A fabric and its preparation method

Abstract

This invention relates to fabrics, and more particularly to a fabric and its preparation method; a fabric comprising a surface layer and an inner layer, the surface layer and the inner layer being joined by a joint bonding method; the surface layer is woven from hydrophobic yarn; the inner layer is woven from double-twisted yarn; the double-twisted yarn is composed of constant-temperature polyester and modified yarn; the modified yarn is prepared from raw materials comprising the following parts by weight: 50-70 parts cotton fiber, 0.5-2 parts far-infrared ceramic powder, 0.5-2 parts volcanic rock powder, 10-20 parts silk fibroin polypeptide, and 5-15 parts sericin; the inner layer uses cotton yarn and constant-temperature polyester that has undergone moisture-absorbing treatment, possessing excellent moisture absorption, warmth retention, and constant-temperature functions; the cotton fibers constituting the cotton yarn contain far-infrared ceramic powder and volcanic rock powder, possessing both far-infrared heating and heat storage functions; the surface layer is woven from hydrophobic yarn, the material itself being hydrophobic and absorbing and diffusing moisture through its own capillary effect, facilitating the discharge of water vapor emitted from the inner layer through the surface layer.

Description

Technical Field

[0001] This invention relates to fabrics, and more particularly to a fabric and a method for preparing the same. Background Technology

[0002] Warmth retention is a fundamental function of fabrics. Everyday clothing fabrics achieve their warmth-retaining function through the moisture-absorbing, non-thermal-conducting, and air-retaining properties of the yarns. Sportswear fabrics, on the other hand, generally achieve their sweat-wicking and quick-drying functions through hydrophobicity and breathability. Therefore, it's clear that the advantages of these two types of fabrics are difficult to reconcile.

[0003] In some applications, we have found that fabrics need to combine moisture absorption and wicking, quick-drying, and even temperature control and heat retention. Currently, there are no fabrics that combine these functions. Summary of the Invention

[0004] In view of the shortcomings of the prior art, one of the objectives of the present invention is to provide a fabric that combines the functions of warmth retention, perspiration wicking, quick drying, constant temperature and heat storage.

[0005] The second objective of this invention is to provide a method for preparing a fabric.

[0006] One of the objectives of this invention is achieved through the following technical solution:

[0007] A fabric comprising a surface layer and an inner layer, the surface layer and the inner layer being joined together by a joint bonding method;

[0008] The surface layer is woven with hydrophobic yarn;

[0009] The inner layer is made of double-twisted yarn;

[0010] The double-twisted yarn is composed of constant temperature polyester and modified yarn;

[0011] The modified yarn is prepared from raw materials comprising the following parts by weight:

[0012] 50-70 parts cotton fiber, 0.5-2 parts far-infrared ceramic powder, 0.5-2 parts volcanic rock powder, 10-20 parts silk fibroin polypeptide and 5-15 parts sericin.

[0013] Preferably, the hydrophobic yarn is a man-made fiber with a "Z" shaped fiber and an "X" shaped fiber cross-section.

[0014] Preferably, the surface of the thermostatic polyester is coated with a moisture-absorbing finishing agent. As is known, thermostatic polyester is a type of synthetic filament with hydrophobic and oleophilic properties. In this invention, the structure needs to come into contact with human skin, so the moisture-absorbing properties help to absorb sweat. In addition, the oleophilicity of the surface of the thermostatic polyester is reduced after coating with a moisture-absorbing finishing agent, which can reduce the probability of sebum secreted by human skin adhering to the thermostatic polyester.

[0015] Preferably, the hydrophobic yarn has a fineness of 90-110D (denier), the constant-temperature polyester has a fineness of 45-55D, and the modified yarn has a fineness of 100S (English count). The main body of the modified yarn is cotton yarn obtained by spinning and twisting cotton fibers. 100S is a conventional specification in cotton yarn production and is easy to produce. The hydrophobic yarn and constant-temperature polyester, being man-made yarns, can be made to any fineness by adjusting the extrusion equipment parameters. Using constant-temperature polyester with a similar fineness (100S is approximately equal to 50D) and the modified yarn in a double twist ensures that the forces on both are similar when twisted and compressed, resulting in relatively uniform mechanical strength throughout the double twisted yarn after twisting. The hydrophobic yarn is woven into the outer layer, and the double twisted yarn into the inner layer. Using yarns with similar fineness ensures that the mesh density on both sides is similar, facilitating the implementation of a joint splicing method.

