Light and thin full-cotton three-proofing fabric and preparation method thereof

Abstract

The present application relates to the technical field of fabric, especially to a light and thin full-cotton three-proof fabric, a preparation method thereof and application thereof. The present application discloses a preparation method of a light and thin full-cotton three-proof fabric, comprising the following steps: S1. preparing high-count cotton yarn with 80-100S / 1; S2. preparing the high-count cotton yarn into a fabric through a weaving process, and pretreating the fabric; S3. dyeing the pretreated fabric, washing after dyeing, and adjusting the pH value of the fabric to 4-5; S4. applying a three-proofing agent on the dyed and washed fabric, and performing setting treatment; S5. pre-shrinking the set fabric to obtain a light and thin full-cotton three-proof fabric. The preparation method can accurately control the process parameters of spinning, weaving, sizing, pretreatment, dyeing, three-proofing agent, setting and other links, and a full-cotton fabric with lightness, softness, excellent three-proofing performance and good washing resistance is obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabric, in particular to a light and thin all-cotton three-proof fabric, a preparation method thereof and an application thereof. BACKGROUND

[0002] With the improvement of living standards and the increasing demand for fabric functionality by consumers, three-proof fabric (i.e. waterproof, oil-proof and stain-proof fabric) gradually attracts the market due to its unique practical performance. Through special process treatment, three-proof fabric can effectively block the penetration of water, oil and stains, and is very suitable for application in daily clothing and outdoor equipment, especially outdoor clothing for children, which can effectively protect them when playing.

[0003] At present, three-proof fabrics on the market are mainly divided into two categories: chemical fiber fabrics and natural fiber fabrics. Chemical fiber fabrics, such as 100% polyester fiber or nylon fiber, are widely used due to their good three-proof effect. This type of fabric enhances the three-proof performance by laminating a film on the inner layer. However, this type of fabric generally has poor air and moisture permeability, and is prone to produce a stuffy feeling after wearing. In addition, it has a hard hand feeling, is prone to produce sound, and has poor antistatic performance. Another type of fabric is made of natural fibers such as cotton and other cellulose fibers. Compared with chemical fiber fabrics, this type of fabric has better air and moisture permeability and antistatic performance, and is more suitable for human wear. However, in order to achieve three-proof effect, conventional cotton fabrics usually need to use thick woven fabrics and undergo three-proof treatment through post-finishing process. However, the hand feeling of the fabric after such treatment becomes stiff and heavy, greatly reducing the comfort of wearing, and lacking the lightness of light and thin fiber materials.

[0004] In order to balance lightness and three-proof performance, some manufacturers try to use light and thin cotton fabrics for three-proof finishing. However, after completing the three-proof finishing, this type of fabric often faces the problem of physical performance decline and unbalanced hand feeling, which is difficult to meet the actual wearing demand. In addition, most three-proof fabrics have a significant reduction in three-proof effect after washing, which is difficult to meet the washing resistance requirement.

[0005] Therefore, the present application provides a light and thin all-cotton three-proof fabric, a preparation method thereof and an application thereof. SUMMARY

[0006] The present application provides a light and thin all-cotton three-proof fabric, a preparation method thereof and an application thereof. 100% long-staple cotton is used as raw material, and 80-100S / 1 high-count cotton yarn is prepared by using compact spinning technology. By precisely controlling the process parameters of each link such as spinning, weaving, sizing, pretreatment, dyeing, three-proof auxiliary agent and setting, a light and thin all-cotton fabric with excellent three-proof performance and good washing resistance is finally obtained.

[0007] The technical scheme adopted by the present application to solve its technical problems is:

[0008] In a first aspect, the present application provides a preparation method of a light and thin full-cotton three-proofing fabric, comprising the following steps:

[0009] S1. Selecting long-staple cotton as raw material, and preparing 80-100S / 1 high-count cotton yarn through compact spinning process;

[0010] S2. Preparing the high-count cotton yarn into a fabric through weaving process, and performing pretreatment on the fabric; the pretreatment comprises singeing, cold pile desizing and mercerization;

[0011] S3. Dyeing the fabric after the pretreatment, washing after dyeing, and adjusting the pH value of the fabric to 4-5;

[0012] S4. Applying three-proofing assistants on the fabric after dyeing and washing, and performing setting treatment;

[0013] S5. Pre-shrinking the fabric after setting, controlling the shrinkage rate of the fabric to be within 3%, and obtaining the light and thin full-cotton three-proofing fabric.

[0014] In one or more technical solutions, in step S1, the compact spinning process comprises the following steps:

[0015] Opening and cleaning cotton: selecting Xinjiang long-staple cotton with fiber length of more than 33 mm as raw cotton fiber;

[0016] Carding: further carding the cotton lap after opening and cleaning through a carding machine, setting the speed of the cylinder at 330-350 r / min, the speed of the doffer at 6.2-6.4 / min, the speed of the licker-in at 810-830 r / min, the cover plate gauge of the cylinder at 0.25 mm / 0.3 mm / 0.2 mm / 0.25 mm / 0.3 mm, and the cylinder-doffer gauge at 0.13 mm, and finally obtaining sliver with actual dry weight of 12.5 g;

[0017] Drawing: drawing the sliver after carding through two-drawing process, setting the total draft ratio at 6.2, the output speed of the drawing frame at 16-20 m / min, the first drawing speed at 220 m / min, and the last drawing speed at 200 m / min;

[0018] Roving: setting the front roller speed at 4.22-4.69 m / min, and the spindle speed at 480 r / min;

[0019] Spinning: setting the small roller gauge at 18x34 mm, the roller speed at 190 rpm, and the back-zone draft ratio at 1.4;

[0020] Winding: set the groove cylinder speed to 1200 m / min, and the winding tension to 8.0 cN.

