US20250146195A1

US20250146195A1 - Non-stick warp-knitting elastic fabric

Info

Publication number: US20250146195A1
Application number: US18/730,294
Authority: US
Inventors: Junyan Hu; Changrong CHEN; Mengmeng HAO; Jiayuan Lao
Original assignee: Dongguan Best Pacific Textile Co Ltd
Current assignee: Dongguan Best Pacific Textile Co Ltd
Priority date: 2022-06-07
Filing date: 2022-06-30
Publication date: 2025-05-08
Also published as: EP4538441A1; WO2023236285A1; CN114892333A; JP2025518367A; CN114892333B

Abstract

A non-stick warp-knitted elastic fabric of a warp-knitted structure, comprising at least a low-fluffiness yarn Y1, a high-fluffiness yarn Y2, and an elastic yarn Y3, wherein the low-fluffiness yarn Y1 and the high-fluffiness yarn Y2 are both located on the surface of the fabric and arranged at intervals of each other; the low-fluffiness yarn Y1, via a bar threaded ai-in, bi-out, forms a low-fluffiness structure, while high-fluffiness yarn Y2, via another bar, threaded mj-out, nj-in, forms a high-fluffiness structure; the elastic yarn Y3 forms an elastic structure; and both the low-fluffiness yarn Y1 and the high-fluffiness yarn Y2 form raised areas on the skin-facing surface of the fabric. According to the present application, the fabric of the above structure not only does not stick to the body, but also has properties of good air permeability, quick moisture absorption and drying, and less prone to curling.

Description

TECHNICAL FIELD

This invention relates to a textile fabric, in particular to a non-stick warp-knitted elastic fabric.

BACKGROUND OF THE INVENTION

Highly elastic fabrics have good rebound performance and are usually used as outdoor sports fabrics. Good stretchable fabrics promote the convenience of outdoor activities and conserve, quickly and effectively, the power consumption in muscles during stretching, and the elasticity of the fabric keeps clothing in sync with the rhythm of exercise.
In the prior art, the elastic fabric has a simple structure, insufficient rebound ability, and singular functionality. When wearing in hot weather or exercising, the sweat produced by the human body is not easy to volatilize, which affects the health of the body and cannot sufficiently meet the needs of use.
For example, the Chinese patent application CN209904152 discloses “a breathable high-elastic knitted fabric, including a knitted fabric main body and a second elastic layer, a knitted layer is arranged in the middle of the knitted fabric main body. The upper side of the knitted layer is bonded with a first elastic layer, a first air-permeable layer is arranged above the first elastic layer, and a polyester fiber layer is bonded above the first air-permeable layer. The second elastic layer is adhered to the bottom of the knitted layer, and a second air-permeable layer is arranged under the second elastic layer, and a sweat-absorbing layer is bonded under the second air-permeable layer, and the inside of the second air-permeable layer is woven with breathable mesh layer.” Although the first elastic layer and the second elastic layer of the fabric enhance the elasticity of the main body of the knitted fabric, they are relatively tight and impermeable, and the sweat produced by the human body is not easy to volatilize. In order to improve the air permeability, the air-permeable layer, the polyester fiber layer and the sweat-absorbing layer are bonded to form a laminated fabric. The process is cumbersome, and there is also the problem of the fabric sticking to the body after sweating.
As another example, Chinese patent application CN215970544 discloses “a kind of elastic fabric with good rebound performance. The elastic fabric with good rebound performance includes a base layer, the top of the base layer is provided with a breathable layer, the top of the breathable layer is provided with an elastic layer, the top of the elastic layer is provided with a sterilization layer, the top of the sterilization layer is provided with a protective layer, the interior of the elastic layer is provided with several transverse elastic strips and several longitudinal elastic strips.” Similarly, this fabric is equipped with a breathable layer, a sterilization layer and a protective layer on the basis of the elastic layer, forming a SPACER structure. Although the elasticity of the fabric is improved through the setting of the elastic layer, the multi-layer structure weakens the breathability of the fabric. At the same time, sweat is absorbed via the sterilization layer, it can have a good antibacterial effect and prevent the growth of bacteria, but the moisture of the sweat still stays in the fabric, which makes the fabric sticky to the body, causing uncomfortable wearing and thus failing to meet the use requirements.
Therefore, there is a urgent need for a warp-knitted elastic fabric having good air permeability, good moisture absorption and quick drying, and not prone to curling.

