An antigen-modified Tencel fabric and its preparation process

Abstract

This invention belongs to the field of textile dyeing and finishing technology, and particularly relates to an antigen-fiberized Tencel fabric and its preparation process. The preparation process of the antigen-fiberized Tencel fabric includes the following steps: S1 drawing treatment, S2 polishing treatment, S3 air beating, S4 polishing and dyeing, S5 first and second sand washing treatments, S6 ring drying and cooling treatment, and S7 stretching. In this processing step, the uncrosslinked Tencel fabric undergoes three fibrillation treatments and corresponding three polishing treatments. Through multiple fibrillation and polishing treatments, the Tencel skin layer continuously opens and grows new fibers, which are then removed. This enhances the antigen-fiberization performance of the uncrosslinked Tencel fabric and reduces the uneven white bloom and decreased hand feel that are common problems with uncrosslinked Tencel fabrics.

Description

Technical Field

[0001] This invention belongs to the field of dyeing and finishing textile technology, and particularly relates to an antigen-modified Tencel fabric and its preparation process. Background Technology

[0002] With increasing awareness of environmental protection and health, green and eco-friendly textiles are gaining popularity. Tencel is a new type of man-made cellulose fiber, known as a green fiber because its production and final product disposal do not pollute the environment. Tencel fabrics offer excellent performance, being soft, comfortable, breathable, smooth, cool, and with good drape.

[0003] Based on whether it is cross-linked, Tencel fibers can be divided into uncross-linked Tencel and cross-linked Tencel. Among them, uncross-linked Tencel has unique fibrillation characteristics. When the fiber is wet, it will split into fibrils along the fiber axis through mechanical friction. Through dyeing and finishing, it can obtain a unique peach skin feel and an antique visual three-dimensional effect. It is mainly used in various woven fabrics and is suitable for high-end women's casual wear fabrics.

[0004] Uncrosslinked Tencel fabric is favored by consumers for its unique style. However, during the use of the fabric, repeated washing in a household washing machine gradually increases the fibrillation of the uncrosslinked Tencel fibers, resulting in severe white frost on the surface of the uncrosslinked Tencel fabric.

[0005] The hazy, distressed effect of uncrosslinked Tencel fabric exceeds actual needs. The fabric loses its luster, pilling worsens, and uneven white bloom appears where it has been touched, severely impacting its aesthetic appeal. Furthermore, the insufficient anti-fibrous properties of uncrosslinked Tencel garments mean that home washing gradually diminishes its hand feel, making it prone to wrinkling and further affecting the garment's appearance. This restricts the high-end and elegant positioning of uncrosslinked Tencel fabric, hindering its promotion and use. Summary of the Invention

[0006] In order to overcome the problem that the uncrosslinked Tencel fabric will suffer from severe white bloom, decreased appearance and hand feel due to the increased fibrillation caused by the mechanical force of washing, this application provides an antifibrillated Tencel fabric and its preparation process.

[0007] In a first aspect, this application provides a preparation process for antigen-modified Tencel fabric, employing the following technical solution:

[0008] A process for preparing an antigen-modified Tencel fabric includes the following steps:

[0009] S1 drawing process: The first pre-product is prepared by washing the Tencel blank in nine stages at a temperature of 65-95℃. In the second and third stages of washing, 2-5g / L of expansion agent is added and the speed is controlled at 30-50m / min.

[0010] S2 Polishing treatment: The first pre-product is polished with polishing liquid for 30 minutes. The vibration frequency of the polishing treatment is 110-130HZ and the temperature is 50-70℃. Then, it is dehydrated to obtain the second pre-product.

[0011] The polishing solution comprises a first polishing enzyme with a mass concentration of 0.5-2 g / L and water;

[0012] S3 Air Beating: The second pre-product is placed in 3-7 g / L of the first fabric softener and continuously wet beaten at a temperature of 120-140℃ and an air volume of 50-70%, with the machine speed controlled at 15-30 m / min, to prepare the third pre-product.

[0013] S4 Polishing and Staining: Place the third pre-product in water containing 2-3 g / L of anti-abrasion agent, then add a pH adjuster to adjust the pH to 5-6; then add 0.3%-1% (omf) of the second polishing enzyme, heat to 45-65℃, and polish for 12-17 min; then stain the polished third pre-product; then add soda ash to fix the color, keep warm for 20-50 min; then soap and dry to prepare the fourth pre-product.

[0014] S5 First and Second Sand Washing Treatment: The fourth pre-product is placed in water, and after adding 0.5-1 g / L of the second softener at a speed of 30-50 rpm and a temperature of 40-60℃, it undergoes a first sand wash for 3-8 minutes; then, 0.5-2 g / L of the third polishing enzyme is added, and a second sand wash is performed for 10-30 minutes; then, it is cooled, drained, and dehydrated to obtain the fifth pre-product; S6 Ring Drying and Cooling Treatment: The fifth pre-product is ring dried at a temperature of 70-90℃ for 20-40 minutes, and after cooling, the sixth pre-product is obtained;

[0015] S7 Tensioning: The sixth pre-processed product is tensioned to prepare antigen-fiberized Tencel fabric.

[0016] To improve the fibrillation properties of uncrosslinked Tencel fabric through the above technical solution, three fibrillation treatments and three polishing treatments were carried out in the preparation process of the fibrillated Tencel fabric, as follows:

[0017] The first S1 wire drawing process results in primary fibrillation, followed by the S2 polishing process.

[0018] In the S1 drawing process, a drawing swelling agent is added to make Tencel swell and expand, destroying the Tencel skin layer and pulling out long hairs to complete the primary fibrillation. At the same time, the S1 drawing process completes the smoothing and width shrinkage of the uncrosslinked Tencel fabric.

[0019] In the S2 polishing process, polishing enzymes are added, and under the mechanical force of vibrating water washing, the long hairs after primary fibrillation are removed.

