Breathable sunscreen fabric with anti-perspective function and preparation method thereof

Abstract

The invention discloses a preparation method of a breathable sunscreen fabric with an anti-perspective function, which comprises the following steps: slicing and spinning raw materials added with ultraviolet absorbent and screener nanoparticles to prepare POY (pre-oriented yarn), and twisting to prepare DTY (draw textured yarn) with an anti-ultraviolet effect; fDY yarn with a skin-core structure is prepared, the FDY yarn comprises a core layer and a skin layer, the skin layer wraps the outside of the core layer, and the titanium dioxide content of the core layer is gt; the skin layer is made of full-dull yarns; a warp knitting or weft knitting structure is adopted, and the DTY yarn with the anti-ultraviolet effect and the FDY yarn with the skin-core structure are arranged and participate in knitting to prepare the breathable sunscreen fabric with the anti-perspective function. The invention further provides the breathable sunscreen fabric with the anti-perspective function, the breathable sunscreen fabric has the anti-perspective and anti-ultraviolet effects, meanwhile, the good breathability and the non-skin-sticking property during sweating are achieved, and the application range is wide.

Description

Technical Field

[0001] The invention belongs to the technical field of textiles and relates to a breathable sun-proof fabric with an anti-see-through function and a preparation method thereof. Background Art

[0002] As hot weather becomes more frequent in summer, knitted sun protection clothing is also very popular. Warp knitting has a good wearing experience due to its smooth and bony characteristics. At present, the warp knitted sun protection fabrics on the market need good sun protection effect. If they are too thick or too thin, they will be too transparent and look bad. Therefore, a lightweight, anti-transmission and sun-proof warp knitted fabric is needed, which can also bring good breathability and moisture absorption and quick drying to the wearer, improving the summer travel experience. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a breathable sunscreen fabric with anti-see-through function and a preparation method thereof, so as to solve the problems of see-through and breathability in thin sunscreen fabrics.

[0004] Technical solution: A method for preparing a breathable sunscreen fabric with an anti-see-through function of the present invention comprises the following steps:

[0005] S1, spinning the raw material slices to which the ultraviolet absorber and the shielding agent nanoparticles are added to prepare the POY yarn, and preparing the DTY yarn with anti-ultraviolet effect by twisting treatment;

[0006] S2. Prepare an FDY yarn with a core-skin structure, wherein the FDY yarn comprises a core layer and a skin layer, wherein the skin layer is coated on the outside of the core layer, the titanium dioxide content of the core layer is greater than 8%, and the skin layer is a fully matte yarn;

[0007] S3. Using warp knitting or weft knitting structure, the DTY yarn with anti-ultraviolet effect and the FDY yarn with skin-core structure are arranged and knitted to obtain a breathable sun-proof fabric with anti-see-through function.

[0008] Furthermore, the ultraviolet absorber in step S1 is zinc oxide, and the shielding agent is titanium dioxide.

[0009] Furthermore, the raw material slices in step S1 are nylon slices, polyester slices or composite material slices.

[0010] Furthermore, the thickness of the DTY yarn and the FDY yarn is different. The fabric surface is arched, UV protection and penetration prevention are achieved, and the effect of breathability is achieved at the same time.

[0011] Furthermore, elastic yarn is added during the knitting process of step S3 to meet the wearing requirements of increasing fabric density and stretch elasticity.

[0012] Furthermore, the elastic yarn is spandex yarn, elastic nylon or elastic polyester.

[0013] Furthermore, the number of the DTY yarns arranged continuously is ≤6, and the number of the FDY yarns arranged continuously is ≤3.

[0014] Furthermore, during the weaving process of step S3, the ratio of the number of arranged grains of the DTY yarn to that of the FDY yarn is (1-3):1.

[0015] Provided is a breathable sunscreen fabric with an anti-see-through function prepared by the preparation method, wherein the fabric has an ultraviolet rating of UPF50+ and UVA<5%.

[0016] Furthermore, the air permeability of the fabric is ≥400mm / S.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. Adding ultraviolet absorbers and nanoparticles containing shielding agents before spinning can further enhance the anti-ultraviolet ability of the yarn, and prepare DTY yarn with anti-ultraviolet effect. Together with part of the anti-see-through yarn combined with spandex, through the weaving of a special structure, the fabric has pores and plays a good role in ventilation and sun protection. The invention has the effects of anti-see-through and anti-ultraviolet, as well as good air permeability and non-sticky properties when sweating, and has a wide range of applicability.

[0018] 2. The DTY and FDY yarns of different deniers are arranged at intervals to achieve an arched fabric surface, thus achieving a breathable effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the braiding structure of the present invention.

