Smooth sunscreen knitted fabric and preparation method thereof

Abstract

The invention relates to a soft and smooth sun-resistant knitted fabric and a preparation method thereof.The soft and smooth sun-resistant knitted fabric comprises a fabric body and a sun-resistant layer arranged on the surface of the fabric body, eight paths of patterns of the fabric body are circulated, and from top to bottom, the weave structure of the first path of the fabric body is a floating thread weave, a looping weave, a looping weave and a floating thread weave in sequence; the weave structure of the second path of the fabric body is a looping weave, a floating thread weave, a floating thread weave and a looping weave in sequence; the third stitch structure of the fabric body is a floating thread stitch, a floating thread stitch, a looping stitch and a looping stitch in sequence; and the weave structure of the fourth path of the fabric body sequentially comprises a looping weave, a looping weave, a floating thread weave and a floating thread weave. According to the soft and smooth sun-resistant knitted fabric and the preparation method thereof, the sun-resistant layer is arranged on the fabric body, so that the sun-resistant performance of the fabric is further enhanced, meanwhile, the soft hand feeling and the fluffy texture are achieved, and the comfort experience of a user is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fabrics, and in particular to a soft and smooth sun-proof knitted fabric and a preparation method thereof. Background Art

[0002] As the global climate warms, the intensity of ultraviolet rays in the sun gradually increases. Skin exposed to ultraviolet rays for a long time is prone to damage, which can lead to skin diseases, weakened immune system and other problems. Therefore, ultraviolet protection has received more and more attention. There are many brands of sun protection clothing on the market, among which polyester fiber and nylon sun protection clothing occupy a dominant position. With the improvement of people's living standards, sun protection clothing is not only a piece of clothing, but also a reflection of a life attitude.

[0003] However, the current sun protection clothing has disadvantages such as poor comfort and poor washability. Consumers are prone to feeling stuffy and even sweating when wearing these clothes made of synthetic materials. Some sun protection clothing is made of thicker fabrics in order to achieve UV protection, which will affect consumers' comfort when wearing it, especially in hot weather.

[0004] In view of this, there is an urgent need for a more comfortable, smooth, sun-proof knitted fabric and a preparation method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a soft and smooth sun-proof knitted fabric and a preparation method thereof in view of the deficiencies in the prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] The first aspect of the present invention is to provide a soft sun-proof knitted fabric, comprising: a fabric body and a sun-proof layer arranged on the surface of the fabric body, wherein the pattern of the fabric body is cyclical in eight directions, in order from top to bottom.

[0008] The first-line structure of the fabric body is a floating thread structure, a loop structure, a loop structure, and a floating thread structure in sequence;

[0009] The second-way structure of the fabric body is looped structure, floating thread structure, floating thread structure, and looped structure in sequence;

[0010] The third-way structure of the fabric body is a floating thread structure, a floating thread structure, a loop structure, and a loop structure.

[0011] The fourth route of the fabric body has the following structures: looped structure, looped structure, floating structure, and floating structure;

[0012] The fabric body has a front side and a back side opposite to each other, the front side has a texture structure, and the back side has a microporous structure;

[0013] The sunscreen layer is arranged on the front side of the fabric body, and comprises microcapsules containing an anti-ultraviolet agent.

[0014] Furthermore, the thickness of the fabric body is 0.2mm-1.5mm.

[0015] The thickness of the sunscreen layer is 1 μm-10 μm.

[0016] Preferably, the first route of the fabric body and the second route of the fabric body are made of nylon and spandex;

[0017] The third route of the fabric body and the fourth route of the fabric body are made of nylon, spandex, and cellulose fiber.

[0018] Preferably, the nylon is a hollow nylon fiber; or / and

[0019] The spandex is a spandex covered yarn; or / and

[0020] The cellulose fiber includes at least one of modal fiber and eco-cotton fiber.

[0021] Furthermore, the hollowness of the nylon fiber is greater than 22%, and nylon has better performance.

[0022] Preferably, the height of the texture structure is 0.1 mm-0.5 mm; or / and

[0023] The pore size of the microporous structure is 5 μm-5 μm.

[0024] Preferably, the coefficient of variation CV of the smooth sun-protective knitted fabric is 12%-13%; or / and

[0025] The heat protection rate of soft sun-protective knitted fabrics is greater than 5%; or / and

[0026] The contact cooling coefficient of the soft sun-protective knitted fabric is greater than 0.28 J / cm·s; or / and

[0027] The air permeability coefficient of the smooth sun-protective knitted fabric is greater than 220mm / s.