[0020] The second air tapping (S3) induces secondary fibrillation, followed by polishing in the S4 polishing and dyeing step.

[0021] Through the S3 air-beating process, the uncrosslinked Tencel fabric is repeatedly impacted on the steel pipe, causing some of the Tencel fibers that are prone to fibrillation to fibrillate again and grow new long hairs.

[0022] The addition of a first softener in the S3 air-beating process enhances the softness of the uncrosslinked Tencel fabric through the combined effects of mechanical softening and the softener, which helps to improve the abrasion problem of the uncrosslinked Tencel fabric during the dyeing process.

[0023] In S4 polishing staining, the second polishing enzyme removes the long hairs after fibrillation, thus avoiding increased polishing difficulty after staining.

[0024] Tencel becomes more rigid when it comes into contact with water, which may cause scratches during dyeing in the dyeing cylinder, thus affecting the quality of uncrosslinked Tencel fabrics. Therefore, an anti-scratch agent is added to the polishing bath.

[0025] In the third S4 polishing and dyeing process, after dyeing, soda ash is added for color fixing. Under the swelling effect of soda ash, fibrillation occurs again, and new long hairs grow. Under the ironing effect of the drying drum, the fabric surface becomes smoother, but the hairs are pressed onto the fiber surface. Through the mechanical force of sand washing, all the long hairs are fluffed up and stand on the fiber surface to fully contact the polishing enzyme, thus improving the polishing effect.

[0026] During the sand washing process, a second softener is added for the first sand washing. This improves the softness of Tencel in a wet state and specifically prevents sand marks and abrasions from appearing on the Tencel fabric.

[0027] Through multiple fibrillation and polishing processes, the outer layer of Tencel is continuously opened and the fuzz is removed for pre-fibrillation. This pre-fibrillation process helps to enhance the anti-fibrillation performance of the fiber, improve the anti-fibrillation performance of the uncrosslinked Tencel fabric, enhance the household washing resistance of the uncrosslinked Tencel fabric, and prevent excessive white bloom and uneven white marks caused by rapid fibrillation. This, in turn, increases the number of household washes and the hand feel of the uncrosslinked Tencel fabric.

[0028] Preferably, 2. The water washing temperatures of the nine-segment water washing process in the S1 wire drawing process are set sequentially to 65℃, 75℃, 85℃, 85℃, 95℃, 95℃, 80℃, 70℃, and 60℃;

[0029] In the S2 polishing process, the polishing solution also includes a desizing enzyme with a mass concentration of 0.2-1 g / L.

[0030] Through the above technical solution, in the S1 drawing process, under the condition of 75-85℃, the swelling agent can be better immersed in the Tencel fabric. Combined with the nine-stage water washing process, the temperature is first increased and then decreased to improve the swelling effect and the subsequent polishing effect.

[0031] In the S2 polishing process, the desizing enzyme and polishing enzyme are bathed together, and desizing and polishing are carried out simultaneously, saving a step, improving production efficiency, and enhancing the polishing effect.

[0032] Preferably, the desizing enzyme is a wide-temperature desizing enzyme EAconc, and the first polishing enzyme is a neutral polishing enzyme ESconc.

[0033] The second polishing enzyme is neutral polishing enzyme 1111, and the third polishing enzyme is neutral polishing enzyme EZconc.

[0034] Through the above technical solutions, the desizing enzyme EAconc is a wide-temperature desizing enzyme EAconc, and the polishing enzyme ESconc is a neutral polishing enzyme ESconc;

[0035] Because uncrosslinked Tencel fabrics have a very high starch slurry content, a wide-temperature desizing enzyme, EAconc, which is compatible with the polishing enzyme ESconc, is used in combination with ESconc. EAconc and ESconc have excellent compatibility. Under mechanical vibration, the starch slurry is thoroughly removed during polishing, improving the efficiency of the desizing enzyme. The desizing effect can reach level 7, while conventional cold-batch desizing only achieves level 5. Furthermore, desizing of uncrosslinked Tencel fabrics promotes full contact between the polishing enzyme and the fibers, thereby improving the polishing effect and the anti-fibrillation effect of the Tencel fabric.

[0036] Preferably, in the S3 air tapping process, the first fabric softener is a silicone oil fabric softener.

[0037] Through the above technical solutions, silicone oil softener gives Tencel fabric excellent softness, effectively overcoming the natural defect that Tencel fabric is easily scratched when wet due to its strong rigidity during dyeing.

[0038] Preferably, in the S4 polishing and dyeing process, after adding the anti-abrasion agent to water, the third pre-product is placed in an aqueous solution containing the anti-abrasion agent, the aqueous solution containing the anti-abrasion agent is heated to 50°C, and then a pH adjuster is added.

[0039] During the dyeing process, reactive dye and sodium sulfate are added sequentially, the temperature is raised to 60°C, and the temperature is maintained for 20 minutes.

[0040] The above technical solution involves heating an aqueous solution containing the anti-scratch agent HC-2016T to 50°C, and then adding neutral polishing enzyme 1111 to provide a suitable temperature for the neutral polishing enzyme 1111, thereby improving the polishing efficiency of the neutral polishing enzyme 1111.

[0041] Preferably, in the first and second sand washing processes of S5, the second sand washing includes a first sand washing and a second sand washing of equal duration. After the first sand washing, the fourth pre-product treated by the first sand washing is pulled out, re-organized, and then put back into the fabric, followed by the second sand washing.

[0042] Preferably, before sand washing, the Tencel fabric is cut into strips, each strip being no more than 40 meters long, with two strips used. The strips are folded in half with the right sides facing inwards and then sewn along the warp edge.

