Novel environment-friendly degradable tencel fabric and preparation method thereof

Abstract

The invention relates to a novel environment-friendly degradable tencel fabric and a preparation method thereof, and belongs to the field of fabric weaving, the preparation method comprises twisting, shaping, weaving and dyeing and finishing, tencel threads are twisted in a rotor spinning mode, at least two or more low-twist tencel threads are spirally wound in a directional mode, high-twist tencel yarns are obtained, and the tencel yarns are woven into the tencel fabric. The tencel fabric is characterized in that the tencel fabric is twisted with tencel yarns, the tencel yarns are subjected to shaping treatment, the tencel yarns subjected to shaping treatment are subjected to waxing shaping treatment, and the tencel fabric is subjected to weaving and dyeing and finishing treatment by taking the tencel yarns subjected to shaping treatment as yarn raw materials and carrying out dyeing and finishing treatment on the woven tencel fabric. The novel environment-friendly degradable tencel fabric has the advantages that the problem that the weaving process of existing tencel fabric is long is solved, the performance and the environment-friendly advantage of the fabric are remarkably improved, and the novel environment-friendly degradable tencel fabric can be applied to vamps, outdoor clothes, outdoor backpacks or other outdoor sports equipment.

Description

Technical Field

[0001] The invention relates to a novel environmentally friendly and degradable Tencel fabric and a preparation method thereof, belonging to the field of fabric weaving. Background Art

[0002] As the world's attention to environmental protection and sustainable development continues to increase, consumers' demand for environmentally friendly and degradable materials is growing. In the textile field, traditional fabrics often have problems such as non-degradability and burden on the environment. Therefore, the development of new environmentally friendly and degradable fabrics has become an important development direction for the industry.

[0003] Tencel fiber is a green and environmentally friendly fiber made from renewable wood. It is biodegradable and harmless to the ecological environment. Furthermore, Tencel fiber boasts excellent properties such as moisture absorption, breathability, softness, and comfort, making it widely used in high-end fashion, household goods, and other fields. However, traditional Tencel fabrics have limitations in their production process, such as low production efficiency and the need for further improvement in fabric performance.

[0004] Traditional Tencel fabric production relies on a simple weaving process. While this process can produce fabrics with certain performance characteristics, it lacks performance in terms of wear resistance, strength, and moisture wicking. For example, the process disclosed in patent CN109722762A is lengthy, resulting in low production efficiency and requiring further improvement in terms of the fabric's wear resistance and strength. Furthermore, traditional Tencel fabrics also have limitations in terms of elasticity and gloss, restricting their application in high-end markets. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a new method for preparing environmentally friendly and degradable Tencel fabrics to solve the problems that the existing Tencel fabrics have a long weaving process and the performance of the fabrics needs to be improved.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solution: a preparation method of a novel environmentally friendly and degradable Tencel fabric, the preparation method comprising the following steps: S1. Twisting treatment: The Tencel yarn is twisted by using rotor spinning to spirally entwine at least two or more low-twist Tencel yarns in a directional manner to obtain a high-twist Tencel yarn. Low-twist yarn refers to yarn with low twist, relatively loose yarn structure, and weak internal fiber cohesion. High-twist yarn refers to yarn with high twist, tight and strong yarn structure, and extremely strong inter-fiber cohesion. Tencel yarn is the low-twist raw material used for twisting. The desired high-twist Tencel yarn is obtained by twisting the Tencel yarn. S2, shaping treatment: waxing and shaping the Tencel yarn obtained in step S1; S3, weaving and dyeing and finishing: using the Tencel yarn obtained in step S2 as yarn raw material, weaving a Tencel fabric, and performing dyeing and finishing on the woven Tencel fabric.

[0007] Preferably, in step S1, the twist of the Tencel thread material is ≤100 twists / 10cm; the twist of the Tencel yarn is ≥250 twists / 10cm.

[0008] Preferably, in step S1, the twisted Tencel yarn is S-twisted, the yarn twist direction is the spiral winding direction of the fibers in the yarn, and the S-twist is that the fiber spiral trajectory is inclined from "lower right to upper left". The use of S-twisted Tencel can produce different textures during the weaving process, and has better stability during the weaving process than Z-twisted Tencel.

[0009] Preferably, in step S1, the twisting process uses a two-for-one twister to twist the Tencel yarn, the twisting speed is 2500-3500 r / min, and the winding angle is 25°-35°.