[0028] The second aspect of the present invention is to provide a method for preparing the above-mentioned soft and smooth sun-proof knitted fabric, comprising:

[0029] S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively;

[0030] S200, weaving: using nylon, spandex and cellulose fibers for weaving and finishing in sequence to obtain a smooth sun-proof knitted fabric;

[0031] Among them, in S200, the weaving process includes:

[0032] The first and second routes of the fabric body are jacquard woven with nylon and spandex;

[0033] The third and fourth routes of the fabric body are woven through nylon, spandex and cellulose fiber mesh;

[0034] The post-finishing treatment includes: pre-shrinking treatment, heat setting treatment, dyeing treatment, softening treatment, and anti-ultraviolet treatment in sequence.

[0035] Furthermore, the cellulose fibers include modal fibers and eucosil, and the eucosil is preferably zero-carbon eucosil.

[0036] Preferably, the pre-shrinking temperature is 80°C-120°C; or / and

[0037] The temperature of the heat setting treatment is 160°C-200°C.

[0038] Preferably, the nylon is a hollow nylon fiber. Preferably, the softening treatment is soaking treatment with a softener;

[0039] The anti-ultraviolet treatment is carried out by spraying a microcapsule emulsion of an anti-ultraviolet agent.

[0040] Furthermore, the preparation method of the microcapsule emulsion of the anti-ultraviolet agent comprises:

[0041] S211, preparing a core material solution: uniformly mixing an anti-ultraviolet agent and a solvent in a mass ratio of 1:2.5-3.5 to obtain a core material solution;

[0042] S212, preparing a wall material solution: mixing porous cyclodextrin and deionized water in a mass ratio of 1:5.5, adding an emulsifier and a cross-linking agent, and continuing to mix uniformly to obtain a wall material solution;

[0043] S213, preparing a microcapsule emulsion: slowly dripping the core material solution into the wall material solution while stirring, so that the core material is gradually wrapped by the wall material, to obtain a microcapsule emulsion containing an anti-ultraviolet agent;

[0044] The anti-ultraviolet agent comprises: a mixture of titanium oxide, zinc oxide, butyl methoxy dibenzoyl and 2-ethylhexyl cyanoacrylate; and the spray particle size of the spray treatment is 2nm-15nm.

[0045] Preferably, the softener comprises: 2wt.%-5wt.% of a cationic quaternary ammonium salt softener, 1wt.%-3wt.% of a modified silicone oil softener, 0.5wt.%-2wt.% of a nonionic surfactant, 0.1wt.%-0.5wt.% of an antioxidant, 0.1wt.%-0.3wt.% of a stabilizer and the balance of deionized water;

[0046] The preparation method of the softener comprises:

[0047] S201, slowly adding deionized water to the cationic quaternary ammonium salt softener, stirring to fully dissolve the cationic quaternary ammonium salt softener, to obtain a cationic quaternary ammonium salt softener solution;

[0048] S202, slowly adding the modified silicone oil softener to the cationic quaternary ammonium salt softener solution, while keeping stirring, to obtain a first mixed solution;

[0049] S203, slowly adding a nonionic surfactant to the first mixed solution while continuously stirring to obtain a second mixed solution;

[0050] S204, adding an antioxidant and a stabilizer to the second mixed solution, stirring evenly, to obtain a softener.

[0051] Furthermore, the cationic quaternary ammonium salt softener includes distearyl dimethyl ammonium chloride (DSDMAC) or tristearyl methyl ammonium chloride (STAC); the modified silicone oil softener includes amino silicone oil or epoxy modified silicone oil; the nonionic surfactant includes polyoxyethylene (POE) or polyethylene glycol (PEG); the antioxidant includes 2,6-di-tert-butyl-p-cresol (BHT) or vitamin E derivatives; the stabilizer includes polyethylene glycol emulsifier or fatty alcohol polyoxyethylene ether.

