High-elastic double-sided knitted fabric and preparation process thereof

Abstract

The invention relates to the field of composite nylon knitted fabrics, in particular to a high-elastic double-sided knitted fabric and a preparation process thereof. The invention relates to a preparation process of a high-elastic double-sided knitted fabric. The preparation process comprises the following steps: deoiling gray cloth; the gray cloth is formed by weaving nylon 66 and spandex through a double-sided speed weft knitting circular knitting machine; dyeing the deoiled gray cloth to obtain dyed cloth; drying the dyed cloth, and padding the finishing liquid to obtain padding cloth; the finishing liquid is prepared from polydimethylsiloxane, amino silicon oil, a nonionic surfactant, a polyurethane emulsion, a plant extracting solution and water, and the plant extracting solution is at least prepared from mint, aloe and seaweed; and drying and padding the cloth, and tentering and shaping to obtain the high-elastic double-sided knitted fabric. The fabric has the advantages that the moisture absorption and ventilation effects of the fabric are enhanced, and the fabric is softer and more fit.

Description

Technical Field

[0001] The present application relates to the field of composite nylon knitted fabrics, and more specifically, to a high-elastic double-sided knitted fabric and a preparation process thereof. Background Art

[0002] As yoga becomes more and more popular around the world, it is becoming more and more popular as a form of exercise that promotes physical and mental health and improves the quality of life. During yoga practice, the body generates a lot of heat and sweat, so the requirements for clothing fabrics are becoming more and more stringent. In particular, the moisture absorption and breathability of the fabric are directly related to the practitioner's comfort and sports performance.

[0003] In yoga practice, practitioners need to perform a series of complex and varied postures, which are often accompanied by large-scale stretching and twisting, and have extremely high requirements for the elasticity and freedom of clothing fabrics. However, more importantly, continuous exercise will increase the body temperature, open the skin pores, and sweat will be discharged in large quantities. If the fabric has poor moisture absorption and breathability, sweat will be retained on the skin surface, which will not only affect the practitioner's comfort, but may also cause skin problems and even affect the safety and effectiveness of exercise.

[0004] Therefore, there is an urgent need for a more moisture-absorbent and breathable fabric on the market. Summary of the invention

[0005] In order to enhance the moisture absorption and breathability of fabrics and make the fabrics softer and fitter, the present application provides a high-elastic double-sided knitted fabric and a preparation process thereof.

[0006] In a first aspect, the present application provides a preparation process of a high-elastic double-sided knitted fabric, which adopts the following technical scheme: A preparation process of a high-elastic double-sided knitted fabric, comprising the following steps: Step 1: Degrease the grey cloth; the grey cloth is woven from nylon 66 and spandex by a double-sided high-speed weft knitting circular machine; Step 2: dyeing the degreased grey cloth to obtain dyed cloth; Step 3: drying the dyed fabric, and padding the fabric with a finishing solution to obtain a padded fabric; wherein the finishing solution comprises 5-10 g / L polydimethylsiloxane, 5-10 g / L amino silicone oil, 1-5 g / L nonionic surfactant, 5-15 g / L polyurethane emulsion, 5-15 g / L plant extract, and water; the plant extract is prepared from at least mint, aloe, and seaweed, and the preparation mass ratio of mint, aloe, and seaweed is (0.3-0.7):(0.8-1.2):(0.8-1.2); Step 4: Dry the soaked and rolled fabric, stretch and shape it to obtain a high-elastic double-sided knitted fabric.

[0007] The fabric provided in this application uses nylon 66 fiber as the base material, with spandex, and is woven using a double-sided weft knitting circular machine, and then undergoes dyeing, finishing and other processes to obtain the finished fabric. It is used for yoga clothing and other clothing fabrics. The fabric has the characteristics of moisture absorption and breathability, medium-strength four-way stretch, fluffy and soft, skin-friendly and comfortable, soft and nude feeling, and 360-degree free stretch, which can meet the modern consumers' pursuit of healthy life quality and wearing experience.