[0021] In one or more of the technical solutions, in step S1, the high-count cotton yarn has an average yarn strength of 270-290 cN / Tex, a evenness CV of 11-14%, (3±1) pieces / km of -50% thin places, (55±10) pieces / km of +50% thick places, (20±5) pieces / km of +200% neps, a yarn hairiness index H value of 2.0-5.0, and a twist of 1300-1600 twists / m.

[0022] In one or more of the technical solutions, in step S2, the high-count cotton yarn is prepared into a fabric through a weaving process and a sizing process.

[0023] The sizing process has the following sizing process for sizing the yarn: 80-90 kg / m of starch 3 , 30-45 kg / m of PVA 3 , 11% of solid content, 35-40 m / m of sizing ink length 3 , 4.6-5.8% of moisture regain, a sizing tank temperature of ≥90℃, a viscosity of 9-10 s, a sizing speed of 4.1 m / min, a cylinder tension of 27±1 kN, and a beam tension of 13±2 kN, and the sizing rate is controlled to be 16-18.5%.

[0024] In one or more of the technical solutions, in step S2, the pre-treatment process comprises the following steps:

[0025] Singeing: a one-reverse-two-forward singeing process is adopted, the flame temperature is 1000-1100℃, and the speed is 110-120 m / min, so that the fabric surface becomes smooth, and the quality requirement is ≥4 levels;

[0026] Cold pad-batch desizing: pure alkali 50-70 g / L, hydrogen peroxide 15 g / L, cold pad-batch scouring agent TF-125LA 10 g / L, and penetrating agent ERKANTOL NR 1-2 g / L are used, the room temperature stacking time is 24 hours, and then water washing treatment is performed, and the desizing rate is more than 80%;

[0027] Mercerizing: a light mercerizing process is adopted, the caustic soda concentration is 20-24 g / L, the speed is 60-70 m / min, the temperature is controlled to be 15-25℃, and the pick-up rate is 65%-75%.

[0028] In one or more of the technical solutions, in step S3, the dyeing process comprises the following steps:

[0029] The mercerized fabric is dyed with reactive dyes on a continuous pad dyeing machine, and the process flow is: immersion pad dyeing solution→ hot air pre-drying→ drying cylinder drying→ stacking→ immersion pad alkali solution→ steaming color fixing→ cold water washing→ hot water washing→ soaping→ weak acid water washing.

[0030] After dyeing, the fabric is washed thoroughly, and the fabric is washed multiple times by a continuous or jet washing machine.

[0031] In one or more technical solutions, in step S4, the three-proofing auxiliary agent comprises the following contents of raw materials:

[0032] Water and oil repellent agent PHOBOL NB-NH 40-50 g / L

[0033] Crosslinking agent PHOBOL EXT.SFB 25-35 g / L

[0034] Softener Megasoft CEC-01 6-12 g / L.

[0035] In one or more technical solutions, in step S4, the baking temperature during setting treatment is 170°C, and the time is 1 minute.

[0036] In a second aspect, the application provides a light and thin full-cotton three-proofing fabric, which is prepared by the preparation method in the first aspect.

[0037] In one or more technical solutions, the specifications of the fabric are 80sx80s+80s+20D, and the warp and weft density is 190x130.

[0038] The application has the following beneficial effects:

[0039] High-count and high-specification pure cotton yarns are adopted, high-quality cotton yarns are prepared by controlling spinning process parameters, meanwhile, weaving process and sizing process parameters are optimized, singeing is performed to more than 4 levels, pretreatment process is strictly controlled, mild pretreatment process is adopted, thorough washing is performed after dyeing, the fabric surface is kept clean and permeable, the pH of the fabric surface before three-proofing auxiliary agent treatment is weakly acidic, finally, different brands and different amounts of three-proofing auxiliary agent formulations are optimized, and a light and thin full-cotton three-proofing fabric with good physical indexes and wash resistance is obtained. BRIEF DESCRIPTION OF DRAWINGS

[0040] The application will be further described below in combination with the drawings and examples.

[0041] Figure 1 The application is a light and thin full-cotton three-proofing fabric, and the application result schematic diagram of the light and thin full-cotton three-proofing fabric is shown in the figure.

[0042] Figure 2 The three-proofing auxiliary agent has three-proofing efficacy, and the schematic diagram of the three-proofing efficacy of the three-proofing auxiliary agent is shown in the figure.

[0043] Figure 3 The three-proofing auxiliary agent has three-proofing efficacy, and the schematic diagram of the three-proofing efficacy of the three-proofing auxiliary agent is shown in the figure.