[0052] The present invention adopts the above technical solution, and has the following technical effects compared with the prior art:

[0053] The soft and smooth sun-proof knitted fabric and the preparation method thereof of the present invention further enhance the sun-proof performance of the fabric by arranging a sun-proof layer on the fabric body; the soft and smooth sun-proof knitted fabric is formed by weaving hollow nylon fibers with ammonia and cellulose fibers, and each fiber of the hollow nylon fibers stores air to form an air protection layer, which makes the fibers softer to the touch and fluffy in texture; in the preparation process, through the adjustment of the yarn and tissue structure, the front side is designed with micro-texture, which not only gives the fabric a three-dimensional sense and a sense of layering, but also provides rich visual effects and texture; the back side has a smoother skin-friendly tissue structure, a flat design, and improved wearing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a triangular arrangement diagram of the smooth sun-proof knitted fabric according to an embodiment of the present invention;

[0055] Figure 2 is a schematic diagram of a smooth sun-proof knitted fabric according to an embodiment of the present invention;

[0056] Description of reference numerals: 100 - fabric body, 110 - sun protection layer. DETAILED DESCRIPTION

[0057] The specific embodiments of the present invention will be described in detail below.

[0058] Unless otherwise defined, technical or scientific terms used in the claims and the specification shall have the common meanings understood by persons having ordinary skills in the technical field to which the present invention belongs.

[0059] The words "include" or similar words used in the patent application specification and claims of the present invention mean that the items appearing before "include" include the items listed after "include" or their equivalents, and do not exclude other items.

[0060] The numerical values ​​mentioned in the present invention include all numerical values ​​that increase from low to high by one unit, assuming that there are at least two units between any lower value and the higher value. For example, if a component or a physical quantity is said to be from 1 to 100, 10 to 90 is more preferred, and 20 to 80 is the most preferred, it is intended to express that values ​​such as 5 to 95, 14 to 76, 23 to 67, 32 to 58, 41 to 49 are clearly listed in this specification; for values ​​less than 1, 0.0001, 0.001, 0.01 or 0.1 are considered to be more suitable as a unit. The above examples are for illustrative purposes only. In fact, all numerical combinations between the lowest value and the highest value listed are deemed to be clearly listed in this specification in a similar manner.

[0061] Example 1

[0062] The present embodiment provides a smooth sun-proof knitted fabric, comprising: a fabric body 100 and a sun-proof layer 110 arranged on the surface of the fabric body 100, the fabric body 100 has a relative front and back, the front has a texture structure, and the back has a microporous structure; the thickness of the fabric body 100 is 0.2 mm, and the thickness of the sun-proof layer 110 is 0.1 μm; the sun-proof layer 110 is arranged on the front of the fabric body 100, and the sun-proof layer 110 includes: microcapsules containing anti-ultraviolet agents.

[0063] The pattern of the fabric body 100 is circulated in eight directions, in order from top to bottom.

[0064] The first-line structure of the fabric body 100 is a floating thread structure, a loop structure, a loop structure, and a floating thread structure in sequence;

[0065] The weave structure of the second route of the fabric body 100 is loop weave, floating weave, floating weave, and loop weave in sequence;

[0066] The weave structures of the third route of the fabric body 100 are floating weave, floating weave, loop weave, and loop weave in sequence;

[0067] The weave structures of the fourth route of the fabric body 100 are loop weave, loop weave, floating weave, and floating weave in sequence;

[0068] The preparation method of the soft and sun-proof knitted fabric comprises:

[0069] S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively;

[0070] S200, weaving: the first and second routes of the fabric body 100 are subjected to jacquard weaving treatment with nylon and spandex, the third and fourth routes of the fabric body 100 are subjected to weaving treatment with nylon, spandex, modal fiber and zero-carbon UCO mesh, and then subjected to pre-shrinking treatment at 80° C., heat setting treatment at 160° C., dyeing treatment, soaking in a softener for 3.5 hours and then drying, and then spraying treatment with a microcapsule emulsion of an anti-ultraviolet agent to obtain a smooth sun-proof knitted fabric;

[0071] Cellulose fibers include modal fibers and zero-carbon Eukosil fibers, and nylon is hollow nylon fiber.

[0072] The preparation method of the microcapsule emulsion of the anti-ultraviolet agent comprises:

[0073] S211, preparing a core material solution: uniformly mixing an anti-ultraviolet agent and deionized water in a mass ratio of 1:2.5 to obtain a core material solution;

[0074] S212, preparing a wall material solution: mixing porous cyclodextrin and deionized water in a mass ratio of 1:5.5, adding an emulsifier and a cross-linking agent, and continuing to mix uniformly to obtain a wall material solution;

[0075] S213, preparing a microcapsule emulsion: slowly dripping the core material solution into the wall material solution while stirring, so that the core material is gradually wrapped by the wall material, to obtain a microcapsule emulsion containing an anti-ultraviolet agent;

[0076] The anti-ultraviolet agent includes: a mixture of titanium oxide, zinc oxide, butyl methoxy dibenzoyl and 2-ethylhexyl cyanoacrylate; the spray particle size of the spray treatment is 2nm;

[0077] The softener was purchased from outside.