[0008] By adopting the above technical solution, the plant extract is prepared from mint, aloe vera and seaweed, and the plant extract quickly penetrates into the fibers of the dyed fabric and firmly adheres. The hydrophilic components in aloe vera and seaweed can significantly improve the hydrophilicity of the fabric, making it easier for the fabric to absorb and retain moisture. At the same time, these components can also form a smooth hygroscopic film on the surface of the fabric, reducing the accumulation of water on the surface of the fabric and the evaporation resistance. The active ingredients in the plant extract can also adhere to the surface of the fabric through chemical reaction or physical adsorption to form a thin hydrophilic film. This film can increase the contact area between the fabric and water molecules and improve the hygroscopicity of the fabric.

[0009] In addition, polysaccharides, saponins and other ingredients in special plant extracts may penetrate into the gaps between fibers of the fabric, improve the bonding between fibers, and form more tiny channels between fibers. These channels help the rapid transfer and evaporation of water, thereby improving the breathability and quick-drying properties of the fabric.

[0010] Ingredients such as menthol in plant extracts can give the fabric a cool feeling. Although this does not directly enhance moisture absorption and breathability, its cool feeling may help reduce the feeling of stuffiness when worn, indirectly improving wearing comfort and improving the user's overall experience.

[0011] Through synergistic cooperation, plant extracts can significantly improve the moisture absorption, breathability and wearing comfort of fabrics. This improvement is not only reflected in the physical properties, the cooling feeling and moisturizing properties can reduce the stuffiness when wearing in summer, and also improve the sensory experience of users.

[0012] Moreover, the active ingredients in plant extracts, such as polysaccharides in aloe vera, polysaccharides and proteins in seaweed, and certain alcohols or esters in mint, can be adsorbed on the surface of fabric fibers. These ingredients can reduce the surface tension of the fibers, making it easier for the fibers to expand their surface and stretch their length, thereby making the fabric fluffy and full, and thus creating a soft feel. Some ingredients in plant extracts can also form a lubricating layer between the fibers, reducing the friction coefficient between the fibers, making it easier for the fibers to slide and stretch in the fabric, and further improving the softness. The moisturizing factors contained in aloe vera, seaweed, etc. can also penetrate into the fibers, maintain the moisture content of the fibers, enhance the toughness of the fibers, and help the fibers to better recover to their original state after being acted upon by external forces, thereby improving elasticity.

[0013] Preferably, the finishing liquid includes 8 g / L polydimethylsiloxane, 5 g / L amino silicone oil, 3 g / L nonionic surfactant, 10 g / L polyurethane emulsion, 12 g / L plant extract, and water.

[0014] By adopting the above technical scheme, the dosage and coordination relationship of each raw material in the finishing liquid is further limited, which can not only give full play to the coordination effect of the plant extract and the dyed fabric, but also make the role of other raw materials more fully exerted, thereby enhancing the treatment effect on the fabric.

[0015] Preferably, the method for preparing the plant extract comprises the following steps: Step a: mixing mint, aloe vera and seaweed in a preparation mass ratio of (0.3-0.7):(0.8-1.2):(0.8-1.2), and soaking in water for 4-6 hours to obtain a plant mixture; Step b: treating the plant mixture by ultrasonic dispersion at 55-65° C. and 500-600 W for 20-30 min to obtain a plant treatment product; Step c: solid-liquid separation of the plant treated material, the liquid portion being the plant extract.

[0016] By adopting the above technical solution, the preparation of the plant extract is further limited to be carried out under ultrasonic conditions of 55-65°C and 500-600W, so that more effective active substances of mint, aloe vera and seaweed can be extracted and the fabric can be treated more fully.

[0017] Preferably, the mint, aloe vera and seaweed are mixed in a preparation mass ratio of 0.5:1:1.

[0018] Preferably, the nonionic surfactant includes at least one or more of secondary alcohol polyoxyethylene ether, sodium stearate, Tween, and fatty alcohol polyoxyethylene ether.

[0019] Preferably, the nonionic surfactant is secondary alcohol polyoxyethylene ether or Tween, and the dosage of secondary alcohol polyoxyethylene ether or Tween is (0.8-1.2): (0.8-1.2).

[0020] By adopting the above technical scheme, the dosage relationship of secondary alcohol polyoxyethylene ether and Tween is further limited. The synergistic combination can reduce the usage of each to achieve the same finishing effect, thereby reducing costs and reducing the impact on the environment. The emulsification ability of secondary alcohol polyoxyethylene ether combined with the dispersibility of Tween can form more stable and finer emulsion droplets, thereby improving the emulsification efficiency. The strong permeability of secondary alcohol polyoxyethylene ether helps surfactants such as Tween to penetrate deeper into the fabric fibers, allowing the finishing agent to play a better role.

