Machine washable silk or silk-containing fabric and process for its anti-dusting finishing

Abstract

The application discloses a machine-washable silk fabric and a grey damage prevention finishing process thereof. The fabric is obviously different from conventional silk fabric, and is not easy to fade and be damaged by grey. The application changes the condition that silk fiber is weak and difficult to be washed and protected at home. In the process of multiple machine washing and drying, the fabric can avoid being damaged by grey and being worn out, and the silk has durable gloss and soft and smooth hand feeling. The application provides a grey damage prevention treatment technology based on cold pad-batch for silk fabric, wherein the silk fabric is treated as follows: using a grey damage prevention agent solution and a penetrating agent to perform cold pad-batch treatment on the fabric, then performing alkali washing on the fabric, and finally performing setting and drying on the fabric after neutralization treatment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textiles, and particularly relates to a machine-washable real silk or silk-containing fabric and a process for preventing the fabric from being damaged by ash. BACKGROUND

[0002] Real silk and silk-containing fabrics have soft and comfortable hand feeling, light and smooth, good skin-friendliness and unique soft luster, and good moisture absorption, air permeability and anti-static properties. However, real silk is relatively fragile, and has the disadvantages of not being resistant to rubbing and being prone to pilling and wrinkling. Washing real silk fabrics with water leads to problems such as ash damage, dull color and stiff hand feeling. At present, high-end real silk fabrics are generally cleaned by dry cleaning. Even so, it is difficult to avoid damage and ash damage during dry cleaning. In addition, dry cleaning is relatively high in cost, and the dry cleaning agent is not environmentally friendly and has the risk of causing cancer.

[0003] Machine-washable real silk or silk-containing fabrics can change the problem of real silk being fragile, making real silk resistant to wear and tear, especially to wear and tear in the wet state during machine washing. After 20-50 washes and drying at home, the real silk fibers in the fabric will not fibrillate, and thus will not cause obvious ash damage. In addition, the treatment process improves the chemical bonding force between the dye and the fabric, and the fabric will not fade significantly after washing. Therefore, the present application provides a machine-washable real silk or silk-containing fabric and a production process thereof, which is an urgent problem to be solved in the current market.

[0004] At present, there are still few studies on preventing real silk fabrics from fibrillating and being damaged by ash and having a stiff hand feeling. In addition, the treatment of real silk often affects the excellent properties of the fabric, such as smooth hand feeling, bright luster and moisture absorption and retention. Researchers mostly improve the anti-wrinkle and anti-ash damage properties of real silk or silk-containing fabrics by adding a large amount of resin. After treatment, the hydrophilic property of the real silk fabric is significantly deteriorated, and the hand feeling is significantly hardened.

[0005] Regarding machine-washable real silk, Chinese Patent No. CN115247377A discloses a preparation process for machine-washable real silk fabric. The process first expands real silk fibers, then twists and winds them to obtain real silk yarn. The real silk yarn is immersed in a mixed solution of alkyl dimethyl betaine transition agent and weak alkali solution and subjected to ultrasonic treatment, and then dyed. In the dyeing vat, a sulfonate finishing agent is added at the target bath ratio, and the pH is adjusted to be acidic. After several cycles of dyeing of the real silk yarn, the yarn is washed and dried. The dyed real silk yarn is spun according to the predetermined fabric structure to obtain real silk fabric, which is then subjected to post-finishing treatment. The finished product is not pilled or gelled after 100 machine washes. However, the process needs to be treated in spinning, weaving, dyeing and post-finishing, and the process is relatively long. In addition, some researchers use blending or specific fabric structures to endow real silk or silk-containing fabrics with the ability to resist rubbing, which has a narrow application range.

[0006] The inventor's previous research on machine-washable real silk silk, Chinese patent with publication number CN115897233A, discloses a real silk fabric anti-gray damage treatment, which is treated by immersing the real silk fabric in an anti-gray damage agent treatment liquid, then performing alkali treatment, first keeping the temperature at 25-35℃, then raising the temperature to 60-90℃ for treatment, and then washing and setting the real silk fabric. The anti-gray damage process of the previous research does not appear gray damage after 10 machine washes, however, the real silk or silk-containing fabric prepared by the process has not achieved very excellent results in terms of wash resistance of anti-gray damage effect, on the other hand, it needs to react at high temperature to ensure that the anti-gray damage agent can fully react with silk fibroin, but under high temperature conditions, the fiber of the real fabric is lost, and the color of the fabric is greatly affected.

