Environment-friendly preparation method of environment-friendly fleece fabric

Abstract

The invention provides an environment-friendly preparation method of an environment-friendly fleece fabric, and relates to the technical field of fabric processing.The method comprises the following steps that firstly, a fabric substrate is woven and formed, and fiber A and fiber B are selected as the fabric substrate; the fiber A and the fiber B are mixed and processed according to the blending technology to form blended yarn, the blended yarn is subjected to spooling treatment through a spooling machine, and meanwhile the yarn is subjected to waxing treatment through a waxing device of the spooling machine; weaving a fabric substrate by adopting a double-sided warp knitting process; wool scales on a fabric substrate are removed through natural bio-enzyme, the fabric prepared through warp yarn blending is subjected to natural bio-enzyme treatment and steam setting in sequence, the fabric is modified and optimized through the natural bio-enzyme, the use amount of a traditional chemical treatment agent is greatly reduced, and the fabric has the advantages of being environmentally friendly and free of pollution. The environment-friendly property of the whole preparation process is greatly improved, and the problems that a common fluff fabric is poor in hand feeling and skin-friendly property, and the environment-friendly property is poor due to the fact that skin-friendly and fluff-forming auxiliaries are added are solved.

Description

Technical Field

[0001] The invention relates to the technical field of fabric processing, and in particular to a green preparation method of an environmentally friendly fleece fabric for sweatshirts. Background Art

[0002] Sweater fabric is a common fabric among knitted fabrics, which is soft and comfortable. The common fabric structure of the fabric is that the warp adopts a rib structure and the weft adopts a defective structure. After weaving, it is necessary to add a suede layer on at least one side of the fabric to form a sweater fabric. In the prior art, the hand feel of common velvet fabrics is poor, which affects the subsequent skin-friendly performance of the fabric. Some fabrics are woven with animal fibers such as wool fibers, but the common problem of weaving with a single animal fiber is high cost; in order to obtain excellent softness and water absorption performance, some clothing fabrics will also add skin-friendly additives and velvet-forming additives, but these skin-friendly additives and velvet-forming additives have certain environmental protection performance. Under the premise of increasingly stringent requirements on fabric quality, it is necessary to use environmentally friendly additives to process the fabric, but the effect is relatively general. In addition, in the prior art, the softness and water absorption performance of the fabric will be further improved by changing the fiber structure, but the yarns of these fiber structures often use chlorination and other processes in the preparation process, which makes the fabric have certain carcinogenicity. Summary of the invention

[0003] The invention relates to a green preparation method for an environment-friendly fleece fabric for sweatshirts, which solves the problems that common fleece fabrics have poor hand feel and poor skin affinity, high cost of weaving with only animal fibers, poor environmental protection due to the addition of skin-friendly and fleece-forming auxiliaries, and carcinogenic potential of the fabrics due to the chlorination process in yarn preparation.

[0004] The present invention provides a green preparation method of an environmentally friendly fleece fabric for sweatshirts, comprising the following steps: Step 1. Fabric base textile forming: 1. The fabric base is made of fiber A and fiber B; 2. Fiber A and fiber B are mixed and processed according to the blending process to form a blended yarn, and the blended yarn is wound on a winding machine, and the yarn is waxed by a waxing device of the winding machine; 3. The fabric base is woven using double-sided warp knitting technology; Step 2. Enzyme treatment: 1. Use natural biological enzymes to remove wool scales on the fabric base, and the natural biological enzymes use proteases; 2. The protease treatment comprises the following steps: (1) Preparation of enzyme treatment solution: Mix natural protease with water, and add sodium carbonate to adjust the pH value to 7.5-9 to obtain enzyme treatment solution for use; (2) Dipping and padding the fabric substrate with the enzyme treatment solution at a mass ratio of 1:30-50; Step 3. Steaming: The impregnated fabric base is steamed at a temperature of 90-100°C for 2 hours, and then dried and shaped at a temperature of 80-100°C to obtain a sweater fleece fabric; Furthermore, in step 1, the fiber A is wool fiber, and the fiber B is long-staple cotton fiber.

[0005] Furthermore, in the blended yarn described in step 1, the wool fiber accounts for 30%-40% of the total mass of the blended yarn; the count of the blended yarn is at least 18.5 tex, and the length of the wool fiber is not less than 35 mm.

[0006] Furthermore, the protease in step 2 is an active enzyme extracted from Aspergillus oryzae or Malva sylvestris, including papain.

[0007] Furthermore, the enzyme treatment solution in step 2 also contains siloxane and ethanol, wherein the enzyme content is 0.3%, the siloxane content is 0.5%, and the ethanol content is 5% by mass.