[0016] The second objective of this invention is achieved through the following technical solution:

[0017] A method for preparing a fabric includes the following steps:

[0018] S1 is composed of cotton fiber, far-infrared ceramic powder, volcanic rock powder, silk fibroin polypeptide, and sericin.

[0019] S2 involves immersing cotton fibers in a 15-20 wt% acetic acid aqueous solution for 3-7 minutes to obtain etched fibers. The acetic acid etches numerous pores onto the surface of the cotton fibers, facilitating powder adhesion.

[0020] S3 removes the etched fibers and washes them with clean water, then drains them. This process removes acetic acid, preventing further corrosion of the cotton fibers.

[0021] S4 dissolves silk fibroin peptides in water at three times their own weight to obtain a silk fibroin peptide solution.

[0022] S5 involves adding the cleaned etched fibers, far-infrared ceramic powder, and volcanic rock powder to water at a weight of 10 times their combined weight for the first stirring (this refers to the weight of the cleaned etched fibers, not the weight of the cotton fibers in the raw materials). The first stirring is performed at a speed of 500-1000 rpm for 30-50 minutes. The purpose of this stirring is to quickly disperse the powder and allow it to enter the pores of the etched fibers. After the etched fibers are removed and drained, they are placed in a silk fibroin peptide solution for the second stirring. The second stirring is performed at a speed of 50-100 rpm for 5-15 minutes. The purpose of this stirring is to evenly coat the surface of the etched fibers with the silk fibroin peptide solution. After removing and air-drying, the heat-retaining fibers are obtained.

[0023] S6 spins and twists heat-storing fibers to obtain heat-storing yarn.

[0024] S7 dissolves sericin in three times its own weight of water to obtain a sericin solution. This sericin solution is then evenly coated onto the outer periphery of the heat-retaining yarn and air-dried to obtain modified yarn. The role of sericin is to transform the surface of the modified yarn to resemble that of real silk, giving it skin-friendly, antibacterial, and smooth properties.

[0025] S8 produces double-twisted yarn by twisting modified yarn and constant temperature polyester.

[0026] S9 weaves double-twisted yarn and hydrophobic yarn into the inner and outer layers respectively. During the weaving process, the inner and outer layers are combined by a joint splicing method to obtain the fabric.

[0027] Preferably, step 1 further includes calcining the far-infrared ceramic powder and volcanic rock powder to 500°C, immersing them in liquid nitrogen (the amount of liquid nitrogen being twice the sum of the weights of the far-infrared ceramic powder and volcanic rock powder), and then stirring at a speed of 2000-3000 r / min for 10-30 min, followed by air drying at room temperature. The significance of this is that rapid cooling causes large stone particles to break down, and stirring accelerates the particle-to-particle collision and further improves the fineness of the powder.

[0028] Preferably, the clean water used in step S3 is warm water with a temperature of 40-70℃. This is advantageous because it prevents the pores in the cotton fibers from shrinking when exposed to cold.

[0029] Preferably, the first stirring in step S5 further includes ultrasonic dispersion.

[0030] Preferably, the air-drying temperature in step S5 is 50-70℃. The role of the silk fibroin peptide is to utilize the carboxyl and amino groups on the peptide chain to bind with the hydroxyl groups on the cotton fiber, thereby improving the mechanical strength of the cotton yarn after acetic acid etching. Additionally, the silk fibroin peptide is used to form a film that fixes far-infrared ceramic powder and volcanic rock powder particles within the pores of the cotton yarn. Theoretically, the higher the temperature, the faster the drying speed; however, considering the temperature that the silk fibroin peptide chain can withstand (excessive temperature may cause chain breakage), 50-70℃ is chosen. Finally, the silk fibroin peptide film treated at this temperature is not easily soluble in water, facilitating subsequent washing of the fabric.

[0031] Preferably, the air-drying temperature in step S7 is 20-35℃. Since the pores of the cotton yarn are blocked by powder and silk fibroin peptides at this time, even if it shrinks when cooled, it will not affect its use. Furthermore, sericin is prone to denaturation and discoloration at high temperatures, so a lower air-drying temperature is used.

