Alginate fiber and regenerated cellulose fiber blended plant dyed woven fabric and processing technology thereof

Abstract

The invention relates to the technical field of textile fabric processing, in particular to a plant-dyed woven fabric formed by blending alginate fibers and regenerated cellulose fibers and a processing technology of the plant-dyed woven fabric. The plant-dyed woven fabric is prepared from the following raw materials in percentage by mass: 10-40% of alginate fiber and the balance of regenerated cellulose fiber, and the plant-dyed woven fabric is prepared from the following raw materials in percentage by mass: 10-40% of alginate fiber and the balance of regenerated cellulose fiber; the yarn count range of the plant dyed woven fabric is 80-12 S; the processing technology adopts a weaving mode for production and processing, and sequentially comprises the procedures of warp sizing, weaving and dyeing and finishing. The advantages of the alginate fiber and the regenerated cellulose can be combined, and the prepared plant dyed woven fabric is excellent in performance; the dissolution loss risk of the alginate fibers in the sizing, weaving and dyeing and finishing procedures can be reduced, the loss of the alginate fibers caused by weaving is reduced, and the application of the alginate fibers in the field of weaving can be realized; dyeing can be realized in a salt-free and alkali-free environment, the coloring depth is ensured, and the practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of textile fabric processing, and in particular to a plant-dyed woven fabric blended with seaweed fiber and regenerated cellulose fiber and a processing technology thereof. Background Art

[0002] In the field of textiles, with the expansion of the application scope of fabrics and the refinement of application fields, the demand for highly functional and high-performance textile materials is also growing. Seaweed fiber is a kind of alginate fiber, which is made from natural algae in the ocean. It is refined to obtain seaweed polysaccharides, and then the fiber raw material is prepared by wet spinning. Because the raw materials come from natural algae, seaweed fiber has good biocompatibility, antibacterial, high hygroscopicity, absorbability, flame retardancy, natural degradability and other properties. It is a new type of excellent functional textile material. At the same time, the source of seaweed raw materials is rich, which provides a sustainable source of raw materials for the production of seaweed fiber. Therefore, seaweed fiber is a rapidly developing new type of green functional fiber material.

[0003] In the prior art, the application of seaweed fiber in the textile field is mainly to mix seaweed fiber with other fibers and then spin them (i.e., blending), and then process them into fabrics. The blended fabrics can improve the spinnability and strength of seaweed fiber, and can select appropriate raw materials and mixing ratios according to different product requirements, making them more flexible to use. At present, seaweed fiber is mainly blended with natural fibers such as cotton, linen, and wool.

[0004] However, since the molecular structure of seaweed fiber is alginate, encountering acids, alkalis, salts and strong oxidants during the processing will cause the seaweed fiber to swell and melt, resulting in the loss of seaweed fiber, and then leading to a decline in fabric performance and functional loss. However, conventional textile fabrics, especially woven fabrics, must be sized before weaving, and dyed after desizing. In addition, natural fibers such as cotton fibers also need to be boiled to remove impurities and bleached to increase whiteness to ensure the application performance of textiles. The above processing links will encounter a processing environment containing acid, alkali and salt additives. Therefore, there are great difficulties in the processing of seaweed fiber woven fabrics. It is difficult to avoid the dissolution of seaweed fibers using conventional weaving processing technology, which affects the decline in physical properties and functional loss of the product, and thus the current application of seaweed fibers in the field of prevention is mainly concentrated in knitting processing methods such as weft knitting and warp knitting, which is subject to greater restrictions. Summary of the invention

[0005] Aiming at the problem that the conventional weaving processing technology easily causes the loss of seaweed fibers, it is difficult to produce seaweed fiber-containing fabrics with good performance and strong functionality, and the textile processing methods of seaweed fibers are greatly limited, the present invention provides a plant-dyed woven fabric blended with seaweed fibers and regenerated cellulose fibers and a processing technology thereof, which can combine the advantages of seaweed fibers and regenerated cellulose to obtain a plant-dyed woven fabric with excellent performance; can reduce the risk of dissolution loss of seaweed fibers in sizing, weaving and dyeing and finishing processes, reduce the loss of seaweed fibers caused by weaving, and realize the application of seaweed fibers in the weaving field; can realize dyeing in a salt-free and alkali-free environment, ensure the color depth, and has strong practicality.

[0006] In a first aspect, the present invention provides a plant-dyed woven fabric blended with seaweed fiber and regenerated cellulose fiber. The raw materials of the plant-dyed woven fabric include seaweed fiber and regenerated cellulose fiber. In terms of mass percentage, the proportion of seaweed fiber in the plant-dyed woven fabric is 10%-40%, and the remainder is regenerated cellulose fiber; the yarn count range of the plant-dyed woven fabric is 80-12 English count.