[0043] Through the above technical solution, on the one hand, the re-processing and re-feeding of the fabric makes the sand washing more uniform in the fourth pre-processed product, which fully opens up the hairs of the Tencel skin layer, allowing the hairs of the skin layer to fully contact the polishing enzyme, thereby improving the polishing effect and the anti-fiberization effect of the Tencel fabric.

[0044] On the other hand, the Tencel fabric is cut into strips, each strip is no more than 40 meters long, and two strips are used. The fabric is folded in half with the right sides facing inwards, sewn along the warp edge, and pulled out, re-sorted, and then fed in the fabric. These measures are taken to prevent the Tencel from being scratched and to improve the yield of the finished product.

[0045] Preferably, in the first and second sand washing processes of S5, after the second sand washing process, 0.5 g / L acetic acid and 0.5-1 g / L cationic durable softener TX are added, and the mixture is sand washed for 5 minutes for softening treatment, followed by cooling, draining and dehydration; the second softener is cationic durable softener TX.

[0046] The above technical solution, through softening treatment, prevents Tencel from being scratched and improves the yield of finished products.

[0047] Cationic durable fabric softener TX is a cationic macromolecular softener with strong affinity and directness to fibers, resulting in a tight bond. It can improve the wash resistance of uncrosslinked Tencel fabrics and reduce changes in the feel and style of uncrosslinked Tencel fabrics and wrinkling caused by the removal of the softener during washing.

[0048] Preferably, after the softening treatment, 5-20 g / L of antigen fibrillating crosslinking agent is added, the temperature is raised to 50-65°C, kept at that temperature for 2-15 minutes, and then the temperature is lowered, the liquid is drained and dehydrated.

[0049] Through the above technical solution, on the one hand, the antigen fiber crosslinking agent TM is fully crosslinked with the active groups on the Tencel fiber, reducing the number of active groups on the Tencel fiber; on the other hand, the antigen fiber crosslinking agent TM forms a network structure on the fiber, making the fiber more tightly bound, enhancing and stabilizing the antigen fiberization performance of the fiber, thereby improving the antigen fiberization performance and breaking strength of the Tencel fabric.

[0050] Preferably, the first and second sand washing processes in S5 further include a finishing process, wherein after the softening treatment, 5-20 g / L of antigen fibrillating crosslinking agent is added to the third softening agent washing solution, and the temperature is raised to 50-65°C and kept at that temperature for 2-15 minutes.

[0051] Through the above technical solution, the fabric is given a draping and flowing style by sand washing followed by ring drying. At the same time, the antigen fiber crosslinking agent TM is fully crosslinked with the active groups on the Tencel fibers to form a network structure, thereby improving the antigen fiberization performance of the Tencel fabric.

[0052] Preferably, in the S6 ring drying and cooling process, the cooling process involves 10 minutes of cold air treatment.

[0053] Through the above technical solutions, the cooling process enhances the velvet and delicacy of the fibers, giving the fabric a smooth and skin-friendly feel.

[0054] Secondly, this application provides an antigen-reinforced Tencel fabric.

[0055] An antigen-modified Tencel fabric is prepared using any of the antigen-modified Tencel fabric preparation processes described in this application.

[0056] By adopting the above technical solution, employing the following process steps—S1 drawing treatment, S2 polishing treatment, S3 air beating, S4 polishing and dyeing, S5 first and second sand washing treatment, S6 post-treatment, and S7 stretching—the antifibrillation properties of uncrosslinked Tencel fabric are enhanced, significantly improving the number of household washes and reducing problems such as excessively rapid fibrillation, uneven white blooming, white marks, and decreased hand feel. Furthermore, the Tencel fabric prepared using this application exhibits fewer defects and a high yield of acceptable products, meeting the practical needs of both production and consumers.

[0057] In summary, this application has the following beneficial effects:

[0058] 1. The preparation process of anti-fibrillated Tencel fabric includes the following steps: S1 drawing treatment, S2 polishing treatment, S3 air beating, S4 polishing and dyeing, S5 first and second sand washing treatment, S6 ring drying and cooling treatment, and S7 stretching. In this process, the uncrosslinked Tencel fabric undergoes three fibrillation treatments and three corresponding polishing treatments. Through multiple fibrillation and polishing treatments, the Tencel skin layer is continuously opened and new fibers grow. Then, the fibers are removed, thereby enhancing the anti-fibrillation performance of the uncrosslinked Tencel fabric and reducing the problems of uneven white bloom, white marks, and decreased hand feel in the uncrosslinked Tencel fabric.

[0059] 2. By using antigen-fibrillating crosslinking agent TM to finish Tencel fabric, on the one hand, the antigen-fibrillating crosslinking agent TM fully crosslinks with the active groups on Tencel fibers, reducing the number of active groups on Tencel fibers; on the other hand, the antigen-fibrillating crosslinking agent TM forms a network structure on the fibers, making the fibers more tightly bound, enhancing and stabilizing the antigen-fibrillating properties of the fibers, thereby improving the antigen-fibrillating properties and breaking strength of Tencel fabric.

[0060] 3. By using silicone oil HC-821 in the S3 air beating step to improve the softness of the fabric in advance, adding an anti-abrasion agent in the bath during the S4 polishing and dyeing process, and pre-softening the fabric by adding cationic durable softener TX during the sand washing process, the natural defect of Tencel fabric becoming stiff and easily abraded when exposed to water during processing is overcome, thereby improving the wash resistance, hand feel and tensile strength of Tencel fabric. Detailed Implementation

[0061] Example 1

[0062] A preparation process for an antigen-modified Tencel fabric, the raw material composition of which is shown in Table 1, and the preparation steps are as follows:

[0063] S1 wire drawing process: carried out in a continuous flat-width refining mill. The continuous flat-width refining mill has 6 water tanks and 9 vibrating water washing tanks. The temperature of the water washing tanks is set to 65℃, 75℃, 85℃, 85℃, 95℃, 95℃, 80℃, 70℃ and 60℃ respectively. 3g / L of expansive agent (expanding agent HC) is added to the second and third feeding tanks. The speed is 30m / min to prepare the first pre-product.

