Breathable sun protection fabric and method of making the same

Abstract

The application relates to a breathable sunscreen fabric and a preparation method thereof, and belongs to the technical field of textile fabrics. The breathable sunscreen fabric comprises a plurality of fabric subunits and a convex unit. The plurality of fabric subunits are connected and arranged along a first direction, the plurality of fabric subunits are connected and arranged along a second direction, the convex unit comprises a first convex part and a second convex part, the first convex part and the second convex part both extend along a third direction, and the first direction, the second direction and the third direction intersect with each other. The breathable sunscreen fabric provided by the application has the properties of softness, comfort, breathability and sun protection, and can meet the requirements of various human body action stretching and wearing comfort performance of clothes.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textile fabric, and particularly relates to a breathable sunscreen fabric and a preparation method thereof. BACKGROUND

[0002] In recent years, with the development of science and technology and the improvement of people's living standards, people's demand for clothing is not only to cover the body and keep warm, but also to have certain protection function. With the development of industry, the destruction of the ozone layer and the increase of ultraviolet transmittance, clothing as a kind of daily wearing fabric can effectively block ultraviolet rays outside the human body, so the anti-ultraviolet clothing fabric is more and more concerned. Traditional textiles lack the ability to resist ultraviolet rays, so functional textiles have important significance. Sun-protective clothing can protect the human body, and warp-knitted, weft-knitted and woven fabrics have been applied to the field of sunscreen fabric. The existing sunscreen fabric has the effect of adding sunscreen coating or film in the production process. These coatings usually contain ultraviolet absorbers or reflectors, thereby improving the sunscreen performance. But this coating or film will be damaged after washing or rubbing, affecting the anti-ultraviolet effect of the fabric. And the breathability is very poor, and when the sweat is serious, it will also cause pore blockage and skin inflammation. If you want to have good fabric breathability, the structure will be loose, and the porosity of the fabric will increase, but the transmittance of the anti-ultraviolet will also increase.

[0003] The existing fabric can reduce the penetration of ultraviolet rays by selecting finer yarns to make the fabric more compact. This achieves the anti-ultraviolet effect of the fabric, but due to the tightness of the fabric, the fabric is relatively stiff, and the air permeability and elasticity are not good, which cannot provide a good clothing experience. CN2021203356140 discloses a cotton spandex high-elasticity knitted fabric: a knitted fabric including a cotton spandex knitted layer, a sunscreen outer layer, a comfort layer, and an inner layer, the cotton spandex knitted layer includes cotton warp and spandex weft, and the knitting method is as follows: adjacent spandex weft is located above and below the same cotton warp, and adjacent cotton warp is located above and below the same spandex weft. The sunscreen outer layer insulates ultraviolet rays, and the various layer structures have different functions, and the multi-layer structure achieves the effects of sun protection, moisture absorption, and wearing comfort. However, the layer structure is complex, the air permeability and extensibility are poor, and the wearing experience is affected. CN212372837U discloses a sun-proof clothing fabric with good air permeability: the sun-proof clothing fabric includes a skin-friendly cotton layer, an anti-radiation air-permeable layer, and a honeycomb fiber layer, the honeycomb fiber layer is arranged between the anti-radiation air-permeable layer and the skin-friendly cotton layer, the skin-friendly cotton layer is fixedly connected with a wear-resistant fiber layer on the side close to the honeycomb fiber layer, the wear-resistant fiber layer and the honeycomb fiber layer are fixedly connected with a first elastic fiber layer, and the honeycomb fiber layer and the anti-radiation air-permeable layer are fixedly connected with a second elastic fiber layer; the anti-radiation air-permeable layer includes a first anti-radiation layer, a heat-resistant layer, and a second anti-radiation layer, the heat-resistant layer is fixedly connected between the first anti-radiation layer and the second anti-radiation layer, and the second anti-radiation layer is fixedly connected with the second elastic fiber layer. Although the sun-proof clothing fabric has good air permeability, the structure is complex, the production requirements are high, and it is not suitable for process application. SUMMARY

[0004] In view of the above, in order to overcome some or all of the defects of the prior art, the present application provides a breathable sunscreen fabric and a preparation method thereof, which partially or completely solves the technical problem that the existing knitted fabric on the market cannot simultaneously ensure air permeability and sunscreen function. Accordingly, the technical solution adopted by the present application is as follows:

[0005] In a first aspect, the present application provides a breathable sunscreen fabric, comprising: a plurality of fabric sub-units, a protruding unit, the plurality of fabric sub-units are connected and arranged along a first direction, the plurality of fabric sub-units are connected and arranged along a second direction, the protruding unit includes a first protruding part and a second protruding part, the first protruding part and the second protruding part extend along a third direction, and the first direction, the second direction and the third direction intersect with each other.