SUMMARY OF THE INVENTION

An object of this invention is to provide a warp-knitted elastic fabric that does not stick to the body, additionally has the properties of good air permeability, good moisture absorption and quick drying, and is not easy to curl.
In order to achieve the above object, the invention provides a non-stick warp knitted elastic fabric, which is of a warp knitted structure, and comprises at least low-fluffiness yarn Y1, high-fluffiness yarn Y2 and elastic yarn Y3, knitted to form the fabric using separate bars with particular lapping plans, and the low-fluffiness yarn Y1 and the high-fluffiness yarn Y2 are located on the surface layer of the fabric and the two are arranged at intervals of each other. Yarn Y1 constitutes a structure of low fluffiness, knitted using a bar threaded using a_ib_ias a base threading unit, wherein 1≤a_i≤50, 1≤b_i≤50, a_irepresenting guides which are threaded with yarns and b_irepresenting guides threaded with no yarns (empty), and the base threading unit a_ib_ifurther forms a repeating unit which comprises at least one (1) base threading unit but no more than ten (10) different base threading units and the repeating unit is repeated to full fabric width. Yarn Y2 constitutes a structure of high fluffiness, knitted using a bar threaded using m_jn_jas a base threading unit, wherein 1≤m_j≤50, 1≤n_j≤50, m_jrepresenting guides threaded with yarns and n_jrepresenting guides not threaded with any yarns (empty), and the base threading unit m_jn_jfurther forms a repeating unit which comprises at least one (1) base threading unit but no more than ten (10) different base threading units and the repeating unit is repeated to full fabric width. Yarn Y3 forms an elastic structure, knitted using a bar fully threaded to full fabric width. Yarn Y1 and yarn Y2 form raised areas on the skin-facing surface of the fabric.
Compared with the prior art, the non-sticky warp-knitted elastic fabric of the present invention includes a warp-knitted structure and includes at least a low-fluffiness yarn Y1, a high-fluffiness yarn Y2, and an elastic yarn Y3 yarn, and the low-fluffiness yarn Y1 and the high-fluffiness yarn Y2 are located on the surface of the fabric and the two are arranged at intervals of each other. As it is known, the higher the moisture content of a smooth surface is, the stronger a tendency to stick to the skin is. This invention takes advantage of the characteristic that the high-fluffiness of yarn Y2 absorbs water faster than the low-fluffiness yarn Y1 and, by combining the two structures of different fluffiness arranged at intervals, the fabric effectively reduces the water absorption by the low-fluffiness yarn Y1 and in turn reduces the skin stickiness of the low-fluffiness yarn Y1 after wetting, thereby making the fabric non-sticky. At the same time, due to yarn Y2's high-fluffiness and low tendency of curling, the contact areas of the fabric with the skin are in forms of points, thereby making the contact area small and further improving the non-stickiness and air permeability of the inventive fabric. Furthermore, the high-fluffiness of yarn Y2 facilitates absorbing water from the skin and then transferring the water to the low-fluffiness yarn Y1 through the capillary effect. The water is thus transferred and diffused, thereby accelerating quick drying. Therefore, the structure of the low fluffiness yarn Y1 and the high fluffiness yarn Y2 arranged at intervals of each other greatly improves the ability of moisture absorption and quick drying, and also greatly reduces the tendency of sticking to the skin, resulting in excellent non-stickiness for the fabric. Additionally, the combination of low-fluffiness yarn Y1, high-fluffiness yarn Y2 and elastic yarn Y3 according to this invention, can simultaneously ensure the elasticity and form microscopic high-low areas and concave-convex spaces which provide more room between yarns, making the air circulation performance better and increasing the breathability of the fabric.
It can be seen that the non-stick warp knitted elastic fabric of the present invention is not only non-sticky, but also has the properties of good air permeability, moisture absorption and fast drying, and is not easy to curl, so that the non-stick warp knitted elastic fabric of the present invention has characteristics of high stretchability, good rebound performance, and free cutting. It feels dry and comfortable and does not stick to the skin, so the skin surface is always dry and comfortable. The technical solution is practical and effective and particularly suitable for making clothes that are in contact with the skin such as underwear, T-shirts, trousers, and shirts. It meets the needs for wearing comfort, functionality, and practicability and has a wide range of applications, good market prospects and economic and social benefits.
Preferably, the raised structural areas of the non-stick warp-knitted elastic fabric of the present invention are in the shape of points or lines. With the dotted or line-shaped raised structure, it not only effectively reduces the stickiness when in contact with the skin, but also makes the air circulation performance better and increases the air permeability of the fabric, making it more comfortable and suitable to wear.
Preferably, the number ratio of the low fluffiness yarn Y1 to the high fluffiness yarn Y2 of the non-stick warp knitted elastic fabric of the present invention is between 1:3-3:1 and the linear density ratio of the low fluffiness yarn Y1 to the high fluffiness yarn Y2 is between 0.5-3.5.
Preferably, the yarn density ratio of the low-fluffiness yarn Y1 to the high-fluffiness yarn Y2 of the non-stick warp-knitted elastic fabric of the present invention is between 0.9-1.2, and the low-fluffiness. The yarn density of yarn Y1 and yarn Y2 is 7-100 denier.
Preferably, When the low-fluffiness yarn Y1 is a FDY yarn, the high-fluffiness yarn Y2 is a DTY yarn or an ATY yarn, and yarn Y3 is an elastic yarn. When the low-fluffiness yarn Y1 is a DTY yarn, the high-fluffiness yarn Y2 is an ATY yarn, and yarn Y3 is an elastic yarn. The fluffiness is specified increased in the order of FDY yarn, DTY yarn and ATY yarn.
Preferably, the low-fluffiness yarn structure and the high-fluffiness yarn structure of the non-stick warp-knitted elastic fabric of the present invention are aligned in the same manner but complementary to each other (i.e., two yarns with the same lapping plan but alternating threading), where a_i=m_jand b_i=n_j.
Preferably, the lapping plans of the yarn Y1 and yarn Y2 of the fabric of the present invention are both 1-0/2-3// or 0-1/2-1// or 1-0/1-2/2-3/2-1//, the lapping plan of the elastic yarn Y3 is 0-2/3-1// or 1-0/1-2// or 1-0/1-2/2-3/2-1//.
Preferably, the yarn Y1, yarn Y2 and elastic yarn Y3 are knitted using separate guide bars, each forming all-open loops, all-closed loops, one-open and one-closed loops, or any combination thereof.
Preferably, the fabric of the present invention has a single-side jacquard or double-side jacquard structure.
Preferably, the back surface of the fabric of the present invention has a suede structure.
Preferably, yarn Y1 of the fabric of the present invention is of a chemical fiber structure and yarn Y2 is of a staple fiber structure.