[0007] Therefore, there is a need for a treatment process with simple and efficient process flow, wide applicability, excellent anti-gray damage effect, and durable machine-washable real silk or silk-containing fabric. SUMMARY

[0008] In view of the deficiencies of the prior art, the purpose of the present application is to provide a real silk or silk-containing fabric treatment process with simple and efficient process flow, wide applicability, excellent anti-gray damage effect, and durable machine-washable real silk or silk-containing fabric, to improve the problems of fading, gray damage and stiff hand feeling of real silk or silk-containing fabric after machine washing.

[0009] To achieve the above-mentioned purpose, the present application provides an anti-gray damage finishing process for machine-washable real silk or silk-containing fabric, comprising the following steps:

[0010] Step one, immerse the semi-finished fabric of real silk or silk-containing fabric in anti-gray damage treatment liquid, and the pick-up rate is 80% to 100%;

[0011] Step two, the real silk or silk-containing fabric treated with the treatment liquid is wound and stacked on a winding frame for 6 to 24 hours, and the fabric reel on the winding frame is kept rotating at 5-30 m / min during the process.

[0012] Further, it further comprises step three, alkali washing the fabric treated in step two, wherein the alkali concentration is 5-15g / L, the fabric is treated at 30-50℃ for 5-15 minutes, and then the alkali is neutralized.

[0013] Further, the anti-gray damage treatment liquid comprises an anti-gray damage agent and an emulsified penetrating agent.

[0014] Further, the concentration of the anti-gray damage agent is 50-300g / L, and the concentration of the emulsified penetrating agent is 1-10g / L.

[0015] Further, the specific step of the neutralizing alkali agent in step three is to add 0.5-2 g / L of acid agent to treat the fabric for 3-5 minutes at room temperature.

[0016] Further, the anti-damage agent is aziridine, isocyanuric acid triglycidyl ester, trifunctional crosslinking agent, or tricyanuric chloride derivative.

[0017] Further, the emulsified penetrating agent is a negative nonionic emulsified penetrating agent.

[0018] Further, the emulsified penetrating agent is Kieralon XC-J of BASF or dispersant ZSP of Zhejiang Silk Institute Light Textile Branch.

[0019] Further, the temperature of the anti-damage treatment solution is kept at 5-30℃.

[0020] Further, the alkali agent is sodium bicarbonate or sodium carbonate.

[0021] Further, the specific step of the neutralizing alkali agent in step three is to add 0.5-2 g / L of acid agent to treat the fabric for 3-5 minutes at room temperature.

[0022] Further, after the neutralizing alkali agent in step three, the silk fabric or silk-containing fabric is subjected to setting and softening treatment.

[0023] Further, the silk fabric or silk-containing fabric is a silk fabric or silk-containing fabric in grey or semi-finished product after dyeing or semi-finished product after printing.

[0024] The application also provides a textile product, which comprises a machine-washable silk fabric or silk-containing fabric treated by any one of the above processes or is prepared from a machine-washable silk fabric or silk-containing fabric treated by any one of the above processes.

[0025] The application has the following advantages over the prior art:

[0026] 1. The anti-damage agent uniformly penetrates into the amorphous region and even the crystalline region of the silk fibers in the fabric during the cold piling process of the fabric on the winding frame, and reacts in the fiber interior. The rotation during the winding process can make the reaction more uniform. Through alkali treatment, the anti-damage agent will further react with the silk fibers under alkaline conditions, and achieve cross-linking between the molecules or inside the molecules, so that the space network of covalent bonds is formed between the microfibrils in the fibers. However, the chemical bond between the microfibrils in the fabric can withstand the wet friction during the machine washing and drying processes without damage, and has the functions of machine-washable anti-damage and anti-fading. After the finished fabric or garment treated by the process is washed and dried by the washing machine for 20-50 times, there is almost no damage and white mark on the surface, which greatly improves the machine washing resistance of the silk fabric or silk-containing fabric, and completely realizes the household machine washing and drying.

[0027] 2. After the process, the fabric of real silk and silk-containing fabric is soft, the original color and light and elegant texture of real silk fabric are not affected, the real silk fabric is still hydrophilic and comfortable, and through cold stacking treatment, the high temperature condition in the reaction process is reduced, the fiber loss and color change in the fabric treatment process are avoided, and after 20-50 machine washing and drying, the color and luster of the finished fabric or garment have no obvious change.

