Modal and nylon interwoven fabric splitting process

Abstract

The invention relates to the technical field of modal and nylon interwoven fabric processing, and particularly discloses a modal and nylon interwoven fabric splitting process which comprises the following steps: S1, gray fabric weaving; s2, performing high-temperature pre-shaping; s3, splitting the fibers; s4, polishing and etching; s5, performing modal dyeing; s6, nylon dyeing; s7, softening in a machine; s8, carrying out circular drying; and S9, finished product shaping is conducted, in the splitting and polishing and wool etching steps, the speed of a main pump of an overflow machine table is set to be 1450 r / min, the opening degree of a nozzle is 5-10%, and the pressure of the nozzle is 0.35-0.5 bar. According to the modal and nylon interwoven fabric splitting process, the defect that the strength loss is greatly reduced when the splitting process is applied to an acid process in the market as a non-deep / alkaline process is overcome, and compared with a polyester material, the modal and nylon interwoven fabric is more wear-resistant and softer in hand feeling when being worn.

Description

Technical Field

[0001] The present invention relates to the technical field of modal and nylon interwoven fabric processing, specifically to the fibrillation process of modal and nylon interwoven fabrics. Background Art

[0002] Currently, the common problem in the alkaline fibrillation process of modal polyester is how to set the concentration of sodium hydroxide and the fibrillation temperature to ensure the presentation of the modal style without affecting the physical properties of the overall fabric (such as strength, gram weight). However, according to the existing test results, after the fibrillation conditions are weakened, the presentation effect of the modal velvet feeling is not achieved. Due to the physical properties of the modal itself, the actual fibrillation difficulty is much greater than that of tencel. Therefore, to achieve the required effect of the style, very severe alkaline conditions need to be processed. As is well known, polyester has relatively poor alkali resistance. When processed under the conditions for achieving the modal effect, the strength of polyester will decrease by more than 50%. This causes changes in the physical properties of polyester when making dark colors with modal polyester, such as loss of tissue elasticity, lighter gram weight, and even a significant decrease in the snagging performance, resulting in difficulty in presenting the final effect.

[0003] In the same alkaline environment, nylon fibers can maintain good structural stability and show strong corrosion resistance in the alkaline environment. Even under strong alkaline conditions, nylon fibers can maintain good structural stability and are not easily corroded. Coupled with its smooth surface, small friction coefficient, high wear-resistant mechanical strength, good toughness, and high tensile and compressive strength, the research on the fibrillation process of nylon combined with modal for interweaving can effectively avoid a series of negative impacts caused by the poor alkali resistance of polyester, providing a new direction for the research of fabrics with a fibrillation style. Summary of the Invention

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: The fibrillation process of modal and nylon interwoven fabrics includes the following steps: S1. Grey fabric weaving; S2. High-temperature pre-setting; S3. Fibrillation; S4. Polishing and singeing; S5. Modal dyeing; S6. Nylon dyeing; S7. In-machine softening; S8. Loop drying; S9. Finished product setting.

[0005] Preferably, in the fibrillation and polishing and singeing steps, the main pump of the overflow machine is set at 1450 r / min, the nozzle opening is 5 - 10%, and the nozzle pressure is 0.35 - 0.5 bar.

[0006] Preferably, in the fibrillating step, metal ion chelation is first carried out, and then caustic soda with a concentration of 20 g / L is used to raise the temperature to 110 °C at a heating rate of 1 °C / min, keep the temperature for 80 minutes, and then cool down to 70 °C at a cooling rate of 1 °C / min after the insulation ends, and the fibrillating effect is confirmed by sampling.

[0007] Preferably, in the singeing process, the rayon throwing optical fiber excellent enzyme 500 is used at 2.5%, pH 4.5 - 5, and the temperature is kept at 55 °C for 90 minutes.

[0008] Preferably, after the nylon dyeing is completed, in - machine softening is carried out, and the dosage of the softener HSS is 0.8%.

[0009] Preferably, in the loop drying step, the temperature is set at 65 °C, dried for 45 minutes, and after the end, the finished product is stenter - set.

