Shrink-proof finishing technology for wool fibers

Abstract

The invention provides a wool fiber shrink-proof finishing technology, and relates to the technical field of wool fabric dyeing and finishing. The wool fiber shrink-proof finishing technology comprises the following steps: cleaning: pretreating wool fibers by using a mild surfactant to remove surface impurities; enzyme treatment: treating the wool fibers with cellulase to weaken scale layers on the surfaces of the fibers; according to the application of the anti-shrinking agent, an environment-friendly anti-shrinking agent is applied, and the anti-shrinking agent comprises a silane coupling agent and a water-soluble polymer in a specific proportion; curing treatment: carrying out curing treatment on the wool fibers at a specific temperature under a specific temperature condition so as to ensure the combination effect of the shrink-proof agent and cellulase; and post-treatment: washing with an aqueous solution with a neutral pH value to remove redundant chemical substances, and drying. Through enzyme treatment and application of the shrink-proof agent, scale layers on the surfaces of wool fibers are effectively weakened, stable chemical bonding is formed, and the shrinkage and felting phenomena of wool in the washing process are remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wool fabric dyeing and finishing, in particular to a wool fiber shrinkage-proof finishing technology. Background Art

[0002] Wool fiber is widely used in the field of clothing and textiles due to its unique warmth retention, breathability and elasticity. The structure of wool fiber is composed of spiral keratin, which gives it beneficial elasticity and toughness. There are tiny scales on the surface of wool fiber, which can effectively absorb moisture and perspiration to keep the body dry. It also has natural antibacterial and anti-odor properties, which makes wool products provide good comfort in various climatic conditions and are skin-friendly. In addition, wool has good thermal regulation function and can keep warm in cold weather. It is breathable in warm weather and helps regulate body temperature. These characteristics make wool an ideal material for making various products such as high-performance clothing, bedding and carpets. With the advancement of science and technology, the handling and processing technology of wool fibers has been continuously improved, such as the use of low-temperature washing and special shrinkage-proof treatment, which further improves its durability and comfort. In the modern textile industry, wool is still an important high-end fiber material.

[0003] However, wool fibers are prone to shrinkage and felting during the washing process, which not only affects the dimensional stability and appearance of the clothing, but also limits the use and maintenance of wool products. To solve this problem, traditional wool shrinkage-proofing methods usually use chlorination treatment, which destroys the scale layer on the wool surface through chemical reactions to reduce the mutual adhesion between fibers. However, chlorination treatment has significant disadvantages, including pollution to the environment, potential harm to the health of operators, and damage to wool fibers, resulting in decreased fiber strength and worse hand feel. Therefore, technicians in this field provide a wool fiber shrinkage-proof finishing technology to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a wool fiber shrinkage-proof finishing technology, which solves the problems of environmental pollution, potential harm to the health of operators and damage to wool fibers, resulting in reduced fiber strength and poor hand feel in the prior art solutions.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A wool fiber shrinkage-resistant finishing technology, comprising:

[0008] Cleaning: Use mild surfactants to pre-treat wool fibers to remove surface impurities;

[0009] Enzyme treatment, using specific cellulase enzymes to treat wool fibers to weaken the scale layer on the fiber surface;

[0010] Application of an anti-shrinkage agent, which is an environmentally friendly anti-shrinkage agent comprising a silane coupling agent and a water-soluble polymer in a specific ratio;

[0011] Curing treatment, curing wool fibers under specific temperature and temperature conditions to ensure the combination of shrinkage-resistant agents and cellulase;

[0012] Post-treatment, rinse with a neutral pH aqueous solution to remove excess chemicals and dry.