[0008] The present invention provides a green preparation method of an environmentally friendly fleece fabric for sweatshirts, which has the following beneficial effects: The present invention sequentially treats the fabric prepared by warp yarn blending with natural biological enzymes and steam setting, thereby improving the flexibility and fluffiness of the fabric, and by controlling the length of the wool fiber, combining the weaving process of the fabric and the enzyme treatment process, the wool fiber content is increased under the premise of minimizing damage to the fiber. In the enzyme treatment process, the present application uses natural biological enzymes, that is, natural proteases, to treat the fabric with enzymes, and deeply treats the fabric with proteases, thereby partially removing the scale layer on the surface of the wool fiber, thereby improving the bonding strength between the fibers and giving the yarn good fluffiness, so that the cellulose molecules are tightly bonded, thereby giving the fabric good resilience and softness. The present invention uses natural biological enzymes to modify and optimize the fabric, greatly reducing the use of traditional chemical treatment agents, effectively reducing chemical residues, and greatly improving the environmental protection of the entire preparation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0010] The drawings in the following description are merely related to embodiments of the present invention, rather than limiting the present invention.

[0011] In the attached picture: Figure 1 A flow chart of the sweatshirt fleece fabric preparation process of the present application is shown. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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.

[0013] Example: Please refer to Figure 1 : The present invention proposes a green preparation method of an environmentally friendly fleece fabric for sweatshirts, comprising the following steps: Step 1. Fabric base textile forming: The fabric base is made of fiber A and fiber B, where fiber A is wool fiber and fiber B is long-staple cotton fiber. Wool fiber is used because of its unique elasticity, warmth retention and soft feel. Its curled structure can store a large amount of air, thereby effectively blocking heat loss and providing good warmth retention for the fabric. Long-staple cotton fiber is used because it is known for its slender and tough characteristics. The long fiber length allows the yarns to better fit each other during the weaving process, improving the yarn strength. At the same time, its natural skin-friendliness and hygroscopicity can enhance the comfort of the fabric.

[0014] Fiber A and fiber B are mixed and processed according to the blending process to form blended yarn. In the blending process, advanced cotton opening and cleaning equipment is used to loosen and remove impurities on wool fibers and long-staple cotton fibers respectively, so that the fibers are in a loose and clean state for subsequent uniform mixing. Then, a high-precision cotton blending machine is used to fully mix the two fibers in a specific proportion. The wool fiber in the blended yarn accounts for 30%-40% of the total mass of the blended yarn. This ratio range has been determined through multiple experimental optimizations, which can not only ensure that the fabric has sufficient warmth retention performance, but also effectively control costs and reduce the pilling phenomenon caused by wool. The count of the blended yarn is at least 18.5tex. A higher count can make the yarn more delicate, which helps to weave a delicate and compact fabric structure. The length of the wool fiber is not less than 35mm. The long wool fibers are tightly entangled with each other during spinning, which can improve the overall strength and stability of the yarn.

[0015] The blended yarn is wound on a winding machine. The winding machine uses an automatic tension control system, which can accurately adjust the yarn tension so that the yarn maintains uniform tension during the winding process, avoiding problems such as yarn breakage or loose winding due to uneven tension. At the same time, the yarn is waxed using the waxing device of the winding machine. The wax selected is an environmentally friendly textile wax. Its melting point and viscosity have been screened to suit the characteristics of the yarn. The amount of waxing is controlled within a certain range, which can effectively reduce yarn surface friction, reduce the breakage rate in the subsequent weaving process, and improve production efficiency, without affecting the subsequent dyeing or other processing processes of the fabric due to excessive wax.

[0016] The fabric base is woven using double-sided warp knitting technology. The double-sided warp knitting machine uses a computer-controlled high-speed model, which can accurately set the knitting parameters. During the knitting process, the warp knitting structure is carefully designed according to the fabric design requirements. By adjusting the arrangement and movement of the yarns on different combs, the fabric forms a stable double-sided structure, with a delicate and smooth texture on the front side and good support and structural strength on the back side, thereby greatly improving the overall stability and durability of the fabric.

[0017] Step 2. Enzyme treatment: The wool scales on the fabric base are removed by using natural biological enzymes. The natural biological enzymes are proteases, which are active enzymes extracted from Aspergillus oryzae or Malva sibiricum, including papain. The proteases from Aspergillus oryzae and Malva sibiricum have high catalytic activity and specificity, and can accurately act on the specific protein structure in the wool scales to achieve a gentle and effective scale removal effect. Papain is known for its mildness and good biocompatibility. While decomposing the wool scales, it minimizes damage to the main structure of the wool fiber, thereby retaining the original strength and elasticity of the wool fiber, so that the treated fabric has good softness while retaining the excellent properties of wool.