[0021] In a second aspect, the present application provides a high-elastic double-sided knitted fabric.

[0022] Preferably, the specification of nylon 66 is 40D / 51F DTY, and the specification of spandex is 40D.

[0023] Preferably, the grey cloth comprises 75-85% nylon 66 and 15-25% spandex in terms of mass percentage.

[0024] By adopting the above technical solution, this application uses unique high-performance ultra-fine denier nylon 66 40D / 51F DTY fiber as the base material, matched with 40D spandex. Nylon 66DTY yarn adopts a unique polymerization process, which gives the yarn excellent tensile strength, excellent elasticity and recovery. Through special false twisting technology, the ultra-multi-strand 51F is blown and dotted, which greatly enhances the fluffiness and wear resistance of the yarn. Nylon 66 yarn can present a soft touch and moderate gloss similar to natural fibers. When interwoven with 40D spandex, the fabric has extraordinary anti-fatigue performance, unique stability and durability.

[0025] Relying on precise yarn matching ratios, weaving techniques and unique post-processing, the fabric can achieve a seamless fit wearing experience, giving the fabric the dry, breathable and skin-friendly properties of natural cotton fibers, while also taking into account the elastic, plump and fleshy touch experience, just like the second layer of skin on the human body.

[0026] The synergy of specially selected spandex and nylon 66 gives the fabric excellent four-way stretch performance, effectively matching the dynamic needs of the human body.

[0027] In summary, this application has the following beneficial effects: 1. Extraordinary nude feeling: Relying on precise yarn matching ratio, weaving technology and unique post-processing, it achieves seamless and fitting wearing feeling, just like the second layer of human skin. The fabric is moisture-absorbent and breathable, medium-strength four-way stretch, fluffy and soft, skin-friendly and comfortable, soft and nude feeling, 360-degree free stretch, which can meet the modern consumers' pursuit of healthy life quality and wearing experience.

[0028] 2. All-round elasticity: The synergy of specially selected spandex and nylon 66 gives the fabric excellent four-way stretch performance, effectively matching the dynamic needs of the human body.

[0029] 3. Ecological compatibility: The whole process advocates green production strategies, reduces chemical consumption, and promotes the sustainable development of the textile industry.

[0030] 4. Significant moisture absorption and breathability: Special plant extracts can significantly improve the moisture absorption, breathability and wearing comfort of fabrics. This improvement is not only reflected in the physical properties, but also in the cooling and moisturizing properties, which can reduce the stuffiness when wearing in summer and also improve the sensory experience of users. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the embodiments.

[0032] The raw materials used in the following examples and comparative examples are all commercially available products. Example

[0033] Example 1 A preparation process of a high-elastic double-sided knitted fabric comprises the following steps: Step 1: Degreasing the grey cloth: The adopted Sjoma oil removal machine is matched with the new ultrasonic instrument to carry out deeper treatment on the grey cloth at 90℃, so that the impurities on the cloth surface can be removed more cleanly, the shrinkage of the grey cloth can be more uniform, and the specifications can be more stable; auxiliary vacuum suction during oil removal can better ensure the flatness of the cloth surface.

[0034] The grey cloth is made of nylon 66 and spandex woven by a high-precision 36G double-sided high-speed weft knitting circular machine.

[0035] The specification of nylon 66 is 40D / 51F FD DTY, and the specification of spandex is 40D.

[0036] The grey fabric comprises 81% nylon 66 and 19% spandex by mass percentage.

[0037] Step 2: Dyeing the degreased grey cloth to obtain dyed cloth.

[0038] Danny Technology Dyeing Vat has the world's leading dyeing machine R&D and manufacturing technology, and uses environmentally friendly dyes throughout the process to ensure that the colors are long-lasting and bright and safe for the human body. Danny Dyeing Vat's unique dyeing system always controls the dye liquid in the dyeing vat in all directions to ensure that it can be evenly colored, thereby achieving excellent and stable dyeing effects. After multi-faceted debugging, the 107℃ dyeing process that is more suitable for the characteristics of this fabric is used for dyeing, making the fabric feel fuller, softer, and more cost-effective.

