KR20250041442A - High-performance fabrics and school uniforms containing them - Google Patents

Abstract

A highly functional fabric is provided, which includes a warp yarn made of a blended spun yarn containing regenerated fibers and synthetic fibers, a blended spun yarn made of a natural protein fiber and a PET synthetic fiber, and a polyurethane weft yarn.

Description

HIGH-PERFORMANCE FABRICS AND SCHOOL UNIFORMS CONTAINING THEM

The present invention relates to a high-functionality fabric and a school uniform including the same, and more specifically, to a high-sensitivity, stretchable fabric having excellent elasticity and recovery properties and excellent wash fastness, and a high-functionality fabric having comfort and excellent shape stability even during a long period of wearing as characteristic of school uniforms, and a school uniform including the same.

School uniforms made with existing fabrics are easily exposed to sweat and contamination when worn for long periods of time due to the nature of the clothing, and when the arms, legs, or joints are bent or moved, the existing fabrics are easily wrinkled, and after washing, the fabric stretches significantly, easily deforming the shape of the clothing. In addition, due to the characteristics of polyurethane, the strength and elastic recovery are significantly reduced due to frequent washing, making it difficult to wear for long periods of time.

Therefore, there is a demand for the development of a fabric that can maintain excellent elastic recovery even when exposed to sweat and contamination, and is more comfortable to wear by providing the resilience and elasticity of wool and polyurethane materials, and the soft feel of viscose rayon that maintains comfort and a new-like appearance even after long-term wear.

Korean Registered Patent No. 10-2578351 Korean Registered Patent No. 10-2578120

The purpose of the present invention is to manufacture a fabric having excellent properties such as active elasticity, recovery, and wash fastness, along with the use of polyurethane fibers, and to minimize the defect rate in the post-process and produce the best quality by applying the appropriate yarn twist/meter and the best warp density and weft density during the manufacturing process.

In order to solve the above problem, according to one aspect of the present invention, a highly functional fabric is provided, which includes a warp yarn comprising a blended spun yarn including regenerated fibers and synthetic fibers, a blended spun yarn comprising natural protein fibers and PET synthetic fibers, and a polyurethane weft yarn.

According to one embodiment of the present invention, the slope may include at least one of wool, corn extract, polyester, zentra, viscose rayon and polyethylene terephthalate.

According to one embodiment of the present invention, the slope, in the first claim, the slope may be a spun yarn of 30-60 parts by weight of wool and 40-70 parts by weight of polyester for 100 parts by weight of Nm 1/60`s in total, and a spun yarn of 50-65 parts by weight of polyester staple fiber and 10-50 parts by weight of viscose rayon for 100 parts by weight of Ne 40/1`s in total, twisted at S 800±50 twist/meter.

According to one embodiment of the present invention, the above-mentioned yarn may be a yarn that is spun with Nm 1/60’s (wool/polyester) and Ne 40/1’s (viscose rayon/polyester) at an appropriate twist count of S800 ± 50 (Twist/Meter).

According to one embodiment of the present invention, the slope may be a spun yarn of 50-60 parts by weight of wool (fineness 20.5 μ to 22.5 μ) and 40-50 parts by weight of polyethylene terephthalate (PET) for 100 parts by weight of Nm 1/60`s in total, and a spun yarn of 50-65 parts by weight of polyethylene terephthalate (PET) and 35-50 parts by weight of viscose rayon for 100 parts by weight of Ne40/1`s in a ratio of 1:1, twisted at S yarn 800±50 twist/meter.

According to one embodiment of the present invention, the slope may be a spun yarn of 50-60 parts by weight of wool, 20-30 parts by weight of polyester, and 10-20 parts by weight of zentra for 100 parts by weight of m 1/60`s in total, and a spun yarn of 50-65 parts by weight of polyester, and 35-50 parts by weight of viscose rayon for 100 parts by weight of Ne 40/1`s in total, with a twist/meter of S 800±50.

According to one embodiment of the present invention, the above-mentioned weft may be a core-type 40d polyurethane filament twisted into each warp.