[0028] 3. Through cold stacking semi-continuous production, the production efficiency is higher, the labor efficiency ratio is greatly improved, in the case of inputting the same labor force, the continuous winding and stacking of the winding frame are realized, the energy saving is significant, and the cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 SEM image of real silk crepe satin prepared in Example 1 under 200 times after 20 times washing and drying;

[0030] Figure 2 SEM image of real silk crepe satin of Comparative Example 1 under 200 times after 20 times washing and drying. DETAILED DESCRIPTION

[0031] The application will be further described in detail below by combining examples and effect examples, but not limit the scope of the application.

[0032] The application discloses a machine-washable real silk or silk-containing fabric treated by a cold-rolling stacking anti-dust damage technology. The application will be further described in detail by examples, and the following examples are an explanation of the application, but the application is not limited to the following examples.

[0033] Example 1:

[0034] Fabric: real silk crepe satin, 70 g / m 2 , reactive black. The anti-dust damage treatment process includes the following steps:

[0035] ①. The real silk crepe satin is dried by setting and tentering machine after beam dyeing;

[0036] ②. The anti-dust damage treatment liquid is configured in the nip, the concentration of aziridine is 100 g / L, the concentration of XC-J is 3 g / L, and the temperature is kept at 20℃. The real silk crepe satin is impregnated with the above treatment liquid, and the rolling rate is 80%-100%;

[0037] ③. The real silk crepe satin impregnated with the treatment liquid is wound and stacked on the A-type frame for 24 hours, and the fabric reel on the A-type frame rotates uniformly during the process, and the rotating speed is 15 m / min;

[0038] IV. The cold-stacked pure silk crepe satin is subjected to alkali washing in a continuous washing machine. Sodium carbonate is added to the alkali washing tank of the continuous washing machine, and the concentration of the sodium carbonate is 15 g / L. The fabric is treated at 50°C for 5 minutes.

[0039] V. The alkali-washed pure silk crepe satin is subjected to neutralization in a continuous washing machine. Acetic acid is added to the neutralization tank of the washing machine, and the concentration of the acetic acid is 0.5 g / L. The fabric is treated at room temperature for 5 minutes. Then, the treated pure silk crepe satin is subjected to setting and softening treatment. Fatty acid softener is used for the setting and softening treatment. After padding at a dosage of 10 g / L, the fabric is dried in a setting machine.

[0040] Example 2

[0041] Fabric: Pure silk crepe, 68 g / m 2 , acid blue. The anti-damage treatment process includes the following steps:

[0042] I. The pure silk crepe is dried in a setting and tentering machine after beam dyeing.

[0043] II. An anti-damage treatment liquid is prepared in a padding trough. The anti-damage agent is isocyanuric acid triglycidyl ester, and the concentration of the isocyanuric acid triglycidyl ester is 150 g / L. XC-J is also added to the treatment liquid, and the concentration of the XC-J is 5 g / L. The temperature of the treatment liquid is maintained at 20°C. The pure silk crepe is padded with the treatment liquid, and the pick-up rate is 80% to 100%.

[0044] III. The pure silk crepe padded with the treatment liquid is wound on an A-type frame and stacked for 24 hours. During the stacking process, the fabric reel on the A-type frame is kept rotating at a speed of 15 m / min.

[0045] IV. The cold-stacked pure silk crepe is subjected to alkali washing in a continuous washing machine. Sodium bicarbonate is added to the alkali washing tank of the continuous washing machine, and the concentration of the alkali agent is 5 g / L. The fabric is treated at 30°C for 5 minutes.

[0046] V. The alkali-washed pure silk crepe is subjected to neutralization in a continuous washing machine. Acetic acid is added to the neutralization tank of the washing machine, and the concentration of the acetic acid is 0.5 g / L. The fabric is treated at room temperature for 5 minutes. Then, the treated pure silk crepe is subjected to setting and softening treatment. Fatty acid softener is used for the setting and softening treatment. After padding at a dosage of 5 g / L, the fabric is dried in a setting machine.

[0047] Example 3

[0048] Fabric: Silk-spandex jacquard satin, 48% pure silk, 52% spandex, 95 g / m 2 , reactive black.

[0049] I. The silk-spandex jacquard satin is dried in a setting and tentering machine after beam dyeing.

