DENIM FABRIC CONTAINING RECYCLED COTTON

Abstract

The invention relates to denim fabrics woven in a 3 / 1 Z twill weave from multi-core weft yarns containing 50-10% cotton, 40-80% recycled cotton, 7.5% recycled polyester, and 2.5% recycled elastane, and warp yarns containing 100% cotton.

Description

1 TARIFF DENIM FABRIC CONTAINING RECYCLED COTTON Technical Area 5 The invention aims to improve the percentage of recycled cotton in the textile industry and enhance comfort. fabrics with improved properties, recycled cotton that contributes to sustainability It relates to denim woven fabric. State of the Art 10 Cotton is harvested in approximately 90 countries worldwide and used in textile production. It is the most important raw material source. It takes 20,000 liters of water to grow one kilogram of cotton. There are many pesticides used in cotton cultivation. Sustainable Unsustainable agricultural practices and intensive water use are destroying the ecosystems where cotton is grown. and pollutes the environment. Large amounts of natural gas are released during textile production processes. In addition to causing resource (water, oil, soil) depletion, it also releases toxic chemicals. It is being used and as a result, carbon dioxide is released. In addition to this situation... Millions of tons of textile waste are generated every year. The concept of sustainability... in terms of resource utilization, both for producers and consumers. It stands out as a very important concept. In this context, sustainability 20 The concept is relevant given that the world's population is increasing day by day, and millions of tons of textiles are produced every year. In today's world, where waste is generated, economic growth has implications for the environment and society. One of the key things to consider on the path to developing a sense of responsibility is... It is coming. Sustainability activities and legal developments regarding sustainability In light of this, different raw material options have been explored and recycled fibers have been used. It has started to become widespread. However, returning to the raw materials currently in use... Increasing the use of recycled fibers reduces the burden on the environment. 30 Many research and development studies are being carried out in its name. With this invention, sustainable denim will be possible. The yarns and fabrics have been brought to our country. 2 Yarns and sustainable and environmentally friendly products are becoming popular in the textile industry. An increase in interest in fabrics has been observed. Recycling studies in textiles. Upon examination, it is mostly revealed that cotton and / or polyester fibers are released during production. A certain percentage of the fibers produced and / or recycled after customer use is 5 the performance of textile products obtained using This is observed. In studies conducted to date, recycling from open-end yarn has been shown. Production was carried out using yarns with a high ratio. In patent application number TR2018 / 16641, recycling from denim and other textile waste is 10 The method for producing recycled, hygienic, and bleached fibers and yarns is described. In this method, sizing agent is applied to denim waste and / or textile waste. Those that contain it are subjected to desizing, disinfection and / or bleaching. It undergoes processing, is opened up and turned into fibers, and then prepared for yarn production through blending. It undergoes several stages and is then transformed into hygienic yarns. 15 Patent application number TR2018 / 05554 describes the use of recycled denim waste. The fabric production method is explained. The method involves using denim waste from production, denim Mixing with indigo dyeing waste improves fiber properties suitable for the yarn spinning process. to provide recycled fiber, at least one synthetic or regenerated cellulose fiber 20 blending with, and the yarns obtained as a result of spinning the blended fibers. The indigo dyeing process involves weaving or knitting with dyed yarns. It includes the steps involved in transforming it into denim fabric. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement in the relevant technical field is necessary. 