According to one embodiment of the present invention, the fabric may contain 30 to 35 parts by weight of wool, 45 to 60 parts by weight of polyester, and 15 to 20 parts by weight of viscose rayon, based on 100 parts by weight of the total fabric.

According to one embodiment of the present invention, the polyurethane may be present in an amount of 1 to 5 parts by weight based on 100 parts by weight of the total fabric.

According to another aspect of the present invention, a school uniform comprising any one of the functional fabrics described above is provided.

The present invention provides a garment wearer with the best soft touch, high elasticity and comfort, and wool, a natural fiber, has water-repellent properties in the epidermal layer due to the characteristics of the raw material, and the inner fiber layer has a large amorphous region and is a porous material, so it has the characteristics of high absorption and moisture absorption, thereby demonstrating excellent moisture absorption and heat retention, and the subtle gloss and soft touch of viscose rayon minimizes troubles on sensitive skin by making the entire fabric soft after post-processing.

The disadvantages of existing school uniforms, such as loss of elasticity and deformation caused by long-term wearing, were improved by using natural materials such as wool and high-elasticity polyurethane yarn as the weft yarn.

By applying the use of these warp and weft mixed yarns, it is used to produce fabrics such as school uniforms with better elasticity, and it provides the best wearing comfort by using natural fiber materials such as wool and high-elasticity materials to prevent skin troubles caused by sweat and contamination due to long-term wear, and it has excellent absorbency and maintains a comfortable air layer between the skin and clothing.

Figure 1 is a schematic diagram of the structure and yarn arrangement of a fabric according to one embodiment of the present invention.
Figure 2 is a schematic diagram of a sloped mixed sand according to one embodiment of the present invention.
Figure 3 is a schematic diagram of a mixed yarn according to one embodiment of the present invention.
Figure 4 illustrates an operator for deriving the optimal number of years of the present invention.
Figure 5 is a test report according to Example 3 of the present invention.

Hereinafter, the present invention will be described in detail. Prior to this, the terms or words used in this specification and the claims should not be interpreted as limited to their usual or dictionary meanings, and should be interpreted as meanings and concepts that conform to the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain his or her own invention in the best way. Therefore, the configurations described in the embodiments described in this specification are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and it should be understood that there may be various equivalents and modified examples that can replace them at the time of the present application.

According to one aspect of the present invention, a highly functional fabric is provided, which includes a warp yarn comprising a blended spun yarn comprising regenerated fibers and synthetic fibers, a blended spun yarn comprising natural protein fibers and PET synthetic fibers, and a polyurethane weft yarn.

This invention uses a warp yarn made of a blended spun yarn composed of regenerated fibers and synthetic fibers with excellent moisture absorption and a soft feel, and a blended spun yarn made of wool, which is a natural protein fiber, and PET synthetic fiber, and as a weft yarn, 4D polyurethane filaments are twisted into a core for each warp yarn to provide a fabric with excellent elasticity and a soft feel, and a high air content between the fabric and the skin, which has good heat retention and wrinkle recovery and is convenient for movement.

In addition, the present invention ensures the best elasticity and comfort for the wearer of the clothing, minimizes sensitive skin troubles by ensuring moisture absorption, heat retention, and a soft texture when touching the skin, and maintains the best shape stability even after repeated washing, thereby minimizing the decrease in elasticity and deformation caused by long-term wearing of existing school uniforms, and uses natural materials such as wool as a warp yarn by twisting and plying polyester and viscose rayon mixed fibers, and uses the weft yarn by twisting and plying each yarn of the warp yarn with polyurethane yarn in a tri-ply manner, so that the physical properties can be stable and it can maintain a soft texture and excellent elasticity.

By applying this type of blend of yarns and elastic yarns to the weft, it can be used to produce fabrics such as school uniforms with better elasticity, and by using natural materials such as wool and soft-touch polyester and rayon yarns to prevent skin troubles caused by sweat and contamination due to long-term wear, it can provide the best comfortable and soft wearing experience by maintaining excellent moisture absorption and an air layer between the skin and clothing.