[0010] Preferably, in step S3, the Tencel fabric comprises a first warp yarn, a second warp yarn, a first weft yarn and a second weft yarn, and the warp yarn and the weft yarn are respectively one of 250 twist / 10cm Tencel yarn or 450 twist / 10cm Tencel yarn, 250 twist / 10cm and 450 twist / 10cm are the optimal solutions. When the yarn twist is too high or too low, it may lead to a decrease in strength and affect use. The warp and weft interweaving method is the optimal weaving method, which can ensure the tensile and tear strength of the fabric in the warp and weft directions to a large extent. Fabrics woven by weft knitting and warp knitting are difficult to ensure the tensile and tear strength in the warp and weft directions at the same time.

[0011] Preferably, the Tencel fabric comprises a double-layer structure, which is the optimal structure, ensuring both the strength and wear resistance of the fabric and its lightness. Although single-layer and double-layer or higher fabric structures are feasible, they are slightly inferior to double-layer structures in strength or lightness.

[0012] Preferably, in step S3, the dyeing and finishing treatment includes washing, setting and calendering.

[0013] Preferably, the temperature during washing is 40-60°C, the speed is 10-20m / min; the temperature during setting is 155-185°C, the speed is 10-20m / min, and the air volume is 70-90; the temperature during calendering is 165-185°C, the speed is 10-20m / min.

[0014] A novel environmentally friendly and degradable Tencel fabric is prepared by adopting a method for preparing the novel environmentally friendly and degradable Tencel fabric. At least a part of the fabric is used for shoe uppers, outdoor clothing, outdoor backpacks or other outdoor sports equipment.

[0015] Preferably, the novel environmentally friendly and degradable Tencel fabric has a wear resistance of 400-500 times, a warp tear strength of 8-11 kg, and a weft tear strength of 8-11 kg.

[0016] The beneficial effects of the present invention are: This application is woven through a specially designed organizational structure combined with a weaving process, and the warp and weft yarns are both twisted Tencel yarns. During the weaving process, the yarns are tightly interwoven, making the fabric surface smoother and smoother, presenting a good gloss effect. The twisted Tencel yarn has high strength and wear resistance, can better resist friction and wear, extend the service life of the fabric, and reduce the waste of resources caused by frequent replacement of fabrics.

[0017] The special organizational structure of the present application enables the stress of the fabric to be better dispersed when it is torn by external force. Compared with ordinary fabrics, this ability to disperse stress makes the fabric less likely to crack or break when it is torn with the same force, which can effectively reduce the risk of damage to the fabric during use and improve the durability of the product.

[0018] This application adopts shuttle weaving technology for weaving, which reduces multiple processing and finishing links compared with traditional fabric weaving technology. This not only reduces energy consumption, but also reduces the emission of pollutants such as wastewater and waste gas generated in the production process. The entire production process is more environmentally friendly and in line with the concept of green production. In addition, the fabric raw material is Tencel fiber. In the natural environment, Tencel fiber can be completely degraded and will not cause harm to the ecological environment. It meets the current global requirements for environmental protection and reduces the pollution caused to the environment by traditional non-degradable fabrics after disposal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings: Figure 1 This is a schematic diagram of the preparation process of a new type of environmentally friendly and degradable Tencel fabric of the present invention; Figure 2 This is a schematic diagram of the organizational structure of a new type of environmentally friendly and degradable Tencel fabric of the present invention; Figure 3 This is a schematic diagram of the process surface weaving diagram of a new type of environmentally friendly and degradable Tencel fabric of the present invention. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] Example 1: like Figure 1 、 Figure 2 and Figure 3 As shown, this embodiment provides a method for preparing a novel environmentally friendly and degradable Tencel fabric, the preparation method comprising the following steps: S1. Twisting treatment: twisting the Tencel yarn by using a rotor spinning method, so that at least two or more low-twist Tencel yarns are directional and spirally wound to obtain a high-twist Tencel yarn; S2, shaping treatment: waxing and shaping the Tencel yarn obtained in step S1; S3, weaving and dyeing and finishing: using the Tencel yarn obtained in step S2 as yarn raw material, weaving a Tencel fabric, and performing dyeing and finishing on the woven Tencel fabric.