25 It has been made. Purpose of the Invention The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve. 30 3 The main purpose of the invention is the selection of various recycled fibers (cotton, polyester, elastane). by being made and with different percentages of recycled cotton (80-70-60-50-40%). Quality, performance and comfort are achieved by working with a modified ring spinning system. The goal is to obtain high-quality denim fabrics. In this regard, different blends are used. cotton, recycled cotton and recycled polyester fiber yarns in proportions of 5 Denim fabrics are produced by manufacturing these yarns. The yarns produced here are in multi-core form. It has been defined. Find a solution that is environmentally friendly, sustainable, and has enhanced performance characteristics. The goal is to develop high-value fabric structures. By developing these fabrics, they can gain access to the market. High-demand products will be offered. 10 Find a purpose: a scarf made from fibers recycled after consumer use. The irregularity and strength values ​​of yarns produced using these yarns, denim fabrics have tensile strength, tear resistance, thermal resistance, water vapor permeability, and The casting values ​​are obtained according to standards. Based on the results obtained, these 15 that the recycling process meets the technical specifications required for denim production. It has been determined that the fabrics produced can be used effectively. Invention In this context, multiple staple fibers and filaments were used in modified ring spinning. And since some of these threads can be positioned as nuclei, these threads in this invention... It is described as multi-core. To fulfill the purposes described above, the invention incorporates 20 recycled cotton. Denim fabric with a 13 / 1 fineness, composed of 50-10% cotton and 40-80% other materials. Multi-containing 7.5% Recycled Cotton, 7.5% Recycled Polyester, and 2.5% Recycled Elastane. Made from core weft yarns and warp yarns containing 100% cotton in a 3 / 1 Z twill weave structure. It is a woven denim fabric. The structural and characteristic features and all the advantages of the invention are given in the figures below and 25 This becomes clearer thanks to the detailed explanation written with references to these figures. This will be understood as such, and therefore the evaluation will also take these forms and detailed explanations into account. This should be done taking that into consideration. Figures to Help Understand the Invention 30 Figure 1 shows the 3 / 1 Z twill weave repeat of the denim fabric that is the subject of this invention. 4 Detailed Description of the Invention This detailed explanation describes the preferred compositions of the denim fabric that is the subject of the invention. This explanation is provided solely to facilitate a better understanding of the subject. The invention is a denim fabric containing recycled cotton, characterized by its Ne 13 / 1 fineness (5). 50-10% cotton, 40-80% recycled cotton, 7.5% recycled polyester. Multi-Core weft yarns containing 2.5% recycled elastane and warp yarns containing 100% cotton. It relates to denim fabrics woven from yarns in a 3 / 1 Z twill weave structure. This invention incorporates 2.5% elastane and 7.5% recycled material through modification of the ring spinning system. The conversion used polyester and 90% cotton fibers. The cotton fiber varied by 10 Mixed with recycled cotton in varying proportions. In different recycling ratios. (40%, 40%, 50%, 60%, 80%) recycled cotton was used. Cotton, polyester and Yarns made using elastane were used as weft yarn. As for the warp yarn... Denim fabrics are produced using 100% cotton yarn in a 3 / 1 Z twill weave structure. Table 1. Yarn contents of denim fabric samples related to the invention. Sample Thread Number (What) Mixing Ratio Scarf Frequency (wire / cm) Warp Density (wire / cm) Reference 13 / 1 Ne 13 / 1 90% Cotton +7.5% Polyester + 2.5% Elastane Multi- Core 16 21.8 D1 13 / 1 What 13 / 1 50% Cotton + 40% Recycled Cotton + 7.5% Recycle Polyester+2.5% Recycle Elastane Multi-Core 16 21.8 D2 13 / 1 What 13 / 1 40% Cotton + 50% Recycled Cotton + 7.5% Recycle Polyester+2.5% Recycle Elastane Multi-Core 16 21.8 D3 13 / 1 What 13 / 1 30% Cotton + 60% Recycled Cotton + 7.5% Recycle Polyester+2.5% Recycle Elastane 16 21.8 Table 2. Life Cycle Analysis Results % Improvement Source Exhaustion Source Exhaustion (fossil fuels) Spherical Warming Ozone layer Thinning Person Life On it Toxic Effect Freshwater Life On it Toxic Effect REF 1 9.75 7.28 7.16 4.82 8.09 10.76 2 12.33 8.90 8.97 6.18 10.21 13.89 3 14.36 10.17 10.38 7.24 11.87 16.35 4 16.75 11.67 12.06 8.50 13.84 19.25 18.96 13.05 13.60 9.66 15.65 21.93 % Improvement Sea life on it toxic effect Terrestrial life on it toxic effect Photochemical oxidation Acidification Eutrophication Total Water Usage REF 1 6.72 11.11 7.52 8.35 8.48 8.90 2 8.44 14.35 9.43 10.60 10.85 11.48 3 9.78 16.90 10.93 12.37 12.72 13.52 4 11.37 19.90 12.71 14.47 14.93 15.92 12.84 22.68 14.34 16.40 16.97 18.14 Multi-Core D4 13 / 1 What 13 / 1 