In addition, according to one embodiment of the present invention, a functional fabric can be manufactured by twisting 40d polyurethane filaments into a core using a blended spun yarn of regenerated fibers and synthetic fibers, which has excellent moisture absorption, antistatic properties, and a soft touch, and a corn extract and PET synthetic fibers with a bi-component structure that are compositely spun with natural wool fibers in a side-by-side form.

More specifically, for 100 parts by weight of the warp Nm 1/60's, one spun yarn of 50-60 parts by weight of wool and 40-50 parts by weight of polyester and for 100 parts by weight of the warp Ne 40/1's, one spun yarn of 50-65 parts by weight of polyester staple fiber and 35-50 parts by weight of viscose rayon are double-twisted with S twist 800±50 twist/meter, and the weft is a mixed spun yarn composed of 50-60 parts by weight of wool and 50-65 parts by weight of polyester staple fiber for 100 parts by weight of Nm 1/60's, and a spun yarn of 50-65 parts by weight of polyester and 35-50 parts by weight of viscose rayon for 100 parts by weight of Ne 40/1's, and a core of 40 denier polyurethane fiber is double-twisted with S twist Using a yarn twisted at 850±50 twist/meter, it can be produced with a 2up/2down twill structure at an appropriate warp density and weft density of 100±20 counts/inch × 72±10 counts/inch. Here, it is the warp and weft density per inch after finishing processing.

Meanwhile, according to another embodiment of the present invention, the mixed yarn can form 30 to 35 parts by weight of wool, 45 to 60 parts by weight of polyester, 15 to 20 parts by weight of viscose rayon, and 2 parts by weight of polyurethane based on 100 parts by weight of the total.

Hereinafter, the present invention will be described in more detail, and FIG. 1 is a schematic diagram of the structure and yarn arrangement of a fabric according to one embodiment of the present invention, FIG. 2 is a schematic diagram of a warp yarn blend according to one embodiment of the present invention, and FIG. 3 is a schematic diagram of a weft yarn blend according to one embodiment of the present invention.

Referring to FIGS. 1 to 3, a fabric according to one embodiment of the present invention forms 30 to 35 parts by weight of wool, 45 to 60 parts by weight of polyester, 15 to 20 parts by weight of viscose rayon, and 1 to 5 parts by weight of polyurethane, based on 100 parts by weight of the total.

In addition, for every 100 parts by weight of warp Nm 1/60`s, a spun yarn of 50-60 parts by weight of wool, 20-30 parts by weight of polyester, and 10-20 parts by weight of zentra is used, and for every 100 parts by weight of Ne 40/1`s, a spun yarn of 50-65 parts by weight of polyester, and 35-50 parts by weight of viscose rayon is used, and the weft yarn is spun with a core method using a polyurethane fiber centered on the warp mixed yarn, and the spun yarn is spun with a S twist/meter 800±50 twist/meter, so that it can be produced at an appropriate density of 100±20 pieces/inch × 72±10 pieces/inch for warp density and weft density in a 2up/2down twill structure.

The warp yarn (100) is spun by mixing 50-60 parts by weight of wool (1) (fineness 20.5 μ to 22.5 μ) and 40-50 parts by weight of polyethylene terephthalate (PET) Stable fiber with respect to 100 parts by weight of Nm 1/60`s in a 1:1 ratio and 50-65 parts by weight of polyethylene terephthalate (PET) and 35-50 parts by weight of viscose rayon with respect to 100 parts by weight of Ne40/1`s in a 1:1 ratio to form a twist work warp yarn with S yarn 800 ± 50 twist/meter.

The weft (200) is a spun mixed yarn of 50-60 parts by weight of wool (fineness 20.5 μ ~ 22.5 μ) and 40-50 parts by weight of polyethylene terephthalate (PET) Stable fiber for 100 parts by weight of Nm 1/60`s, and a spun mixed yarn of 50-65 parts by weight of polyethylene terephthalate (PET) and 35-50 parts by weight of viscose rayon for 100 parts by weight of Ne40/1`s in a 1:1 ratio, and 1 strand of 40d polyurethane filament is spun three times in a 1:1:1 ratio. The spandex supplied by the polyurethane supply device is supplied to the core part of the yarn at a draw ratio of 2.5 to 3.0, and 2 strands of the mixed yarn are It is formed in a form that wraps around the spandex, minimizing damage from friction and heat due to exposure of the spandex.