[0013] Preferably, the cleaning comprises the following steps:

[0014] S1. Pretreatment, preliminarily remove loose impurities and some grease on the wool fiber, put the wool fiber into a solution containing a mild surfactant, gently stir to avoid fiber damage, use temperature 20 degrees Celsius - 25 degrees Celsius, surfactant concentration 0.5% - 1%, fabric weight to water weight ratio of 1:30;

[0015] S2. Mechanical cleaning: further remove impurities on the fibers through mechanical action. Use a low-speed rotating washing machine or manual stirring to ensure that the fibers are fully exposed to the cleaning liquid. The soaking and stirring time is generally 30 minutes to ensure that the cleaning agent can fully act on the wool fibers.

[0016] S3. Rinse to remove residual surfactants and other impurities on the wool fibers. Rinse with clean water several times until the water flowing out is clear and foam-free. This can be done at room temperature. After each rinse, the water in the container should be completely emptied and replaced with clean water.

[0017] S4. Dehydration, remove excess water from wool fibers to facilitate subsequent processing, using a centrifugal dehydrator or manual squeezing to remove excess water;

[0018] S5. Drying: restore the wool fiber to a suitable temperature state to prepare for the next enzyme treatment. Dry it naturally in a well-ventilated environment or use a low-temperature dryer.

[0019] Preferably, the enzyme treatment comprises the following steps:

[0020] S1. Preparation of enzyme solution: select a cellulase preparation specific to wool scale layer to ensure that it has a good effect on wool fiber, dissolve an appropriate amount of enzyme preparation in a buffer solution with a pH value of 5-6, and the enzyme concentration range is 0.5%-1%;

[0021] S2. Adjustment of temperature and pH value: adjust the solution temperature to 40-45 degrees Celsius to activate the activity of the enzyme and improve the treatment efficiency, and ensure that the pH value of the solution remains within the optimal action range of the enzyme preparation;

[0022] S3. Impregnation of wool fibers: completely immerse the wool fibers after the washing step in the prepared enzyme solution, and keep the wool fibers in the enzyme solution for 1-2 hours under gentle stirring to ensure that the enzyme is in full contact with the wool fibers;

[0023] S4. Monitoring and adjustment: Regularly check the pH and temperature of the solution during the treatment process to ensure that the enzyme activity remains at the optimal state;

[0024] S5. Stop the enzyme activity. After the treatment is completed, stop the enzyme activity immediately to prevent excessive decomposition of wool fibers;

[0025] S6. Cleaning and preparation for the next step: rinse the wool fiber thoroughly with clean water to remove the residual enzyme solution, confirm that there is no enzyme solution residue on the surface of the wool fiber, and check the fiber condition to prepare for the next step of shrinkage-proofing agent application.

[0026] Preferably, the shrink-proofing agent application comprises the following steps:

[0027] S1. Preparation of shrinkage-proof agent, using silane coupling agent and water-soluble polymer, fully dissolved in water in a ratio of 2%-3% of silane coupling agent and 3%-5% of water-soluble polymer;

[0028] S2. Mixing the solution to ensure that the silane coupling agent and the water-soluble polymer are fully mixed to form a uniform shrinkage-resistant agent solution, and adjusting the pH value of the solution to neutral to optimize the stability and effect of the shrinkage-resistant agent;

[0029] S3. Impregnation of wool fibers: completely immerse the enzyme-treated wool fibers in the prepared shrinkage-resistant agent solution for 30 minutes to 1 hour at room temperature to ensure that the shrinkage-resistant agent is evenly penetrated into the wool fibers;

[0030] S4. To promote penetration, stirring or shaking the soaked water can play a good auxiliary role;

[0031] S5. Curing treatment: After the impregnation is completed, the wool fiber is gently squeezed to remove the excess shrinkage-resistant agent solution, and the wool fiber is dried at 80-100 degrees Celsius to promote the formation of a stable chemical bond between the shrinkage-resistant agent and the wool fiber;

[0032] S6. Post-treatment: rinse the wool fibers thoroughly with clean water to remove residual shrinkage-resistant agent, and then dry them naturally.