[0006] Optionally, the fabric subunit comprises a first wire part, a second wire part, a third wire part, and a fourth wire part, the first wire part and the second wire part are intertwined, the first wire part and the third wire part are intertwined, the second wire part and the third wire part are intertwined, the first wire part and the fourth wire part are intertwined, and the third wire part and the fourth wire part are intertwined.

[0007] Optionally, the first wire part comprises a first loop forming position one, a first tuck position, a first float position, and a second loop forming position in sequence; the second wire part comprises a second tuck position, a second float position, a second loop forming position one, and a second loop forming position two in sequence; the third wire part comprises a third float position, a third loop forming position one, a third loop forming position two, and a third tuck position in sequence; and the fourth wire part comprises a fourth loop forming position one, a fourth loop forming position two, a fourth tuck position, and a fourth float position in sequence.

[0008] Optionally, in a plane formed in the first direction and the second direction, the first tuck position and the second tuck position form a first connecting line, the first float position, the second float position, and the third float position form a second connecting line, the second loop forming position one, the third loop forming position one, the third loop forming position one, and the fourth loop forming position two form a third connecting line, the third loop forming position, the second loop forming position two, and the fourth loop forming position two form a fourth connecting line, and the third tuck position and the fourth tuck position form a fifth connecting line, and at least two of the first connecting line, the second connecting line, the third connecting line, the fourth connecting line, and the fifth connecting line are parallel to each other.

[0009] Optionally, the first wire part, the second wire part, the second wire part, and the third wire part are at least one of a lusterless yarn wire and a sunscreen yarn wire.

[0010] Optionally, the breathable sunscreen fabric comprises a unit area design vertical mapping total area Sz, a unit area shrinkage vertical mapping area S, and a porosity P, and the unit area design vertical mapping total area Sz and the porosity P are respectively:

[0011] Sz=a(dc*w)*b*[dw*(2d+h)]

[0012] P=(Sz-S) / Sz

[0013] wherein dc is the number of horizontal loop forming positions, tuck positions, and float positions per unit length (1 cm) of the breathable sunscreen fabric, dw is the number of vertical loop forming positions, tuck positions, and float positions per unit length (1 cm) of the breathable sunscreen fabric, w is the loop forming width of one loop forming position, the first wire part, the second wire part, the third wire part, and the fourth wire part use the same wire, d is the wire diameter, h is the loop column of the loop forming position, a is the horizontal shrinkage coefficient of the breathable sunscreen fabric, and b is the vertical shrinkage coefficient of the breathable sunscreen fabric.

[0014] In a second aspect, the present application provides a breathable sun protection fabric, for preparing the breathable sun protection fabric of any one of the above first aspect, comprising the following steps:

[0015] Step S100: preparing a fabric subunit;

[0016] Step S200: connecting and arranging the plurality of fabric subunits in the first direction, and connecting and arranging the plurality of fabric subunits in the second direction, to prepare the breathable sun protection fabric.

[0017] Optionally, step S100 comprises the following steps:

[0018] Step S101: sequentially forming a first loop forming position one, a first tuck position, a first float position, a first loop forming position two in the first wire part; the first wire part and the second wire part are intertwined, and the second wire part sequentially forms a second tuck position, a second float position, a second loop forming position one, a second loop forming position two;

[0019] Step S102: the first wire part and the third wire part are intertwined, the second wire part and the third wire part are intertwined, and the third wire part sequentially forms a third float position, a third loop forming position, a third loop forming position two, and a third tuck position; the first wire part and the fourth wire part are intertwined, the third wire part and the fourth wire part are intertwined; and the fourth wire part sequentially forms a fourth loop forming position one, a fourth loop forming position two, a fourth tuck position, and a fourth float position.