DESCRIPTION OF DRAWINGS

FIG. 1 is a trend chart of skin adhesion test data of Embodiment 1 and Comparative Example 1.

FIG. 2 is the lapping diagrams for Y1, Y2 and Y3 of Embodiment 1.

FIG. 3 is the lapping diagrams for Y1, Y2 and Y3 of Embodiment 2.

FIG. 4 is the lapping diagrams for Y1, Y2 and Y3 of Embodiment 3.

FIG. 5 is the lapping diagrams for Y1, Y2 and Y3 of Embodiment 4.

FIG. 6 is the lapping diagrams for Y1, Y2 and Y3 of Embodiment 5.

FIG. 7 is the lapping diagrams for Y1, Y2 and Y3 of Embodiment 6.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

The technical solutions of the present invention are described below in connection with specific implementation examples and accompanying drawings, and the technical solutions of the present invention are explained. Understandably, the described embodiments represents only some applications of the invention, not all of them. Based on the embodiments in this application, other varied embodiments that can be obtained by a person of ordinary skill in the art without using creative efforts are all within the scope of the invention. Embodiments of the present application are now described with reference to the drawings, in which like reference numerals represent like elements.
The warp-knitted elastic fabric of the present invention comprises at least a low-fluffiness yarn Y1, a high-fluffiness yarn Y2, and an elastic yarn Y3, where yarn Y1, Y2 and yarn Y3 are knitted using separate bars with particular lapping plans and threaded in a particular manner so that yarn Y1 and yarn Y2 are all located on the surface of the fabric and are arranged at intervals of each other. Yarn Y1 forms a low-fluffiness structure of the fabric, using a guide bar threaded using ab, as a base threading unit, wherein 1≤a_i≤50, 1≤b_i≤50, a_irepresenting guides threaded with yarns and b_irepresenting guides threaded with no yarns (empty); the base threading unit ab, further forms a repeating unit which comprises at least one (1) base threading unit but no more than ten (10) different base threading units and the repeating unit is repeated to full fabric width. Yarn Y2 form a structure of high fluffiness of the fabric, using a bar threaded using min, as a base threading unit, wherein 1≤m_j≤50, 1≤n_j≤50; m_jrepresenting guides threaded with no yarns (empty) and n_jrepresenting guides threaded with yarns; the base threading unit m_jn_jfurther forms a repeating unit which comprises at least one (1) base threading unit but no more than ten (10) different base threading units and is repeated to full fabric width. Yarn Y3 forms an elastic structure, using a bar fully threaded to full fabric width. Yarn Y1 and yarn Y2 form raised areas on a skin-facing surface of the fabric. The non-sticky warp-knitted elastic fabric of the present invention includes a warp-knitted structure and includes at least three different yarns: a low-fluffiness yarn Y1, a high-fluffiness yarn Y2, and an elastic yarn Y3 yarn. The low-fluffiness yarn Y1 and the high-fluffiness yarn Y2 are located on the surface of the fabric and the two are arranged at intervals of each other. As it is known, the higher the moisture content of a smooth surface is, the stronger its tendency to stick to the skin is. This invention takes advantage of the characteristic that the high-fluffiness yarn Y2 absorbs water faster than the low-fluffiness yarn Y1 and, by combining the two structures of different fluffiness arranged at intervals, the fabric effectively reduces the water absorption by the low-fluffiness of yarn Y1 and in turn reduces the skin stickiness of the low-fluffiness yarn Y1 after wetting, thereby making the fabric non-sticky. At the same time, due to yarn Y2's high-fluffiness and low tendency of curling, the fabric contact areas with the skin are in forms of points, thereby making the contact area small and further improving the non-stickiness and air permeability of the inventive fabric. Furthermore, the high-fluffiness of yarn Y2 facilitates absorbing water from the skin and then transferring the water to the low-fluffiness yarn Y1 through the capillary effect. The water is thus transferred and diffused, thereby accelerating quick drying. Therefore, the structure of the low fluffiness yarn Y1 and the high fluffiness yarn Y2 arranged at intervals of each other greatly improves the ability of moisture absorption and quick drying, and also greatly reduces the tendency of sticking to the skin, resulting in excellent non-stickiness for the fabric. Additionally, the combination of low-fluffiness yarn Y1, high-fluffiness yarn Y2 and elastic yarn Y3 according to this invention, can simultaneously ensure the elasticity and form microscopic high-low areas as well as concave-convex spaces which provide more room between yarns, making the air circulation performance better and increasing the breathability of the fabric.