[0032] The beneficial effects of this invention are as follows: the inner layer uses cotton yarn and moisture-absorbing, temperature-regulating polyester, combining excellent moisture absorption, warmth retention, and temperature regulation functions; the cotton fibers constituting the cotton yarn contain far-infrared ceramic powder and volcanic rock powder, providing both far-infrared heating and heat storage functions; the outer layer is woven with hydrophobic yarn, which is itself hydrophobic and absorbs and diffuses moisture through its capillary effect, facilitating the expulsion of moisture from the inner layer through the surface. This invention utilizes far-infrared ceramic powder to emit far-infrared rays to promote blood circulation and volcanic rock powder to store heat, achieving a good heat retention effect, making it suitable for making sportswear for winter sports, aerobic exercise, yoga, jogging, and other sports. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the joint connection structure between the outer and inner layers in this invention;

[0034] Figure 2 This is a cross-sectional view of the hydrophobic yarn. Detailed Implementation

[0035] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0036] Example 1

[0037] S1 is weighed according to the following proportions: 55 parts cotton fiber, 0.7 parts far-infrared ceramic powder, 0.7 parts volcanic rock powder, 11 parts silk fibroin polypeptide, and 6 parts sericin. The hydrophobic yarn is a man-made fiber with a "Z" shaped fiber shape and an "X" shaped fiber cross-section (specifically using Dri Tech). TM Yarn, its cross-sectional diagram is shown in Figure 2 The constant-temperature polyester is coated with a moisture-absorbing finishing agent. The hydrophobic yarn has a fineness of 91D, the constant-temperature polyester has a fineness of 46D, and the modified yarn has a fineness of 100S. The far-infrared ceramic powder and volcanic rock powder both have a particle size of less than 200 mesh (that is, they can both pass through a 200-mesh sieve).

[0038] S2 immerses cotton fibers in a 16wt% acetic acid aqueous solution for 3.5 minutes to obtain etched fibers.

[0039] S3 removes the etched fiber and washes it with clean water, then drains it. The clean water used is warm water at a temperature of 45°C.

[0040] S4 dissolves silk fibroin peptides in water at three times their own weight to obtain a silk fibroin peptide solution.

[0041] In step S5, the cleaned etched fibers, far-infrared ceramic powder, and volcanic rock powder are added to water at a ratio of 10:1 (the sum of their weights) for the first stirring at 600 rpm for 35 minutes. Simultaneously, the mixture is ultrasonically dispersed at a frequency of 20 kHz and a power of 60 W / L. The etched fibers are then drained and placed in a silk fibroin polypeptide solution for a second stirring at 55 rpm for 6 minutes. Afterward, the fibers are air-dried to obtain heat-retaining fibers. The air-drying temperature in step S5 is 55°C.

[0042] S6 spins and twists heat-storing fibers to obtain heat-storing yarn.

[0043] S7 dissolves sericin in three times its own weight of water to obtain a sericin solution. The sericin solution is then evenly coated onto the outer periphery of the heat-retaining yarn and air-dried to obtain the modified yarn. The air-drying temperature is 21°C.

[0044] S8 produces double-twisted yarn by twisting modified yarn and constant temperature polyester.

[0045] S9 uses double-twisted yarn and hydrophobic yarn to form the inner and outer layers respectively. During the weaving process, the inner and outer layers are joined together using a joint splicing method (see the joint splicing structure). Figure 1 That is, when weaving the outer layer, the inner layer warp threads are lifted and interweave with the outer layer weft threads, while when weaving the inner layer, the outer layer warp threads are lowered and interweave with the inner layer weft threads, thus forming a joint connection of the two layers of fabric, and thus obtaining the fabric.

[0046] Example 2

[0047] S1 is weighed according to the following proportions: 65 parts cotton fiber, 1.7 parts far-infrared ceramic powder, 1.7 parts volcanic rock powder, 17 parts silk fibroin polypeptide, and 14 parts sericin. The hydrophobic yarn is a man-made fiber with a "Z" shaped fiber and an "X" shaped fiber cross-section. The constant-temperature polyester is coated with a moisture-absorbing finishing agent. The fineness of the hydrophobic yarn is 105D, the fineness of the constant-temperature polyester is 54D, and the fineness of the modified yarn is 100S. The particle size of the far-infrared ceramic powder and the volcanic rock powder is less than 200 mesh.

[0048] S2 immerses cotton fibers in a 19wt% acetic acid aqueous solution for 6 minutes to obtain etched fibers.

[0049] S3 removes the etched fiber and washes it with clean water, then drains it. The clean water used is warm water at a temperature of 68°C.

[0050] S4 dissolves silk fibroin peptides in water at three times their own weight to obtain a silk fibroin peptide solution.

[0051] In step S5, the cleaned etched fibers, far-infrared ceramic powder, and volcanic rock powder are added to water at a ratio of 10:1 (the sum of their weights) for the first stirring at 900 rpm for 45 minutes. Simultaneously, the mixture is ultrasonically dispersed at a frequency of 20 kHz and a power of 60 W / L. The etched fibers are then drained and placed in a silk fibroin polypeptide solution for a second stirring at 90 rpm for 14 minutes. Afterward, the fibers are air-dried to obtain heat-retaining fibers. The air-drying temperature in step S5 is 68°C.