[0020] Optionally, in the plane formed by the first direction and the second direction, the first tuck position and the second tuck position form a first connecting line, the first float position, the second float position, and the third float position form a second connecting line, the first loop forming position two, the second loop forming position one, the third loop forming position one, and the third loop forming position one form a third connecting line, the fourth loop forming position two, the third loop forming position, and the second loop forming position two form a fourth connecting line, the third tuck position and the fourth tuck position form a fifth connecting line, and at least two of the first connecting line, the second connecting line, the third connecting line, the fourth connecting line, and the fifth connecting line are parallel to each other.

[0021] The present application has the following beneficial effects:

[0022] (1) In the present application, the fabric subunit includes a first wire part, a second wire part, a third wire part, and a fourth wire part, each of which includes two loop positions, one tuck position, and one float position. The first tuck position and the second tuck position form a first continuous line, the first float position, the second float position, and the third float position form a second continuous line, the second loop position one, the third loop position one, and the third loop position one form a third continuous line, the fourth loop position two, the third loop position, and the second loop position two form a fourth continuous line, and the third tuck position and the fourth tuck position form a fifth continuous line. At least two of the first continuous line, the second continuous line, the third continuous line, the fourth continuous line, and the fifth continuous line are parallel to each other. In this way, by arranging the positions of the two loop positions, the float position, and the tuck position, the breathable sunscreen fabric forms diagonal stripes, which not only increases the thickness of the breathable sunscreen fabric, but also forms a concave-convex effect on the surface of the breathable sunscreen fabric, which expands the contact area between the fabric and the air, facilitates the contact of moisture with air, and thus achieves the purpose of rapid moisture removal from the fabric, enhancing the breathable and moisture-wicking properties of the fabric.

[0023] (3) In the present application, the front surface of the breathable sunscreen fabric is in a plain weave structure, which is relatively flat and helps to absorb water, but does not stick to the skin. The structure of the breathable sunscreen fabric is compact and stable, crisp, with small longitudinal and transverse extensions, good anti-pilling properties, good elasticity, and wearing comfort. The matte yarn provides a cool feeling when worn. Moreover, the breathable sunscreen fabric also has softness, comfort, breathability, and sun protection properties, and can meet the various human motion stretching and wearing comfort performance requirements of clothing. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the breathable sunscreen fabric structure of the present application Figure 1 ;

[0025] Figure 2 is a schematic diagram of the breathable sunscreen fabric structure of the present application Figure 2 ;

[0026] Figure 3 is a schematic diagram of the breathable sunscreen fabric structure of the present application Figure 3 ;

[0027] Figure 4 is a schematic diagram of the breathable sunscreen fabric structure of the present application

[0028] Figure 5 is a schematic diagram of the fabric subunit structure arrangement of the present application

[0029] Figure 6 is a schematic diagram of the loop column, loop width, and wire part diameter of the present application

[0030] Figure 7 is a schematic diagram of a preparation method of a breathable sun protection fabric of the present application;

[0031] Reference signs:

[0032] Breathable sun protection fabric-B; fabric subunit-10; first wire part-100; second wire part-200; third wire part-300; fourth wire part-400; first protrusion unit-501; second protrusion unit-502. DETAILED DESCRIPTION

[0033] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in detail to avoid obscuring aspects of the present application.

[0034] Reference Figure 1-Figure 5 As shown in the first aspect, the present application provides a breathable sun protection fabric B, comprising: a plurality of fabric subunits 10, a protrusion unit, the plurality of fabric subunits 10 are connected and arranged along a first direction, the plurality of fabric subunits 10 are connected and arranged along a second direction, the protrusion unit comprises a first protrusion part 501 and a second protrusion part 502, the first protrusion part 501 and the second protrusion part 502 both extend along a third direction, and the first direction, the second direction and the third direction intersect with each other.

[0035] In the present application, the plurality of fabric subunits 10 are connected and arranged along the first direction, and the plurality of fabric subunits 10 are connected and arranged along the second direction, so that the plurality of fabric subunits 10 can form the breathable sun protection fabric B; at the same time, in the breathable sun protection fabric B, the first protrusion part 501 and the second protrusion part 502 of the protrusion unit both extend along the third direction, so that the first protrusion part 501 and the second protrusion part 502 of the same or different heights are formed along the third direction, and the air permeability of the fabric can be adjusted or increased.