[0044] Figure 4 A summary of the test results for the three-proofing fabrics of Examples 1-10. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved in the present application more clear and explicit, the present application will be further described in detail below in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0046] In the present application, the term "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. Wherein A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0047] In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can represent a, b, c, ab (i.e. a and b), a c, b c, or abc, wherein a, b, and c can be single or multiple.

[0048] It should be understood that in various embodiments of the present application, the size of the sequence number of the above processes does not mean the order of execution, and part or all of the steps can be executed in parallel or in sequence, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0049] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0050] The weight of the related components mentioned in the specification of the embodiments of the present application can not only refer to the specific content of each component, but also represent the proportional relationship between the weights of each component, therefore, as long as the content of the related components in the specification of the embodiments of the present application is enlarged or reduced in proportion, it is within the scope disclosed in the specification of the embodiments of the present application. Specifically, the mass mentioned in the specification of the embodiments of the present application can be μg, mg, g, kg and other mass units commonly known in the chemical field.

[0051] Preparation example 1, a method for preparing a light and thin full-cotton three-proofing fabric, and the specific production process is as follows:

[0052] Spinning→weaving→cloth inspection→grey fabric singeing→boiling→silk screening→dyeing→drying→three-proofing agent treatment→tentering→baking→pre-shrinking→finished product inspection.

[0053] In the present application, by optimizing the spinning process, the generation of yarn hairiness in the entire fabric production process is minimized, and at the same time, high-strength yarn is obtained to the maximum extent:

[0054] Specifically, the spinning process comprises the following steps:

[0055] (1) Yarn preparation: 80-100S / 1 compact spinning yarn, twist 1300-1600 twists / meter;

[0056] Spinning: the spinning process comprises: opening and cleaning cotton→carding→slivering→roving→spinning→winding→yarn finished product

[0057] Opening and cleaning cotton: the raw cotton fiber selects Xinjiang long-staple cotton with fiber length of more than 33 mm, and the fiber main length is not less than 29 mm and the length uniformity is good.

[0058] Carding: the cotton lap after opening and cleaning is further carded by using a carding machine, the tin drum rotating speed is set to 330-350 r / min, the doffer rotating speed is set to 6.2-6.4 / min, the licker-in rotating speed is set to 810-830 r / min, the tin drum cover plate gauge is set to 0.25 mm / 0.3 mm / 0.2 mm / 0.25 mm / 0.3 mm, the tin drum doffer gauge is set to 0.13 mm, and finally the actual dry weight of the sliver is 12.5 g, and the weight deviation is 1.45%.

[0059] Slivering: the slivering process is adopted to sliver the sliver after carding, the total draft ratio is set to 6.2, the low-speed process principle is followed, and the slivering machine output speed is set to 16-20 m / min. The slivering speed is: 220 m / min for the first pass and 200 m / min for the last pass.

[0060] Roving: the low-speed process principle is followed in the roving stage, the front roller speed is set to 4.22-4.69 m / min, the spindle speed is set to 480 r / min, at the same time, the roving tension is reduced, so that the holding force and draft force between the cotton fibers are adapted, and the deterioration of the sliver and the accidental draft of the roving are prevented.

[0061] Spinning: the low-speed and compact spinning process is adopted in the spinning process, the small roller gauge is 18x34 mm, the roller speed is 190 rpm, and the back zone draft ratio is 1.4.

[0062] Winding: winding process adopts the principle of "small tension, low speed, and elastic", the higher the speed, the greater the friction between the yarn and the groove cylinder, the greater the damage to the yarn, and the more the hairiness increases, so the groove cylinder speed is set to 1200 m / min, and the winding tension is 8.0 cN.

[0063] Final yarn index:

[0064] Take 80s yarn index as an example: the average strength of the yarn is 270-290 cN / Tex, the evenness CV is 11-14%, the -50% thin places are (3±1) pieces / km, the +50% thick places are (55±10) pieces / km, the +200% neps are (20±5) pieces / km, the yarn hairiness index H value is 2.0-5.0, and the yarn twist is 1300-1600 twists / m.

[0065] Specifically, weaving is performed first, and then sizing is performed.

[0066] The weaving process and sizing process are set as follows:

[0067] Weaving: the loom reed and harness wire ensure no wear and rust, and prevent the yarn from being rubbed and raised during weaving.

[0068] Sizing: the fabric structure is a plain structure, and the friction frequency is high during weaving, so the sizing rate is a little higher, thereby improving the warp strength, reducing yarn wear, weaving breakage, and fabric defect problems. Therefore, the sizing process is as follows: starch 80-90 kg / m 3 , PVA 30-45 kg / m 3 , solid content 11%, sizing ink length 35-40 m / m 3 , moisture regain 4.6-5.8% (to avoid the influence of flying fluff entanglement caused by weaving raising on weaving, the moisture regain is controlled within this range), sizing tank temperature ≥ 90℃, viscosity 9-10 s, sizing speed 4.1 m / min, cylinder tension (27±1) kN, beam tension (13±2) kN, sizing rate controlled at 16-18.5%;

[0069] Specifically, the pretreatment process includes the following processes: singeing, cold pile desizing, and mercerizing.

[0070] Singeing: one reverse two normal singeing process is adopted, the flame temperature is 1000-1100℃, and the speed is 110-120 m / min, so that the fabric surface becomes smooth and the quality requirement is ≥ 4 levels.