In summary, it can be seen that the non-stick warp-knitted elastic fabric of the present invention is not only non-sticky, but also has the properties of good air permeability, moisture absorption and fast drying, and is less prone to curling, so that the non-stick warp knitted elastic fabric of the present invention has characteristics of high stretchability, good rebound performance, and capable of free cutting. It feels dry and comfortable and does not stick to the skin, so the skin surface is always dry and comfortable. The technical solution is practical and effective and particularly suitable for making clothes that are usually in contact with the skin such as underwear, T-shirts, trousers, and shirts. It meets the needs for wearing comfort, functionality, and practicability and has a wide range of applications, good market prospects and economic and social benefits.
In order to further enhance the non-stickiness and breathability, the raised structural areas of the non-stick warp-knitted elastic fabric of the present invention are in the shape of points or lines. With such dotted or line-shaped raised structure, it not only effectively reduces the stickiness in contact with the skin, but also makes the air circulation performance better, and increases the air permeability of the fabric, making it more comfortable and suitable to wear.
In order to further enhance the non-stickiness, breathability, fast absorption and drying, and curling resistance, the number ratio of the low fluffiness yarn Y1 to the high fluffiness yarn Y2 of the non-stick warp knitted elastic fabric of the present invention is between 1:3-3:1 and the linear density ratio of the low fluffiness yarn Y1 to the high fluffiness yarn Y2 is between 0.5-3.5. More specifically, the linear density ratio of the low-fluffiness yarn Y1 to the high-fluffiness yarn Y2 of the non-stick warp-knitted elastic fabric of the present invention is between 0.9-1.2. The linear density of yarn Y1 and yarn Y2 is 7-100 denier.
Preferably, the low-fluffiness yarn Y1 is a FDY yarn, the high-fluffiness yarn Y2 is a DTY yarn, and yarn Y3 is an elastic yarn. The fluffiness of the FDY yarn is lower than that of the DTY yarn. The fabric of the invention has a warp knitted fabric structure where the high fluffiness yarns (DTY yarns) and low fluffiness yarns (FDY yarns) are arranged at intervals of each other. The higher water content and smoother of the fabric surface is, the stronger its tendency to stick to the skin is. The water absorption of DTY yarn is faster than that of FDY yarns, which reduces the water content of FDY yarn, thereby reducing the moisture content of FDY yarns and thus lowering its stickiness to the skin after wetting. The fluffiness and curling tendency of DTY yarns make them contact with the skin in forms of points, with small contact areas. The DTY yarn absorbs water from the skin, and guides it to the FDY yarn through the capillary effect, so that the water is transferred and diffused to facilitate drying. Therefore, the structure of alternate arrangement of FDY yarns with DTY yarns is conducive to moisture absorption, quick drying and stickiness reduction. Furthermore, the FDY yarns and DTY yarns form microscopic high-low areas as well as concave-convex spaces which provide more room between yarns, making the air circulation performance better and increasing the breathability of the fabric. More specifically, the low-fluffiness yarn structure and the high-fluffiness yarn structure of the non-stick warp-knitted elastic fabric of the present invention are aligned in the same manner but complementary to each other, where a_i=m_jand b_i=n_j. Here, FDY is the abbreviation of “Fully Drawn Yarn”; DTY is the abbreviation of “Draw Texturing Yarn”; ATY is the abbreviation of “Air Textured Yarn”. Preferably, the lapping plans of the yarn Y1 and yarn Y2 of the fabric of the present invention are both 1-0/2-3// or 0-1/2-1// or 1-0/1-2/2-3/2-1//, the lapping plan of the elastic yarn Y3 is 0-2/3-1// or 1-0/1-2// or 1-0/1-2/2-3/2-1//.
Preferably, the yarn Y1, yarn Y2 and elastic yarn Y3 are knitted using separate guide bars, each running in a manner that form all-open loops, all-closed loops, one-open and one-closed loops, or any combination thereof.
Preferably, the fabric of the present invention has a single-side jacquard or double-side jacquard structure.
Preferably, the back surface of the fabric of the present invention has a suede structure. The fleece effect is created by the suede structure, thereby improving the touch of the fabric of the present invention. The suede structure can be obtained through a conventional suede treatment process.
Preferably, the low-fluffiness yarn Y1 of the fabric of the present invention is a chemical fiber yarn and the high-fluffiness yarn Y2 is a spun yarn.
In order to further describe the invention in detail and understand its implementation, the low-fluffiness yarn Y1, the high-fluffiness yarn Y2, and the elastic yarn Y3 are replaced by symbols known to those skilled in the art, that is, low-fluffiness yarn Y1 is represented by yarn Y1, high-fluffiness yarn Y2 is represented by yarn Y2, and elastic yarn Y3 is represented by yarn Y3. Additionally, in the following, PA6 refers to nylon 6; FD is the abbreviation of “Full Dull”; PU is the abbreviation of “polyurethane”.
In connection with FIG. 1 -FIG. 7 as well as Table 1 and Table 2, further detailed descriptions of the fabric of the present invention are given:

- Embodiment 1: Using a 40-needle warp knitting machine, a_i=m_j=1 and b_i=n_j=1, yarn Y1 is PA6 25/34 FD FDY yarn, guided by a bar threaded one-in, one-out; yarn Y2 is PA6 25/34 FD DTY yarn, guided by a bar threaded one-out, one-in. The lapping plan is 1-0/2-3// for both yarn Y1 and yarn Y2, and the runner length is 1220 mm/Rack. Yarn Y3 is made of PU 20D, the beam stretch ratio is 100%, the lapping plan is 0-2/3-1// with a bar threaded full, and the runner length is 1300 mm/Rack. After washing-ordering-dyeing-finishing, the finished product has a specification of 170 cm*130 g/m².
- Comparative Example 1: Using a 40-needle warp knitting machine, the yarn is PA6 25/34 FD FDY yarn, guided by a bar threaded full, the lapping plan is 1-0/2-3//, and the runner length is 1220 mm/Rack. The elastic yarn is PU 20D, the beam stretch ratio is 100%, lapping plan is 0-2/3-1//, guided by a bar threaded full, and the runner length is 1300 mm/Rack. After washing-ordering-dyeing-finishing, the finished product has a specification of 160 cm*150 g/m².
- Comparative Example 2: Using a 40-needle warp knitting machine, the yarn is PA6 25/34 FD DTY yarn, guided by a bar threaded full, the lapping plan is 1-0/2-3//, and the runner length is 1220 mm/Rack. The elastic yarn is PU 20D, the beam stretch ratio is 100%, the lapping plan is 0-2/3-1//, guided by a bar threaded full, and the runner length is 1300 mm/Rack. After washing-ordering-dyeing-finishing, the finished product has a specification of 160 cm*145 g/m².

The above prepared fabrics are subjected to the same post-treatment of moisture absorption and quick drying, and then the fabrics are tested for moisture absorption and quick drying, one-way moisture transfer, air permeability, and skin adhesion (stickiness).
Sampling: In this experiment, from the 50-yard cloth roll, take the front, middle and back three sections, 0.5 yards each, and take 4 copies for each section, used for moisture absorption and quick-drying test, one-way moisture transfer test, air permeability test, and skin stickiness test, respectively.
Moisture absorption and quick-drying test: Using the JIS L1907 method, conduct moisture absorption and quick-drying tests on the 3 section samples of each fabric and calculate the average value of the moisture absorption and quick-drying values of the 3 section samples as the final value.
Air permeability test: Using JIS L 1096 Method A, conduct the air permeability test on the left, middle and right part of each 3 section samples of each fabric, and calculate the average value as the result of the air permeability of each section sample. The average value of the 3 section sample results is then calculated as the final air permeability value for the fabric.
One-way moisture transfer test: AATCC 195 “Liquid Moisture Management Properties of Textile Fabrics” is tested. The OWTC (one way transport capability) test is carried out on the 3 section samples of each fabric, and the average value of the 3 section samples is calculated as the OWTC value of the fabric.