[0064] S2 Polishing Treatment: The first pre-product was placed in an Italian Penterk rope-type enzyme washing machine, and 0.2 g / L desizing enzyme and 0.5 g / L first polishing enzyme were added. The temperature was set to 60℃, the machine speed was set to 10 m / min, the vibration frequency was set to 120 Hz, and the polishing treatment was carried out for 30 min (30 min / batch of cloth). After dehydration, the second pre-product was obtained.

[0065] Among them, the desizing enzyme is the wide-temperature desizing enzyme EAconc, and the first polishing enzyme is the neutral polishing enzyme ESconc.

[0066] S3 Air Beating: The second pre-product is placed in a flat-width air beater for wet beating at a temperature of 130℃ and an air volume of 60%. 5g / L of the first softener (a high-stability silicone oil softener, model HC-821) is added to the rolling groove. The wet beating speed is controlled at 15m / min to prepare the third pre-product.

[0067] S4 Polishing and Staining:

[0068] Polishing process:

[0069] The third pre-processed product was placed in an airflow dyeing machine. 2 g / L of anti-abrasion agent (HC-2016T) was added to the working bath. The working bath was heated until the temperature reached 50°C. The third pre-processed product was then slowly added to the dyeing vat. Then, pH adjuster HC-2103 was added to control the pH value of the dyeing bath between 5.5 and 0.5. Finally, 0.3% (omf) of the second polishing enzyme (neutral polishing enzyme 1111) was added and the product was polished at 55°C for 15 min.

[0070] Dyeing, soda ash color fixing, soaping and drying:

[0071] After polishing, reactive dye and sodium sulfate are added to the polishing bath in sequence. The temperature is raised to 60℃ and kept at that temperature for 20 minutes. Then, soda ash is slowly added over 30 minutes for color fixation. The temperature is kept at that temperature for another 30 minutes. After the dyeing is completed, 2 g / L of neutralizing soaping agent HC-2033new is added for neutralization and soaping. The third pre-product after soaping is then dried in two sets of cylinder drying drums at a temperature of 130℃ to prepare the fourth pre-product.

[0072] S5 first and second sand washing treatments:

[0073] First, the Tencel fabric is cut into strips, each no longer than 40 meters. Two strips are used, folded in half with the right sides facing inwards, and sewn along the warp edge. The fourth pre-product is placed in a sand washing tank, and then 0.5 g / L of the second softener (cationic durable softener TX) is added at a speed of 40 rpm and a temperature of 48°C. The first sand washing is performed for 5 minutes, followed by the addition of 0.5 g / L of the third polishing enzyme (neutral polishing enzyme EZconc). The second sand washing is performed for 20 minutes, followed by cooling, draining, and dehydration to obtain the fifth pre-product.

[0074] The second sand washing process includes a first sand washing step and a second sand washing step, both with equal washing durations. After the first sand washing step, the fabric is pulled out, re-organized, and then reinserted for the second sand washing step. In this embodiment, the first sand washing step is 10 minutes, and the second sand washing step is 10 minutes.

[0075] Softening treatment: After the second sand washing treatment, add 0.5 g / L acetic acid and 0.5 g / L cationic durable softener TX, and sand wash for 5 minutes for softening treatment.

[0076] After cleaning and processing, add 5 g / L of antigen fibrillating crosslinking agent (antigen fibrillating crosslinking agent TM), heat to 55℃, and keep warm for 5 min.

[0077] Then, by cooling, draining and dehydrating, the fifth pre-product is obtained.

[0078] S6 ring drying and cooling process:

[0079] The fifth pre-product was dried in an air bath at 80°C for 30 minutes, followed by cold air treatment for 10 minutes to obtain the sixth pre-product; S7 Stretching: The sixth pre-product was placed in a hot air stretching dryer for stretching, and after stretching, the antigen-fiberized Tencel fabric was obtained. The width of the antigen-fiberized Tencel fabric was controlled at 148±5cm.

[0080] Examples 2-5

[0081] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that the types and amounts of raw materials for the first polishing enzyme, desizing enzyme, first softener, anti-abrasion agent, second polishing enzyme, second softener, third polishing enzyme, and antigen-fiberized crosslinking agent are different, and the preparation process parameters of the antigen-fiberized Tencel fabric are different, as shown in Tables 1-2.

[0082] Table 1 lists the raw material types and dosages of the first polishing enzyme, desizing enzyme, and first softener in Examples 1-5, as well as the process parameter settings for S1 wire drawing, S2 polishing, and S3 air tapping.

[0083]

[0084]

[0085] In the S1 wire drawing process of Examples 1-3, the wire drawing time ranges from approximately 125 to 145 seconds.

[0086] Table 2 lists the types and amounts of raw materials for the anti-abrasion agent, second polishing enzyme, second softener, third polishing enzyme, and antigen-fibrillating crosslinking agent in Examples 1-5, as well as the process parameter settings for S4 polishing and dyeing, S5 first and second sand washing treatments, softening treatment, finishing treatment, and S6 post-treatment.

[0087]

[0088]

[0089]

[0090] Examples 6-8

[0091] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that the types of the first polishing enzyme and the desizing enzyme are set differently in the S2 polishing process, as detailed in Table 3.

[0092] Table 3. List of types of polishing enzyme and desizing enzyme in Examples 6-8 and Example 1.

[0093]

[0094] Example 9

[0095] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that the wide-temperature desizing enzyme EAconc is not used in the S2 polishing process.

[0096] Example 10

[0097] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that the washing temperatures of the nine-stage washing process in the S1 drawing process are set sequentially to 65℃, 75℃, 85℃, 95℃, 95℃, 95℃, 70℃, and 60℃.