[0071] Cold pad-batch desizing: thin fabric, the pretreatment process can not be too strong, conventional long car strong alkali and hydrogen peroxide desizing process affect the fabric strength, therefore, the cold stack process is adopted, using soda (sodium carbonate) instead of strong alkali (sodium hydroxide), the effect is mild, the damage to the fiber is small; The specific process parameters are: soda 50-70g / L, hydrogen peroxide 8-15g / L, cold stack scouring agent TF-125LA 10g / L, penetrant ERKANTOL NR: 1-2g / L, room temperature stacking time is 24 hours, then water washing treatment, desizing rate is more than 80%; In the embodiment, the process parameters selected are: soda 50g / L, hydrogen peroxide 15g / L, cold stack scouring agent TF-125LA 10g / L, penetrant ERKANTOL NR: 1g / L

[0072] Mercerization: light mercerization process is also required: caustic soda concentration is 15-24g / L, speed is 60-70m / min, temperature control is 15-25℃, rolling rate is 65%-75%; Specifically, in the embodiment, the process parameters selected are: caustic soda concentration is 22 / L, speed is 60m / min, temperature control is 15℃, rolling rate control is 65%-75%.

[0073] Specifically, the dyeing process is:

[0074] After mercerization, the fabric is dyed with reactive dyes on a continuous pad dyeing machine, the process flow is: immersion of dyeing liquid→ hot air pre-drying→ drying cylinder drying→ stacking→ immersion of salt alkali liquid→ steaming and color fixing→ cold water washing→ hot water washing→ soaping→ weak acid water washing.

[0075] After dyeing, the fabric is washed thoroughly, and the fabric is washed multiple times by a continuous or jet washing machine to remove hydrolyzed dyes, salt, leveling agents, penetrants, fixing agents and the like remaining on the fabric, because these substances greatly affect the film forming effect and wash resistance of subsequent three-proofing assistants. At the same time, the pH value of the fabric before three-proofing finishing is ensured, and the washed fabric is washed again in clean water with a slightly acidic pH value of about 4.5, and the fabric must be washed thoroughly, and there is no cationic substance on the fabric surface, and the pH value of the fabric is adjusted to 4-5. Because the alkaline residues on the fabric make the pH value of the waterproof and oil repellent agent working solution alkaline, which affects the stability of the working solution, and then affects the cross-linking effect of the three-proofing finishing agent and the fabric, resulting in poor three-proofing finishing effect.

[0076] Specifically, the steps of three-proofing assistant treatment are:

[0077] After dyeing and washing, the fabric is dried and then subjected to three-proofing finishing. During three-proofing finishing, the dry fabric is immersed through the fabric tank of the setting machine, the liquid carrying rate is 60-70%, and then it is baked at 160-170℃ for 1min. If the baking temperature is too high, the color will change, and the temperature control should be within 170℃.

[0078] The three-proofing assistants include the following contents of raw materials:

[0079] Anguo Chemical (China) Co., Ltd.: waterproof and oil repellent agent PHOBOL NB-NH 40-50 g / L, crosslinking agent PHOBOLEXT.SFB 25-35 g / L, softener Megasoft CEC-01 6-12 g / L; the machine table ingredient of the setting machine is cleaned, and the three assistants are fully mixed with the material.

[0080] 0.1-0.3 g / L of acetic acid is used to adjust the pH value of the three-proofing assistants to 6-6.5;

[0081] Specifically, the process of tentering and setting is that the impregnated fabric is taken out and baked at 170 DEG C for 1 min.

[0082] Specifically, the preshrinking treatment is that the fabric shrinkage is controlled within 3% to 0 by the preshrinking machine.

[0083] Specifically, the finished product inspection is that the fabric inspection is performed on the finished product cloth inspection machine.

[0084] The fabric obtained by the above finishing process has three-proofing function. Figures 1-2 The three-proofing fabric parameters are: yarn count parameters: 80sx80s+80s+20D, warp and weft density 190x130, and grammage 100 g / m 2 ; the hand feeling is soft, basically consistent with the hand feeling of conventional non-three-proofing finished fabric, and has excellent three-proofing function and excellent washability.

[0085] Embodiments 1-5 respectively relate to a preparation method of a light and thin full cotton three-proofing fabric, which comprises the process as described in Preparation 1, and the specific process parameters and control conditions are as described in Preparation Example 1, and the process parameters are controlled within the corresponding ranges.

[0086] The raw materials and content compositions of the three-proofing assistants are as shown in Embodiments 1-5, and the fabric is impregnated in the three-proofing assistants. Figure 3

[0087] Embodiment 6

[0088] A preparation method of a light and thin full cotton three-proofing fabric, which comprises the process as described in Preparation 1, and the specific process parameters and control conditions are as described in Preparation Example 1, and the process parameters are controlled within the corresponding ranges.

[0089] The raw materials and content compositions of the three-proofing assistants are as shown in Embodiments 1-5; and the fabric is impregnated in the three-proofing assistants. Figure 3

[0090] Embodiment 7​​

[0091] A preparation method of a light and thin full-cotton three-proofing fabric, comprising the process as described in Preparation 1, and the specific process parameters and control conditions as described in Preparation Example 1, and the process parameters are controlled within the corresponding ranges.

