Preparation method of environment-friendly functional fabric

Abstract

The invention provides a preparation method of an environment-friendly functional fabric, and belongs to the technical field of application of new textile materials. The green and environment-friendly functional fabric prepared by the invention comprises 60-70% of regenerated polyester modified fibers and 30-40% of polylactic acid spinning fibers; the regenerated polyester modified fiber is used as an outer surface, and the polylactic acid spinning fiber is used as an inner surface. According to the tissue design, the regenerated polyester modified fibers on the outer surface can quickly adsorb sweat conducted by the polylactic acid fixed spinning filaments inside to the outer surface, the sweat is quickly volatilized and air-dried in the air, and the fabric is firm and wear-resistant; the two raw materials are green and environment-friendly new materials, and are more in line with the general directions of low carbon, energy conservation, emission reduction and sustainable development.

Description

[0001] The present application is a divisional application of the invention patent application with application number CN202311078736.6 and invention name "Preparation method of green and environmentally friendly functional fabric", and the parent application has an application date of August 25, 2023. TECHNICAL FIELD

[0002] The present application belongs to the technical field of new textile materials, and specifically relates to a preparation method of a green and environmentally friendly functional fabric. BACKGROUND

[0003] Polylactic acid fiber is a green plant rich in lactic acid such as corn grain, cassava, and straw, which is used as raw material, fermented by probiotics to generate lactic acid, then extracted, polymerized into polylactic acid, and finally spun into a filament. It can be decomposed into carbon dioxide and water in the soil or seawater through microbial action, has little smoke and no toxic gas when burning, and can be extinguished immediately when away from the fire, thus causing no pollution. It is an ecological fiber with green and sustainable development. Polylactic acid fiber has the basic properties of chemical synthetic fiber and the biocompatibility and degradability of natural fiber. It is a bio-based chemical synthetic fiber that can be planted, recycled, and reused, and can be naturally degraded in nature.

[0004] Regenerated polyester is an environmentally friendly fiber that recycles and reuses waste plastic bottle pieces. In recent years, the use of regenerated polyester has been vigorously promoted by the country and even the whole world. Cool silk is a kind of cotton-like fiber generated by differentiating and innovating regenerated polyester in the spinning process, and has been applied in batches in the market. The close-fitting fabric woven by the filament spun by polylactic acid fiber and regenerated polyester has the advantages of pure green environmental protection and natural functionality of polylactic acid fiber.

[0005] Chinese patent CN108552650A, entitled "Preparation method of moisture-absorbing and sweat-releasing polylactic acid fiber / polyester blended fabric", modifies polylactic acid fiber and blends it with polyester to form a yarn, and then weaves the fabric. The inner and outer layer interweaving structure described in the present application does not belong to the same category. Moreover, polylactic acid fiber is a new biomass material, and its stability is extremely difficult to grasp. The blending of regenerated polyester and polylactic acid fiber has great differences in dyeing, finishing, and other process links, and does not have the same points and comparability as the purpose and method of the present application. SUMMARY

[0006] Therefore, the present application aims to provide a preparation method of a green and environmentally friendly functional fabric, which has good wear resistance, skin-friendly antibacterial, moisture-conducting and sweat-releasing effects, and no sweat smell.

[0007] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: The present application provides a preparation method of a green and environmentally friendly functional fabric, comprising the following steps: S1. Fiber selection: Recycled polyester modified fiber and polylactic acid fiber fixed spinning filament are selected; S2. Weaving: The fabric is woven by using recycled polyester modified fiber as the outer surface and polylactic acid fiber fixed filament as the inner surface. S3. Dyeing: Place the fabric in the dyeing vat, add water, heat to 50-55℃, maintain for 30 minutes, then add disperse dye, then heat to 100℃ at 2℃ / minute, run for 2 hours, and finally heat to 110℃, run for 10 minutes to complete the color fixation. After that, quickly cool to 90℃, add clean water to wash, and add glacial acetic acid to adjust the pH value to 5 before removing from the vat.