[0098] In the S2 polishing process, the wide-temperature desizing enzyme EAconc is not used.

[0099] Example 11

[0100] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that: in the S4 polishing and dyeing process, before adding the second polishing enzyme, the aqueous solution containing the anti-abrasion agent and pH adjuster is not heated, and the temperature of the aqueous solution containing the anti-abrasion agent and pH adjuster is 25°C; the dyeing and color-fixing temperature is set to 50°C.

[0101] Example 12

[0102] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that the first and second sand washing processes of S5 are not adopted.

[0103] Example 13

[0104] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that: no finishing treatment is performed after the first and second sand washing processes in S5.

[0105] Example 14

[0106] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that: in the finishing process after the first and second sand washing in S5, an equal amount of a mixture of aluminum sulfate, zinc nitrate, malondialdehyde, and glyoxal in a mass ratio of 2:1:1:5 is used to replace the antigen-fiberizing crosslinking agent.

[0107] Example 15

[0108] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that: in the finishing process after the first and second sand washing in S5, an equal amount of amino silicone oil finishing agent JINSOFT 1830 is used to replace the antigen-fiberized crosslinking agent.

[0109] Example 16

[0110] The preparation process of an antigen-modified Tencel fabric differs from that of Example 1 in that: in the S2 polishing treatment, the wide-temperature desizing enzyme EAconc is not used; in the S4 polishing and dyeing treatment, the aqueous solution containing the anti-abrasion agent and pH adjuster is not heated before adding the second polishing enzyme, and the temperature of the aqueous solution containing the anti-abrasion agent and pH adjuster is 25°C; in the S5 first and second sand washing treatments, the second sand washing is set as a continuous sand washing; after the S5 first and second sand washing treatments, no softening or finishing treatment is performed.

[0111] Examples 17-20

[0112] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 1 in that the type of the first softener is different in the air beating process (S3); and the type of the second softener is different in the softening process after the first and second sand washing treatments (S5), as detailed in Table 4.

[0113] Table 4. List of types of the first and second softeners in Examples 17-20 and Example 1.

[0114]

[0115] Comparative Example

[0116] Comparative Example 1

[0117] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 15 in that it does not employ the S1 drawing process or the S2 polishing process.

[0118] Comparative Example 2

[0119] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 15 in that it does not employ the S3 air-beating and S4 polishing and dyeing steps.

[0120] Comparative Example 3

[0121] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 15 in that it does not employ the first and second sand washing treatments, softening treatment, and finishing treatment described in S5.

[0122] Comparative Example 4

[0123] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 15 in that it does not employ S4 polishing and dyeing, S5 first and second sand washing treatments, softening treatment, and finishing treatment.

[0124] Comparative Example 5

[0125] The preparation process of an antigen-fiberized Tencel fabric differs from that of Example 15 in that it does not employ the S1 drawing process and the S3 air-beating step.

[0126] Comparative Example 6

[0127] A preparation process for an antigen-modified Tencel fabric includes the following steps:

[0128] Cold pile pretreatment → flat-width water washing → drum drying → mercerizing → singeing → pretreatment → dyeing → enzyme washing → sand washing → ring drying → stretching.

[0129] Pretreatment before cold piling: After immersing the uncrosslinked Tencel fabric in the cold piling solution, place it at 25°C for 18 hours. The cold piling solution includes 20% Cold Piling King DR-53F 20g / L, 100% hydrogen peroxide 18g / L, acid polishing enzyme HY-502 10g / L, 100% caustic soda 60g / L and water.

[0130] Flat-width water washing: Nine-stage water washing is adopted, with the temperatures of the nine stages from front to back being 95℃, 95℃, 90℃, 85℃, 80℃, 80℃, 75℃, and 65℃ respectively.

[0131] Singeing: Singeing is performed in two forward and two reverse directions, with a speed of 80m / min to 100m / min and a flame intensity of 12-13 for upper penetration and 11-12 for lower half penetration.

[0132] Enzyme washing: Polish for 30 minutes using a 2 g / L neutral polishing enzyme ESconc aqueous solution.

[0133] Sand washing: Add 0.5g / L silicone oil softener Goon1206 at a speed of 40rpm and a temperature of 48℃, and sand wash for 30min.

[0134] Performance testing

[0135] Experiment 1: Determination of Whiteness (L-value) Test Method: The lightness value (L-value) of the fabric was tested using a Datacolor colorimeter. The fabric was folded into 10 layers to completely cover the test holes and placed on them for measurement. The whiteness (L-value) was read. Each sample needed to be measured three times at different locations while maintaining consistency in the warp and weft directions. The average value was taken as the whiteness of the sample. A higher L-value indicates a whiter fabric and a poorer degree of fiber anti-fiberization.

[0136] A 1-meter width of Tencel fabric was measured. Each wash was performed using 2g / L of the experimental standard White Cat laundry detergent at 30℃ for 45 minutes in a washing machine. After dehydration and drying, the experimental sample was washed 50 times in the same way. Samples were taken for testing before washing, and after washing 20, 30, 40, and 50 times.

[0137] Test samples: The antigen-fiberized Tencel fabrics prepared in Examples 1-20 were used as test samples, and the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6 were used as control samples.

[0138] Test results: The white frosting L value of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6 is shown in Table 5.

[0139] Table 5. Results of L-value tests for whiteness of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6 after different washing cycles.

[0140]

[0141]

[0142] Combining Examples 1-20 and Comparative Examples 1-6 with Table 5, it can be seen that:

[0143] The antigen-fiberized Tencel fabrics prepared in Examples 1-20 had a whiteness L value of 48-58 after 20 washes, which was better than the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6, which had a whiteness L value of 60-65 after 20 washes.