[0078] Example 2

[0079] The present embodiment provides a smooth sun-proof knitted fabric, comprising: a fabric body 100 and a sun-proof layer 110 arranged on the surface of the fabric body 100, the fabric body 100 has a relative front and back, the front has a texture structure, and the back has a microporous structure; the thickness of the fabric body 100 is 1.5 mm, and the thickness of the sun-proof layer 110 is 10 μm; the sun-proof layer 110 is arranged on the front of the fabric body 100, and the sun-proof layer 110 includes: microcapsules containing anti-ultraviolet agents.

[0080] The pattern of the fabric body 100 is circulated in eight directions, in order from top to bottom.

[0081] The first-line structure of the fabric body 100 is a floating thread structure, a loop structure, a loop structure, and a floating thread structure in sequence;

[0082] The weave structure of the second route of the fabric body 100 is loop weave, floating weave, floating weave, and loop weave in sequence;

[0083] The weave structures of the third route of the fabric body 100 are floating weave, floating weave, loop weave, and loop weave in sequence;

[0084] The weave structures of the fourth route of the fabric body 100 are loop weave, loop weave, floating weave, and floating weave in sequence;

[0085] The preparation method of the soft and sun-proof knitted fabric comprises:

[0086] S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively;

[0087] S200, weaving: the first and second routes of the fabric body 100 are subjected to jacquard weaving treatment with nylon and spandex, the third and fourth routes of the fabric body 100 are subjected to mesh weaving treatment with nylon, spandex, modal fiber and zero-carbon UCO, and then subjected to pre-shrinking treatment at 120° C., heat setting treatment at 200° C., dyeing treatment, soaking in a softener for 8 hours and then drying, and then spraying treatment with a microcapsule emulsion of an anti-ultraviolet agent to obtain a smooth sun-proof knitted fabric;

[0088] Cellulose fibers include modal fibers and zero-carbon Eukosil fibers, and nylon is hollow nylon fiber.

[0089] The preparation method of the microcapsule emulsion of the anti-ultraviolet agent comprises:

[0090] S211, preparing a core material solution: uniformly mixing an anti-ultraviolet agent and deionized water in a mass ratio of 1:3.5 to obtain a core material solution;

[0091] S212, preparing a wall material solution: mixing porous cyclodextrin and deionized water in a mass ratio of 1:5.5, adding an emulsifier and a cross-linking agent, and continuing to mix uniformly to obtain a wall material solution;

[0092] S213, preparing a microcapsule emulsion: slowly dripping the core material solution into the wall material solution while stirring, so that the core material is gradually wrapped by the wall material, to obtain a microcapsule emulsion containing an anti-ultraviolet agent;

[0093] The anti-ultraviolet agent includes: a mixture of titanium oxide, zinc oxide, butyl methoxy dibenzoylmethane and 2-ethylhexyl cyanoacrylate; the spray particle size of the spray treatment is 15nm;

[0094] The softener was purchased from outside.

[0095] Example 3

[0096] The present embodiment provides a smooth sun-proof knitted fabric, comprising: a fabric body 100 and a sun-proof layer 110 arranged on the surface of the fabric body 100, the fabric body 100 has a relative front and back, the front has a texture structure, and the back has a microporous structure; the thickness of the fabric body 100 is 1 mm, and the thickness of the sun-proof layer 110 is 5 μm; the sun-proof layer 110 is arranged on the front of the fabric body 100, and the sun-proof layer 110 includes: microcapsules containing anti-ultraviolet agents.

[0097] The pattern of the fabric body 100 is circulated in eight directions, in order from top to bottom.