[0036] In the present application, the first direction, the second direction and the third direction intersect with each other, for example, the first direction can be the X direction, the second direction can be the Y direction, and the third direction can be the Z direction, the first direction X and the second direction Y intersect at 90 degrees, the second direction X and the third direction Z intersect at 90 degrees, and the first direction X and the third direction Z intersect at 90 degrees. Of course, the first direction and the second direction can also intersect at other numerical angles, the second direction and the third direction can also intersect at other numerical angles, and the first direction and the third direction can also intersect at other numerical angles.

[0037] Optionally, the fabric subunit 10 comprises a first wire part 100, a second wire part 200, a third wire part 300, and a fourth wire part 400, the first wire part 100 and the second wire part 200 are intertwined with each other, the first wire part 100 and the third wire part 300 are intertwined with each other, the second wire part 200 and the third wire part 300 are intertwined with each other, the first wire part 100 and the fourth wire part 400 are intertwined with each other, and the third wire part 300 and the fourth wire part 400 are intertwined with each other.

[0038] In the present application, in the fabric subunit 10, the first wire part 100 and the second wire part 200 are intertwined with each other, the first wire part 100 and the third wire part 300 are intertwined with each other, the second wire part 200 and the third wire part 300 are intertwined with each other, the first wire part 100 and the fourth wire part 400 are intertwined with each other, and the third wire part 300 and the fourth wire part 400 are intertwined with each other. In this way, through the intertwining relationship between the first wire part 100, the second wire part 200, the third wire part 300, and the fourth wire part 400, the fabric subunit 10 can be formed by simple knitting arrangement, and it is also convenient to use a four-needle circular weft knitting machine to prepare the fabric subunit 10 in the actual fabric production process.

[0039] Optionally, the first wire part 100 comprises a first loop forming position one 1011, a first tuck position 102, a first float position 103, and a first loop forming position two 1012 in sequence; the second wire part 200 comprises a second tuck position 201, a second float position 202, a second loop forming position one 2031, and a second loop forming position two 2032 in sequence; the third wire part 300 comprises a third float position 301, a third loop forming position one 3021, a third loop forming position two 3022, and a third tuck position 303 in sequence; and the fourth wire part 400 comprises a fourth loop forming position one 4011, a fourth loop forming position two 4012, a fourth tuck position 402, and a fourth float position 403 in sequence.

[0040] In the application, along the first direction, the first wire part 100 comprises a first looping position one 1011, a first tuck position 102, a first float position 103, a first looping position two 1012 in sequence; the second wire part 200 comprises a second tuck position 201, a second float position 202, a second looping position one 2031, a second looping position two 2032 in sequence; the third wire part 300 comprises a third float position 301, a third looping position one 3021, a third looping position two 3022, a third tuck position 303 in sequence; the fourth wire part 400 comprises a fourth looping position one 4011, a fourth looping position two 4012, a fourth tuck position 402, a fourth float position 403 in sequence. In this way, the first wire part 100, the second wire part 200, the third wire part 300 and the fourth wire part 400 all comprise two looping positions, one tuck position and one float position. The existence of the looping position, the tuck position and the float position in the breathable sun protection fabric B can make the surface of the fabric have a concave-convex surface, so that the cloth surface presents an uneven fabric effect, and the refraction and reflectivity of ultraviolet light are better, so that the anti-ultraviolet performance of the breathable sun protection fabric B is stronger.

[0041] In the application, the positions of the two looping positions, the tuck position and the float position are arranged differently along the first direction, so that the breathable sun protection fabric B can form a first protruding part 501 and a second protruding part 502. Adjusting the position arrangement of the two looping positions, the tuck position and the float position can adjust or increase the air permeability of the fabric.

[0042] Optionally, in the plane formed in the first direction and the second direction, the first tuck position 102 and the second tuck position 201 form a first connecting line L1, the first float position 103, the second float position 202 and the third float position 301 form a second connecting line L2, the first looping position two 1012, the second looping position one 2031, the third looping position one 3021 and the fourth looping position one 4011 form a third connecting line L3, the fourth looping position two 4012, the third looping position two 3022 and the second looping position two 2032 form a fourth connecting line L4, the third tuck position 303 and the fourth tuck position 402 form a fifth connecting line L5, and at least two of the first connecting line L1, the second connecting line L2, the third connecting line L3, the fourth connecting line L4 and the fifth connecting line L5 are parallel to each other.

