further, since the conventional ultraviolet screening product is manufactured by adsorbing the ultraviolet screening agent on the fibers or by applying the ultraviolet screening agent on the surface of the fabric, the properties of the ultraviolet screening product deteriorate, the touch is poor, and durability and washability are poor.

It is an object of the present invention to provide a high-function letter which has excellent sweat-absorbing quick-drying property semi-permanently, comfortable to wear, and excellent in ultraviolet ray shielding performance.

According to one aspect of the present invention for achieving the above object,

Layer structure of a backside layer and a surface layer, and the surface has three to six

Wherein the back layer has an elongation of 35 to 40% and an elastic recovery rate of 85 to 92%, wherein the back layer has a continuous uneven portion, an ultraviolet ray blocking rate of 95% or more and an ultraviolet barrier index of 10 to 50, And has a differential moldability of 1.2 to 2.0. The present invention relates to a highly functional letter.

The letter of the present invention is formed as a two-layer structure of a backing layer contacting the skin and a surface layer exposed to the outside air, wherein the surface layer is composed of a polyamide-based modified cross-section yarn having an ultraviolet shielding performance, and the backing layer is formed of a polyamide- Sectional shape so as to provide an advantage of effectively shielding ultraviolet rays while absorbing and dissipating the perspiration emitted from the human body due to interaction between the sweat-absorbing quick-setting back layer and the ultraviolet barrier layer.

The letter of the present invention is excellent in sweat-absorbing and quick-drying property, and has no feeling of sticking to the skin or feeling damp when used for clothing, thus providing a comfortable feeling when used for various purposes such as sports, leisure, general clothing, and the like.

Furthermore, the letter of the present invention is not deteriorated by washing or the like because the appearance of sweat-absorbent quick-drying performance is attributable to the structure of the letter and the characteristics of the yarn, and the effect is permanently sustained.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view of a polyamide-based profiled cross-section yarn used in the surface layer of a high-performance letter of an embodiment of the present invention.
2 is another cross-sectional view of a polyamide-based modified cross-section yarn used in the surface layer of a high-performance letter of an embodiment of the present invention.
3 is a cross-sectional view of a polyamide based sweat-absorbing, quick drying, modified cross-section yarn for use in the backside layer of a high functionality letter of an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

As used herein, the term "sweat-absorbent quick-drying" refers to a capability of rapidly absorbing moisture from the human body and drying it in a short time. That is, the ability to quickly absorb and remove moisture such as sweat and water vapor from the human body, which is worn by the wearer.

In the present invention, the term " flat yarn " means a form having one or more concave-convex structures by stretching a circular cross section in a straight line. Examples of the flattened yarn include, for example, tri-, tetra- or pentasaccharides.

The high-performance letter of the present invention is two-ply paper made of a surface layer and a backing layer. The surface layer is composed of a polyamide yarn having ultraviolet light shielding performance, and the back layer is composed of a sweat-absorbing quick drying polyamide yarn.

As shown in Fig. 1, the surface layer is composed of a polyamide-based modified cross-section yarn having a flattened cross-section having three to six consecutive uneven portions of the same shape. As shown in Fig. 2, the flattened cross-section may be formed in the form of a triple acid (a), stillbell (b), pentasaccharide (c), or cumic acid (d).

In the present invention, the polyamide-based yarn comprises a polyamide 3, a polyamide 4, a polyamide 6, a polyamide 7, a polyamide 8, a polyamide 9, a polyamide 11, a polyamide 12, a polyamide 6,6, , And 10, and may be an aromatic polyamide-based resin.

Also, the surface layer may contain at least one inorganic UV-blocking agent selected from the group consisting of titanium dioxide, zinc oxide, iron oxide, cerium oxide, zirconium dioxide, chromium trioxide, copper oxide, 1 to 10% by weight.

1, the flatness of the cross-section yarn of the surface layer is defined as the ratio of the cross-sectional shape of the single yarn to the length (L / W) in the horizontal direction. When the flatness is less than 1.5, If it exceeds 5.0, the cross section becomes non-uniform, and if it is severe, a problem arises that the spinning operation becomes impossible.

The backside layer of the high-performance letter of the present invention is composed of a sweat-absorbent quick drying polyamide-based modified cross-section false warp yarn having an elongation of 35 to 40%, an elastic recovery rate of 85 to 92%, and a rejection degree of 1.2 to 2.0.

In the present invention, the polyamide-based modified cross-section yarns used in the surface layer have a process water ratio of 4.2 and are more hydrophilic than polyester. The backside layer is hydrophobic, and if it is hydrophobic, a repulsive force is generated to rapidly transfer the sweat generated in the human body to the outside from the contact surface. The hydrophilic yarn having a flat cross section of the surface layer attracts sweat and absorbs it quickly. Furthermore, since the flat section of the surface layer also has sweat-absorbent quick-drying properties, the sweat discharged from the back layer is rapidly transferred to the surface layer due to the capillary phenomenon, and then dried quickly through a large surface area. The pushing power of the backside layer and the capillarity of the surface layer can provide an excellent hygroscopic drying function as compared with a quick-drying sweat-absorbent material.