[0033] Preferably, the curing process comprises the following steps:

[0034] S1. During the preparation stage, ensure that the wool fibers are fully dried after the shrink-proofing agent is applied, with no obvious wet marks, and prepare an oven or hot air treatment agent to ensure uniform temperature distribution;

[0035] S2. The heat treatment conditions are set. According to the characteristics of the shrink-proof agent, the heat treatment temperature is set between 80-100 degrees Celsius and the treatment time is 30-60 minutes;

[0036] S3. During the heat treatment process, the wool fibers treated with the shrink-proof agent are evenly placed in the heat treatment equipment to avoid fiber overlap or accumulation to ensure uniform heat transfer;

[0037] S4. Cooling and taking out: After the heat treatment is completed, the wool fiber is allowed to slowly cool to room temperature in the oven to avoid shrinkage or deformation of the fiber due to rapid cooling;

[0038] S5. Inspection and evaluation: Check the appearance of the wool fibers to confirm that there are no abnormal changes.

[0039] Preferably, the post-processing comprises the following steps:

[0040] S1. Cleaning step: rinse with clean water several times until the water flowing out is clear and there is no obvious residue;

[0041] S2. Neutralization treatment, using a buffer solution with a pH value of 7 to briefly soak the wool fiber and then rinse it;

[0042] S3. Drying step, carried out in a well-ventilated environment, avoiding direct sunlight;

[0043] S4. Inspection and finishing: check the appearance of the wool fiber to confirm that there is no abnormal change, evaluate the feel of the wool fiber by touch, and ensure that the fiber maintains good softness and elasticity after treatment.

[0044] (III) Beneficial effects

[0045] The present invention provides a wool fiber shrinkage-proof finishing technology, which has the following beneficial effects:

[0046] 1. In the present invention, by avoiding the use of harmful chemicals such as chlorination treatment, environmental pollution and potential risks to the health of operators are reduced. By using enzyme treatment and shrinkage-proofing agents, the scale layer on the surface of the wool fiber is effectively weakened and a stable chemical bond is formed, which significantly reduces the shrinkage and felting of the wool during the washing process and improves the dimensional stability of the clothing.

[0047] 2. In the present invention, the shrinkage treatment increases the durability of wool fibers, reduces fiber damage and wear caused by washing, and extends the service life of wool products. Appropriate treatment can improve the feel of wool fibers, making them softer and smoother, while maintaining or enhancing their natural appearance and luster. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall system flow of the present invention;

[0049] Figure 2 It is a schematic diagram of the cleaning process in the present invention;

[0050] Figure 3 It is a schematic diagram of the process of enzyme treatment in the present invention;

[0051] Figure 4 It is a schematic diagram of the process of applying the shrinkage-proofing agent in the present invention;

[0052] Figure 5 It is a schematic diagram of the process of curing treatment in the present invention. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Embodiment 1:

[0055] like Figure 1-5 As shown, an embodiment of the present invention provides a wool fiber shrinkage-resistant finishing technology, comprising:

[0056] Cleaning: Use mild surfactants to pre-treat wool fibers to remove surface impurities;

[0057] Enzyme treatment, using specific cellulase enzymes to treat wool fibers to weaken the scale layer on the fiber surface;

[0058] Application of an anti-shrinkage agent, which is an environmentally friendly anti-shrinkage agent comprising a silane coupling agent and a water-soluble polymer in a specific ratio;

[0059] Curing treatment, curing wool fibers under specific temperature and temperature conditions to ensure the combination of shrinkage-resistant agents and cellulase;

[0060] Post-treatment, rinse with a neutral pH aqueous solution to remove excess chemicals and dry.