In addition, yarn spun at S-twist 850±50 is used as weft yarn.

Meanwhile, before the above warp yarn (100) and weft yarn (200) are formed, a dyeing step of the warp yarn and weft yarn is included, and this is related to work efficiency and quality issues depending on the fabric color, namely, dry and wet friction fastness, which are vulnerable areas of polyurethane fibers due to the use of disperse dyes, so dyeing work must be performed before the warp yarn and weft yarn.

In the case of dark colors, if white polyurethane is used as is (because it is not dyed), the appearance may become dirty due to unintended gloss or filament breakage caused by friction. Therefore, dope-dyed polyurethane filaments should be used depending on the color.

For melange colors, 1 to 3 bath dyeing is performed on each material, such as polyester, wool, or viscose rayon, within the categories where the dyeing process is easy and there are no quality issues.

The fabric of the present invention is formed by weaving according to the arrangement of warp and weft yarns, and when woven with a 2/2 twill structure, the appropriate density of warp and weft yarns (direct density) is 80 to 88 warp yarns/inch and 70 ± 5 weft yarns/inch, and the width of the woven fabric (raw fabric width) forms a fabric of 73 to 74 inches.

As described above, the blending ratio of the woven fabric forms 30 to 35 parts by weight of wool, 50 to 60 parts by weight of polyester, 15 to 20 parts by weight of viscose rayon, and 2 parts by weight of polyurethane per 100 parts by weight of the total.

The present invention having the aforementioned composition is a fabric having excellent soft texture, high elasticity, recovery, and stable wash fastness, and is a fabric having comfort and excellent shape stability even after long-term wearing, as is characteristic of school uniforms.

In addition, in the present invention, the warp yarn is spun by twisting Nm 1/60’s (wool/polyester) spun yarn and Ne 40/1’s (viscose rayon/polyester) spun yarn with an appropriate twist number of S800 ± 50 (Twist/Meter), and the weft yarn is spun by twisting a mixed spun yarn composed of 50-60 parts by weight of wool and 50-65 parts by weight of polyester staple fibers with respect to the total 100 parts by weight of Nm 1/60’s, and a spun yarn composed of 50-65 parts by weight of polyester and 35-50 parts by weight of viscose rayon with respect to the total 100 parts by weight of Ne 40/1’s, with 40 denier polyurethane fibers centered in a core manner with an S twist number of 850 ± 50. Meanwhile, FIG. 4 illustrates an operator for deriving the optimal number of years of the present invention. Referring to FIG. 4, the basis for deriving the optimal number of years is as follows.

W(weight) = V(volume) × P(specific gravity)

V(volume) = (d(diameter of fiber) / 2)²π × L(length)

Nm(count) = 1(meter)/W(gram)

1meter = 1,000,000μ

Wool specific gravity = 1.31

Using the above formula

W = (πd²/4) × 1meter × 1.31

Nm = (4×1,000,000)/ (πd² × 1.31)

d = =

However, since the arrangement of the fibers is not uniform, an unevenness coefficient of 1.06 is applied.

d = = =

dπ(circumference) = × π

So 1 Spiral is 2d.π = × 2π.

The number of spirals per 1 meter of yarn

TPM(Twist/Meter) = (1,000,000/ ) = 166.4 ×

However, considering the 2% contraction due to the speaker,

TPM = 166.4 × 1.02 × = 169.7 ×

170 is a bit stiff and tends to make the fabric feel stiff, so a decrease of about 15% is appropriate as an experience.

Therefore, with an average number of twists Nm 32's, TPM = (170 × 0.85) = It is desirable to apply the appropriate TPM of 800 ±50 (Twist/Meter) as 817.

Accordingly, the inventors of the present invention formed a fabric with a width of 73 to 74 inches by woven fabric with a density (direct density) of 80 to 88 counts/inch × 70 ± 5 counts/inch of warp and weft yarns.