[0052] S6 spins and twists heat-storing fibers to obtain heat-storing yarn.

[0053] S7 dissolves sericin in three times its own weight of water to obtain a sericin solution. The sericin solution is then evenly coated onto the outer periphery of the heat-retaining yarn and air-dried to obtain modified yarn. The air-drying temperature is 34°C.

[0054] S8 produces double-twisted yarn by twisting modified yarn and constant temperature polyester.

[0055] S9 weaves double-twisted yarn and hydrophobic yarn into the inner and outer layers respectively. During the weaving process, the inner and outer layers are combined by a joint splicing method to obtain the fabric.

[0056] Example 3

[0057] S1 is prepared by weighing 60 parts cotton fiber, 1.2 parts far-infrared ceramic powder, 1.2 parts volcanic rock powder, 15 parts silk fibroin polypeptide, and 12 parts sericin. The hydrophobic yarn is a man-made fiber with a "Z" shaped fiber and an "X" shaped fiber cross-section. The constant-temperature polyester is coated with a moisture-absorbing finishing agent. The hydrophobic yarn has a fineness of 100D, the constant-temperature polyester has a fineness of 50D, and the modified yarn has a fineness of 100S. The particle size of the far-infrared ceramic powder and the volcanic rock powder is less than 200 mesh.

[0058] S2 immerses cotton fibers in a 17wt% acetic acid aqueous solution for 5 minutes to obtain etched fibers.

[0059] S3 removes the etched fiber and washes it with clean water, then drains it. The clean water used is warm water at a temperature of 55°C.

[0060] S4 dissolves silk fibroin peptides in water at three times their own weight to obtain a silk fibroin peptide solution.

[0061] In step S5, the cleaned etched fibers, far-infrared ceramic powder, and volcanic rock powder are added to water at a ratio of 10:1 (the sum of their weights) for the first stirring at 700 rpm for 40 minutes. Simultaneously, the mixture is ultrasonically dispersed at a frequency of 20 kHz and a power of 60 W / L. The etched fibers are then drained and placed in a silk fibroin polypeptide solution for a second stirring at 70 rpm for 10 minutes. Afterward, the fibers are air-dried to obtain heat-retaining fibers. The air-drying temperature in step S5 is 60°C.

[0062] S6 spins and twists heat-storing fibers to obtain heat-storing yarn.

[0063] S7 dissolves sericin in three times its own weight of water to obtain a sericin solution. The sericin solution is then evenly coated onto the outer periphery of the heat-retaining yarn and air-dried to obtain modified yarn. The air-drying temperature is 30°C.

[0064] S8 produces double-twisted yarn by twisting modified yarn and constant temperature polyester.

[0065] S9 weaves double-twisted yarn and hydrophobic yarn into the inner and outer layers respectively. During the weaving process, the inner and outer layers are combined by a joint splicing method to obtain the fabric.

[0066] Example 4

[0067] Step 1 further includes calcining far-infrared ceramic powder and volcanic rock powder to 500°C, immersing them in liquid nitrogen (the amount of liquid nitrogen being twice the sum of the weights of the far-infrared ceramic powder and volcanic rock powder), stirring at 2500 r / min for 15 min, removing them and air-drying them at room temperature, and the remaining steps being the same as in Example 3.

[0068] Performance testing

[0069] The fabrics obtained in Example 3 were subjected to tests on their UV protection, moisture absorption and quick-drying properties, moisture wicking properties, color fastness to rubbing, color fastness to light, pilling, moisture content, and moisture regain.

[0070] The test methods and test results are shown in Table 1.

[0071] Table 1 Performance Test Table

[0072]

[0073]

[0074]

[0075] As shown in Table 1, the fabric obtained by this invention has excellent UV protection, moisture absorption and quick-drying properties, moisture wicking properties, color fastness to rubbing, color fastness to light, pilling resistance, moisture content, and moisture regain, which meet the requirements of relevant industry standards.

[0076] Thermal storage and constant temperature function experiment

[0077] Experimental objective: To verify whether the fabric obtained by this invention has the function of heat storage and constant temperature.

[0078] Experimental method: The fabrics obtained in Examples 1-4, as well as cotton fabric (made of cotton fiber) and quick-drying fabric (made of polyester fiber) of the same size (20cm*20cm) purchased from the market, were folded in half on both sides and a temperature sensor was placed in the center. The fabrics were then folded in half twice to obtain the experimental body. The experimental body was placed in a constant temperature and humidity chamber No. 1 and heated at 37°C for 2 hours in an environment with a relative humidity of 75%. Then it was transferred to a constant temperature and humidity chamber No. 2, where the relative humidity was 75% and the air temperature was 5°C. The temperature of the experimental body was measured every 5 minutes until the temperature of the experimental body was lower than 20°C.