[0144] The antigen-fiberized Tencel fabrics prepared in Examples 1-20 had a whiteness L value of 49-66 after 30 washes, which was better than the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6, which had a whiteness L value of 70-75 after 30 washes.

[0145] The antigen-fiberized Tencel fabrics prepared in Examples 1-20 had a whiteness L value of 53-70 after 40 washes, which was better than the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6, which had a whiteness L value of 80-85 after 40 washes.

[0146] The antigen-fiberized Tencel fabrics prepared in Examples 1-20 had a whiteness L value of 55-80 after 50 washes, which was better than the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6, which had a whiteness L value of 90-95 after 50 washes.

[0147] This indicates that through multiple fibrillation and polishing processes, the skin of Tencel is continuously opened and new hairs grow, which are then removed, thereby enhancing the antigen fibrillation properties of the uncrosslinked Tencel fabric. Furthermore, the Tencel fabric is finished with an antigen fibrillation crosslinking agent TM, resulting in a Tencel fabric with excellent antigen fibrillation properties.

[0148] The experimental results of Examples 6-8 and Example 1 show that in the S2 polishing treatment, desizing and polishing are carried out simultaneously, which can improve the antigen fibrillation performance of Tencel fabric. The combined use of neutral polishing enzyme ESconc and wide-temperature desizing enzyme EAconc further improves the antigen fibrillation performance of Tencel fabric. This may be because neutral polishing enzyme ESconc and wide-temperature desizing enzyme EAconc have good compatibility, so that the polishing and desizing effects are synergistic.

[0149] The experimental results of Examples 9-10 and Example 1 show that the desizing process, polishing process, and the nine-stage washing process in the S1 drawing process complement each other and synergistically improve the anti-fibrillation properties of Tencel fabric. The improved anti-fibrillation properties may be due to the higher temperature washing treatment of the Tencel fabric after the nine-stage washing process in the S1 drawing process, which enhances the stability of the Tencel fabric. However, if the temperature is too high during the S1 drawing process, the interaction between the swelling agent and the fabric is weakened, resulting in poor swelling effect. This hinders the entry of the first polishing enzyme and desizing enzyme in the S2 polishing process into the Tencel fabric, leading to unsatisfactory polishing and desizing effects.

[0150] The experimental results of Examples 13-15 and Example 1 show that finishing treatment after the first and second sand washing in S5 can improve the fibrillation of Tencel fabric. This may be because the fibrillating crosslinking agent can combine with the active groups on the Tencel fabric. Through the crosslinking of macromolecules, the fibers are more tightly bound together, which reduces the fibrillation of Tencel fabric and enhances the stability of Tencel fabric.

[0151] Among the antigen-fibrillating crosslinking agents, antigen-fibrillating crosslinking agent TM has a better effect on the antigen fibrillation of Tencel fabric, possibly because antigen-fibrillating crosslinking agent TM has a better bonding strength with Tencel fabric than other antigen-fibrillating crosslinking agents.

[0152] The experimental results of Examples 17-20 and Example 1 show that: in the S3 air beating process, the first softener is silicone oil HC-821, and the second softener in the S5 first and second sand washing processes is cationic durable softener TX. This improves the antifibrillation performance of Tencel fabric. It is possible that in the S3 air beating process, the use of silicone oil HC-821 makes the Tencel fabric more pliable. The mechanical action causes more fibrils to break down, thereby improving the effect of the S4 polishing process.

[0153] In the softening process, cationic durable softener TX is selected. Because cationic macromolecular softeners have a high affinity and directness with fibers and bind tightly, they have a certain protective effect on Tencel fabrics, thereby enhancing antifibrillation and improving the fabric's washability. This helps prevent changes in the fabric's feel and style and wrinkling caused by softener removal during washing.

[0154] Experiment 2: Test method for the number of household washes and the number of abrasion points: Measure a 1-meter width of Tencel fabric. Each wash is performed using 2g / L of the experimental standard White Cat laundry detergent in a washing machine at 30℃ for 45 minutes. After dehydration and drying, the same washing method is repeated.

[0155] Anti-fibrillation performance refers to the phenomenon that as the number of times a fabric is washed increases, Tencel fibers undergo fibrillation, resulting in the fabric becoming increasingly whitish in appearance. The number of washes and the number of abrasion points are determined by visual inspection. If the whitishness severely affects the appearance of the fabric, then the number of washes is considered the upper limit of the number of washes.

[0156] Experiment 3: Tensile strength test method: The test was conducted in accordance with GB / T3923.1-2013 "Textiles - Tensile properties of fabrics - Part 1: Determination of tensile strength and elongation at break - Strip method".

[0157] Test samples: The antigen-fiberized Tencel fabrics prepared in Examples 1-20 were used as test samples, and the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6 were used as control samples.

[0158] Test results: The number of household washes, abrasion points and breaking strength of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6 are shown in Table 6.

[0159] Table 6 lists the test results of the number of household washes, abrasion points, and tensile strength of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6.

[0160]

[0161] Combining Examples 1-20 and Comparative Examples 1-6 with Table 6, it can be seen that the antigen-fiberized Tencel fabric prepared in Examples 1-20 has a household washing resistance of 22-37 times / bottle, which is significantly better than the antigen-fiberized Tencel fabric prepared in Comparative Examples 1-6, which has a household washing resistance of 2-5 times / bottle.

[0162] The antigen-fiberized Tencel fabrics prepared in Examples 1-20 had 4-18 abrasion points per batch, which was significantly better than the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6, which had 30-35 abrasion points per batch.

[0163] The warp breaking strength of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 is 730-780 / N, which is better than the warp breaking strength of the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6, which is 650-670 / N.

[0164] The weft breaking strength of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 is 408-460 / N, which is better than the weft breaking strength of the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6, which is 362-395 / N.

[0165] In this application, through multiple fibrillation and polishing processes, the skin of Tencel is continuously opened and new hairs grow, and then the hairs are removed, thereby enhancing the fibrillation performance of the uncrosslinked Tencel fabric.