[0039] Step 3: Dry the dyed fabric at 120°C, roll it, and then pad it with the finishing liquid to obtain a padded fabric.

[0040] The rolling ratio is 70%, the dipping and rolling working fluid adopts a one-dipping-one-rolling method, the vehicle speed is 30m / min, and the temperature of the working fluid is 25℃.

[0041] The finishing liquid includes 8g / L polydimethylsiloxane, 5g / L amino silicone oil, 3g / L nonionic surfactant, 10g / L polyurethane emulsion, 12g / L plant extract and water. The finishing liquid is obtained by mixing various raw materials until they are uniform.

[0042] The nonionic surfactants are secondary alcohol polyoxyethylene ether and Tween-80, the dosage of secondary alcohol polyoxyethylene ether is 1.5 g / L, and the dosage of Tween-80 is 1.5 g / L.

[0043] Polyurethane emulsions are commercially available. This embodiment uses cationic polyurethane emulsion TPU86 purchased from Liaoning Hengxing Fine Chemical Co., Ltd.

[0044] The plant extract is prepared from mint, aloe vera and seaweed.

[0045] Specifically, the preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 0.5:1:1 and chop them.

[0046] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0047] Step b: treating the plant mixture by ultrasonic dispersion at 60° C. and 550 W for 25 min to obtain a plant treated material.

[0048] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0049] Step 4: Dry the padded fabric at 120°C, stretch and shape it to obtain a high-elastic double-sided knitted fabric.

[0050] Example 2 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The finishing liquid includes 5g / L polydimethylsiloxane, 10g / L amino silicone oil, 1g / L non-ionic surfactant, 5g / L polyurethane emulsion, 5g / L plant extract and water.

[0051] The nonionic surfactants are secondary alcohol polyoxyethylene ether and Tween-80, the dosage of secondary alcohol polyoxyethylene ether is 0.4 g / L, and the dosage of Tween-80 is 0.6 g / L.

[0052] The preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 0.3:0.8:1.2 and chop them.

[0053] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 4 hours to obtain a plant mixture.

[0054] Step b: treating the plant mixture by ultrasonic dispersion at 55° C. and 500 W for 30 min to obtain a plant treated material.

[0055] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0056] Example 3 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The finishing liquid includes 10g / L polydimethylsiloxane, 5g / L amino silicone oil, 5g / L non-ionic surfactant, 15g / L polyurethane emulsion, 15g / L plant extract and water.

[0057] The nonionic surfactants are secondary alcohol polyoxyethylene ether and Tween-80, the dosage of secondary alcohol polyoxyethylene ether is 3g / L, and the dosage of Tween-80 is 2g / L.

[0058] The preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 0.7:1.2:0.8 and chop them.

[0059] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 6 hours to obtain a plant mixture.

[0060] Step b: treating the plant mixture by ultrasonic dispersion at 65° C. and 600 W for 20 min to obtain a plant treated material.

[0061] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0062] Example 4 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 0.5:1:1 and chop them.

[0063] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0064] Step b: treating the plant mixture by ultrasonic dispersion at 80° C. and 550 W for 25 min to obtain a plant treated material.

[0065] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0066] Example 5 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 0.5:1:1 and chop them.

[0067] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0068] Step b: treating the plant mixture by ultrasonic dispersion at 25° C. and 550 W for 25 min to obtain a plant treatment product.

[0069] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0070] Example 6 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 0.5:1:1 and chop them.

[0071] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0072] Step b: treating the plant mixture by ultrasonic dispersion at 60° C. and 950 W for 25 min to obtain a plant treated material.

[0073] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0074] Example 7 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 0.5:1:1 and chop them.

[0075] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0076] Step b: treating the plant mixture by ultrasonic dispersion at 60° C. and 50 W for 25 min to obtain a plant treated material.

[0077] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0078] Comparative Example Comparative Example 1 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The plant extract is prepared from pepper, aloe vera and seaweed.

[0079] That is, the preparation method of the plant extract comprises the following steps: Step a: Mix pepper, aloe vera and seaweed in a preparation mass ratio of 0.5:1:1 and chop them.