[0007] Furthermore, the seaweed fiber is short seaweed fiber.

[0008] Furthermore, the regenerated cellulose fiber is selected from at least one of lyocell fiber, modal fiber, viscose fiber and bamboo pulp fiber.

[0009] In a second aspect, the present invention provides a processing technology for the above-mentioned plant-dyed woven fabric, which is produced and processed by weaving, and sequentially includes the steps of warp yarn sizing, weaving, and dyeing and finishing.

[0010] Furthermore, the warp yarn sizing process adopts a PVA-free sizing process, and uses starch sizing and / or polyacrylic acid sizing to sizing the warp yarn.

[0011] Among them, starch slurry includes natural starch slurry and modified starch slurry. Modified starch slurry is starch slurry obtained by physical, chemical or enzymatic treatment of natural starch.

[0012] Further, the steps of dyeing and finishing process include: (1) Desizing: using a neutral enzyme to treat the woven fabric to remove the size attached to the warp yarn in the fabric to achieve desizing; (2) Light bleaching: singeing the desized fabric, then light bleaching and drying; (3) Dyeing: the fabric after light bleaching is modified and then dyed with plant dyes. The specific operation of the modification is to add gelatin modifier to the fabric to modify the regenerated cellulose fiber in the fabric. No salt or alkali is added during the dyeing process to promote dyeing and treatment; (4) Post-dyeing treatment: color matching of the dyed fabrics. After the color matching is qualified, the fabrics are soaped, washed and dried; (5) Finishing: After the dried fabric is softened, it is stretched and shaped to complete the processing of plant-dyed woven fabrics.

[0013] Furthermore, the neutral enzyme used in step (1) is a salt-free neutral enzyme or a low-salt neutral enzyme.

[0014] Furthermore, in step (2), the desized fabric is lightly bleached using low-concentration hydrogen peroxide, wherein the concentration of H2O2 in the low-concentration hydrogen peroxide is 1-3 g / L.

[0015] Furthermore, the specific operation of the dyeing process in step (3) is: firstly, water is added to the dyeing vat and the pH value is adjusted to 7-8, then the plant dye and the auxiliary liquefied material are fully mixed and filtered and then added to the dyeing vat for cyclic dyeing.

[0016] Furthermore, after adding water to the dye vat and adjusting the pH value, a fixing agent is added to the dye vat.

[0017] The beneficial effects of the present invention are: 1. The raw materials of the plant-dyed woven fabric of the present invention include seaweed fiber and regenerated cellulose fiber, which can combine the advantages of seaweed fiber and regenerated cellulose. On the one hand, it has high hygroscopicity, antibacterial properties and good biocompatibility, and on the other hand, it has good spinnability. The prepared plant-dyed woven fabric has certain softness and comfort, and is suitable for use in the production of various types of clothing.

[0018] 2. The present invention blends seaweed fiber with regenerated cellulose and then processes the blended fiber by weaving. The sizing process adopts a PVA-free sizing process, and the sizing material does not contain synthetic materials such as PVA. Neutral enzyme desizing is used in the dyeing and finishing process, and there is no need to scour in a strong alkaline environment after desizing, thereby reducing the risk of dissolution loss of seaweed fiber in the sizing, weaving and dyeing and finishing processes, reducing the loss of seaweed fiber caused by weaving, and realizing the application of seaweed fiber in the weaving field.