[0050] (ii) The silk stick jacquard satin is dipped in the treatment liquid and the concentration of the anti-dust agent aziridine is 50 g / L and the concentration of XC-J is 2 g / L, and the temperature is kept at 20°C, and the pick-up rate is 80% to 100%;

[0051] (iii) The silk stick jacquard satin after being dipped in the treatment liquid is rolled on the A-type frame for 24 hours, and the fabric reel on the A-type frame is kept rotating at a speed of 15 m / min;

[0052] (iv) The silk stick jacquard satin after cold piling is subjected to alkali washing in a continuous washing machine, and the concentration of the soda ash in the alkali washing tank of the washing machine is 15 g / L, and the silk stick jacquard satin is treated at 40°C for 5 minutes;

[0053] (v) The silk stick jacquard satin after alkali washing is subjected to neutralization in a continuous washing machine, and the concentration of the acetic acid in the neutralization tank of the washing machine is 2 g / L, and the silk stick jacquard satin is treated at room temperature for 5 minutes, and then the treated silk stick jacquard satin is subjected to setting treatment.

[0054] Example 4:

[0055] Different from Example 1, in step three, the silk plain crepe after being dipped in the treatment liquid is rolled on the A-type frame for 6 hours, and the fabric reel on the A-type frame is kept rotating at a speed of 15 m / min.

[0056] Comparative Example 1: Silk plain crepe, 70 g / m 2 , reactive black, without anti-dust treatment, beam dyeing, setting and softening.

[0057] Comparative Example 2: Silk twill, 68 g / m 2 , acid blue, without anti-dust treatment, beam dyeing, setting and softening.

[0058] Comparative Example 3: Silk stick jacquard satin, 48% silk and 52% viscose, 95 g / m 2 , reactive black, without anti-dust treatment, beam dyeing, setting and softening.

[0059] Comparative Example 4: Silk twill, 68 g / m 2 , acid blue, and the anti-dust treatment process includes the following steps:

[0060] (i) The silk twill after beam dyeing is dried and rolled on a setting and tentering machine;

[0061] (ii) The silk twill in step one is taken out of the dyeing machine, and an anti-dust agent trimer cyanamide chloride derivative is added into the dyeing tank, and the weight percentage of the anti-dust agent on the fabric is 15%, and the weight percentage of XC-J on the fabric is 1.5%, and the temperature is kept at 35°C, and the reaction is carried out for 20 minutes;

[0062] ③. In the jigger, add sodium bicarbonate, configure the concentration of sodium bicarbonate to be 5g / L, then raise the temperature to 85℃, treat the fabric under this condition for 20 minutes, drain;

[0063] ⑤. After the alkali washing, the fabric is washed and neutralized in the jigger, wherein the concentration of acetic acid in the jigger is 0.5g / L, the fabric is treated under normal temperature conditions for 5 minutes, drained, washed with flowing cold water, and then taken out of the cylinder, followed by setting and softening treatment of the fabric, wherein the concentration of fatty acid softener is 5g / L after padding, and the fabric is dried in a setting machine.

[0064] The difference between Example 2 and Comparative Example 1 is that the anti-gray damage agent in step 2 is a triazine chloride derivative, and the treatment method is a dyeing machine.

[0065] Comparative Example 5: pure silk crepe, 68g / m 2 , acid blue, the anti-gray damage treatment process includes the following steps:

[0066] ①. After the pure silk crepe is axially dyed, it is dried in a setting and tentering machine;

[0067] ②. In the nip, configure the anti-gray damage treatment liquid, wherein the concentration of isocyanuric acid triglycidyl ester is 150g / L, and the concentration of XC-J is 5g / L, and the temperature is kept at 20℃, the pure silk crepe is padded with the above treatment liquid, and the pick-up rate is 80% to 100%;

[0068] ③. The pure silk crepe padded with the treatment liquid is wound on an A-type frame and stacked for 24 hours, and the fabric reel on the A-type frame is kept rotating uniformly at a speed of 15m / min during the stacking;

[0069] ④. After cold stacking, the pure silk crepe is alkali washed in a continuous washing machine, sodium bicarbonate is added to the alkali washing tank of the continuous washing machine, the concentration of sodium bicarbonate is 5g / L, and the fabric is treated at 85℃ for 5 minutes;

[0070] ⑤. After the alkali washing, the pure silk crepe is neutralized in the continuous washing machine, wherein acetic acid is added to the neutralization tank of the washing machine, the concentration of acetic acid is 0.5g / L, and the fabric is treated at normal temperature for 5 minutes, followed by setting and softening treatment of the treated pure silk crepe, wherein the concentration of fatty acid softener is 5g / L after padding, and the fabric is dried in a setting machine.