[0010] The present invention provides a fibrillating process for modal and nylon interwoven fabrics. It has the following beneficial effects: In the past, for the same - structure fabrics interwoven with modal / polyester, after achieving the fibrillating effect, the fabric bursting strength loss exceeded 55%. However, for the fabrics woven with nylon instead of polyester, due to the alkali resistance of nylon, the tissue skeleton structure is maintained in the weaving structure, and the strength loss is only 25%. The present invention fills the drawbacks of the acidic process in the application market of the fibrillating process being unable to be deepened or the large strength loss in the alkaline process, and in terms of wearing, it is more wear - resistant than polyester materials and has a softer hand feeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the weaving raw material structure of the present invention; Figure 2 It is a process curve diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0013] Please refer to Figure 1 - Figure 2, the present invention provides a technical solution: Modal and nylon interwoven fabric opening process, raw material determination: due to the limit of the opening process leading to the loss of modal strength, and polyester's alkali resistance, this project selects nylon (nylon) as an auxiliary material to be woven together with modal. The weaving structure is set as an air layer, and the weaving raw materials are selected as follows: a, 30D spandex semi-bright silk Hyosung H350 (limited tube number); b, 40S compact siro spinning (14.8TexZ350) modal; c, 75D / 36F semi-bright round nylon (limited tube number); Due to the various limitations and disadvantages of acid fiber opening mentioned above, alkaline fiber opening was selected as the basic process for the study; Conduct laboratory sample proofing and set a reasonable temperature range for the process; Organize the production of sample specimens. Due to the oxidation resistance of nylon, the traditional method of using hydrogen peroxide as an auxiliary agent for fiber opening is cancelled. On this basis, detailed adjustments and attempts are made, and the mechanical parameters of the equipment are adjusted to verify that the test meets the style and all performance indicators are qualified. For the production fabrics at the sample stage, we organize trial wearing in multiple scenes and occasions and among different groups of people to verify the actual wearing effect and collect feedback, and continuously adjust the process conditions according to the actual situation; Organize test data analysis and material accumulation, test mass production process, and verify the fabric performance of mass production; The modal nylon imitation sand washing fiber opening and dyeing process comprises: grey cloth weaving→high temperature pre-setting→fiber opening→polishing and feeding→modal dyeing→nylon dyeing→softening in the machine→ring drying→finished product setting.

[0014] The temperature is set at 110°C, and the specific fiber opening process conditions are as follows: Mechanical conditions: Whether it is the fiber opening process or the polishing and etching process, strong water flow and mechanical action are required. The main pump of the overflow machine is set at 1450r / min, the nozzle opening is 5-10%; the nozzle pressure is 0.35-0.5bar; Fiber opening: First, metal ion chelation is carried out, and then caustic soda flakes with a concentration of 20g / L are added, and the temperature is raised to 110 degrees at a rate of 1℃ / min, and kept warm for 80 minutes; after the insulation is completed, the temperature is lowered to 70 degrees at a rate of 1℃ / min, and samples are taken to confirm the fiber opening effect; After the fiber opening effect is confirmed, the hair is etched. The rayon fiber polishing enzyme 500 is 2.5%, pH 4.5-5, and kept at 55 degrees for 90 minutes to ensure that the fabric surface is smooth and the surface hairiness is completely removed; Dye nylon, soften in the machine after the color is OK, and use 0.8% HSS softener; Dehydration ring drying, 65 degrees for 45 minutes, after which the finished product is stretched and shaped.

[0015] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art unless otherwise specified and limited.

Claims

1. Modal and nylon interwoven fabric opening process, characterized in that: The steps include: S1, grey cloth weaving; S2, high temperature pre-setting; S3, fiber opening; S4, polishing and etching; S5, Modal staining; S6, nylon dyeing; S7, soft inside the machine; S8, ring drying; S9, the finished product is finalized.

2. The fiber opening process of modal and nylon interwoven fabric according to claim 1, characterized in that: In the fiber opening and polishing and hair etching steps, the main pump of the overflow machine is set at 1450r / min, the nozzle opening is 5-10%, and the nozzle pressure is 0.35-0.5bar.

3. The fiber opening process of modal and nylon interwoven fabric according to claim 1, characterized in that: In the fiber opening step, metal ion chelation is first performed, and then caustic soda is added at a concentration of 20 g / L and the temperature is raised to 110 degrees at a heating rate of 1°C / min and kept warm for 80 minutes. After the insulation, the temperature is lowered to 70 degrees at a cooling rate of 1°C / min, and samples are taken to confirm the fiber opening effect.

4. The fiber opening process of modal and nylon interwoven fabric according to claim 3 is characterized in that: During the etching process, the rayon fiber was treated with 2.5% Fiber Enzyme 500, pH 4.5-5, and kept warm at 55 degrees for 90 minutes.

5. The fiber opening process of modal and nylon interwoven fabric according to claim 1, characterized in that: After the nylon is dyed, it is softened in the machine, and the amount of softener HSS is 0.8%.

6. The fiber opening process of modal and nylon interwoven fabric according to claim 1, characterized in that: The temperature in the ring drying step is set at 65 degrees, and the drying takes 45 minutes. After the drying is completed, the finished product is stretched and shaped.

Images