[0080] The mass ratio of the total mass of pepper, aloe vera and seaweed to water is 1:3. The pepper, aloe vera and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0081] Step b: treating the plant mixture by ultrasonic dispersion at 60° C. and 550 W for 25 min to obtain a plant treated material.

[0082] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0083] Comparative Example 2 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The plant extract is prepared from mint, cactus and seaweed.

[0084] That is, the preparation method of the plant extract comprises the following steps: Step a: Mix mint, cactus and seaweed in a preparation mass ratio of 0.5:1:1 and chop them into small pieces.

[0085] The mass ratio of the total mass of mint, cactus and seaweed to water is 1:3. The mint, cactus and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0086] Step b: treating the plant mixture by ultrasonic dispersion at 60° C. and 550 W for 25 min to obtain a plant treated material.

[0087] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0088] Comparative Example 3 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The plant extract is prepared from mint, aloe vera and lavender.

[0089] That is, the preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and lavender in a preparation mass ratio of 0.5:1:1 and chop them.

[0090] The mass ratio of the total mass of mint, aloe vera and lavender to water is 1:3. The mint, aloe vera and lavender are soaked in water for 5 hours to obtain a plant mixture.

[0091] Step b: treating the plant mixture by ultrasonic dispersion at 60° C. and 550 W for 25 min to obtain a plant treated material.

[0092] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0093] Comparative Example 4 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: That is, the preparation method of the plant extract comprises the following steps: Step a: Mix mint, aloe vera and seaweed in a preparation mass ratio of 1.5:0.5:0.5 and chop them.

[0094] The mass ratio of the total mass of mint, aloe vera and seaweed to water is 1:3. The mint, aloe vera and seaweed are soaked in water for 5 hours to obtain a plant mixture.

[0095] Step b: treating the plant mixture by ultrasonic dispersion at 60° C. and 550 W for 25 min to obtain a plant treated material.

[0096] Step c: filtering the processed plant material to separate the solid from the liquid, wherein the liquid portion is the plant extract.

[0097] Comparative Example 5 A preparation process of a high-elastic double-sided knitted fabric, which is different from that of Example 1 in that: The finishing liquid includes 8g / L polydimethylsiloxane, 5g / L amino silicone oil, 3g / L nonionic surfactant, 10g / L polyurethane emulsion and water. The finishing liquid is obtained by mixing various raw materials until they are uniform.

[0098] Performance testing 1. Air permeability: Referring to GB / T5453-1997 "Determination of Air Permeability of Textile Fabrics", the air permeability of the high elastic double-sided knitted fabrics of Examples 1-7 and Comparative Examples 1-5 was tested, and the air flow rate vertically passing through a given area of ​​the sample within a certain period of time was measured, and the results were recorded in Table 1.

[0099] 2. Hygroscopicity: According to the national standard GB / T21655.1-2008 "Evaluation of Hygroscopicity and Quick-drying Part 1: Single Item Combination Test Method", the hygroscopicity of the high elastic double-sided knitted fabrics of Examples 1-7 and Comparative Examples 1-5 was tested, and the water absorption rate was recorded in Table 1.

[0100] 3. Hand feel evaluation: 10 experienced masters were selected to evaluate the hand feel of the high elastic double-sided knitted fabrics of Examples 1-7 and Comparative Examples 1-5. The hand feel evaluation mainly focused on softness, elasticity, and coolness. The score was 0-10, and 6 points or more were considered to be qualified in softness and elasticity. The closer to 10 points, the softer / better elasticity; the closer to 0 points, the stiffer / worse elasticity.

[0101] The softness / elasticity was measured using the average score of 10 experienced masters as the group result and is recorded in Table 1.

[0102] Table 1 According to the comparison of the test data in Table 1, the high elastic double-sided knitted fabrics of Examples 1-7 are significantly better than those of Comparative Example 5 in terms of air permeability, moisture absorption, softness and elasticity. From the data, it can be seen that whether the finishing liquid used for the fabric contains plant extract has a very obvious difference in the treatment effect of the fabric; the plant extract can indeed effectively enhance the air permeability and moisture absorption effect, and can make the fabric feel softer and more elastic.