The sweat-absorbent quick-drying non-uniform cross-section of the back layer has a cross-sectional shape as shown in Fig. This capillary phenomenon due to the unique cross section quickly absorbs the sweat emitted from the human body. That is, the fiber has a structure in which the cross-sectional shape of the fiber has four long axes intersecting each other and two short axes formed at the ends of the long axes, and the sectional shape shown in FIG. 3 satisfies the following condition Lt; / RTI >

[Equation 1]

W ₁ L ₁ : W ₂ L ₂ : W ₃ L ₃ = a: b: 1

In this formula,

W ₁ is the width of the first major axis portion, L ₁ is the length of the first major axis portion,
W ₂ is the width of the first and second shortened portions, L ₂ is the length of the first and second shortened portions,
W ₃ is the width of the second major axis portion, L ₃ is the interval between the major axis portion and the minor axis portion,
Wherein a is a real number satisfying 3.0? A? 5.5,

delete

b is a real number satisfying 1.5? b? 3.5.

If the values of a and b are out of the allowable range, the formation of the channel is insufficient and the shape or the shape of the channel is deformed, so that a desired result can not be obtained.

The swollen, quick-drying polyamide-based modified cross-section of this backing layer has a deviation of from 1.2 to 1.6. The diagram shown in the present invention can be obtained by the following equation (1).

[Formula 1]

Deformation degree = (outer circumference) ² / 4π × sectional area

When the degree of dehydration of the swollen, quick-drying polyamide-based modified cross-section yarn of the back layer is less than 1.2, the formation of micropores exhibiting hygroscopicity is insufficient and the performance of hygroscopicity and quick drying performance is remarkably decreased, The physical properties and the fairness are poor.

The double-headed letter of the present invention is usually formed as a double-sided circular knitting machine. The swollen quick-drying polyamide-modified cross-section is supplied to the cylinder needle or dial needle knitting the backside layer at the time of preparation, and the ultraviolet light-shielding polyamide cross-section cross-section yarn is supplied to the surface layer.

The UV shielding polyamide-based modified cross-section yarns are obtained by melting a polyamide-based polymer at a temperature of 255 ° C to 265 ° C, adding a titanium dioxide, a zinc oxide, an iron oxide, a cerium oxide, a zirconium dioxide, At least one inorganic UV-blocking agent selected from the group consisting of chromium trioxide, copper oxide, and nickel oxide is mixed and added. The addition amount of the ultraviolet screening agent is added to the fiber in an amount of 1 to 10% by weight, preferably 3 to 8% by weight. When the content of the ultraviolet screening agent is less than 1% by weight, the ultraviolet ray shielding effect is insufficient, and when it exceeds 10% by weight, it is not economical.

The sweat-absorbing, quick-drying polyamide-based modified cross-section yarn constituting the backing layer is made of polyamide-unstretched filaments at 35 to 40% elongation and elongation at 85 to 92% If the backing layer is made of a backing layer having excellent crimpability and bulky properties, an air layer is formed between the filaments constituting the false twist yarn due to the bulk property of the false twisting yarn itself, A letter having excellent feel and good shape stability can be provided.

In the high functional letter of the present invention, sweat is absorbed by the capillary phenomenon through the backside layer and sweat is transferred to the surface layer connected with the backside layer, and sweat is released into the air and dried. In addition to the quick- Provides excellent UV protection.

The high functionality letter of the present invention may further include an elastic layer composed of elastic fibers between the surface layer and the backing layer to improve elasticity for sports and leisure use.

Hereinafter, the present invention will be described in detail with reference to examples and comparative examples.

The properties of letters in the present invention were evaluated by the following methods.

* Absorption rate (mm / 10 min)

Measured by KSK 0815.5.27.1, Method B Specifically, a sample is sampled at a length of 3 cm and a length of 20 cm, the end portion of the sample is immersed in water, and the length of water ascended along the sample of the letter is measured.

* Drying speed (min)

Measured by the method of KSK 0815.5.28.1. Under standard conditions, immerse an amount of water equal to the sample weight (100% by weight) in the letter sample, and then measure the time required for the sample to completely dry.

* UV protection

(KS K 0850) 'test method for textile products.

- The UV cut rate is calculated as follows.

UV blocking rate (%) = 100 - UV transmittance (%)

Where T is the spectral transmittance at the wavelength?.

- The sun protection factor is calculated as follows.

E?: Erythema coefficient at each wavelength;

Sλ: sunlight at each wavelength of 40th latitude, ultraviolet ray 20th, midsummer at noon

T?: Transmittance,

Δλ: Measured wavelength interval

λ: wavelength

The ultraviolet screening performance is better when the UV blocking rate is higher and the UPF index is higher, and the UPF index 50+ means the UPF index is 51 or more.