[0166] Furthermore, the Tencel fabric is treated with an antigen-fiber crosslinking agent™ to improve its antigen-fiber properties and tensile strength. In the S3 air-beating step, a first softener is used to improve the fabric's softness in advance. In the S4 polishing and dyeing step, an anti-abrasion agent is added to the bath. In the sand washing process, a second softener is added in advance to soften the fabric.

[0167] Furthermore, a third softener is added during the sand washing process to overcome the natural defect that Tencel fabric becomes stiff and easily scratched when exposed to water during processing. This improves the polishing effect and enhances the anti-fibrillation properties, washability, household washing resistance, and tensile strength of the Tencel fabric. The Tencel fabric prepared in this application not only has excellent anti-fibrillation properties but also excellent household washing resistance and high tensile strength. It also reduces the number of scratches on the Tencel fabric and improves the yield.

[0168] The Tencel fabric prepared in this application exhibits significantly improved antigen-fiberization properties, meeting customer requirements, enhancing fabric quality, and overcoming the major drawback of Tencel's poor washability. Simultaneously, the fabric's hand feel and washability are significantly improved, enhancing the wearability of the finished fabric. Furthermore, the number of abrasion points on the Tencel fabric is significantly reduced, increasing the yield rate.

[0169] The experimental results of Examples 6-10 and Example 1, combined with Table 6-7, show that desizing treatment promotes anti-fibrillation. Poor desizing or failure to desizing may lead to decreased resistance to household washing, increased abrasion points, and decreased tensile strength. This may be because failure to desizing or poor desizing may result in a stiffer Tencel fabric, leading to an increase in abrasion points. Desizing or poor desizing results in poor subsequent softening and finishing treatments, leading to a decrease in the tensile strength of the Tencel fabric.

[0170] The experimental results of Examples 13-15 and Example 1 show that finishing treatment after the first and second sand washing in S5 can improve the antigen fibrillation of Tencel fabric and increase its breaking strength. This may be because the antigen fibrillation crosslinking agent can combine with the active groups on the Tencel fabric. Through the crosslinking of macromolecules, the fibers are more tightly bound together, thereby improving the breaking strength of the Tencel fabric.

[0171] The anti-fibrous crosslinking agent has a wrapping effect on the fibers of Tencel fabric, which reduces the number of abrasion points and increases the number of times Tencel fabric can withstand household washing.

[0172] The test results of Examples 17-20 and Example 1 show that: in the S3 air beater, the first softener is silicone oil HC-821, which makes the Tencel fabric soft and the binding force between silicone oil HC-821 and the fiber is appropriate, without affecting the subsequent desizing and polishing treatment. However, the first softener is cationic durable softener TX, which may be detrimental to the subsequent desizing and polishing treatment effect because of the strong binding force between it and the Tencel fiber.

[0173] In the softening process following the first and second sand washes of S5, the second softener used is a cationic durable softener TX. This is likely because cationic macromolecular softeners have a high affinity and directness with fibers. The cationic durable softener TX adheres tightly to the surface of Tencel fibers, effectively reducing abrasion points and improving the tensile strength, anti-fiberization, and water resistance of Tencel fabrics.

[0174] Test 4: Color fastness to rubbing

[0175] Test method: Tested according to GB / T 3920-2008 "Textiles - Tests for color fastness to rubbing".

[0176] Test samples: The antigen-fiberized Tencel fabrics prepared in Examples 1-20 were used as test samples, and the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6 were used as control samples.

[0177] Test results: The color fastness to rubbing of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6 is shown in Table 7.

[0178] Table 7 lists the test results of the rubbing color fastness of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6.

[0179]

[0180]

[0181] Combining Examples 1-20 and Comparative Examples 1-6 with Table 7, it can be seen that:

[0182] This application demonstrates that through multiple fibrillation and polishing processes, the outer layer of Tencel is continuously opened, new fibers grow, and then these fibers are removed, thereby enhancing the antigen fibrillation properties of the uncrosslinked Tencel fabric. Furthermore, the Tencel fabric is finished using an antigen fibrillation crosslinking agent™, resulting in a Tencel fabric with excellent antigen fibrillation properties and improved colorfastness to rubbing. This may be because: firstly, the application has already undergone a secondary polishing process before dyeing, allowing the voids in the Tencel fibers to be better exposed in the dye bath, enabling the dye to penetrate the fiber interior more effectively; secondly, after dyeing, the Tencel fabric is finished using an antigen fibrillation crosslinking agent™, which can combine with the active groups on the Tencel fabric, making the fibers more tightly bound through crosslinking, thus encapsulating the fibers and reducing the outward migration of dye from the Tencel fibers. This results in the Tencel fabric of this application having good colorfastness to rubbing.

[0183] Experiment 5: Hand Feel Rating Test Method: The hand feel rating mainly refers to the overall hand feel of the fabric, including softness, fluffiness, and smoothness. The hand feel rating is conducted by 5 professional inspectors, and the average value is taken. The rating is divided into 1-5 levels. The lower the rating, the worse the hand feel of the fabric.

[0184] Test samples: The antigen-fiberized Tencel fabrics prepared in Examples 1-20 were used as test samples, and the antigen-fiberized Tencel fabrics prepared in Comparative Examples 1-6 were used as control samples.

[0185] Test results: The hand feel ratings of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6 are shown in Table 8.

[0186] Table 8 lists the hand feel rating results of the antigen-fiberized Tencel fabrics prepared in Examples 1-20 and Comparative Examples 1-6.

[0187]

[0188] Combining Examples 1-20 and Comparative Examples 1-6 with Table 8, it can be seen that:

[0189] The hand feel of the antigen-fiberized Tencel fabrics prepared in Examples 1-3, 4-8 and 11-15 is better than that of the antigen-fiberized Tencel fabrics prepared in Examples 9-10, 16-20 and Comparative Examples 1-6.