[0092] Wherein when the three-proofing agent treatment is performed, the raw materials and content composition of the three-proofing agent are as shown in Table 1, and the fabric is immersed in the three-proofing agent. Figure 3

[0093] Preparations 8-10 respectively relate to a preparation method of a light and thin full-cotton three-proofing fabric, which comprises the process as described in Preparation 1, and the specific process parameters and control conditions as described in Preparation Example 1, and the process parameters are controlled within the corresponding ranges.

[0094] Wherein when the three-proofing agent treatment is performed, the raw materials and content composition of the three-proofing agent are as shown in Table 1, and the fabric is immersed in the three-proofing agent. Figure 3

[0095] The three-proofing fabrics prepared in Examples 1-10 are subjected to the following performance detection, and the related detection results are summarized in Table 2. Figure 4

[0096] 1. Water repellency is tested by GB / T 4745-2012 water contact method;

[0097] 2. Oil repellency is tested by GB / T 19977-2005;

[0098] 3. Easy soil release is tested by FZ / T 01118-2012 wiping method;

[0099] 4. High-salt thin-state fermented soy sauce is ≥3-4;

[0100] 5. Washing method is 4N, adding a detergent once, and continuously washing for 3 cycles, and drying at 60 degrees;

[0101] 6. Soft hand feeling (bending stiffness (mN·cm)) is tested by GB / T 18318.1-2009 bevel method standard;

[0102] 7. Breaking strength is tested by GB / T 3923.2-2013 standard;

[0103] 8. Tear strength is tested according to GB / T 3917.2-2009 standard;

[0104] 9. Moisture permeability is tested according to GB / T 12704.1-2009 (test box environment: 38.0℃, 90.0% moisture permeability time: 1h, moisture absorption method) standard.

[0105] From​​​Figure 3 、 Figure 4 It can be seen that:

[0106] The fabric of Example 1

[0107] Water and oil repellency: The water and oil repellency before and after washing are both poor, especially the water repellency after washing, which significantly decreases. This is the main reason for the overall effect being rated as “general”.

[0108] Stain release: The stain release before and after washing basically meets the standard requirements, but the performance after washing decreases slightly.

[0109] Soft hand feeling: The soft hand feeling decreases, but it is still within the acceptable range.

[0110] Mechanical properties: The tear and breaking strength are high, indicating that the mechanical properties of the fabric are good.

[0111] Moisture permeability: The moisture permeability is good, indicating that the air and moisture permeability of the fabric is good.

[0112] Therefore, the overall effect of Example 1 is rated as “general”, mainly because the amount of water and oil repellent and crosslinking agent is insufficient, resulting in poor water and oil repellency before and after washing. Although the stain release, soft hand feeling, mechanical properties, and moisture permeability are good, these advantages cannot make up for the insufficient three-proofing performance.

[0113] The fabric of Example 2

[0114] Water and oil repellency: The water repellency of Example 2 is acceptable before and after washing, but the oil repellency before and after washing is poor, especially the oil repellency before washing is only 3 levels, which is lower than the standard requirement. This is one of the main reasons for the overall effect being rated as “general”.

[0115] Stain release: The stain release before and after washing basically meets the standard requirements, but the performance after washing decreases slightly.

[0116] Soft hand feeling: The soft hand feeling is good, indicating that the use of softening agent effectively improves the hand feeling of the fabric.

[0117] Mechanical properties: The tear and breaking strength are high, indicating that the mechanical properties of the fabric are good.

[0118] Therefore, the overall effect of Example 2 is rated as “general”, mainly because the amount of water and oil repellent and crosslinking agent is insufficient, resulting in poor oil repellency before and after washing. Although the stain release, soft hand feeling, mechanical properties, and moisture permeability are good, these advantages cannot completely make up for the insufficient oil repellency performance.

[0119] The fabric of Example 3

[0120] Water repellency and oil repellency: The water repellency of Example 3 was fair before and after washing, but the oil repellency was poor before and after washing, especially before washing, which was only 3-4 levels, close to the lower limit of the standard requirement. This was one of the main reasons for the overall effect being rated as "fair".

[0121] Easy soil release: The easy soil release was basically in line with the standard requirements before and after washing, but the performance after washing decreased slightly.

[0122] Soft hand feel: The soft hand feel was good, indicating that the use of softener effectively improved the hand feel of the fabric.

[0123] Mechanical properties: The tear strength and breaking strength were high, indicating that the mechanical properties of the fabric were good.

[0124] Moisture permeability: The moisture permeability was good, indicating that the fabric had good air and moisture permeability.

[0125] Therefore, the overall effect of Example 3 was rated as "fair", mainly because the amount of water and oil repellent and crosslinking agent was insufficient, resulting in poor oil repellency before and after washing. Although the easy soil release, soft hand feel, mechanical properties and moisture permeability were good, these advantages could not completely make up for the lack of oil repellency.

[0126] Fabric of Example 4

[0127] Water repellency and oil repellency: The water and oil repellency of Example 4 was good before and after washing, especially the oil repellency after washing, which remained at 3-4 levels, meeting the standard requirements. This indicates that the use of three-way auxiliary Nuva N4547 lig significantly improves the three-way performance.