[0022] The specific production process is: (1) Raw material preparation: Select two or more Tencel yarns with a specification of 60s and a twist of ≤100 twists / 10cm as raw materials, and place the yarn in an environment with a relative humidity of 60-90%. The control of this environmental humidity helps to ensure the smoothness of the yarn in the subsequent processing, avoid problems such as yarn entanglement and breakage caused by static electricity, and improve production stability and product quality; (2) Process parameter setting: Since S-twisted Tencel can produce different textures during the weaving process and is more stable than Z-twisted Tencel during the weaving process, the S-twist direction is selected when further twisting to form strands. The twist of the strands is set to 450 twists / 10cm and 250 twists / 10cm respectively, the spindle speed is set to 2500-3500r / min, and the winding angle is 25°-35°. Adjustments are made according to the equipment and the properties of the yarn, and an automatic tension controller is used during the processing to ensure uniform yarn tension and avoid yarn breakage. (3) Twisting process: The Tencel yarn is wound onto the spindle of the twister, passed through the yarn guide hook, passed through the tension device, and finally fixed on the winding device and wound at a winding speed of 25-35m / min. This process ensures the stability and uniformity of the yarn during the twisting process, providing high-quality yarn for subsequent weaving; (4) Yarn post-processing: When the equipment reaches the set twist and length, it automatically stops twisting and waxes the yarn. The temperature is controlled at 60-80°C. Waxing and shaping can enhance the strength and stability of the yarn, reduce the yarn breakage rate in subsequent processing, and make the yarn surface smoother, which is convenient for subsequent weaving processing. (5) Fabric structure: The first warp yarn and the second warp yarn of the untwisted Tencel yarn are warped separately. The first warp yarn and the second warp yarn are both made of 250 twists / 10cm, and the first weft yarn and the second weft yarn are both made of 450 twists / 10cm Tencel yarn. The fabric structure is designed to be Figure 1The weave structure shown in the figure is used for drawing in and reeding, with 3 warp yarns inserted into each reed for the first warp yarn and 4 warp yarns inserted into each reed for the second warp yarn, ensuring that the yarns are evenly arranged in the reed teeth. This weave structure design helps to achieve specific fabric properties and appearance, and improves the strength and wear resistance of the fabric; (6) Weaving process: According to the designed weave structure, the heald frame moves up and down according to the program of the opening device to form the shed. The first warp yarn and the second warp yarn are raised and lowered according to their respective weave structures, and the weft yarn is beaten with a reed so that the weft yarn is tightly interwoven with the warp yarn. This process ensures the tightness and uniformity of the fabric, and improves the quality and performance of the fabric. (7) Winding and warp feeding: As weaving progresses, the fabric is continuously wound onto the cloth roller. At the same time, the warp yarns on the warp beam are continuously fed to maintain a stable and uniform warp tension. This process ensures the continuity and stability of the weaving process and avoids fabric defects caused by tension fluctuations. (8) Dyeing and finishing: Check the quality of the fabric after weaving to ensure that the fabric meets the quality requirements and perform dyeing and finishing. The specific processing steps are as follows: Washing: Wash the fabric at a temperature of 40-60°C and a speed of 10-20 m / min. The purpose of washing is to remove impurities and oil stains remaining in the fabric during the weaving process, while making the fabric size more stable and improving the feel and appearance of the fabric; Setting: The fabric is heat-set at a temperature of 155-185℃, with a setting speed of 10-20m / min and an air volume of 70-90. The purpose of setting is to change the fiber molecular structure of the fabric through high temperature, thereby stabilizing the size of the fabric, reducing shrinkage, and improving the appearance and feel of the fabric, making it smoother and smoother. Calendering: Calendering is carried out at a temperature of 165-185°C and a speed of 10-20m / min. Calendering can make the fabric surface smoother and flatter, improve the gloss and appearance quality of the fabric, and also help improve the feel of the fabric, making it softer and more delicate.

[0023] Through the above production process, the new environmentally friendly and degradable Tencel fabric produced in this embodiment has good gloss, excellent wear resistance and tear resistance, and excellent elasticity and other properties.