[0043] In the application, the first looping position one 1011, the first tuck position 102, the first float position 103, the second looping position one 1012 of the first thread part 100 can be represented by simple dots; the second tuck position 201, the second float position 202, the second looping position one 2031, the second looping position two 2032 of the second thread part 200 can also be represented by simple dots; the third float position 301, the third looping position one 3021, the third looping position two 3022, the third tuck position 303 of the third thread part 300 can also be represented by simple dots; the fourth looping position one 4011, the fourth looping position two 4012, the fourth tuck position 402, the fourth float position 403 of the fourth thread part 400 can also be represented by simple dots.

[0044] In the application, in the plane formed in the first direction and the second direction, at least two of the first connecting line L1, the second connecting line L2, the third connecting line L3, the fourth connecting line L4, and the fifth connecting line L5 are parallel to each other, and preferably, all of the first connecting line L1, the second connecting line L2, the third connecting line L3, the fourth connecting line L4, and the fifth connecting line L5 are parallel to each other. In this way, at least one diagonal line can be formed in the breathable sunscreen fabric B, so that the fabric surface has a concave-convex effect to resist ultraviolet rays and allow water vapor and air to pass out.

[0045] Optionally, the first thread part, the second thread part, the second thread part, and the third thread part are at least one of the matt yarn thread and the sunscreen yarn thread.

[0046] In the application, the first thread part, the second thread part, the second thread part, and the third thread part are at least one of the matt yarn thread and the sunscreen yarn thread, which means that the first thread part can be one or a combination of the matt yarn thread and the sunscreen yarn thread, the second thread part can be one or a combination of the matt yarn thread and the sunscreen yarn thread, the third thread part can be one or a combination of the matt yarn thread and the sunscreen yarn thread, and the fourth thread part can be one or a combination of the matt yarn thread and the sunscreen yarn thread. The matt yarn can include titanium dioxide particles for absorbing and reflecting ultraviolet rays, which can improve the ultraviolet resistance of the breathable sunscreen fabric.

[0047] Optionally, the breathable sunscreen fabric B includes a unit area design vertical mapping total area Sz, a unit area shrinkage vertical mapping area S, and a porosity P, and the unit area design vertical mapping total area Sz and the porosity P are respectively:

[0048] Sz=a(dc*w)*b*[dw*(2d+h)]

[0049] P=(Sz-S) / Sz

[0050] wherein, dc is the number of transverse loop-forming positions, tuck-forming positions, float positions in unit length (e.g., 1 mm or 1 cm or 1 dm) of the breathable sunscreen fabric B; dw is the number of longitudinal loop-forming positions, tuck-forming positions, float positions in unit length (e.g., 1 mm or 1 cm or 1 dm) of the breathable sunscreen fabric B; w is the loop-forming width of one loop-forming position; the first wire part, the second wire part, the third wire part, and the fourth wire part adopt the same wire, and d is the wire diameter; h is the loop column (see Figure 6 of the loop-forming position); a is the transverse shrinkage coefficient of the breathable sunscreen fabric B; and b is the longitudinal shrinkage coefficient of the breathable sunscreen fabric B.

[0051] The total design vertical mapping area Sz of the unit area of the breathable sunscreen fabric B can be calculated by Sz=a(dc*w)*b*[dw*(2d+h)]; and the calculation method of the total vertical mapping area S of the unit area of the breathable sunscreen fabric B after shrinkage is as follows: the vertical mapping area of the loop-forming position and the tuck-forming position in each fabric sub-unit 10 is multiplied by the transverse shrinkage rate c and the longitudinal shrinkage rate d, and then the vertical mapping areas of each fabric sub-unit are added in line to obtain the total vertical mapping area S of the yarn.

[0052] S=cd*S1+cd*S2+...cd*Si++...cd*Sn

[0053] wherein, i=1, 2,...n, n represents the total number of fabric sub-units 10, c represents the transverse shrinkage rate of the breathable sunscreen fabric, d represents the longitudinal shrinkage rate of the breathable sunscreen fabric B, and Si represents the vertical mapping area sum of the loop-forming position and the tuck-forming position of the i-th fabric sub-unit 10. Thus, the smaller the mapping area of the fabric, the tighter the fabric, and the lower the fabric transmittance.