	TABLE 1

	Fabrics

moisture absorption(s)

quick-drying(%)

one-way moisture transfer

unit		after		after			after
wt.	before	wash 10	before	wash 10	Permeability	before	wash 5
(g/m²)	wash	times	wash	times	(cm²/cm²/s)	wash	times

embodiment

1	130	<1S	<1S	1%	3%	55	89.2	90.6
comparative 1	150	<1S	<1S	1%	2%	38	59.6	87.1
comparative 2	145	<1S	<1S	3%	5%	30	87.4	125.6

As shown in Table 1, the three fabrics underwent the same moisture absorption and quick-drying treatment all have good moisture absorption. As for quick-drying, FDY is slightly better than DTY. The fabrics of Embodiment 1 and Comparative Example 2 have good moisture absorption and quick-drying. For one-way moisture transfer performance, Comparative Example 2 performed best, so it can be seen that the one-way moisture transfer performance of DTY yarn is better than that of FDY yarn. In terms of air permeability, Embodiment 1 performed better. All considered, the fabric of Embodiment 1 is excellent in terms of moisture absorption, quick drying and air permeability.
The skin adhesion test:

- Experimental equipment: Zwick tensile machine, 5N sensor, friction coefficient meter, friction block (2×2 cm smooth copper block having no edges and corners, the contact surface is not covered).
- Test sample: Longitudinal (L) & Weft (W): 8×12 cm, both ends in the 12 cm direction are folded 1 cm inward and then sewed, so that the effective distance in the middle is 8 cm, that is, the area is 8×8 cm.

Test Conditions

- Water drop volume: 0.2 mL (Drip the water to the center of the sample to make it diffuse, allow 30s of total diffusing time, then start timing at 0 min, and then test every 5 min.)
- Estimated tension: 0.1 N
- Pre-tension speed: 50 mm/min
- Tensile speed: 200 mm/min
- Tensile displacement: 60 mm
- Operation: Straighten a sewing thread (try to ensure no tension applied), fix it on the friction coefficient meter. For the dry state test, test it directly, and for the wet state test, test it after dripping water (timing). The friction block starts to slide from the edge of the 8×8 cm sample, and the value is taken when the sliding distance is 30 mm, 40 mm, and 50 mm.

This experiment simulates the water environment between the skin and the clothing after the human body sweats, and uses the friction force measured in the wet state to characterize the skin-sticking force between the skin and the fabric after sweating. The skin-sticking force f: f=f_L+f_w, wherein f_Lis warp friction, and f_wis weft friction. This experiment mainly focuses on the friction of the back side (skin-facing surface). The test data in a dry state and in a wet state after wetting 0 min, 5 min, 10 min, 15 min, 20 min, 25 min, and 30 min were recorded in Table 2.

	TABLE 2

	Embodiment 1	Comparative example 1

	30 mm	40 mm	50 mm	30 mm	40 mm	50 mm
Fabric	Friction	Friction	Friction	Friction	Friction	Friction

Fabric Side	Fabric	Fabric	force	force	force	force	force	force
Contact Water	Direction	Condition	(N)	(N)	(N)	(N)	(N)	(N)

Back	f_L	Dry	0.110	0.105	0.114	0.150	0.170	0.191
Side	f_L	Wet - 0 min	0.175	0.175	0.181	0.175	0.191	0.192
	f_L	Wet - 5 min	0.204	0.200	0.207	0.181	0.190	0.197
	f_L	Wet - 10 min	0.189	0.190	0.188	0.170	0.182	0.185
	f_L	Wet - 15 min	0.177	0.183	0.170	0.121	0.132	0.131
	f_L	Wet - 20 min	0.175	0.171	0.170	0.139	0.144	0.147
	f_L	Wet - 25 min	0.150	0.145	0.149	0.143	0.147	0.149
	f_L	Wet - 30 min	0.143	0.144	0.148	0.131	0.139	0.140
Back	f_w	Dry	0.101	0.103	0.111	0.097	0.102	0.108
Side	f_w	Wet - 0 min	0.120	0.123	0.133	0.179	0.184	0.194
	f_w	Wet - 5 min	0.102	0.108	0.113	0.158	0.160	0.167
	f_w	Wet - 10 min	0.101	0.104	0.112	0.141	0.138	0.148
	f_w	Wet - 15 min	0.100	0.100	0.105	0.138	0.138	0.148
	f_w	Wet - 20 min	0.086	0.095	0.097	0.120	0.117	0.121
	f_w	Wet - 25 min	0.084	0.100	0.101	0.114	0.116	0.121
	f_w	Wet - 30 min	0.089	0.090	0.092	0.113	0.111	0.115
Back	f	Dry	0.211	0.206	0.225	0.247	0.272	0.297
Side	f	Wet - 0 min	0.295	0.298	0.314	0.354	0.375	0.386
	f	Wet - 5 min	0.306	0.308	0.320	0.339	0.350	0.364
	f	Wet - 10 min	0.290	0.294	0.300	0.311	0.320	0.331
	f	Wet - 15 min	0.277	0.283	0.275	0.259	0.270	0.277
	f	Wet - 20 min	0.261	0.268	0.267	0.259	0.261	0.268
	f	Wet - 25 min	0.244	0.245	0.250	0.257	0.263	0.270
	f	Wet - 30 min	0.232	0.234	0.240	0.244	0.250	0.255