[0061] Cleaning includes the following steps:

[0062] S1. Pretreatment, preliminarily remove loose impurities and some grease on the wool fiber, put the wool fiber into a solution containing a mild surfactant, gently stir to avoid fiber damage, use temperature 20 degrees Celsius - 25 degrees Celsius, surfactant concentration 0.5% - 1%, fabric weight to water weight ratio of 1:30;

[0063] S2. Mechanical cleaning: further remove impurities on the fibers through mechanical action. Use a low-speed rotating washing machine or manual stirring to ensure that the fibers are fully exposed to the cleaning liquid. The soaking and stirring time is generally 30 minutes to ensure that the cleaning agent can fully act on the wool fibers.

[0064] S3. Rinse to remove residual surfactants and other impurities on the wool fibers. Rinse with clean water several times until the water flowing out is clear and foam-free. This can be done at room temperature. After each rinse, the water in the container should be completely emptied and replaced with clean water.

[0065] S4. Dehydration, remove excess water from wool fibers to facilitate subsequent processing, using a centrifugal dehydrator or manual squeezing to remove excess water;

[0066] S5. Drying: restore the wool fiber to a suitable temperature state to prepare for the next enzyme treatment. Dry it naturally in a well-ventilated environment or use a low-temperature dryer.

[0067] The enzyme treatment includes the following steps:

[0068] S1. Preparation of enzyme solution: select a cellulase preparation specific to wool scale layer to ensure that it has a good effect on wool fiber, dissolve an appropriate amount of enzyme preparation in a buffer solution with a pH value of 5-6, and the enzyme concentration range is 0.5%-1%;

[0069] S2. Adjustment of temperature and pH value: adjust the solution temperature to 40-45 degrees Celsius to activate the activity of the enzyme and improve the treatment efficiency, and ensure that the pH value of the solution remains within the optimal action range of the enzyme preparation;

[0070] S3. Impregnation of wool fibers: completely immerse the wool fibers after the washing step in the prepared enzyme solution, and keep the wool fibers in the enzyme solution for 1-2 hours under gentle stirring to ensure that the enzyme is in full contact with the wool fibers;

[0071] S4. Monitoring and adjustment: Regularly check the pH and temperature of the solution during the treatment process to ensure that the enzyme activity remains at the optimal state;

[0072] S5. Stop the enzyme activity. After the treatment is completed, stop the enzyme activity immediately to prevent excessive decomposition of wool fibers;

[0073] S6. Cleaning and preparation for the next step: rinse the wool fiber thoroughly with clean water to remove the residual enzyme solution, confirm that there is no enzyme solution residue on the surface of the wool fiber, and check the fiber condition to prepare for the next step of shrinkage-proofing agent application.

[0074] The application of shrink-proofing agent includes the following steps:

[0075] S1. Preparation of shrinkage-proof agent, using silane coupling agent and water-soluble polymer, fully dissolved in water in a ratio of 2%-3% of silane coupling agent and 3%-5% of water-soluble polymer;

[0076] S2. Mixing the solution to ensure that the silane coupling agent and the water-soluble polymer are fully mixed to form a uniform shrinkage-resistant agent solution, and adjusting the pH value of the solution to neutral to optimize the stability and effect of the shrinkage-resistant agent;

[0077] S3. Impregnation of wool fibers: completely immerse the enzyme-treated wool fibers in the prepared shrinkage-resistant agent solution for 30 minutes to 1 hour at room temperature to ensure that the shrinkage-resistant agent is evenly penetrated into the wool fibers;

[0078] S4. To promote penetration, stirring or shaking the soaked water can play a good auxiliary role;

[0079] S5. Curing treatment: After the impregnation is completed, the wool fiber is gently squeezed to remove the excess shrinkage-resistant agent solution, and the wool fiber is dried at 80-100 degrees Celsius to promote the formation of a stable chemical bond between the shrinkage-resistant agent and the wool fiber;

[0080] S6. Post-treatment: rinse the wool fibers thoroughly with clean water to remove residual shrinkage-resistant agent, and then dry them naturally.