[0054] In some embodiments, taking a sample C1 as an example, the void ratio is calculated as shown in Table 1 below, the total design vertical mapping area Sz of the unit area of the breathable sunscreen fabric B is 11007.3abd 2 , the total vertical mapping area S of the unit area of the breathable sunscreen fabric B after shrinkage is 10148.79abd 2 , the porosity of the breathable sunscreen fabric B is 7.8%, the fabric air permeability of the breathable sunscreen fabric B can reach 556 mm / s, and the sunscreen fabric UPF can reach 300+, which has good anti-ultraviolet effect.

[0055] Table 1 Void ratio calculation

[0056]

[0057] In the present application, firstly, the fabric subunit includes a first wire part, a second wire part, a third wire part and a fourth wire part, the first wire part, the second wire part, the third wire part and the fourth wire part each include two loop positions, one tuck position and one float position, the first tuck position and the second tuck position form a first continuous line, the first float position, the second float position and the third float position form a second continuous line, the first loop position two, the second loop position one, the third loop position one and the third loop position one form a third continuous line, the fourth loop position two, the third loop position and the second loop position two form a fourth continuous line, and the third tuck position and the fourth tuck position form a fifth continuous line, and at least two of the first continuous line, the second continuous line, the third continuous line, the fourth continuous line and the fifth continuous line are parallel to each other. In this way, by arranging the positions of the two loop positions, the float position and the tuck position, the breathable sunscreen fabric forms diagonal stripes, which not only increases the thickness of the breathable sunscreen fabric, but also forms a concave-convex effect on the surface of the breathable sunscreen fabric, which expands the contact area between the fabric and the air, facilitates the contact of moisture with air, and thus achieves the purpose of rapid moisture removal from the fabric, thereby enhancing the air permeability and moisture permeability of the fabric. In addition, the front surface of the breathable sunscreen fabric is a plain structure, and the breathable sunscreen fabric is relatively flat and beneficial to water absorption, but does not stick to the skin. The breathable sunscreen fabric has a compact and stable structure, is crisp, has a small longitudinal and transverse extension, has good anti-pilling properties, has good elasticity and wearing comfort, and the matte yarn can provide a cool feeling when worn. Moreover, the breathable sunscreen fabric also has the properties of softness, comfort, air permeability and sun protection, and can meet the requirements of various human motion stretching and wearing comfort of clothes.

[0058] Referring to Figure 7 In the second aspect, the present application provides a preparation method of a breathable sunscreen fabric B, for preparing the breathable sunscreen fabric B of any one of the first aspect, comprising the following steps:

[0059] Step S100: preparing a fabric subunit 100;

[0060] Specifically, step S100 includes the following steps:

[0061] Step S101: the first wire part 100 sequentially forms a first loop position one 1011, a first tuck position 102, a first float position 103 and a first loop position two 1012; the first wire part 100 and the second wire part 200 are wound with each other, and the second wire part 200 sequentially forms a second tuck position 201, a second float position 202, a second loop position one 2031 and a second loop position two 2032;

[0062] Step S102: the first wire part 100 and the third wire part 300 are wound with each other, the second wire part 200 and the third wire part 300 are wound with each other, and the third wire part 300 sequentially forms a third floating thread position 301, a third loop forming position one 3021, a third loop forming position two 3022, and a third tuck position 303; the first wire part 100 and the fourth wire part 400 are wound with each other, and the third wire part 300 and the fourth wire part 400 are wound with each other; and the fourth wire part 400 sequentially forms a fourth loop forming position one 4011, a fourth loop forming position two 4012, a fourth tuck position 402, and a fourth floating thread position 403.

[0063] In the present application, in the first direction, the first wire part 100 sequentially forms a first loop forming position one 1011, a first tuck position 102, a first floating thread position 103, and a first loop forming position two 1012; the second wire part 200 sequentially forms a second tuck position 201, a second floating thread position 202, a second loop forming position one 2031, and a second loop forming position two 2032; the third wire part 300 sequentially forms a third floating thread position 301, a third loop forming position one 3021, a third loop forming position two 3022, and a third tuck position 303; and the fourth wire part 400 sequentially forms a fourth loop forming position one 4011, a fourth loop forming position two 4012, a fourth tuck position 402, and a fourth floating thread position 403. In this way, the first wire part 100, the second wire part 200, the third wire part 300, and the fourth wire part 400 each include two loop forming positions, one tuck position, and one floating thread position. The existence of the loop forming position, the floating thread position, and the tuck position in the fabric sub-unit 100 can make the surface of the fabric have a concave-convex surface, make the cloth surface present a fabric uneven effect, and better the refraction and reflection of ultraviolet rays, thereby making the breathable sun protection fabric B have stronger ultraviolet resistance.