[0079] The experimental results are shown in Table 2.

[0080] Table 2 Record of Thermal Storage and Constant Temperature Experiment

[0081]

[0082] As shown in Table 2, the fabric obtained by this invention can maintain a constant temperature and keep warm for a longer period of time in cold environments, indicating that the fabric structure and fiber composition play a role in heat storage. Among them, the heat storage effect of Example 4 is the most outstanding. The principle is that by further refining the far-infrared ceramic powder and volcanic rock powder, the embedding rate of these two powders in the cotton fibers is increased, ultimately improving the constant temperature and warmth retention effect.

[0083] The embodiments and descriptions above are merely illustrative of the principles and preferred embodiments of the present invention. Various changes and modifications may be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A fabric comprising a surface layer and an inner layer, characterized in that, The outer and inner layers are joined together by a joint connection method; The surface layer is woven with hydrophobic yarn; The inner layer is made of double-twisted yarn; The double-twisted yarn is composed of constant temperature polyester and modified yarn; The modified yarn includes heat-retaining yarn and sericin coated on the outer periphery of the heat-retaining yarn; the heat-retaining yarn is made by spinning and twisting heat-retaining fibers; the heat-retaining fibers include cotton fibers, far-infrared ceramic powder, volcanic rock powder and silk fibroin peptides; The cotton fiber is an etched fiber, with far-infrared ceramic powder and volcanic rock powder fixed in the pores of the etched fiber, and the silk fibroin peptide attached to the surface of the etched fiber. The weight parts of the cotton fiber, far-infrared ceramic powder, volcanic rock powder, silk fibroin peptide and sericin are as follows: 50-70 parts cotton fiber, 0.5-2 parts far-infrared ceramic powder, 0.5-2 parts volcanic rock powder, 10-20 parts silk fibroin peptide and 5-15 parts sericin.

2. The fabric according to claim 1, characterized in that, The hydrophobic yarn is a man-made fiber with a "Z" shaped fiber and an "X" shaped fiber cross-section.

3. The fabric according to claim 1, characterized in that, The surface of the constant temperature polyester is coated with a moisture-absorbing finishing agent.

4. The fabric according to claim 1, characterized in that, The hydrophobic yarn has a fineness of 90-110D, the constant temperature polyester has a fineness of 45-55D, and the modified yarn has a fineness of 100S.

5. A method for preparing a fabric according to claim 1, characterized in that, Includes the following steps: S1 is made of cotton fiber, far-infrared ceramic powder, volcanic rock powder, silk fibroin polypeptide and sericin; S2. Soak cotton fibers in an aqueous solution of acetic acid with a concentration of 15-20wt% for 3-7 minutes to obtain etched fibers; S3 removes the etched fiber and washes it with clean water, then drains it. S4 dissolves silk fibroin peptides in water at three times their own weight to obtain a silk fibroin peptide solution. S5 adds the cleaned etched fiber, far-infrared ceramic powder, and volcanic rock powder to water at a ratio of 10 times their weight for the first stirring. The first stirring is performed at a speed of 500-1000 r / min for 30-50 min. The etched fiber is then removed, drained, and placed in a silk fibroin polypeptide solution for the second stirring. The second stirring is performed at a speed of 50-100 r / min for 5-15 min. The fiber is then removed and air-dried to obtain the heat-storing fiber. S6 spins and twists heat-retaining fibers to obtain heat-retaining yarn; S7 dissolves sericin in water at three times its own weight to obtain a sericin solution. The sericin solution is then evenly coated onto the outer periphery of the heat-storing yarn and air-dried at a temperature of 20-35℃ to obtain the modified yarn. S8 produces double-twisted yarn by twisting modified yarn and constant temperature polyester; S9 weaves double-twisted yarn and hydrophobic yarn into the inner and outer layers respectively. During the weaving process, the inner and outer layers are combined by a joint splicing method to obtain the fabric.

6. The method for preparing the fabric according to claim 5, characterized in that, The clean water used in step S3 is warm water with a temperature of 40-70℃.

7. The method for preparing the fabric according to claim 5, characterized in that, The first stirring in step S5 also includes ultrasonic dispersion.

8. The method for preparing the fabric according to claim 5, characterized in that, The air-drying temperature in step S5 is 50-70℃.

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