[0098] The first-line structure of the fabric body 100 is a floating thread structure, a loop structure, a loop structure, and a floating thread structure in sequence;

[0099] The weave structure of the second route of the fabric body 100 is loop weave, floating weave, floating weave, and loop weave in sequence;

[0100] The weave structures of the third route of the fabric body 100 are floating weave, floating weave, loop weave, and loop weave in sequence;

[0101] The weave structures of the fourth route of the fabric body 100 are loop weave, loop weave, floating weave, and floating weave in sequence;

[0102] The preparation method of the soft and sun-proof knitted fabric comprises:

[0103] S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively;

[0104] S200, weaving: the first and second routes of the fabric body 100 are subjected to jacquard weaving treatment with nylon and spandex, the third and fourth routes of the fabric body 100 are subjected to mesh weaving treatment with nylon, spandex, modal fiber and zero-carbon Ukoswe, and then subjected to pre-shrinking treatment at 100° C., heat setting treatment at 180° C., dyeing treatment, soaking in a softener for 7 hours and then drying, and then spraying treatment with a microcapsule emulsion of an anti-ultraviolet agent to obtain a smooth sun-proof knitted fabric;

[0105] Cellulose fibers include modal fibers and zero-carbon Eukosil fibers, and nylon is hollow nylon fiber.

[0106] The preparation method of the microcapsule emulsion of the anti-ultraviolet agent comprises:

[0107] S211, preparing a core material solution: uniformly mixing an anti-ultraviolet agent and deionized water in a mass ratio of 1:3 to obtain a core material solution;

[0108] S212, preparing a wall material solution: mixing porous cyclodextrin and deionized water in a mass ratio of 1:5.5, adding an emulsifier and a cross-linking agent, and continuing to mix uniformly to obtain a wall material solution;

[0109] S213, preparing a microcapsule emulsion: slowly dripping the core material solution into the wall material solution while stirring, so that the core material is gradually wrapped by the wall material, to obtain a microcapsule emulsion containing an anti-ultraviolet agent;

[0110] The anti-ultraviolet agent includes: a mixture of titanium oxide, zinc oxide, butyl methoxy dibenzoyl and 2-ethylhexyl cyanoacrylate; the spray particle size of the spray treatment is 10nm;

[0111] The softener comprises: 2wt.% of DSDMAC, 1wt.% of amino silicone oil, 0.5wt.% of POE, 0.1wt.% of BHT, 0.1wt.% of PEG-40 and the balance of deionized water;

[0112] The preparation method of the softener comprises:

[0113] S201, slowly add deionized water to DSDMAC, stir to fully dissolve DSDMAC, and obtain a cationic quaternary ammonium salt softener solution;

[0114] S202, slowly adding amino silicone oil to the cationic quaternary ammonium salt softener solution, keeping stirring, to obtain a first mixed solution;

[0115] S203, slowly adding POE to the first mixed solution while continuously stirring to obtain a second mixed solution;

[0116] S204, adding BHT and PEG-40 to the second mixed solution, stirring evenly to obtain a softener.

[0117] Example 4

[0118] The present embodiment provides a smooth sun-proof knitted fabric, comprising: a fabric body 100 and a sun-proof layer 110 arranged on the surface of the fabric body 100, the fabric body 100 has a relative front and back, the front has a texture structure, and the back has a microporous structure; the thickness of the fabric body 100 is 1 mm, and the thickness of the sun-proof layer 110 is 5 μm; the sun-proof layer 110 is arranged on the front of the fabric body 100, and the sun-proof layer 110 includes: microcapsules containing anti-ultraviolet agents.

[0119] The pattern of the fabric body 100 is circulated in eight directions, in order from top to bottom.

[0120] The first-line structure of the fabric body 100 is a floating thread structure, a loop structure, a loop structure, and a floating thread structure in sequence;

[0121] The weave structure of the second route of the fabric body 100 is loop weave, floating weave, floating weave, and loop weave in sequence;

[0122] The weave structures of the third route of the fabric body 100 are floating weave, floating weave, loop weave, and loop weave in sequence;

[0123] The weave structures of the fourth route of the fabric body 100 are loop weave, loop weave, floating weave, and floating weave in sequence;

[0124] The preparation method of the soft and sun-proof knitted fabric comprises:

[0125] S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively;

[0126] S200, weaving: the first and second routes of the fabric body 100 are subjected to jacquard weaving treatment with nylon and spandex, the third and fourth routes of the fabric body 100 are subjected to mesh weaving treatment with nylon, spandex, modal fiber and zero-carbon Ukoswe, and then subjected to pre-shrinking treatment at 100° C., heat setting treatment at 180° C., dyeing treatment, soaking in a softener for 6.5 hours and then drying, and then spraying treatment with a microcapsule emulsion of an anti-ultraviolet agent to obtain a smooth sun-proof knitted fabric;

[0127] Cellulose fibers include modal fibers and zero-carbon Eukosil nylon, which are hollow nylon fibers.