[0008] Preferably, in step S1, the recycled polyester modified fiber is any one of cool cotton fiber, iterative fiber, or cross fiber.

[0009] Preferably, in step S1, the polylactic acid fiber filament is any one of DTY, FDY, or cross-fiber.

[0010] Preferably, in step S2, the fabric comprises 60-70% recycled polyester modified fiber and 30-40% polylactic acid fiber filament.

[0011] Preferably, in step S2, the count of the recycled polyester modified fiber in the fabric is 28-50S, and the count of the polylactic acid fiber filament is 30-150D.

[0012] Preferably, in step S2, the weaving method is to weave in a twill weave using an air-jet loom or to interweave using a double-sided circular knitting machine.

[0013] Preferably, step S3 further includes shaping after exiting the cylinder, setting the shaping machine temperature to 110-120℃ and the machine speed to 25 meters / minute, and adding 5g / L of moisture-wicking agent and 3g / L of antistatic agent for modification during shaping.

[0014] Significant Technical Benefits: This invention utilizes specially spun polylactic acid (PLA) fiber filaments for the inner lining and purchased recycled polyester fibers for the outer surface. This structural design maximizes the advantages of the PLA fiber filaments, making them soft, skin-friendly, silky, breathable, odor-free, moisture-wicking, easy to wash, and quick-drying, ideal for the inner lining of clothing. The outer recycled polyester modified fiber quickly absorbs sweat from the inner filaments, allowing it to evaporate and dry rapidly in the air. It is also durable and abrasion-resistant, meeting the professional requirements for workwear, professional attire, training uniforms, and school uniforms. Both raw materials are environmentally friendly, further aligning with current trends of low-carbon energy conservation, emission reduction, and sustainable development. Detailed Implementation

[0015] To better understand the present invention, the following embodiments further illustrate the content of the present invention, but the content of the present invention is not limited to the following embodiments.

[0016] This invention provides a method for preparing a green, environmentally friendly, and functional fabric, wherein the fabric comprises 60-70% recycled polyester modified fiber and 30-40% polylactic acid fiber filament; the fabric has recycled polyester modified fiber as the outer surface and polylactic acid fiber filament as the inner surface.

[0017] In this invention, the recycled polyester modified fiber includes, but is not limited to, any one of cool cotton fiber, iterative fiber or cross fiber.

[0018] In this invention, the polylactic acid fiber filament includes, but is not limited to, any one of DTY, FDY, or cross-fiber.

[0019] In this invention, the count of the recycled polyester modified fiber is 28-50S, and the polylactic acid fiber filament is 30-150D.

[0020] Example 1 1) Fiber selection: 150D polylactic acid filament as weft yarn, 40S recycled polyester filament as warp yarn.

[0021] 2) Weaving process: 40S recycled polyester filament is double-twisted, warped, and mounted on a beam. It is then passed through an air-jet loom in a twill weave pattern, with the warp and weft density adjusted to 133 / 72. Polylactic acid filament is used as the weft to weave the inner surface, and recycled polyester filament is used as the warp to weave the outer surface, thus obtaining the fabric.

[0022] 3) Dyeing Process: Place the woven fabric in a dyeing vat, add water, and heat to 50-55℃. Maintain this temperature for 30 minutes, then add disperse dye. Increase the temperature by 2℃ / minute to 100℃ and run for 2 hours. Finally, increase the temperature to 110℃ and run for 10 minutes to fix the color. Then, rapidly cool to 90℃, add clean water for washing, and adjust the pH to 5 with glacial acetic acid before removing from the vat. For setting after removing from the vat, set the setting machine temperature to 110-120℃ and the speed to 25 meters / minute. During setting, add 5g / L of moisture-wicking agent and 3g / L of antistatic agent to modify the fabric, resulting in a green, environmentally friendly, and functional fabric. The calculated fabric contains 68% recycled polyester filament and 32% polylactic acid fiber, with a unit area weight of 150g / m². 2 .