[0128] Easy soil release: The easy soil release was basically in line with the standard requirements before and after washing, with a slight decrease in performance after washing, but still within an acceptable range.

[0129] Soft hand feel: The soft hand feel was very good, indicating that the use of softener effectively improved the hand feel of the fabric.

[0130] Mechanical properties: The tear strength and breaking strength were high, indicating that the mechanical properties of the fabric were good.

[0131] Therefore, the overall effect of Example 4 was rated as "excellent", mainly because:

[0132] Use of three-way auxiliary Nuva N4547 lig: This comprehensive three-way auxiliary significantly improves the effects of water, oil and soil resistance, especially the performance after washing.

[0133] Softener usage: 12 g / L of softener Megasoft CEC-01 effectively improved the hand feel of the fabric, making it very soft.

[0134] Mechanical properties and moisture permeability: The tear and break strength were high, and the moisture permeability was very good, reaching a high level.

[0135] Fabric of Example 5

[0136] Water and oil repellency: The water and oil repellency of Example 5 performed very well before and after washing, especially the oil repellency before washing reached level 4, and the oil repellency after washing remained unchanged, meeting the standard requirements. This indicates that the use of high amounts of water and oil repellent and crosslinking agent significantly improves the three-proofing performance.

[0137] Easy soil release: Easy soil release performed well before and after washing, and the performance after washing remained unchanged, meeting the standard requirements.

[0138] Soft hand feel: The soft hand feel was very good, indicating that the use of softener effectively improved the hand feel of the fabric.

[0139] Mechanical properties: The tear and break strength were high, indicating that the mechanical properties of the fabric were very good.

[0140] Moisture permeability: The moisture permeability was very good, indicating that the fabric had excellent air and moisture permeability.

[0141] Therefore, the overall effect of Example 5 was rated as "Excellent+", mainly because:

[0142] High amounts of water and oil repellent and crosslinking agent: 50 g / L of water and oil repellent PHOBOL NB-NH and 35 g / L of crosslinking agent PHOBOL EXT. SFB provided stronger three-proofing performance, especially the oil repellency after washing remained unchanged, meeting the standard requirements.

[0143] Use of fluorine-free water repellent: 30 g / L of fluorine-free water repellent CWR-SH not only provided additional water repellency, but also was more environmentally friendly.

[0144] Softener usage: 6 g / L of softener Megasoft CEC-01 effectively improved the hand feel of the fabric, making it very soft.

[0145] Mechanical properties and moisture permeability: The tear and break strength were high, and the moisture permeability was very good, reaching a very high level.

[0146] Fabric of Example 6

[0147] Water and oil repellency: The water and oil repellency of Example 6 performed very well before and after washing, especially the oil repellency before washing reached level 4, and the oil repellency after washing remained at level 3-4, meeting the standard requirements. This shows that the moderate use of water and oil repellent and crosslinking agent significantly improves the three-proofing performance.

[0148] Easy soil release: The easy soil release performed well before and after washing, with a slight decrease in performance after washing, but still meeting the standard requirements. The high dosage of easy soil release aid PHOBOL NB-SR played a key role.

[0149] Soft hand feel: The soft hand feel was very good, indicating that the use of softener effectively improved the hand feel of the fabric.

[0150] Mechanical properties: The tear and break strength were high, indicating that the mechanical properties of the fabric were very good.

[0151] Moisture permeability: The moisture permeability was very good, indicating that the fabric had excellent air and moisture permeability.

[0152] Therefore, the overall effect of Example 6 was rated as "Excellent+", mainly because:

[0153] Moderate water and oil repellent and crosslinking agent: 40g / L of water and oil repellent PHOBOL NB-NH and 25g / L of crosslinking agent PHOBOL EXT. SFB provided good three-proofing performance, especially the oil repellency after washing remained at level 3-4, meeting the standard requirements.

[0154] High dosage of easy soil release aid: 50g / L of easy soil release aid PHOBOL NB-SR significantly improved the easy soil release, even after washing.

[0155] Use of softener: 6g / L of softener Megasoft CEC-01 effectively improved the hand feel of the fabric, making it very soft.

[0156] Mechanical properties and moisture permeability: The tear and break strength were high, and the moisture permeability was very good, with these properties reaching a very high level.

[0157] Fabric of Example 7

[0158] Water and oil repellency: The water and oil repellency of Example 7 performed very well before and after washing, especially the oil repellency before washing reached level 4, and the oil repellency after washing remained at level 3-4, meeting the standard requirements. This shows that the high dosage of water and oil repellent and moderate crosslinking agent significantly improves the three-proofing performance.

[0159] Easy soil release: The easy soil release performed well both before and after washing, with a slight decrease in performance after washing, but still met the standard requirements. The combination of the fluorine-free water repellent CWR-SH and the moderate crosslinker improved the easy soil release.

[0160] Soft hand feel: The soft hand feel was very good, indicating that the use of softener effectively improved the hand feel of the fabric.

[0161] Mechanical properties: The tear strength and breaking strength were high, indicating that the mechanical properties of the fabric were very good.

[0162] Moisture permeability: The moisture permeability was very good, indicating that the fabric had excellent air and moisture permeability.