≪ Example 1 >

A 28-gauge double circular knitting machine was prepared by spinning a polyamide polymer melt prepared by adding 5% by weight of zinc oxide having a diameter of 15 占 퐉 to the surface layer raw material and having a UV blocking rate of 96% and a UV blocking index of 50+ The nylon 6 yarn of the stillbirth flattened section cross section was blown off, the backing yarn had an elongation of 37% and an elastic recovery rate of 90%, and an area ratio of the first to third branches in the sectional shape of Fig. 3 was 4.6: 2.1 : A single nylon 6 false twisted yarn is suddenly delivered, and a letter of double yarn is arranged. The properties of the prepared letters were evaluated and the results are shown in Table 1 below.

≪ Example 2 >

A 28-gauge double circular knitting machine was prepared by spinning a polyamide polymer melt prepared by adding 5% by weight of zinc oxide having a diameter of 15 占 퐉 to the surface layer raw material and having a UV cut rate of 95.9% and a UV cutoff index of 50+ The nylon 66 yarn of the stillbirth flattening cross section was suddenly blown, the backing yarn had an elongation of 37% and an elastic recovery rate of 90%, and an area ratio of the first to third branches in the sectional shape of Fig. 3 was 4.6: 2.1 : I send a single nylon 66 random letter, and I write a double letter. The properties of the prepared letters were evaluated and the results are shown in Table 1 below.

≪ Comparative Example 1 &

A regular nylon yarn is applied to a 28 gauge double circular knitting machine as a surface layer yarn, and a polyester false yarn is fed to a backing yarn to form a double letter. The properties of the prepared letters were evaluated, and the results are shown in Table 1 below.

≪ Comparative Example 2 &

Put on a 28-gauge double circular knitting machine with cotton yarn as surface layer yarn, and send polyester false yarn as backing yarn yarn to make a letter of double yarn. The properties of the prepared letters were evaluated, and the results are shown in Table 1 below.

Absorption rate (mm / 10 min) Drying Rate (min) UV blocking rate UPF Index Weil direction Course direction Example 1 182 157 104 96% 50+ Example 2 164 120 112 95.9% 50+ Comparative Example 1 118 96 118 Comparative Example 2 140 107 196

The high-functionality letter according to the present invention has a single yarn fineness of 0.5 to 3.5 denier, an ultraviolet light blocking rate of 95% or more, and an improvement of absorbability and dryness by more than 50%.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

W ₁ : width of the first branch, L ₁ : length of the first branch
W ₂ : width of the second branch, L ₂ : length of the second branch
W ₃ : width of the third branch, L ₃ : length of the third branch

Claims (7)

Layer structure of a back surface layer and a surface layer, and the surface layer has an ultraviolet shielding polyamide type release mold having three to six continuous concave and convex portions of the same shape, a ultraviolet light blocking ratio of 95% or more, and a UV blocking index of 10 to 50 Characterized in that the backing layer is composed of a sweat-absorbent quick-drying polyamide-based modified cross-section false-twist yarn having an elongation of 35 to 40%, an elastic recovery rate of 85 to 92% and a rejection degree of 1.2 to 1.6.
[Claim 2] The method of claim 1, wherein the sucked quick-drying polyamide based modified cross-section false twist yarn has a structure in which the cross-sectional shape of the fiber has four long-axis axes intersecting each other and two short axes formed at the long- Wherein the cross-sectional shape satisfies a condition of the following formula (1).
[Equation 1]
W ₁ L ₁ : W ₂ L ₂ : W ₃ L ₃ = a: b: 1
In this formula,
W ₁ is the width of the first major axis portion, L ₁ is the length of the first major axis portion,
W ₂ is the width of the first and second shortened portions, L ₂ is the length of the first and second shortened portions,
W ₃ is the width of the second major axis portion, L ₃ is the interval between the major axis portion and the minor axis portion,
Wherein a is a real number satisfying 3.0? A? 5.5,
b is a real number satisfying 1.5? b? 3.5.
The high-performance letter according to claim 1, wherein the cross-sectional shape of the ultraviolet shielding polyamide-based modified cross-section yarn is a flattened shape of tri-, tetra- or tetravalent.
The surface layer according to claim 1, wherein the surface layer is made of one or more inorganic materials selected from the group consisting of titanium dioxide, zinc oxide, iron oxide, cerium oxide, zirconium dioxide, chromium trioxide, copper oxide, Characterized in that it comprises 1 to 10% by weight of a sunscreen in the fiber.
The polyamide resin according to claim 1, wherein the polyamide-based resin is at least one selected from the group consisting of polyamide 3, polyamide 4, polyamide 6, polyamide 7, polyamide 8, polyamide 9, polyamide 11, polyamide 12, And a polyamide resin selected from the group consisting of polyamides 6,10.
The high functionality letter of claim 1, wherein the high functionality letter further comprises an elastic layer comprised of elastic fibers between the surface layer and the backside layer. The high-performance letter according to claim 1, wherein the flatness of the ultraviolet shielding polyamide-based modified cross-section yarn is 1.5 to 5.0.

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