For the convenience of observation and analysis, the test data at 30 minute and the 50 mm position in Table 2 is plotted in a trend graph, as shown in FIG. 1 .
It can be seen from FIG. 1 that after dripping water, the skin-sticking force suddenly increases. As the water slowly penetrates and diffuses from the skin-facing surface to the other side, the skin-sticking force on the skin-facing surface gradually decreases until it is completely dry and returns to the initial state, i.e., the state of minimum stickiness. Within 30 minutes after dripping water, the stickiness of Embodiment 1 is lower than that of Comparative Example 1, so Embodiment 1 has smaller skin sticking force and better non-sticking effect in the wet state.
In sum, it can be seen that the fabric of Embodiment 1 performs well when tested for moisture absorption and quick drying, air permeability, one-way moisture transfer performance, and skin adhesion performance. Embodiment 1 has excellent performance in all aspects, and has good moisture absorption and quick drying, breathable and non-sticky effects.

- Embodiment 2: shown in FIG. 3 , a_i=m_j=1 and b_i=n_j=1; yarn Y1 is FDY yarn, threaded one-in, one-out; yarn Y2 is DTY yarn, threaded one-out, one-in; yarn Y1 and yarn Y2 have the same but complementary bar alignment, with the same lapping plan of 1-0/2-3//; yarn Y3 is spandex, threaded full, lapping plan is 1-0/1-2//.
- Embodiment 3: shown in FIG. 4 , yarn Y1 is FDY yarn, threaded one-in, one-out; yarn Y2 is DTY yarn, threaded one-out, one-in; yarn Y1 and yarn Y2 have the same but complementary bar alignment, with the same lapping plan of 0-1/2-1//; yarn Y3 is spandex, threaded full, lapping plan is 1-0/1-2//.
- Embodiment 4: shown in FIG. 5 , yarn Y1 is FDY yarn, threaded one-in, one-out; yarn Y2 is DTY yarn, threaded one-out, one-in; yarn Y1 and yarn Y2 have the same but complementary bar alignment, with the same lapping plan of 1-0/1-2/2-3/2-1//; yarn Y3 is spandex, threaded full, lapping plan is 1-0/1-2/2-3/2-1//.
- Embodiment 5: shown in FIG. 6 , a_i=m_j=1 and b_i=n_j=2, yarn Y1 is FDY yarn, threaded one-in, two-out; yarn Y2 is DTY yarn, threaded one-out, two-in; yarn Y1 and yarn Y2 have the same but complementary bar alignment, with the same lapping plan of 1-0/2-3//; yarn Y3 is spandex, threaded full, lapping plan is 0-2/3-1//.
- Embodiment 6: shown in FIG. 7 , a_i=m_j=2 and b_i=n_j=3, yarn Y1 is FDY yarn, threaded two-in, three-out; yarn Y2 is DTY yarn, threaded two-out, three-in; yarn Y1 and yarn Y2 have the same but complementary bar alignment, with the same lapping plan of 1-0/2-3//; yarn Y3 is spandex, threaded full, lapping plan is 0-2/3-1//.
- Embodiment 7: On the basis of Embodiment 3, the yarn Y1 is replaced by a chemical fiber yarn, threaded one-in, one-out; the yarn Y2 is replaced by a staple fiber yarn (spun yarn), threaded one-out, one-in; yarn Y1 and yarn Y2 have the same but complementary bar alignment, with the same lapping plan of 0-1/2-1//; yarn Y3 is spandex, threaded full, lapping plan is 1-0/1-2// (the structure is the same as embodiment 3). By taking advantage of the fact that the spun yarn has more fibers and more pores between the fibers so that the water absorption of the Y2 spun yarn is faster than that of the Y1 chemical fibers, and combined with the structure of the two arranged at intervals, the water content of the chemical fiber yarn Y1 is effectively reduced, thereby reducing the skin-stickiness of chemical fiber yarn Y1 after wetting. At the same time, the short fibers of Y2 absorbs water from the skin, and transfers the water to the chemical fibers of Y1 through the capillary effect, and the water is transferred and diffused, thereby accelerating the quick drying. Moreover, when short fibers of Y2 and chemical fibers of Y1 are side by side or interwoven, the degree of “hugging and tightness” is not as close as that of chemical fiber-chemical fiber, so that the fabric has more pores between yarns, which makes the air circulation performance better and increases the breathability of the fabric.
- Embodiment 8: On the basis of Embodiment 6, the yarn Y1 is replaced by chemical fiber yarn, threaded two-in, three-out; the yarn Y2 is replaced by a staple fiber yarn (spun yarn), threaded two-out, three-in; yarn Y1 and yarn Y2 have the same but complementary bar alignment, with the same lapping plan of 1-0/2-3//; yarn Y3 is spandex, threaded full, lapping plan is 0-2/3-1// (the structure is identical with embodiment 6).