[0081] The curing process includes the following steps:

[0082] S1. During the preparation stage, ensure that the wool fibers are fully dried after the shrink-proofing agent is applied, with no obvious wet marks, and prepare an oven or hot air treatment agent to ensure uniform temperature distribution;

[0083] S2. The heat treatment conditions are set. According to the characteristics of the shrink-proof agent, the heat treatment temperature is set between 80-100 degrees Celsius and the treatment time is 30-60 minutes;

[0084] S3. During the heat treatment process, the wool fibers treated with the shrink-proof agent are evenly placed in the heat treatment equipment to avoid fiber overlap or accumulation to ensure uniform heat transfer;

[0085] S4. Cooling and taking out: After the heat treatment is completed, the wool fiber is allowed to slowly cool to room temperature in the oven to avoid shrinkage or deformation of the fiber due to rapid cooling;

[0086] S5. Inspection and evaluation: Check the appearance of the wool fibers to confirm that there are no abnormal changes.

[0087] Post-processing includes the following steps:

[0088] S1. Cleaning step: rinse with clean water several times until the water flowing out is clear and there is no obvious residue;

[0089] S2. Neutralization treatment, using a buffer solution with a pH value of 7 to briefly soak the wool fiber and then rinse it;

[0090] S3. Drying step, carried out in a well-ventilated environment, avoiding direct sunlight;

[0091] S4. Inspection and finishing: check the appearance of the wool fiber to confirm that there is no abnormal change, evaluate the feel of the wool fiber by touch, and ensure that the fiber maintains good softness and elasticity after treatment.

[0092] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wool fiber shrinkage-proof finishing technology, characterized in that: include: Cleaning: Use mild surfactants to pretreat wool fibers to remove surface impurities; Enzyme treatment, using specific cellulase enzymes to treat wool fibers to weaken the scale layer on the fiber surface; Application of an anti-shrinkage agent, which is an environmentally friendly anti-shrinkage agent comprising a silane coupling agent and a water-soluble polymer in a specific ratio; Curing treatment, curing wool fibers under specific temperature and temperature conditions to ensure the combination of shrinkage-resistant agents and cellulase; Post-treatment, rinse with a neutral pH aqueous solution to remove excess chemicals and dry.

2. The shrinkage-resistant finishing technology for wool fibers according to claim 1, characterized in that: The cleaning comprises the following steps: S1. Pretreatment, preliminarily remove loose impurities and some grease on the wool fiber, put the wool fiber into a solution containing a mild surfactant, gently stir to avoid fiber damage, use temperature 20 degrees Celsius - 25 degrees Celsius, surfactant concentration 0.5% - 1%, fabric weight to water weight ratio of 1:30; S2. Mechanical cleaning: further remove impurities on the fibers through mechanical action. Use a low-speed rotating washing machine or manual stirring to ensure that the fibers are fully exposed to the cleaning liquid. The soaking and stirring time is generally 30 minutes to ensure that the cleaning agent can fully act on the wool fibers. S3. Rinse to remove residual surfactants and other impurities on the wool fibers. Rinse with clean water several times until the water flowing out is clear and foam-free. This can be done at room temperature. After each rinse, the water in the container should be completely emptied and replaced with clean water. S4. Dehydration, remove excess water from wool fibers to facilitate subsequent processing, using a centrifugal dehydrator or manual squeezing to remove excess water; S5. Drying: restore the wool fiber to a suitable temperature state to prepare for the next enzyme treatment. Dry it naturally in a well-ventilated environment or use a low-temperature dryer.