[0071] The difference between Example 2 and Comparative Example 1 is that the alkali agent concentration in the alkali washing process in step 4 is 5g / L, and the fabric is treated at 85℃ for 5 minutes.

[0072] Table 1: Effect of fabric after machine washing

[0073]

[0074]

[0075] The washing method refers to the 4G method in GB / T8629-2017, the softness is the fabric style instrument test data, and the drop diffusion time test refers to GB / T21655.1

[0076] The data in Table 1 show that the silk fabric or silk-containing fabric treated by the cold pad-batch anti-dust damage technology of the application can not appear dust damage after multiple machine washing, greatly improving the machine washing resistance, and without fading after machine washing, while maintaining the softness of the silk fabric or silk-containing fabric, without hardening phenomenon. The drop diffusion time test shows that the cold pad-batch anti-dust damage technology of the application does not affect the hydrophilicity of the silk fabric or silk-containing fabric, and can maintain excellent moisture absorption performance.

[0077] Table 2 Effect of fabric treated by anti-dust damage

[0078] Colour difference before and after treatment Grammage before treatment Grammage after treatment Example 2 anti-grey sample 0.2 68 67 Comparative Example 4 anti-grey sample 1.5 68 62

[0079] The data in Table 2 show that treating acid silk in the dyeing vat will cause obvious color change, and the high-temperature treatment of the dyeing machine will cause the silk fabric to be more flat in style and the fiber to be damaged, so that the fabric product has a significantly lighter weight. Therefore, acid silk crepe fabric is more suitable for the cold pad-batch low-temperature treatment of the application.

[0080] Finally, it is necessary to point out that: the above examples are only used to further illustrate the technical solutions of the application, and cannot be understood as limiting the protection scope of the application. Some non-essential improvements and adjustments made by the person skilled in the art according to the above content of the application all belong to the protection scope of the application.

Claims

1. A process for anti-sooting finish of machine washable pure silk or silk containing fabric characterized in that: It comprises the following steps: Step one, dip the semi-finished silk or silk-containing fabric in the anti-dust damage treatment liquid, the pick-up rate being 80-100%; the temperature of the anti-dust damage treatment liquid being kept at 5-20℃; Step two, roll up the silk or silk-containing fabric treated with the treatment liquid on a roll frame and stack for 6-24 hours, during which the fabric roll on the roll frame is kept rotating at 5-30 m / min; It further comprises step three, alkali washing of the fabric treated in step two, wherein the alkali concentration is 5-15 g / L, the fabric is treated at 30-50℃ for 5-15 minutes, and then the alkali is neutralized.

2. A process for anti-sooting finishing of machine washable pure silk or silk containing fabric as claimed in claim 1 wherein: The anti-dust damage treatment liquid comprises an anti-dust agent and an emulsified penetrating agent.

3. A process for anti-sooting finishing of machine washable pure silk or silk containing fabric as claimed in claim 2, wherein: The concentration of the anti-dust agent is 50-300 g / L, and the concentration of the emulsified penetrating agent is 1-10 g / L.

4. A process for anti-sooting finishing of machine washable pure silk or silk containing fabric as claimed in claim 2, wherein: The anti-dust agent is aziridine, isocyanuric acid triglycidyl ester, or tricyanamide chloride derivative.

5. A process for anti-sooting finishing of machine washable pure silk or silk containing fabric as claimed in claim 2, wherein: The emulsified penetrating agent is a negative non-ionic emulsified penetrating agent.

6. A process for anti-sooting finishing of machine washable pure silk or silk containing fabric as claimed in claim 5 wherein: The emulsified penetrating agent is Kieralon XC-J from BASF.

7. A process for anti-sooting finishing of machine washable pure silk or silk containing fabric as claimed in claim 1, wherein said process is characterized by: The neutralization of the alkali in step three is carried out by adding 0.5-2 g / L of an acid agent, and the fabric is treated at room temperature for 3-5 minutes.

8. A textile, characterized in that, A machine-washable silk or silk-containing fabric treated by the process of any one of claims 1-7, or a garment, garment accessory, or bedding textile prepared from a machine-washable silk or silk-containing fabric treated by the process of any one of claims 1-7.

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