[0064] Optionally, in the planes formed in the first direction and the second direction, the first tuck position 102 and the second tuck position 201 form a first connecting line L1, the first floating thread position 103, the second floating thread position 202, and the third floating thread position 301 form a second connecting line L2, the first loop forming position two 1012, the second loop forming position one 2031, the third loop forming position one 3021, and the third loop forming position one 4011 form a third connecting line L3, the fourth loop forming position two 4012, the third loop forming position 3022, and the second loop forming position two 2032 form a fourth connecting line L4, the third tuck position 303 and the fourth tuck position 402 form a fifth connecting line L5, and at least two of the first connecting line L1, the second connecting line L2, the third connecting line L3, the fourth connecting line L4, and the fifth connecting line L5 are parallel to each other.

[0065] In the present application, in the plane formed by the first direction and the second direction, at least two of the first line L1, the second line L2, the third line L3, the fourth line L4 and the fifth line L5 are parallel to each other, and most preferably, all of the first line L1, the second line L2, the third line L3, the fourth line L4 and the fifth line L5 are parallel to each other. In this way, at least one diagonal line can be formed in the breathable sunscreen fabric B, so that the fabric surface has a concave-convex effect to resist ultraviolet rays and allow water vapor and air to pass out.

[0066] Step S200: a plurality of fabric sub-units 10 are connected and arranged along the first direction, and a plurality of fabric sub-units 10 are connected and arranged along the second direction to prepare the breathable sunscreen fabric B.

[0067] Specifically, step S200 includes the following steps:

[0068] In some embodiments, first, a plurality of fabric sub-units 10 are connected and arranged along the first direction, and then a plurality of fabric sub-units 10 are connected and arranged along the second direction to obtain the breathable sunscreen fabric B;

[0069] In some embodiments, first, a plurality of fabric sub-units 10 are connected and arranged along the second direction, and then a plurality of fabric sub-units 10 are connected and arranged along the first direction to obtain the breathable sunscreen fabric B;

[0070] In some embodiments, a plurality of fabric sub-units 10 are connected and arranged along the first direction, and a plurality of fabric sub-units 10 are connected and arranged along the second direction to finally obtain the breathable sunscreen fabric B.

[0071] In the present application, first, the fabric sub-unit includes a first wire part, a second wire part, a third wire part and a fourth wire part, and the first wire part, the second wire part, the third wire part and the fourth wire part each include two loop positions, one tuck position and one float position. The positions of the two loop positions, the float position and the tuck position are arranged and set so that the breathable sunscreen fabric forms diagonal stripes, which not only increases the thickness of the breathable sunscreen fabric, but also forms a concave-convex effect on the surface of the breathable sunscreen fabric. The concave-convex effect expands the contact area between the fabric and the air, which is conducive to the contact between the moisture and the air, thereby achieving the purpose of rapid departure of the moisture from the fabric and enhancing the air permeability and moisture permeability of the fabric. Then, a plurality of fabric sub-units are connected and arranged along the first direction, and a plurality of fabric sub-units are connected and arranged along the second direction to obtain the breathable sunscreen fabric. The breathable sunscreen fabric has a compact and stable structure, is crisp, has small longitudinal and transverse extensions, has good anti-pilling properties, has good elasticity and wearing comfort, and the matte yarn can provide a cool feeling when worn. Moreover, the breathable sunscreen fabric also has the properties of softness, comfort, air permeability and sun protection, and can meet the requirements of various human body movements and wearing comfort of clothing.

[0072] The above describes the application and its embodiments, which are not restrictive, and the drawings only show one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical scheme should belong to the protection scope of the application.