[0190] The results indicate that the Tencel fabrics prepared by the processes in Examples 1-20 still have a better hand feel than those in Comparative Examples 1-6 after 50 washes. Furthermore, the Tencel fabrics prepared in Examples 1-3 still have a good hand feel after multiple washes of 50 times. This may be because the preparation process of the first softener silicone oil HC-821, the anti-abrasion agent, the second softener, the cationic durable softener TX, and the antigen fiberizing crosslinking agent has a good effect. Moreover, the antigen fiberizing, desizing, softening, and finishing effects of the Tencel fabric are synergistic, resulting in a better hand feel for the prepared Tencel fabric.

[0191] The embodiments described in this application are merely illustrative of this application and are not intended to limit it. Those skilled in the art can make modifications to these embodiments without contributing any inventive step after reading this specification, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A preparation process for an antigen-modified Tencel fabric, characterized in that, The preparation steps include the following: S1 drawing process: The first pre-product is prepared by washing the Tencel blank in nine stages at a temperature of 65-95℃. In the second and third stages of washing, 2-5g / L of expansion agent is added and the speed is controlled at 30-50m / min. S2 Polishing treatment: The first pre-product is polished with polishing liquid for 30 min. The vibration frequency of the polishing treatment is 110-130 Hz and the temperature is 50-70℃. Then, it is dehydrated to obtain the second pre-product. The polishing solution comprises a first polishing enzyme with a mass concentration of 0.5-2 g / L and water; S3 Air Beating: The second pre-product is placed in 3-7 g / L of the first fabric softener and continuously wet beaten at a temperature of 120-140℃ and an air volume of 50-70%, with the machine speed controlled at 15-30 m / min, to prepare the third pre-product. S4 Polishing and Staining: The third pre-product is placed in water containing 2-3 g / L of anti-abrasion agent, and then a pH adjuster is added to adjust the pH to 5-6; then 0.3%-1% owf of the second polishing enzyme is added, and the temperature is raised to 45-65℃ for polishing treatment for 12-17 min; then the polished third pre-product is stained; then soda ash is added for color fixation, and the temperature is maintained for 20-50 min; then soaping and drying are performed to prepare the fourth pre-product; S5 First and Second Sand Washing Treatments: The fourth pre-product is placed in water, and 0.5-1 g / L of the second softener is added at a speed of 30-50 rpm and a temperature of 40-60℃. The first sand wash is then performed for 3-8 minutes. Then, 0.5-2 g / L of the third polishing enzyme is added, and the second sand wash is performed for 10-30 minutes. The product is then cooled, drained, and dehydrated to obtain the fifth pre-product. S6 Annular Drying and Cooling Treatment: The fifth pre-product is annularly dried at 70-90℃ for 20-40 minutes, and then cooled to obtain the sixth pre-product; S7 Stretching: The sixth pre-processed product is stretched to prepare antigen-fiberized Tencel fabric; The first polishing enzyme is the neutral polishing enzyme ESconc; The second polishing enzyme is neutral polishing enzyme 1111, and the third polishing enzyme is neutral polishing enzyme EZconc.

2. The preparation process of an antigen-modified Tencel fabric according to claim 1, characterized in that: The water washing temperatures for the nine-segment water washing process in the S1 wire drawing process are set sequentially to 65℃, 75℃, 85℃, 85℃, 95℃, 95℃, 80℃, 70℃, and 60℃. In the S2 polishing process, the polishing solution also includes a desizing enzyme with a mass concentration of 0.2-1 g / L.

3. The preparation process of an antigen-modified Tencel fabric according to claim 2, characterized in that: The desizing enzyme is a wide-temperature desizing enzyme EAconc.

4. The preparation process of an antigen-modified Tencel fabric according to claim 1, characterized in that: In the S3 air beating process, the first fabric softener is a silicone oil fabric softener.

5. The preparation process of an antigen-modified Tencel fabric according to claim 1, characterized in that: In the S4 polishing and dyeing process, after adding the anti-abrasion agent to water, the third pre-product is placed in an aqueous solution containing the anti-abrasion agent, the aqueous solution containing the anti-abrasion agent is heated to 50°C, and then a pH adjuster is added. During the dyeing process, reactive dye and sodium sulfate are added sequentially, the temperature is raised to 60°C, and the temperature is maintained for 20 minutes.

6. The preparation process of an antigen-modified Tencel fabric according to claim 1, characterized in that: In the first and second sand washing processes of S5, the second sand washing includes a first sand washing and a second sand washing of equal duration. After the first sand washing, the fourth pre-product after the first sand washing process is pulled out, re-organized, and then put back into the fabric, followed by the second sand washing.

7. The preparation process of an antigen-modified Tencel fabric according to claim 1, characterized in that: In the first and second sand washing processes of S5, after the second sand washing process, 0.5 g / L acetic acid and 0.5-1 g / L cationic durable softener TX are added, and the mixture is sand washed for 5 minutes for softening treatment. Then, the mixture is cooled, drained, and dehydrated. The second softener is cationic durable softener TX.

8. The preparation process of an antigen-modified Tencel fabric according to claim 7, characterized in that: After the softening treatment, 5-20 g / L of antigen fibrillating crosslinking agent is added for finishing treatment, the temperature is raised to 50-65℃, kept at the temperature for 2-15 min, and then cooled, drained and dehydrated.

9. The preparation process of an antigen-modified Tencel fabric according to claim 1, characterized in that: In the S6 ring drying and cooling process, the cooling process involves 10 minutes of cold air treatment.

10. An antigen-modified Tencel fabric, characterized in that, It is prepared using the preparation process of antigen-fiberized Tencel fabric as described in any one of claims 1-9.

Images