[0163] Therefore, the overall effect of Example 7 was rated as "Excellent+", mainly because:

[0164] High dosage of water and oil repellent: The water and oil repellent PHOBOL NB-NH at 60 g / L provided stronger water and oil repellency, especially after washing, with the oil repellency maintained at 3-4 levels, meeting the standard requirements.

[0165] Moderate crosslinker: The crosslinker PHOBOL EXT. SFB at 25 g / L provided good crosslinking effect, enhancing the durability of the three-proofing performance.

[0166] Use of fluorine-free water repellent: The fluorine-free water repellent CWR-SH at 30 g / L not only provided additional water repellency, but also was more environmentally friendly.

[0167] Use of softener: The softener Megasoft CEC-01 at 6 g / L effectively improved the hand feel of the fabric, making it very soft.

[0168] Mechanical properties and moisture permeability: The tear strength and breaking strength were high, and the moisture permeability was very good, all reaching a very high level.

[0169] Fabric of Example 8

[0170] Water and oil repellency: The water and oil repellency of Example 8 performed well before washing, but the water and oil repellency after washing decreased slightly. Despite this, the water and oil repellency after washing still met the standard requirements. However, this decrease may be due to the insufficient dosage of crosslinker, resulting in poor durability of the three-proofing performance after washing.

[0171] Easy soil release: The easy soil release met the standard requirements both before and after washing, but the performance after washing decreased slightly.

[0172] Soft hand feel: The soft hand feel was good, indicating that the use of softener effectively improved the hand feel of the fabric.

[0173] Mechanical properties: Higher tear strength and breaking strength indicate better mechanical properties of the fabric.

[0174] Therefore, the overall effect of Example 8 is rated as "average", mainly because:

[0175] Insufficient amount of cross-linking agent: Despite the use of a high amount of water and oil repellent agent, the amount of cross-linking agent is relatively low, which may result in insufficient cross-linking effect, affecting the durability of the three-proofing performance, especially after washing.

[0176] Slightly decreased ease of stain removal: The ease of stain removal after washing has slightly decreased, but is still within an acceptable range.

[0177] Soft hand feel and mechanical properties: The soft hand feel and mechanical properties are good, but these advantages cannot fully compensate for the lack of three-proofing performance after washing.

[0178] Fabric of Example 9

[0179] Water and oil repellency: The water repellency of Example 9 is average before washing, but significantly decreases after washing, which does not meet the standard requirements. This is one of the main reasons why the overall effect is rated as "poor". Although the oil repellency performs well before and after washing, the lack of water repellency seriously affects the overall performance.

[0180] Ease of stain removal: The ease of stain removal before and after washing basically meets the standard requirements, but the performance after washing has slightly decreased.

[0181] Soft hand feel: The soft hand feel is good, indicating that the use of softening agents and silicone oil effectively improves the hand feel of the fabric.

[0182] Mechanical properties: Higher tear strength and breaking strength indicate better mechanical properties of the fabric.

[0183] Moisture permeability: The moisture permeability is good, indicating that the fabric has good air and moisture permeability.

[0184] Therefore, the overall effect of Example 9 is rated as "poor", mainly because:

[0185] Significant decrease in water repellency after washing: Despite the use of a high amount of water and oil repellent agent, the water repellency significantly decreases after washing, which does not meet the standard requirements. This may be due to the type or insufficient amount of cross-linking agent, resulting in poor durability of the three-proofing performance after washing.

[0186] Good oil repellency but not enough to compensate for the lack of water repellency: Although the oil repellency performs well before and after washing, the lack of water repellency seriously affects the overall performance.

[0187] Slightly decreased ease of stain removal: The ease of stain removal after washing has slightly decreased, but is still within an acceptable range.

[0188] Soft hand feel and mechanical properties: Soft hand feel and mechanical properties are good, but these advantages cannot completely make up for the deficiency in three-proofing performance.

[0189] Fabric of Example 10

[0190] Water and oil repellency: The water and oil repellency of Example 10 is generally good before washing, but the water and oil repellency after washing decreases significantly, which does not meet the standard requirements. This is one of the main reasons why the overall effect is rated as “poor”.

[0191] Easy soil release: The easy soil release basically meets the standard requirements before and after washing, but the performance after washing decreases slightly.

[0192] Soft hand feel: The soft hand feel is very good, indicating that the use of softener effectively improves the hand feel of the fabric.

[0193] Mechanical properties: The tear strength and breaking strength are high, indicating that the mechanical properties of the fabric are good.

[0194] Moisture permeability: The moisture permeability is very good, indicating that the air and moisture permeability of the fabric is good.

[0195] Therefore, the overall effect of Example 10 is rated as “poor”, mainly because:

[0196] Significant decrease in water and oil repellency after washing: Although a moderate amount of water and oil repellent agent is used, the water and oil repellency after washing decreases significantly, which does not meet the standard requirements. This may be due to the type or amount of crosslinking agent being insufficient, resulting in poor durability of three-proofing performance after washing.

[0197] Poor performance of oil repellency before washing: The oil repellency before washing is only grade 3, barely passing, which also affects the overall three-proofing performance.

[0198] Slight decrease in easy soil release: The easy soil release after washing decreases slightly, but is still within an acceptable range.