[0128] The preparation method of the microcapsule emulsion of the anti-ultraviolet agent comprises:

[0129] S211, preparing a core material solution: uniformly mixing an anti-ultraviolet agent and deionized water in a mass ratio of 1:3.5 to obtain a core material solution;

[0130] S212, preparing a wall material solution: mixing porous cyclodextrin and deionized water in a mass ratio of 1:5.5, adding an emulsifier and a cross-linking agent, and continuing to mix uniformly to obtain a wall material solution;

[0131] S213, preparing a microcapsule emulsion: slowly dripping the core material solution into the wall material solution while stirring, so that the core material is gradually wrapped by the wall material, to obtain a microcapsule emulsion containing an anti-ultraviolet agent;

[0132] The anti-ultraviolet agent includes: a mixture of titanium oxide, zinc oxide, butyl methoxy dibenzoylmethane and 2-ethylhexyl cyanoacrylate; the spray particle size of the spray treatment is 12nm;

[0133] The softener comprises: 5wt.% STAC, 3wt.% epoxy modified silicone oil, 2wt.% PEG, 0.5wt.% vitamin E derivative, 0.3wt.% fatty alcohol polyoxyethylene ether and the balance deionized water;

[0134] The preparation method of the softener comprises:

[0135] S201, slowly add deionized water to STAC, stir to fully dissolve STAC, and obtain a cationic quaternary ammonium salt softener solution;

[0136] S202, slowly adding epoxy modification to the cationic quaternary ammonium salt softener solution, keeping stirring, to obtain a first mixed solution;

[0137] S203, slowly adding PEG to the first mixed solution while continuously stirring to obtain a second mixed solution;

[0138] S204, adding vitamin E derivative and fatty alcohol polyoxyethylene ether to the second mixed solution, stirring evenly to obtain a softener.

[0139] Comparative Example 1

[0140] This embodiment provides a soft sun-proof knitted fabric with a thickness of 2 mm. The pattern of the fabric is cyclical in eight directions, in order from top to bottom.

[0141] The first-line weave structure of the fabric is floating weave, loop weave, loop weave, and floating weave in sequence;

[0142] The second weave structure of the fabric is loop weave, floating weave, floating weave, and loop weave in sequence;

[0143] The third-way weave structure of the fabric is floating weave, floating weave, loop weave, and loop weave in sequence;

[0144] The fourth fabric structure is looped weave, looped weave, floating weave, and floating weave.

[0145] The preparation method of the soft and sun-proof knitted fabric comprises:

[0146] S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively;

[0147] S200, weaving: the first and second routes of the fabric are subjected to jacquard weaving treatment with nylon and spandex, the third and fourth routes of the fabric are subjected to weaving treatment with nylon, spandex, modal fiber and zero-carbon UCO mesh, and then subjected to pre-shrinking treatment at 80°C, heat setting treatment at 160°C, dyeing treatment, soaking in a softener for 3.5 hours and then drying to obtain a smooth sun-proof knitted fabric;

[0148] The cellulose fibers include modal fibers and zero-carbon Eucosil, the nylon is hollow nylon fiber, and the softener is purchased from outside.

[0149] Comparative Example 2

[0150] The present embodiment provides a smooth sun-proof knitted fabric, comprising: a fabric body 100 and a sun-proof layer 110 arranged on the surface of the fabric body 100, the fabric body 100 has a relative front and back, the front has a texture structure, and the back has a microporous structure; the thickness of the fabric body 100 is 1 mm, and the thickness of the sun-proof layer 110 is 5 μm; the sun-proof layer 110 is arranged on the front of the fabric body 100, and the sun-proof layer 110 includes: microcapsules containing anti-ultraviolet agents.

[0151] The pattern of the fabric body 100 is circulated in eight directions, in order from top to bottom.

[0152] The first-line structure of the fabric body 100 is a floating thread structure, a loop structure, a loop structure, and a floating thread structure in sequence;

[0153] The weave structure of the second route of the fabric body 100 is loop weave, floating weave, floating weave, and loop weave in sequence;

[0154] The weave structures of the third route of the fabric body 100 are floating weave, floating weave, loop weave, and loop weave in sequence;

[0155] The weave structures of the fourth route of the fabric body 100 are loop weave, loop weave, floating weave, and floating weave in sequence;

[0156] The preparation method of the soft and sun-proof knitted fabric comprises:

[0157] S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively;