The present invention will be described in more detail based on the following examples. However, the following examples are only examples for describing the present invention in more detail, and the present invention is not limited by the following examples.

Example 1

For 100 parts by weight of the warp Nm 1/60's, one spun yarn of 55 parts by weight of wool and 45 parts by weight of polyester and for 100 parts by weight of the warp Ne 40/1's, one spun yarn of 60 parts by weight of polyester staple fiber and 40 parts by weight of viscose rayon are double-twisted with a twist of 800±50 S/meter, and for the weft, a mixed spun yarn of 55 parts by weight of wool and 60 parts by weight of polyester staple fiber is double-twisted with a twist of 850±50 S/meter, with a 2up/2down twill structure. A high-functionality fabric was manufactured with an appropriate density of 100±20 counts/inch × 72±10 counts/inch for warp density and weft density, respectively.

Example 2

The warp yarn was spun in a ratio of 1:1 with 55 parts by weight of wool (fineness 20.5μ to 22.5μ) and 45 parts by weight of polyethylene terephthalate (PET) Stable fiber for every 100 parts by weight of Nm 1/60`s, and with 60 parts by weight of polyethylene terephthalate (PET) and 40 parts by weight of viscose rayon for every 100 parts by weight of Ne40/1`s. The warp yarn was spun in a ratio of 1:1 with 800±50 twist/meter of S yarn, and the weft yarn was a single strand of 40d polyurethane filament. Afterwards, three strands of warp and weft yarns are simultaneously spun in a 1:1:1 ratio, and the spandex supplied by the polyurethane supply device is supplied to the core part of the yarn at a draw ratio of 2.5 to 3.0, and two strands of mixed yarn are spun in a form of wrapping the spandex yarn to minimize friction and damage due to heat caused by exposure of the spandex, and the yarn spun at S twist 850±50 twist/meter in the twisting machine is used as the weft yarn to manufacture a high-functional fabric.

The physical properties were measured as follows.

<Tensile strength (g/d), initial modulus (g/d), and elongation (%)>

According to ASTM D2256 method, strain-stress curves of polyethylene yarns were obtained using a universal tensile tester of Instron Engineering Corp., Canton, Mass. The sample length was 250 mm, the tensile speed was 300 mm/min, and the initial load was set to 0.05 g/d. The tensile strength (g/d) and elongation (%) were obtained from the stress and elongation at the breaking point, and the initial modulus (g/d) was obtained from the tangent line that gave the maximum slope near the origin of the curve. The measurements were performed five times for each yarn, and the average value was calculated.

<Peeling resistance>

The pilling resistance of the fabric was measured at 14,400 rotations using a Martindale tester according to the pilling box method specified in KS K ISO 12945-1:2014. The pilling resistance grade criteria are as follows.

- Grade 1: Very severe peeling

- Grade 2: Severe peeling

- Grade 3: Moderate peeling

- Grade 4: Slight peeling

- Grade 5: No peeling at all

<Wear resistance>

The abrasion resistance of the fabric was measured using a Martindale tester according to the Martindale method specified in KS K ISO 12947-2:2014. Specifically, the number of cycles until two threads in the fabric broke was measured.

<Durability after washing>

The manufactured fabric was washed and dried 100 times using a standard washing machine cycle, and then compared with the properties of the initial fabric before washing.

Evaluation Example 1 - Fabric properties

division Tensile strength (g/d) Initial modulus (g/d) Elongation (%) Peeling resistance My wear resistance Example 1 13.03 168 9.6 4-5 20,000 or more Example 2 13.8 180 9.7 4-5 20,000 or more

Evaluation Example 2 - Durability after washing

division Peeling resistance My wear resistance Example 1 4-5 20,000 or more Example 2 4-5 20,000 or more

Referring to Table 1 and Table 2 above, it can be confirmed that the functional fabric according to the present invention has excellent elasticity and recovery properties and excellent washing fastness.