[0199] Soft hand feel and mechanical properties: Soft hand feel and mechanical properties are good, but these advantages cannot completely make up for the deficiency in three-proofing performance.

[0200] The terms “first”, “second” are only for descriptive purposes and are used to distinguish objects such as substances from each other, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. For example, without departing from the scope of the embodiments of the present application, the first XX can also be referred to as the second XX, and similarly, the second XX can also be referred to as the first XX. Therefore, the features defined with “first”, “second” can explicitly or implicitly include one or more of the features.

[0201] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing a lightweight, all-cotton, three-proof fabric, characterized in that, Includes the following steps: S1. Long-staple cotton is selected as raw material, and high-count cotton yarn of 80-100S / 1 is prepared by compact spinning process. In step S1, the compact spinning process includes the following steps: Open-process cotton: The raw cotton fibers selected are Xinjiang long-staple cotton with a fiber length of 33mm or more; Carding: The cotton lap after opening and cleaning is further carded using a carding machine. The cylinder speed is set to 330-350 r / min, the doffer speed to 6.2-6.4 r / min, the licker-in speed to 810-830 r / min, the cylinder flats spacing to 0.25 mm / 0.3 mm / 0.2 mm / 0.25 mm / 0.3 mm, and the cylinder doffer spacing to 0.13 mm. The final actual dry weight of the sliver is 12.5 g. Drawing: The sliver obtained after carding is drawn using a two-stage drawing process. The total draft ratio is set to 6.2, the drawing machine output speed is 16-20 m / min, the first sliver exit speed is 220 m / min, and the last sliver exit speed is 200 m / min. Roving: Set the front roller speed to 4.22-4.69 m / min and the spindle speed to 480 r / min; Fine yarn: Set small roller spacing to 18x34mm, roller speed to 190rpm, and back zone draft ratio to 1.4; Winding: Set the winding speed to 1200 m / min and the winding tension to 8.0 cN; S2. The high-count cotton yarn is processed into fabric through weaving, and the fabric is pretreated; the pretreatment includes singeing, cold desizing and mercerizing. In step S2, the pretreatment process includes the following steps: Singeing: The process of one reverse and two forward singeing is adopted. The flame temperature is 1000-1100℃ and the machine speed is 110-120m / min, which makes the fabric surface smooth and the quality requirement is ≥4. Cold pile desizing: Use 50-70g / L soda ash, 15g / L hydrogen peroxide, 10g / L cold pile refining agent TF-125LA, and 1-2g / L penetrant NR. After standing at room temperature for 24 hours, wash with water to achieve a desizing rate of over 80%. Mercerizing: A light mercerizing process is adopted, with a caustic soda concentration of 20-24 g / L, a machine speed of 60-70 m / min, a temperature control of 15-25℃, and a roll residue rate of 65%-75%; S3. Dye the pretreated fabric, wash it after dyeing, and adjust the pH value of the fabric to between 4 and 5. S4. Apply a three-proof auxiliary agent to the dyed and washed fabric and perform a shaping treatment; In step S4, the three-proof additive comprises the following raw materials in the following amounts: Waterproof and oil-repellent agent PHOBOL NB-NH 40-50g / L Crosslinking agent PHOBOL EXT. SFB 25-35g / L Softener Megasoft CEC-01 6-12g / L; S5. Perform pre-shrinking treatment on the shaped fabric to control the shrinkage rate of the fabric to within 3%; to obtain the lightweight, all-cotton, three-proof fabric.

2. The preparation method according to claim 1, characterized in that, In step S1, the high-count cotton yarn has the following characteristics: average yarn strength of 270~290 cN / Tex, yarn evenness CV of 11~14%, -50% fineness of (3±1) knots / km, +50% thickness of (55±10) knots / km, +200% neps of (20±5) knots / km, yarn hairiness index H of 2.0~5.0, and yarn twist of 1300-1600 twists / meter.

3. The preparation method according to claim 1, characterized in that, In step S2, the high-count cotton yarn is processed into fabric through weaving and sizing processes; The sizing process involves the following steps: starch 80-90 kg / m³, PVA 30-45 kg / m³, solids content 11%, sizing ink printing length 35-40 m, moisture regain 4.6-5.8%, sizing tank temperature ≥90℃, viscosity 9-10 s, sizing machine speed 4.1 m / min, cylinder tension 27±1 kN, warp beam tension 13±2 kN, and sizing rate controlled at 16-18.5%.

4. The preparation method according to claim 1, characterized in that, In step S3, the dyeing process includes the following steps: The mercerized fabric is dyed with reactive dyes on a continuous pad dyeing machine. The process flow is as follows: pad dyeing liquor → hot air pre-drying → drying in drying cylinder → stacking → padding with salt and alkali solution → steam fixing → cold water washing → hot water washing → soap washing → weak acid water washing. After dyeing, the fabric is thoroughly washed, and a continuous or jet washing machine is used to wash the fabric multiple times.

5. The preparation method according to claim 1, characterized in that, In step S4, the baking temperature is 170°C and the time is 1 minute during the shaping process.

6. A lightweight, all-cotton, three-proof fabric, characterized in that, The fabric is prepared by the preparation method according to any one of claims 1-5.

Images