Yarn Y3 of the present invention is preferably spandex or polyolefin.
The knitting processes used in the present invention are all prior art and so are the materials involved in this invention. Therefore, they are not hereby described in detail.
It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and not restrictive in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, equivalent modifications made to the various respects of the present invention still fall within the scope of the invention.

Claims

1. A non-stick warp-knitted elastic fabric, comprising at least a low-fluffiness yarn Y1, a high-fluffiness yarn Y2 and an elastic yarn Y3, (at least have 3 yarns where Y2 has higher fluffiness than Y1 and Y3 is an elastic yarn) warp knitted to form the fabric via separate guide bars with a lapping plan so that yarn Y1 and yarn Y2 can both located on a surface of the fabric and arranged at intervals of each other; wherein

yarn Y1 constitutes a structure of low fluffiness, knitted using a bar threaded using a_ib_ias a base threading unit, wherein 1≤a_i≤50, 1≤b_i≤50, Where a_iis the number of guide needles in a guide bar threading yarns in (and b_iis the number of guide needles in a guide bar not threading yarns in; the base threading unit a_ib_ifurther forms a repeating unit which comprises at least one (1) base threading unit but no more than ten (10) different base threading units and the repeating unit will be repeated till full fabric width;

yarn Y2 constitutes a structure of high fluffiness, knitted using a bar threaded using m_in_jas a base threading unit, wherein 1≤m_j≤50, 1≤n_j≤50; Where m_jis the number of guide needles in a guide bar threading yarns in and n_jis the number of guide needles in a guide bar not threading yarns in; the base threading unit m_in_jfurther forms a repeating unit which comprises at least one (1) base threading unit but no more than ten (10) different base threading units and the repeating unit will be repeated till full fabric width;

yarn Y3 forms an elastic structure, knitted using a guide bar fully threaded to full fabric width; and

both yarn Y1 and yarn Y2 formed raised areas on the next to skin surface of the fabric.

2. The non-stick warp knitted elastic fabric according to claim 1, characterized in that the raised areas are in forms of dots or lines.

3. The non-stick warp knitted elastic fabric according to claim 1, characterized in that ratio of yarn number of yarn Y1 to yarn Y2 is 1:3-3:1, and ration of linear density of yarn Y1 to yarn Y2 is between 0.5-3.5.

4. The non-stick warp knitted elastic fabric according to claim 1 or 3, characterized in that linear density ratio of yarn Y1 to yarn Y2 is between 0.9-1.2, and linear density of yarn Y1 or yarn Y2 is 7-100 denier.

5. The non-stick warp knitted elastic fabric according to claim 1, characterized in that if yarn Y1 is an FDY yarn, yarn Y2 is a DTY yarn or an ATY yarn, and yarn Y3 is an elastic yarnif yarn Y1 is a DTY yarn, yarn Y2 is an ATY yarn, and yarn Y3 is an elastic yarn, and yarn fluffiness is specified increased in the order of FDY yarn, DTY yarn and ATY yarn.

6. The non-stick warp knitted elastic fabric according to claim 1, characterized in that the structure of low fluffiness and the structure of high fluffiness are aligned complementary to each other, where a_i=m_jand b_i=n_j.

7. The non-stick warp knitted elastic fabric according to claim 1 or 6, characterized in that lapping plans of yarn Y1 and yarn Y2 are both 1-0/2-3// or 0-1/2-1// or 1-0/1-2/2-3/2-1//, and the lapping plan of yarn Y3 is 0-2/3-1// or 1-0/1-2// or 1-0/1-2/2-3/2-1//.

8. The non-stick warp knitted elastic fabric according to claim 1, characterized in that yarn Y1, yarn Y2 and yarn Y3 each form all open loops, all closed loops, one-open and one-closed loops, or any combination thereof.

9. The non-stick warp knitted elastic fabric according to claim 1, wherein the fabric has a single-side jacquard or double-side jacquard structure.

10. The non-stick warp knitted elastic fabric according to claim 1, characterized in that a back surface of the fabric has a suede structure.

11. The non-stick warp knitted elastic fabric according to claims 1-10, characterized in that yarn Y1 is of filament fibers; Y2 is of staple fibers.