[0020] Figure 2 This is a scanning electron microscope image of FDY yarn with a skin-core structure.

[0021] Figure 3 This is a diagram showing the threading method of the UV-resistant yarn in Example 1.

[0022] Figure 4 This is a diagram of the threading method of the core-sheath structure yarn and spandex in Example 1.

[0023] Figure 5 This is a comparison diagram of the fabric prepared by the present invention and fabrics prepared by different yarns in a dry state.

[0024] Figure 6 This is a comparison diagram of the fabric prepared by the present invention and fabrics prepared by different yarns in a wet state. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0026] The present invention discloses a method for preparing a breathable sunscreen fabric with an anti-see-through function, comprising the following steps:

[0027] S1. POY yarn is prepared by spinning raw material slices added with ultraviolet absorber and shielding agent nanoparticles, and DTY yarn with anti-ultraviolet effect is prepared by twisting treatment; nanoparticles of ultraviolet absorber in sunlight are selected and added to the filament raw material slices, so that the yarn itself has a strong ultraviolet absorption function and reduces the transmittance of sunlight;

[0028] S2, prepare FDY yarn with skin-core structure, such as Figure 2 As shown, FDY yarn includes a core layer and a skin layer, the skin layer is coated on the outside of the core layer, wherein the titanium dioxide content of the core layer is >8%, and the skin layer is a conventional full-dull yarn with a titanium dioxide content of 2%; the skin layer uses conventional full-dull yarn to avoid the yarn from wearing the direct equipment accessories, and in addition to ensuring the uniformity of dyeing. Titanium dioxide itself has a dulling property, and a high content of titanium dioxide has a significant effect on shielding light;

[0029] S3. Using warp knitting or weft knitting structure, the DTY yarn with anti-ultraviolet effect and the FDY yarn with skin-core structure are arranged and knitted to obtain a breathable sun-proof fabric with anti-see-through function.

[0030] like Figure 1 The woven structure of the present invention is shown, where DTY yarn 1 and FDY yarn 2 are arranged at intervals, wherein the number of DTY yarns arranged continuously is ≤6, and the number of FDY yarns arranged continuously is ≤3. Preferably, the ratio of the number of DTY yarns to the number of FDY yarns arranged is (1-3):1.

[0031] In a specific embodiment, the thickness of the DTY yarn and the FDY yarn are different, so as to realize the state of the fabric surface being arched, and realize the effect of UV protection, anti-transmission, and breathability.

[0032] In a specific embodiment, elastic yarn is involved in the weaving process to achieve the wearing requirements of increasing fabric density and stretch elasticity, and the elastic yarn is spandex yarn, elastic nylon or elastic polyester.

[0033] Principle: Due to the fluffiness of DTY yarn, it can better fill the holes formed in the structure of knitted fabrics and avoid direct penetration of ultraviolet rays. Adding ultraviolet absorbers and nanoparticles containing shielding agents before slicing and spinning can further enhance the anti-ultraviolet ability of the yarn. The interval arrangement of DTY and FDY yarns with different deniers creates an uneven appearance on the surface of the fabric, which reduces contact with the skin and makes it difficult for the fabric to stick to the skin when sweating. On the other hand, the uneven surface and different fluffiness promote wind convection during exercise, making the fabric more breathable.

[0034] Example 1

[0035] In terms of weaving technology, examples are as follows:

[0036] 1. Warping of yarn used for warp knitting:

[0037] 1) Filament warping:

[0038] Warping machine model: Karl Mayer DS21 / 30NC-2, negative yarn feeding.

[0039] Warping temperature: 25℃ Warping humidity: 65%

[0040] 2) Spandex warping:

[0041] Warping machine model: Karl Mayer DS21 / 30NC-2, negative yarn feeding.

[0042] Warping temperature: 25℃ Warping humidity: 65%

[0043] The workshop sets the process parameters under the above temperature and humidity conditions.

[0044] 2. Weaving

[0045] Weaving machine model: Karl Mayer HKS3-S or other warp knitting machines that meet the requirements;

[0046] Machine gauge range: E32-E40.

[0047] The yarn threading method is full threading.

[0048] Using Yarn:

[0049] GB1: Nylon 6 (UV-resistant yarn) 40D / 34f FD DTY, padding number: 0-1 / 2-1 / 3-2 / 1-2 / / , such as Figure 3 ;

[0050] GB2: Nylon 6 (core-skin structure yarn) 30D / 24f FD FDY, padding number: 0-1 / 2-1 / 3-2 / 1-2 / / , such as Figure 4 ;

[0051] GB2:Spandex 30D, inlay yarn number: 1-0 / 1-2 / 2-3 / 2-1 / / , same Figure 4 .