Example 3

The warp yarn was spun in a ratio of 1:1 by blending 31.5 parts by weight of wool (fineness 20.5μ to 22.5μ) and 50.9 parts by weight of polyester for every 100 parts by weight of Nm 1/60`s, and 15.5 parts by weight of viscose rayon for every 100 parts by weight of Ne40/1`s, to form a twist/meter yarn with S yarn 800±50. The weft yarn used 2.1 parts by weight of 40d polyurethane filament, one strand. Afterwards, three strands of warp and weft yarns are simultaneously spun in a 1:1:1 ratio, and the spandex supplied by the polyurethane supply device is supplied to the core part of the yarn at a draw ratio of 2.5 to 3.0, and two strands of mixed yarn are spun in a form of wrapping the spandex yarn to minimize friction and damage due to heat caused by exposure of the spandex, and the yarn spun at S twist 850±50 twist/meter in the twisting machine is used as the weft yarn to manufacture a high-functional fabric.

Evaluation Example 3

The fabric of Example 3 was commissioned to the Korea Textile Research Institute to measure the abrasion strength, film, washing fastness, and formaldehyde content of the fiber blend.

FIG. 5 is a test report according to Example 3. Referring to FIG. 5, it can be confirmed that the fabric according to Example 3 of the present invention exhibits excellent wear strength of 20,000 or more, pilling of grade 4, and washing fastness of 3-5, which are all excellent.

The present invention has been described so far with a focus on preferred embodiments. Those skilled in the art will understand that the present invention can be implemented in modified forms without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the present invention is indicated by the claims, not the above description, and all differences within the scope equivalent thereto should be interpreted as being included in the present invention.

1: Wool/poly blend
2: Poly/viscose rayon blend
3: Polyurethane filament
100: slope
200: Victim

Claims (10)

A warp yarn made of a blended spun yarn containing regenerated fibers and synthetic fibers and a blended spun yarn containing natural protein fibers and PET synthetic fibers; and
High-performance fabric containing polyurethane weft; In the first paragraph,
The above-mentioned high-performance fabric comprises at least one of wool, corn extract, polyester, zentra, viscose rayon and polyethylene terephthalate. In the first paragraph,
The above slope is,
A highly functional fabric, which is made by twisting 30-60 parts by weight of wool and 40-70 parts by weight of polyester single yarn per 100 parts by weight of Nm 1/60`s, and 50-65 parts by weight of polyester staple fiber and 10-50 parts by weight of viscose rayon single yarn per 100 parts by weight of Ne 40/1`s, with a twist rate of 800±50. In the first paragraph,
The above slope is,
Nm 1/60's (wool/polyester) spun yarn
A high-performance fabric made by twisting Ne 40/1's (viscose rayon/polyester) spun yarn with an appropriate twist count of S800 ± 50 (Twist/Meter). In the first paragraph,
The above slope is,
A highly functional fabric made by twisting 50-60 parts by weight of wool (fineness 20.5μ to 22.5μ) and 40-50 parts by weight of polyethylene terephthalate (PET) per 100 parts by weight of Nm 1/60`s in a 1:1 ratio and 50-65 parts by weight of polyethylene terephthalate (PET) and 35-50 parts by weight of viscose rayon per 100 parts by weight of Ne40/1`s in a 1:1 ratio. In the first paragraph,
The above slope is,
A highly functional fabric, which is made by plying 50-60 parts by weight of wool, 20-30 parts by weight of polyester, and 10-20 parts by weight of zentra for every 100 parts by weight of Nm 1/60`s, and 50-65 parts by weight of polyester and 35-50 parts by weight of viscose rayon for every 100 parts by weight of Ne 40/1`s, with a twist rate of 800±50. In the first paragraph,
The above statement is,
A highly functional fabric made by twisting 40d polyurethane filaments into a core at each slope. In the second paragraph,
A highly functional fabric, wherein the wool is 30 to 35 parts by weight, the polyester is 45 to 60 parts by weight, and the viscose rayon is 15 to 20 parts by weight, based on 100 parts by weight of the total fabric. In the first paragraph,
A highly functional fabric, wherein the polyurethane is contained in an amount of 1 to 5 parts by weight based on 100 parts by weight of the total fabric. A school uniform comprising any one of the functional fabrics of claims 1 to 9.