[0024] Example 2: The specific production process provided in Example 1 was used for weaving. Only the different twists of the first warp yarn, the second warp yarn, the first weft yarn, and the second weft yarn were combined and compared. The twist was one of the Tencel yarns with a twist of 250 twists / 10 cm or 450 twists / 10 cm. The effects of different twist combinations on the performance of the new environmentally friendly and degradable Tencel fabric were studied to determine the optimal twist combination and then produce the twist combination with the best performance. The specific settings of the different twist combinations are as follows: The fabrics prepared from the above warp and weft yarns were subjected to performance tests. The test process and results are as follows: Weight: Cut samples of the same size from each fabric, weigh each sample using a high-precision electronic balance, and record the data repeatedly to obtain the average value of the sample; Bursting Strength: Use a bursting strength tester, which tests the burst resistance of the fabric by applying gradually increasing air pressure. The sample is fixed in the fixture of the tester, and the air pressure is gradually increased until the fabric breaks. The air pressure value at the time of rupture is recorded and converted into bursting strength (kg / cm²); Warp tear strength and weft tear strength: Use a tear strength tester Testing instrument, fix one end of the sample in the tester's fixture, apply tension in the warp or weft direction until the sample tears, record the force value at the time of tearing, and obtain the average value of the sample through multiple tests; Warp tensile strength and weft tensile strength: Use a universal materials testing machine or tensile strength tester, fix both ends of the sample in the tester's fixture, apply tension until the sample breaks, record the force value at the time of breaking and the width of the sample, and obtain the tensile strength (kg / 2.5cm) by dividing the breaking force value by the width of the sample (usually 2.5cm).

[0025] By analyzing the above performance results, it can be found that Comparative Example 3 has good bursting strength, tear strength and tensile strength, which shows that the new environmentally friendly and degradable Tencel fabric of the present invention has excellent mechanical properties.

[0026] Specifically, the bursting strength of Comparative Example 3 reached 17.9kg / cm², which is at a relatively high level among all the test samples, second only to 18.1kg / cm² of Comparative Example 1. This shows that the fabric has excellent ability to withstand pressure and can effectively resist external impact and pressure, thus showing good durability and reliability in practical applications; the warp tear strength of Comparative Example 3 is 9.9kg, and the weft tear strength is 10.3kg. Both indicators show that the fabric has significant advantages in resisting tearing, and can effectively prevent tearing due to external forces during use, further enhancing the service life and stability of the fabric; the warp tensile strength of Comparative Example 3 is 43.9kg / 2.5cm, and the weft tensile strength is 23.7kg / 2.5cm. These data show that the fabric also performs well in tensile properties, has good elasticity and ductility, and can maintain structural integrity and functionality under a certain degree of stretching and deformation.

[0027] Example 3: The difference between this embodiment and embodiment 2 is that: based on comparative example 3, the yarn twist of the first weft yarn and the second weft yarn is exchanged to test the effect of the different twists of the first weft yarn and the second weft yarn on the overall fabric. The specific yarn twists of comparative examples 3 and 4 are as follows: By comparing the weight, bursting strength, tearing strength and tensile strength of samples of different comparison ratios, the performance test results can be obtained as follows: Based on the above performance test results, Comparative Example 4 is slightly inferior to Comparative Example 3 in bursting strength, warp tear strength, weft tear strength and warp tensile strength, especially in weft tensile strength. This shows that the reduction of the first weft yarn twist has a more obvious effect on the weft strength of the fabric, indicating that the weft strength is more sensitive to the change of the first weft yarn twist.

[0028] Example 4: The weaving structure of the present application adopts a double-layer weaving design, and the first warp yarn, the second warp yarn, the first weft yarn and the second weft yarn are respectively selected from Tencel yarns with different or the same twist. This double-layer weaving structure not only increases the thickness and fullness of the fabric, but also enables the fabric to have different performance characteristics in the surface and inner layers. For example: the surface yarn has a higher twist, with better gloss and wear resistance; the inner yarn has a lower twist, with better softness and comfort. Compared with the existing Tencel fabrics that mostly use single-layer weaving structures such as plain, twill and satin, although it can meet basic weaving requirements, it has certain limitations in thickness, fullness and performance diversity.

[0029] In addition, the organizational structure of the present application can ensure uniform distribution of yarns during weaving, reduce friction and wear between yarns, improve weaving efficiency and fabric quality, and better adapt to the design of double-layer organizational structure, further improving the performance and quality of the fabric. Compared with the simple threading method used in existing Tencel fabrics, such as threading the same number of warp yarns per reed, this method can meet the weaving requirements, but there are certain deficiencies in the uniformity of yarn distribution and weaving efficiency.