3. The shrinkage-resistant finishing technology for wool fibers according to claim 1, characterized in that: The enzyme treatment comprises the following steps: S1. Preparation of enzyme solution: select a cellulase preparation specific to wool scale layer to ensure that it has a good effect on wool fiber, dissolve an appropriate amount of enzyme preparation in a buffer solution with a pH value of 5-6, and the enzyme concentration range is 0.5%-1%; S2. Adjustment of temperature and pH value: adjust the solution temperature to 40-45 degrees Celsius to activate the activity of the enzyme and improve the treatment efficiency, and ensure that the pH value of the solution remains within the optimal action range of the enzyme preparation; S3. Impregnation of wool fibers: completely immerse the wool fibers after the washing step in the prepared enzyme solution, and keep the wool fibers in the enzyme solution for 1-2 hours under gentle stirring to ensure that the enzyme is in full contact with the wool fibers; S4. Monitoring and adjustment: Regularly check the pH and temperature of the solution during the treatment process to ensure that the enzyme activity remains at the optimal state; S5. Stop the enzyme activity. After the treatment is completed, stop the enzyme activity immediately to prevent excessive decomposition of wool fibers; S6. Cleaning and preparation for the next step: rinse the wool fiber thoroughly with clean water to remove the residual enzyme solution, confirm that there is no enzyme solution residue on the surface of the wool fiber, and check the fiber condition to prepare for the next step of shrinkage-proofing agent application.

4. The shrinkage-resistant finishing technology for wool fibers according to claim 1, characterized in that: The shrink-proofing agent application comprises the following steps: S1. Preparation of shrinkage-proof agent, using silane coupling agent and water-soluble polymer, fully dissolved in water in a ratio of 2%-3% of silane coupling agent and 3%-5% of water-soluble polymer; S2. Mixing the solution to ensure that the silane coupling agent and the water-soluble polymer are fully mixed to form a uniform shrinkage-resistant agent solution, and adjusting the pH value of the solution to neutral to optimize the stability and effect of the shrinkage-resistant agent; S3. Impregnation of wool fibers: completely immerse the enzyme-treated wool fibers in the prepared shrinkage-resistant agent solution for 30 minutes to 1 hour at room temperature to ensure that the shrinkage-resistant agent is evenly penetrated into the wool fibers; S4. To promote penetration, stirring or shaking the soaked water can play a good auxiliary role; S5. Curing treatment: After the impregnation is completed, the wool fiber is gently squeezed to remove the excess shrinkage-resistant agent solution, and the wool fiber is dried at 80-100 degrees Celsius to promote the formation of a stable chemical bond between the shrinkage-resistant agent and the wool fiber; S6. Post-treatment: Rinse the wool fibers thoroughly with clean water to remove residual shrink-proofing agent, and then dry them naturally.

5. The shrinkage-resistant finishing technology for wool fibers according to claim 1, characterized in that: The curing process comprises the following steps: S1. During the preparation stage, ensure that the wool fibers are fully dried after the shrink-proofing agent is applied, with no obvious wet marks, and prepare an oven or hot air treatment agent to ensure uniform temperature distribution; S2. The heat treatment conditions are set. According to the characteristics of the shrink-proof agent, the heat treatment temperature is set between 80-100 degrees Celsius and the treatment time is 30-60 minutes; S3. During the heat treatment process, the wool fibers treated with the shrink-proof agent are evenly placed in the heat treatment equipment to avoid fiber overlap or accumulation to ensure uniform heat transfer; S4. Cooling and taking out: After the heat treatment is completed, the wool fiber is allowed to slowly cool to room temperature in the oven to avoid shrinkage or deformation of the fiber due to rapid cooling; S5. Inspection and evaluation: Check the appearance of the wool fibers to confirm that there are no abnormal changes.

6. The shrinkage-resistant finishing technology for wool fibers according to claim 1, characterized in that: The post-processing comprises the following steps: S1. Cleaning step: rinse with clean water several times until the water flowing out is clear and there is no obvious residue; S2. Neutralization treatment, using a buffer solution with a pH value of 7 to briefly soak the wool fiber and then rinse it; S3. Drying step, carried out in a well-ventilated environment, avoiding direct sunlight; S4. Inspection and finishing: check the appearance of the wool fiber to confirm that there is no abnormal change, evaluate the feel of the wool fiber by touch, and ensure that the fiber maintains good softness and elasticity after treatment.

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