[0158] S200, weaving: the first and second routes of the fabric body 100 are subjected to jacquard weaving treatment with nylon and spandex, the third and fourth routes of the fabric body 100 are subjected to weaving treatment with nylon, spandex, modal fiber and zero-carbon UCO mesh, and then subjected to pre-shrinking treatment at 80° C., heat setting treatment at 160° C., dyeing treatment, soaking in a softener for 3.5 hours and then drying, and then spraying treatment with a microcapsule emulsion of an anti-ultraviolet agent to obtain a smooth sun-proof knitted fabric;

[0159] Cellulose fibers include modal fibers and zero-carbon Eukosil fibers, and nylon is hollow nylon fiber;

[0160] The preparation method of the microcapsule emulsion of the anti-ultraviolet agent comprises:

[0161] S211, preparing a core material solution: uniformly mixing an anti-ultraviolet agent and deionized water in a mass ratio of 1:2.5 to obtain a core material solution;

[0162] S212, preparing a wall material solution: mixing porous cyclodextrin and deionized water in a mass ratio of 1:5.5, adding an emulsifier and a cross-linking agent, and continuing to mix uniformly to obtain a wall material solution;

[0163] S213, preparing a microcapsule emulsion: slowly dripping the core material solution into the wall material solution while stirring, so that the core material is gradually wrapped by the wall material, to obtain a microcapsule emulsion containing an anti-ultraviolet agent;

[0164] The anti-ultraviolet agent includes: a mixture of titanium oxide, zinc oxide, butyl methoxydibenzoylmethane and 2-ethylhexyl cyanoacrylate; the spray particle size of the spray treatment is 2nm; and the softener is purchased from outside.

[0165] Performance Testing

[0166] The smooth sun-proof knitted fabrics in Examples 1-4 and Comparative Examples 1-2 were sampled, and the density of the samples was measured using a density analyzer to calculate the coefficient of variation CV. The calculation formula for the coefficient of variation CV is as follows:

[0167]

[0168] Among them, σ is the standard deviation and μ is the mean;

[0169] The heat shielding rate was measured by a heat shielding rate tester; the contact coolness coefficient was measured by a KES-F7 coolness tester; the drape coefficient was measured according to GB / T 8942 “Textiles—Determination of drape”; the air permeability was measured according to GB / T 5453-1997 “Determination of air permeability of textiles”; the UV resistance was tested according to GB / T 18830 “Evaluation of UV protection performance of textiles”. The test results are shown in Table 1.

[0170] Table 1

[0171] Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Coefficient of variation (%) 12.7 12.8 12.1 12.3 15.7 14.1 Heat shielding rate (%) 10％ 12％ 12％ 13％ 2％ 3％ Contact coolness coefficient (J / cm·s) 0.36 0.28 0.30 0.37 0.21 0.18 Overhang coefficient 0.5 0.6 0.3 0.2 0.8 0.8 Air permeability (mm / s) 235 237 242 249 167 198 UPF 50+ 50+ 60+ 60+ 30+ 50+

[0172] It can be seen from Table 1 that the various properties of the smooth sun-proof knitted fabrics in Examples 1-4 are better than those in Comparative Examples 1-2, indicating that the smooth sun-proof knitted fabrics in the embodiments of the present invention have better performance in terms of air permeability, comfort, sun protection and other aspects; Compared with Comparative Example 1, Comparative Example 2 adds a sun-proof layer 110 and therefore has better sun protection, but since hollow nylon fiber is not used, its air permeability is worse than that of Example 1; The smooth sun-proof knitted fabrics in Examples 3-4 have better performance than the smooth sun-proof knitted fabrics in Examples 1-2, which may be due to the use of more suitable parameters in the preparation method of Examples 3-4, especially the drape coefficient, which may be due to the use of the softener provided in the present invention in Examples 3-4, so it has better softness, thereby obtaining a lower drape coefficient.

[0173] In summary, the smooth sun-proof knitted fabric and preparation method thereof of the present invention further enhance the sun-proof performance of the fabric by arranging a sun-proof layer on the fabric body; the smooth sun-proof knitted fabric is formed by weaving hollow nylon fibers with ammonia and cellulose fibers, and each fiber of the hollow nylon fibers stores air to form an air protection layer, which makes the fiber feel softer and has a fluffy texture; in the preparation process, through the adjustment of the yarn and tissue structure, the front side is designed with a micro-texture, which not only gives the fabric a three-dimensional sense and a sense of layering, but also provides rich visual effects and texture; the back side has a smoother skin-friendly tissue structure, a flat design, and improved wearing comfort.