[0018] Protease treatment includes the following steps: (1) Preparation of enzyme treatment solution: natural protease is mixed with water. During the mixing process, a low-speed stirring device is used to stir slowly to prevent excessive foam from being generated due to excessive stirring speed, which affects the activity of the enzyme. Sodium carbonate is added to adjust the pH value to 7.5-9. This pH range is the optimal activity range of the protease obtained through a large number of experimental verifications. Within this range, the protease can fully exert its catalytic effect and efficiently decompose wool scales. The enzyme treatment solution is obtained for use. Furthermore, the enzyme treatment solution also contains siloxane and ethanol, wherein the enzyme content is 0.3%, the siloxane content is 0.5%, and the ethanol content is 5% by mass. The addition of siloxane is mainly to improve the feel of the fabric. Its small molecular structure can form a smooth film on the surface of the fabric, reduce the friction coefficient of the fabric surface, and make the fabric feel softer and smoother. Ethanol, as a good solvent and dispersant, helps the protease to be evenly dispersed in the solution, ensuring the uniformity of the enzyme treatment process. At the same time, ethanol has a certain volatility and can evaporate quickly during the subsequent steaming process, and will not remain in the fabric to affect the quality of the fabric.

[0019] (2) The fabric substrate and the enzyme treatment solution are impregnated and rolled at a mass ratio of 1:30-50. The impregnation process uses a continuous impregnation device to ensure that the fabric substrate can fully and evenly absorb the enzyme treatment solution. Before impregnation, the fabric substrate is pre-wetted to make it wet, which is more conducive to the absorption and penetration of the enzyme treatment solution. During impregnation, the roller pressure is strictly controlled. Excessive pressure may cause the enzyme treatment solution to be over-extruded, affecting the treatment effect; too low pressure may cause the fabric to absorb too much enzyme treatment solution, resulting in waste and uneven treatment.

[0020] Step 3. Steaming: The impregnated fabric base is steamed. The steaming equipment uses a professional steamer with high steam uniformity and precise temperature control. The steaming temperature is 90-100℃. Within this temperature range, the enzyme catalytic reaction can proceed continuously and stably, and at the same time, the enzyme will not be inactivated or the fabric will be thermally damaged due to excessive temperature. The time is 2h. This time length is determined by experiments and can ensure the full removal of wool scales and the stability of the fabric structure. During the steaming process, the steam pressure in the steamer is kept stable to ensure that the steam can fully penetrate into every corner of the fabric so that the enzyme treatment effect is uniform.

[0021] Then, the fabric is dried and shaped. The drying and shaping equipment uses a dryer with a hot air circulation system and automatic temperature and humidity adjustment functions. The shaping temperature is 80-100℃. Within this temperature range, the fabric can gradually lose moisture and form a stable morphological structure. At the same time, the residual enzyme is inactivated to prevent it from continuing to affect the quality of the fabric. During the drying process, the hot air temperature and circulation speed are adjusted in real time according to the moisture content and shrinkage rate of the fabric to ensure that the fabric after drying is stable in size and feels good, and the sweater fleece fabric is obtained.

[0022] The above are only specific implementation methods of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be covered by the protection scope of the present disclosure.

Claims

1. A green preparation method for environmentally friendly fleece fabric for sweatshirts, characterized in that: The following steps are involved: Step 1. Fabric base textile forming:

1. The fabric base is made of fiber A and fiber B; 2. Fiber A and fiber B are mixed and processed according to the blending process to form a blended yarn, and the blended yarn is wound on a winding machine, and the yarn is waxed by a waxing device of the winding machine; 3. The fabric base is woven using double-sided warp knitting technology; Step 2. Enzyme treatment:

1. Use natural biological enzymes to remove wool scales on the fabric base, and the natural biological enzymes use proteases; 2. Protease Treatment The following steps are involved: (1) Preparation of enzyme treatment solution: Mix natural protease with water, and add sodium carbonate to adjust the pH value to 7.5-9 to obtain enzyme treatment solution for use; (2) Dipping and padding the fabric substrate with the enzyme treatment solution at a mass ratio of 1:30-50; Step 3. Steaming: The impregnated fabric base is steamed at a temperature of 90-100°C for 2 hours, and then dried and shaped at a temperature of 80-100°C to obtain the sweater fleece fabric.

2. The green preparation method of an environmentally friendly fleece fabric for sweatshirts according to claim 1, characterized in that: In step 1, the fiber A is wool fiber, and the fiber B is long-staple cotton fiber.

3. The green preparation method of an environmentally friendly fleece fabric for sweatshirts according to claim 2, characterized in that: In step 1, the wool fibers in the blended yarn account for 30%-40% of the total mass of the blended yarn; the count of the blended yarn is at least 18.5 tex, and the length of the wool fibers is not less than 35 mm.

4. The green preparation method of an environmentally friendly fleece fabric for sweatshirts according to claim 1, characterized in that: The protease described in step 2 is an active enzyme extracted from Aspergillus oryzae or Malva sylvestris, including papain.

5. The green preparation method of an environmentally friendly fleece fabric for sweatshirts according to claim 1, characterized in that: The enzyme treatment solution in step 2 also contains siloxane and ethanol, wherein the enzyme content is 0.3%, the siloxane content is 0.5%, and the ethanol content is 5% by mass.

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