[0019] 3. The present invention uses plant dyes for dyeing in a salt-free and alkali-free environment, thereby avoiding the loss of seaweed fibers caused by strong acid and alkaline dyes. At the same time, the present invention uses a reasonable proportion of blended seaweed fibers and regenerated cellulose fibers, with regenerated cellulose as the main body. The blending ratio of the seaweed fibers is controlled on the basis of achieving their own functionality, ensuring the depth of coloring, meeting the conditions required for industrial production and processing, and being practical for actual application as textiles. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] Example 1 A processing technology for a plant-dyed woven fabric blended with seaweed fiber and regenerated cellulose fiber, wherein the raw materials of the plant-dyed woven fabric include seaweed fiber staple fibers and regenerated cellulose fibers, wherein the regenerated cellulose fibers are modal fibers; in terms of mass percentage, the proportion of seaweed fibers in the plant-dyed woven fabric is 30%, and the proportion of regenerated cellulose fibers is 70%; the production and processing is carried out by weaving, and the steps of warp sizing, weaving, and dyeing and finishing are sequentially included, and the yarn count range of the plant-dyed woven fabric is 80-12 English count; Among them, the warp yarn sizing process adopts a PVA-free sizing process, using potato modified starch sizing and acrylic acid sizing in a mass ratio of 6:4 to evenly mix for warp yarn sizing; The steps of dyeing and finishing process include: (1) Desizing: Use universal enzyme 11L salt-free neutral enzyme to treat the woven fabric, immerse the fabric in a bath ratio of 20:1 and a temperature of 60°C for 40 minutes, and then wash with water until the sizing is completely removed to achieve desizing; (2) Light bleaching: singeing the desized fabric, then light bleaching the desized fabric with low-concentration hydrogen peroxide with a H2O2 concentration of 1g / L, and drying the fabric after light bleaching; (3) Dyeing: modify the fabric after light bleaching, and then dye the fabric with plant dyes. No salt or alkali is added to promote dyeing and treatment during the dyeing process; The specific operation of the modification treatment is as follows: add water to the dye vat at room temperature and adjust the pH value to 8, then add 2% by mass of gelatin modifier to the water in the dye vat, immerse the fabric in the dye vat, then heat the liquid in the dye vat to 80°C and keep it warm for 30 minutes, and then add water; The specific operation of the dyeing process is as follows: add water to the dye vat and adjust the pH value to 8, then add a fixing agent to the water in the dye vat at a ratio of 4g / L, then adjust the water temperature to 30°C, then fully mix the plant dye and the auxiliary liquefied material, filter and add them to the dye vat, the volume of the plant dye added is 10% of the volume of the water in the dye vat, keep the water temperature at 30°C for cyclic dyeing, heat it to 60°C after circulating for 25 minutes, and circulate for another 40 minutes; (4) Post-dyeing treatment: color matching of the dyed fabrics. After the color matching is qualified, the fabrics are soaped, washed and dried; (5) Finishing: After the dried fabric is softened, it is stretched and shaped to complete the processing of plant-dyed woven fabrics.

[0022] The color fastness of the plant-dyed woven fabric prepared in Example 1 reaches level 4, and the seaweed fiber loss rate is less than 5%.

[0023] Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily conceive of changes or substitutions within the technical scope disclosed by the present invention, and such changes or substitutions shall be within the scope of protection of the present invention.

Claims

1. A plant-dyed woven fabric blended with seaweed fiber and regenerated cellulose fiber, characterized in that: The raw materials of plant-dyed woven fabrics include seaweed fiber and regenerated cellulose fiber. In terms of mass percentage, the proportion of seaweed fiber in plant-dyed woven fabrics is 10%-40%, and the rest is regenerated cellulose fiber; the yarn count range of plant-dyed woven fabrics is 80-12 English count.

2. The plant-dyed woven fabric according to claim 1, characterized in that: Seaweed fiber is short seaweed fiber.

3. The plant-dyed woven fabric according to claim 1, characterized in that: The regenerated cellulose fiber is selected from at least one of lyocell fiber, modal fiber, viscose fiber and bamboo pulp fiber.

4. A process for processing plant-dyed woven fabrics as claimed in claim 1, characterized in that: The production and processing adopts the weaving method, which includes warp yarn sizing, weaving, dyeing and finishing steps in sequence.

5. The processing technology according to claim 4, characterized in that: The warp yarn sizing process adopts a PVA-free sizing process, and uses starch sizing and / or polyacrylic acid sizing to sizing the warp yarn.

6. The processing technology according to claim 4, characterized in that: The steps of dyeing and finishing process include: (1) Treating the woven fabric with a neutral enzyme to remove the size attached to the warp yarn in the fabric and achieve desizing; (2) Singeing the desized fabric, then bleaching it lightly and drying it; (3) Modifying the fabric after light bleaching, and then dyeing the fabric with plant dyes. The specific operation of the modification treatment is to add gelatin modifier to the fabric to modify the regenerated cellulose fiber in the fabric; no salt or alkali is added during the dyeing process to promote dyeing and treatment; (4) Check the color of the dyed fabrics, and then soap, wash and dry the fabrics after the color matching is qualified; (5) After the dried fabric is softened, it is stretched and shaped to complete the processing of the plant-dyed woven fabric.

7. The processing technology according to claim 6, characterized in that: The neutral enzyme used in step (1) is a salt-free neutral enzyme or a low-salt neutral enzyme.

8. The processing technology according to claim 6, characterized in that: In step (2), the desized fabric is lightly bleached using low-concentration hydrogen peroxide, wherein the concentration of H2O2 in the low-concentration hydrogen peroxide is 1-3 g / L.

9. The processing technology according to claim 6, characterized in that: The specific operation of the dyeing process in step (3) is: first add water to the dyeing vat and adjust the pH value to 7-8, then fully mix the plant dye and the auxiliary liquefied material, filter them, and add them to the dyeing vat for cyclic dyeing.

10. The processing technology according to claim 6, characterized in that: Add the fixing agent to the dye vat after adding water to the dye vat and adjusting the pH value.