[0103] Comparative Examples 1-3 are based on Example 1, and the special combination of mint, aloe and seaweed in the plant extract is destroyed; Comparative Example 4 is based on Example 1, and the specific dosage matching relationship of mint, aloe and seaweed in the plant extract is destroyed. According to the test data in Table 1, the fabric of Example 1 has better air permeability, higher water absorption rate and better hand feel than that of Comparative Examples 1-4. It shows that after the special combination of mint, aloe and seaweed is destroyed, Comparative Examples 1-4 cannot give full play to the special matching effect between the three, so that the effects of the moisture absorption and air permeability, hand feel and other aspects of the fabric are significantly reduced, and cannot play a good role; therefore, it is necessary to strictly limit the types and dosage matching relationships of plant extracts.

[0104] Examples 4-5 are based on Example 1, but the temperature of step b is changed; Examples 6-7 are based on Example 1, but the ultrasonic power of step b is changed. According to the test data in Table 1, the performance of the high-elastic double-sided knitted fabrics in Examples 4-7 has declined in various aspects. In other words, if the parameter conditions for extracting mint, aloe vera and seaweed in step b can be further limited, more effective active substances can be extracted, thereby achieving a better treatment effect on the fabric.

[0105] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A preparation process of a high-elastic double-sided knitted fabric, characterized in that: The following steps are involved: Step 1: Degrease the grey cloth; the grey cloth is woven from nylon 66 and spandex by a double-sided high-speed weft knitting circular machine; Step 2: dyeing the degreased grey cloth to obtain dyed cloth; Step 3: drying the dyed fabric, and padding the fabric with a finishing solution to obtain a padded fabric; wherein the finishing solution comprises 5-10 g / L polydimethylsiloxane, 5-10 g / L amino silicone oil, 1-5 g / L nonionic surfactant, 5-15 g / L polyurethane emulsion, 5-15 g / L plant extract, and water; the plant extract is prepared from at least mint, aloe, and seaweed; and the preparation mass ratio of mint, aloe, and seaweed is (0.3-0.7): (0.8-1.2): (0.8-1.2); Step 4: Dry the soaked and rolled fabric, stretch and shape it to obtain a high-elastic double-sided knitted fabric.

2. The preparation process of the high-elastic double-sided knitted fabric according to claim 1, characterized in that: The finishing liquid comprises 8 g / L polydimethylsiloxane, 5 g / L amino silicone oil, 3 g / L nonionic surfactant, 10 g / L polyurethane emulsion, 12 g / L plant extract and water.

3. The preparation process of the high-elastic double-sided knitted fabric according to claim 1, characterized in that: The preparation method of the plant extract comprises the following steps: Step a: mixing mint, aloe vera and seaweed according to a preparation mass ratio of (0.3-0.7): (0.8-1.2): (0.8-1.2), and soaking in water for 4-6 hours to obtain a plant mixture; Step b: treating the plant mixture by ultrasonic dispersion at 55-65° C. and 500-600 W for 20-30 min to obtain a plant treatment product; Step c: solid-liquid separation of the plant treated material, the liquid portion being the plant extract.

4. The preparation process of the high-elastic double-sided knitted fabric according to claim 3, characterized in that: The mint, aloe and seaweed are mixed in a preparation mass ratio of 0.5:1:

1.

5. The preparation process of the high-elastic double-sided knitted fabric according to claim 1, characterized in that: The nonionic surfactant at least includes a mixture of one or more of secondary alcohol polyoxyethylene ether, sodium stearate, Tween, and fatty alcohol polyoxyethylene ether.

6. The process for preparing the high-elastic double-sided knitted fabric according to claim 5, characterized in that: The nonionic surfactant is secondary alcohol polyoxyethylene ether and Tween, and the dosage of secondary alcohol polyoxyethylene ether and Tween is (0.8-1.2): (0.8-1.2).

7. A high-elastic double-sided knitted fabric obtained by the preparation process of the high-elastic double-sided knitted fabric according to any one of claims 1 to 6.

8. The high elastic double-sided knitted fabric according to claim 7, characterized in that: The specification of the nylon 66 is 40D / 51F DTY, and the specification of the spandex is 40D.

9. The high elastic double-sided knitted fabric according to claim 7, characterized in that: The grey cloth comprises 75-85% nylon 66 and 15-25% spandex in terms of mass percentage.

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