[0030] Therefore, the present application improves the gloss, wear resistance, tear resistance, elasticity and moisture wicking properties of the fabric through special warp and weft twist matching, double-layer organizational design, optimized threading and reeding method and weaving process parameters.

[0031] The present application is woven through a specially designed organizational structure combined with a weaving process, and the warp and weft yarns are all Tencel yarns that have been twisted, which tightly interweave during weaving, making the fabric surface smoother and more glossy. The twisted Tencel yarns have high strength and wear resistance, which can better resist friction and wear, prolong the service life of the fabric and reduce resource waste caused by frequent replacement of the fabric.

[0032] The special organizational structure of the present application allows stress to be better dispersed when the fabric is subjected to external tearing, which makes the fabric less likely to tear or break when subjected to the same degree of tearing compared to ordinary fabrics, effectively reducing the risk of damage to the fabric during use and improving the durability of the product.

[0033] The present application uses a weaving process, which reduces the number of processing and finishing steps compared to traditional fabric weaving processes, not only reducing energy consumption, but also reducing the emission of pollutants such as wastewater and waste gas during production, making the entire production process more environmentally friendly and in line with the concept of green production. The fabric raw material is Tencel fiber, which can be completely degraded in a natural environment and does not harm the ecological environment, meeting the current global environmental protection requirements and reducing the pollution caused by traditional non-degradable fabrics when discarded.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for preparing a novel environmentally friendly and degradable Tencel fabric, characterized by: The preparation method comprises the following steps: S1. Twisting treatment: twisting the Tencel yarn by using a rotor spinning method, so that at least two or more low-twist Tencel yarns are directional and spirally wound to obtain a high-twist Tencel yarn; S2, shaping treatment: waxing and shaping the Tencel yarn obtained in step S1; S3, weaving and dyeing and finishing: using the Tencel yarn obtained in step S2 as yarn raw material, weaving a Tencel fabric, and performing dyeing and finishing on the woven Tencel fabric.

2. The method for preparing a novel environmentally friendly and degradable Tencel fabric according to claim 1, characterized in that: In step S1, the twist of the Tencel thread material is ≤100 twists / 10cm; the twist of the Tencel yarn is ≥250 twists / 10cm.

3. The method for preparing a novel environmentally friendly and degradable Tencel fabric according to claim 1, characterized in that: In step S1, the twisted Tencel yarn is S-twisted.

4. The method for preparing a novel environmentally friendly and degradable Tencel fabric according to claim 3, characterized in that: In step S1, the twisting process uses a two-for-one twister to twist the Tencel yarn, the twisting speed is 2500-3500 r / min, and the winding angle is 25°-35°.

5. The method for preparing a novel environmentally friendly and degradable Tencel fabric according to claim 1, characterized in that: In step S3, the Tencel fabric includes a first warp yarn, a second warp yarn, a first weft yarn, and a second weft yarn, and the warp yarn and the weft yarn are respectively one of 250 twists / 10cm Tencel yarn and 450 twists / 10cm Tencel yarn.

6. The method for preparing a novel environmentally friendly and degradable Tencel fabric according to claim 5, characterized in that: The Tencel fabric comprises a double-layer structure.

7. The method for preparing a novel environmentally friendly and degradable Tencel fabric according to claim 1, characterized in that: In step S3, the dyeing and finishing treatment includes washing, setting and calendering.

8. The method for preparing a novel environmentally friendly and degradable Tencel fabric according to claim 7, characterized in that: The temperature during washing is 40-60℃, and the speed is 10-20m / min; the temperature during setting is 155-185℃, the speed is 12m / min, and the air volume is 70-90; the temperature during calendering is 165-185℃, and the speed is 10-20m / min.

9. A novel environmentally friendly and degradable Tencel fabric prepared by the method for preparing the novel environmentally friendly and degradable Tencel fabric according to any one of claims 1 to 8, characterized in that: At least a portion of the fabric is applied to shoe uppers, outdoor clothing, outdoor backpacks or other outdoor sports equipment.

10. The novel environmentally friendly and degradable Tencel fabric according to claim 9, characterized in that: The novel environmentally friendly and degradable Tencel fabric has a wear resistance of 400-500 times, a warp tear strength of 8-11 kg, and a weft tear strength of 8-11 kg.

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