Claims

1. A method for preparing a breathable sun-proof fabric, It is characterized in that The following steps are involved: Step S100: preparing a fabric subunit; Step S200: connecting a plurality of fabric subunits and arranging them along a first direction, and connecting a plurality of fabric subunits and arranging them along a second direction to prepare a breathable sunscreen fabric; Step S100 includes the following steps: Step S101: The first wire portion is sequentially formed into a first looping position 1, a first tuck position, a first floating position, and a first looping position 2; the first wire portion and the second wire portion are intertwined, and the second wire portion is sequentially formed into a second tuck position, a second floating position, a second looping position 1, and a second looping position 2; Step S102: The first wire section and the third wire section are intertwined, the second wire section and the third wire section are intertwined, and the third wire section is sequentially formed into a third floating position, a third loop position, a second third loop position, and a third tuck position; the first wire section and the fourth wire section are intertwined, and the third wire section and the fourth wire section are intertwined; the fourth wire section is sequentially formed into a fourth loop position, a second fourth loop position, a fourth tuck position, and a fourth floating position; In the plane formed by the first direction and the second direction, the first tuck position and the second tuck position form a first connecting line, the first floating line position, the second floating line position and the third floating line position form a second connecting line, the first looping position two, the second looping position one, the third looping position one and the third looping position one form a third connecting line, the fourth looping position two, the third looping position and the second looping position two form a fourth connecting line, the third tuck position and the fourth tuck position form a fifth connecting line, and at least two of the first connecting line, the second connecting line, the third connecting line, the fourth connecting line and the fifth connecting line are parallel to each other.

2. The breathable sunscreen fabric prepared by the method of claim 1, characterized in that: include: Multiple fabric sub-units and protrusion units, multiple fabric sub-units are connected and arranged along the first direction, multiple fabric sub-units are connected and arranged along the second direction, the protrusion unit includes a first protrusion and a second protrusion, the first protrusion and the second protrusion both extend along the third direction, and the first direction, the second direction and the third direction intersect with each other.

3. The breathable sun-proof fabric according to claim 2, characterized in that: The fabric subunit includes a first wire portion, a second wire portion, a third wire portion, and a fourth wire portion. The first wire portion and the second wire portion are intertwined with each other, the first wire portion and the third wire portion are intertwined with each other, the second wire portion and the third wire portion are intertwined with each other, the first wire portion and the fourth wire portion are intertwined with each other, and the third wire portion and the fourth wire portion are intertwined with each other.

4. The breathable sun-proof fabric according to claim 3, characterized in that: The first wire section includes the first looping position one, the first tuck position, the first floating line position, and the first looping position two in sequence; the second wire section includes the second tuck position, the second floating line position, the second looping position one, and the second looping position two in sequence; the third wire section includes the third floating line position, the third looping position one, the third looping position two, and the third looping position in sequence; the fourth wire section includes the fourth looping position one, the fourth looping position two, the fourth tuck position, and the fourth floating line position in sequence.

5. The breathable sun-proof fabric according to claim 4, characterized in that: In the plane formed by the first direction and the second direction, the first tuck position and the second tuck position form a first connecting line, the first floating line position, the second floating line position and the third floating line position form a second connecting line, the first looping position two, the second looping position one, the third looping position one and the third looping position one form a third connecting line, the fourth looping position two, the third looping position and the second looping position two form a fourth connecting line, the third tuck position and the fourth tuck position form a fifth connecting line, and at least two of the first connecting line, the second connecting line, the third connecting line, the fourth connecting line and the fifth connecting line are parallel to each other.

6. The breathable sun-proof fabric according to claim 5, characterized in that: The first wire portion, the second wire portion, the third wire portion, and the third wire portion are all at least one of matte yarn wires and sun-proof yarn wires.

7. The breathable sun-proof fabric according to claim 6, characterized in that: The breathable sun-proof fabric includes: the designed vertical mapping total area per unit area Sz, the vertical mapping area per unit area after shrinkage S and the porosity P. The designed vertical mapping total area per unit area Sz and the porosity P are respectively: Sz=a(dc*w)*b*[dw*(2d+h)] P=(Sz-S) / Sz Among them, dc is the number of horizontal loop positions, tuck positions and floating positions per unit length of breathable sun-proof fabric; dw is the number of longitudinal loop positions, tuck positions and floating positions per unit length of breathable sun-proof fabric; w is the loop width of a loop position; the first wire section, the second wire section, the third wire section and the fourth wire section use the same wire, d is the wire diameter; h is the loop column of the loop position, a is the lateral shrinkage coefficient of the breathable sun-proof fabric; b is the longitudinal shrinkage coefficient of the breathable sun-proof fabric.

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