[0052] 3. Finishing process

[0053] Washing - pre-ordering - dyeing - finalizing - fabric inspection.

[0054] 4. The test results are shown in the following table:

[0055] Test items standard Measured Width GB / T4666-2009 152cm Weight GB / T6529-2008 145gsm UPF GB / T18830-2009 UPF:228 UVA GB / T18830-2009 T(UVA): 2.17% Snagging performance test GB / T11047-2008 L: 4th level; W: 4th level Air permeability GB / T5453-1997 453mm / S Coolness value GB / T35263-2017 Q-max: 0.212 Dimensional change after washing GB / T8629-2017 L: -2.5%; W: -1.6%

[0056] It can be seen from the test results that the lightweight, anti-transmission and sun-proof fabric prepared by the present invention adopts warp knitting structure as a whole, with a gram weight of only 145gsm, and at the same time achieves UPF228, UVA2.17%, coolness>0.2, and air permeability of 453mm / S. It is lightweight, sun-proof and has good air permeability.

[0057] Example 2

[0058] Flat cross-section yarn and common yarn are selected and the same knitting process is used to prepare fabric A and fabric B of the same specification. The fabric prepared by the present invention is fabric C. A4 white paper is used to print black grids, and the perspective of fabric C prepared by the present invention is compared with fabric A and fabric B in dry state and wet state, respectively, to simulate the two states of no sweating and sweating when the human body is in motion.

[0059] The test results are as follows Figure 5 It is a comparison diagram in wet state, the state of the fabric of the present invention in dry state is shown as C1, the state of the fabric made of ordinary yarn in dry state is shown as A1, and the state of the fabric made of flat cross-section yarn in dry state is shown as B1;

[0060] like Figure 6 The wet state of the fabric of the present invention is shown in C2, the wet state of the fabric made of ordinary yarn is shown in A2, and the wet state of the fabric made of flat cross-section yarn is shown in B2;

[0061] It can be seen that the anti-see-through performance of the fabric prepared by the present invention is significantly better than that of the fabric woven with flat cross-section yarn and ordinary yarn in both dry and wet states, and can bring a better wearing experience when used to prepare summer clothing.

Claims

1. A method for preparing a breathable sunscreen fabric with an anti-see-through function, characterized in that: The following steps are involved: S1, spinning the raw material slices to which the ultraviolet absorber and the shielding agent nanoparticles are added to prepare the POY yarn, and preparing the DTY yarn with anti-ultraviolet effect by twisting treatment; S2. Prepare an FDY yarn with a core-skin structure, wherein the FDY yarn comprises a core layer and a skin layer, wherein the skin layer is coated on the outside of the core layer, the titanium dioxide content of the core layer is greater than 8%, and the skin layer is a fully matte yarn; S3. Using warp knitting or weft knitting structure, the DTY yarn with anti-ultraviolet effect and the FDY yarn with skin-core structure are arranged and knitted to obtain a breathable sun-proof fabric with anti-see-through function.

2. The method for preparing the breathable sun-proof fabric with anti-see-through function according to claim 1, characterized in that: The ultraviolet absorber in step S1 is zinc oxide, and the shielding agent is titanium dioxide.

3. The method for preparing the breathable sun-proof fabric with anti-see-through function according to claim 1, characterized in that: The raw material slices in step S1 are nylon slices, polyester slices or composite material slices.

4. The method for preparing the breathable sun-proof fabric with anti-see-through function according to claim 1, characterized in that: The DTY yarn and the FDY yarn have different thicknesses.

5. The method for preparing the breathable sun-proof fabric with anti-see-through function according to claim 1, characterized in that: In the knitting process of step S3, elastic yarn is added.

6. The method for preparing the breathable sun-proof fabric with anti-see-through function according to claim 5, characterized in that: The elastic yarn is spandex yarn, elastic nylon or elastic polyester.

7. The method for preparing the breathable sun-proof fabric with anti-see-through function according to claim 1, characterized in that: The number of the DTY yarns arranged continuously is ≤6, and the number of the FDY yarns arranged continuously is ≤3.

8. The method for preparing the breathable sun-proof fabric with anti-see-through function according to claim 7, characterized in that: During the weaving process of step S3, the ratio of the number of arranged grains of the DTY yarn to that of the FDY yarn is (1-3):

1.

9. A breathable sunscreen fabric with anti-see-through function prepared by the preparation method according to any one of claims 1 to 8, characterized in that: The fabric has a UV rating of UPF50+, UVA<5%.

10. The breathable sun-proof fabric with anti-see-through function according to claim 9, characterized in that: The air permeability of the fabric is ≥400mm / S.

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