[0023] Example 2 Product Name: Polylactic Acid Recycled Polyester Double-Sided Mesh Fabric 1) Fiber selection: 150D recycled polyester modified fiber + 75D polylactic acid filament 2) Weaving process: The machine is produced using a 28-needle 30-inch double-sided circular knitting machine. Two types of yarn are interwoven: the front side is 150D recycled polyester modified fiber, and the back side is 75D polylactic acid filament.

[0024] 3) Dyeing Process: After pre-forming the knitted pre-treated fabric into a rope shape, it is placed in the dyeing vat. Water is added at a liquor ratio of 1:6 (fabric-to-water ratio). The temperature is raised to 50-55℃ for sizing and refining. After maintaining this temperature for 30 minutes, disperse dye is added, and the temperature is increased to 100℃ at a rate of 2℃ / minute. The process is run for 2 hours, and finally, the temperature is raised to 110℃ and run for 10 minutes to complete the color fixation. The temperature is then rapidly reduced to 90℃, and the fabric is washed with clean water. Glacial acetic acid is added to adjust the pH to 5 before removing the fabric from the vat. During the setting process, the setting machine is set at a temperature of 110-120℃ and a speed of 25 meters / minute. 5g / L of moisture-wicking agent and 3g / L of antistatic agent are added during setting to modify the fabric, resulting in a green, environmentally friendly, and functional fabric. Calculations show that the fabric contains 68% recycled polyester filament and 32% polylactic acid fiber, with a unit area weight of 170g / m². 2 .

[0025] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for preparing a green, environmentally friendly, and functional fabric, characterized in that, Includes the following steps: S1. Fiber selection: Recycled polyester modified fiber and polylactic acid fiber fixed spinning filament are selected; S2. Weaving: The fabric is woven by using recycled polyester modified fiber as the outer surface and polylactic acid fiber fixed filament as the inner surface. S3. Dyeing: Place the fabric in the dyeing vat, add water, heat to 50-55℃, maintain for 30 minutes, then add disperse dye, then heat to 100℃ at 2℃ / minute, run for 2 hours, and finally heat to 110℃, run for 10 minutes to complete the color fixation. After that, quickly cool to 90℃, add clean water to wash, and add glacial acetic acid to adjust the pH value to 5 before removing from the vat.

2. The method for preparing a green, environmentally friendly, and functional fabric according to claim 1, characterized in that, In step S1, the recycled polyester modified fiber is any one of cool cotton fiber, iterated fiber or cross fiber.

3. The method for preparing a green, environmentally friendly, and functional fabric according to claim 1, characterized in that, In step S1, the polylactic acid fiber filament is any one of DTY, FDY or cross-fiber.

4. The method for preparing a green, environmentally friendly, and functional fabric according to claim 1, characterized in that, In step S2, the fabric comprises 60-70% recycled polyester modified fiber and 30-40% polylactic acid fiber filament.

5. The method for preparing a green, environmentally friendly, and functional fabric according to claim 1, characterized in that, In step S2, the recycled polyester modified fiber of the fabric has a count of 28-50S, and the polylactic acid fiber filament has a count of 30-150D.

6. The method for preparing a green, environmentally friendly, and functional fabric according to claim 1, characterized in that, In step S2, the weaving method is to weave in a twill weave using an air-jet loom or to interweave using a double-sided circular knitting machine.

7. The method for preparing a green, environmentally friendly, and functional fabric according to claim 1, characterized in that, Step S3 also includes shaping after exiting the cylinder. The shaping machine is set to a shaping temperature of 110-120℃ and a speed of 25 meters per minute. During shaping, 5g / L of moisture-wicking agent and 3g / L of antistatic agent are added for modification.