[0174] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A soft and sun-proof knitted fabric, characterized in that: include: A fabric body (100) and a sunscreen layer (110) arranged on the surface of the fabric body (100), wherein the pattern of the fabric body (100) is cyclical in eight directions, in a sequence from top to bottom. The first-line structure of the fabric body (100) is sequentially a floating thread structure, a loop structure, a loop structure, and a floating thread structure; The weave structure of the second route of the fabric body (100) is loop weave, floating thread weave, floating thread weave, and loop weave in sequence; The weave structures of the third route of the fabric body (100) are floating weave, floating weave, loop weave, and loop weave in sequence; The fourth weave structure of the fabric body (100) is loop weave, loop weave, floating weave, and floating weave in sequence; The fabric body (100) has a front side and a back side opposite to each other, the front side has a texture structure, and the back side has a microporous structure; The sunscreen layer (110) is arranged on the front side of the fabric body (100), and the sunscreen layer (110) comprises microcapsules containing an anti-ultraviolet agent.

2. The smooth sun-proof knitted fabric according to claim 1, characterized in that: The first path of the fabric body (100) and the second path of the fabric body (100) are made of nylon and spandex; The third path of the fabric body (100) and the fourth path of the fabric body (100) are made of nylon, spandex, and cellulose fibers.

3. The smooth sun-proof knitted fabric according to claim 2, characterized in that: The nylon is a hollow nylon fiber; or / and The spandex is a spandex coated yarn; or / and The cellulose fiber includes at least one of modal fiber and eco-friendly fiber.

4. The smooth sun-proof knitted fabric according to claim 1, characterized in that: The height of the texture structure is 0.1mm-0.5mm; or / and The pore size of the microporous structure is 50 μm-150 μm.

5. The smooth sun-proof knitted fabric according to any one of claims 1 to 4, characterized in that: The coefficient of variation CV of the smooth sun-proof knitted fabric is 12%-13%; or / and The heat shielding rate of the soft and sun-proof knitted fabric is greater than 50%; or / and The contact coolness coefficient of the soft and sun-proof knitted fabric is greater than 0.28 J / cm·s; or / and The air permeability coefficient of the smooth sun-proof knitted fabric is greater than 220 mm / s.

6. A method for preparing the smooth sun-proof knitted fabric according to any one of claims 1 to 5, characterized in that: include: S100, preparing materials: preparing nylon, spandex and cellulose fibers respectively; S200, weaving: using the nylon, the spandex and the cellulose fiber to perform weaving treatment and post-finishing treatment in sequence to obtain the smooth sun-proof knitted fabric; Wherein, in said S200, said weaving process comprises: The first path and the second path of the fabric body (100) are subjected to jacquard weaving processing by using the nylon and the spandex; The third and fourth paths of the fabric body (100) are woven through the nylon, spandex and cellulose fiber mesh; The post-finishing treatment includes: pre-shrinking treatment, heat setting treatment, dyeing treatment, softening treatment, and anti-ultraviolet treatment in sequence.

7. The preparation method according to claim 6, characterized in that: In the S200, The pre-shrinking temperature is 80°C-120°C; or / and The temperature of the heat setting treatment is 160°C-200°C.

8. The preparation method according to claim 6, characterized in that: In the S100, The nylon is hollow nylon fiber.

9. The preparation method according to claim 6, characterized in that: The softening treatment is soaking treatment with a softener; The anti-ultraviolet treatment is performed by spraying a microcapsule emulsion of an anti-ultraviolet agent.

10. The preparation method according to claim 9, characterized in that: The softener comprises: 2wt.%-5wt.% of a cationic quaternary ammonium salt softener, 1wt.%-3wt.% of a modified silicone oil softener, 0.5wt.%-2wt.% of a nonionic surfactant, 0.1wt.%-0.5wt.% of an antioxidant, 0.1wt.%-0.3wt.% of a stabilizer and the balance of deionized water; The preparation method of the softener comprises: S201, slowly adding the deionized water to the cationic quaternary ammonium salt softener, stirring to fully dissolve the cationic quaternary ammonium salt softener, to obtain a cationic quaternary ammonium salt softener solution; S202, slowly adding the modified silicone oil softener to the cationic quaternary ammonium salt softener solution, while maintaining stirring, to obtain a first mixed solution; S203, slowly adding the nonionic surfactant to the first mixed solution while continuously stirring to obtain a second mixed solution; S204, adding the antioxidant and the stabilizer to the second mixed solution, stirring evenly, to obtain the softener.

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