20% Cotton + 70% Recycled Cotton + 7.5% Recycle Polyester+2.5% Recycle Elastane Multi-Core 16 21.8 D5 13 / 1 What 13 / 1 10% Cotton + 80% Recycled Cotton + 7.5% Recycle Polyester+2.5% Recycle Elastane Multi-Core 16 21.8 6 Life cycle analysis was performed using the data from the fabrics obtained in the study, and Improvement values ​​for increasing the percentage of recycled fiber are presented in the table. It has been given. Accordingly, D5 with (%10 Cotton + %80 Recycled Cotton + %7.5 Recycled Polyester + 2.5% Recycled Elastane) contributes 13.6% to global warming and 5% to ozone depletion. The effect on human life was improved by 9.66% and by 15.65%. This invention encompasses one of the most important raw material sources for the textile industry. using cotton and yarns produced from cotton recycling Denim fabrics with a high conversion rate have been produced, and the performance of these fabrics... Its properties and thermal comfort characteristics have been examined. In the studies conducted, varying ratios of 10 Recycled yarns made using cotton, polyester, and elastane are used as weft yarns. It has been used as follows: cotton as warp yarn (70% local cotton, 30% recycled). Denim fabrics were produced using cotton yarn in a 3 / 1 Z twill weave structure. The resulting denim fabrics exhibited 15 characteristics such as tensile strength, tear strength, and elasticity. Performance tests and comfort factors such as thermal resistance, water vapor permeability, and drape. By conducting tests, the change in recycling rate can be examined in terms of fabric usage performance. An evaluation has been made in terms of yarn and fabric performance. This invention improves yarn and fabric performance. The effect of fiber properties, which directly influence thermal comfort, has been investigated. Accordingly, 20 uniform or blended recycled fibers of natural and synthetic origin. Denim fabrics woven from yarns produced using [method name] have thermal resistance and water vapor resistance. Thermal comfort properties such as permeability were measured. Within the scope of the study, the produced the structural properties of the fabrics and the percentage of recycled cotton used in the fabric It has been observed to affect performance and comfort features. The highest yarn breaking strength and Rkm (Kgf x Nm) values ​​in reference yarns It has been determined that (Ne 13 90% local cotton - 7.5% recycled polyester, 2.5%) (elastane). As the recycling rate used increases, the yarn strength increases as expected. A decrease in their values ​​has been measured. In yarn USTER and tensile strength measurements, hairiness values ​​are related to the recycled materials used. It has been determined that the percentage increases with the proportion of cotton. Recycled cotton. The hairiness of the yarns containing this is much higher compared to yarns produced entirely from local cotton. It is high. It is indicated by the Uster Hairiness Index (H) value. Yarn hairiness, 1 cm 7 the total length of the fibers of the thread which is of length in centimeters It is a measurement. The hairiness (H) value in yarns obtained by ring spinning method is D4-D5. Higher hairiness was found in the yarns. The lowest hairiness value was, as expected. It belongs to reference yarns. In yarns using recycled cotton, it adheres within the yarn. An excess of short and inefficient fibers increases the hairiness (H) value in yarns. 5 As the percentage of recycled cotton used in denim fabrics increases, the relative water vapor level rises. Permeability (%) is decreasing. According to the measurement results, the highest relative water vapor is observed. Its permeability is due to the use of 100% local cotton and no recycled cotton. This refers to denim fabrics woven with R yarns. It comes from post-consumer waste. The yarns produced contain more short fibers. These short fibers are frayed by the fuzzing of water vapor. It forms structures that prevent its passage. This leads to a decrease in the passage of water vapor. This is the reason. When thermal resistance values ​​are examined, it is observed that changing the yarn type affects the thermal resistance values ​​of the fabrics. It has been determined that it has an effect on denim fabrics. 15 recycled materials used in denim fabrics. It has been observed that as the cotton content increases, the thermal resistance (W / m2) values ​​also increase. This situation This is due to the fact that the rate of trapped stagnant air increases with the increase in hairiness. It is thought that, according to the measurement results, the lowest thermal resistance value is 100% local. with reference R yarns that use cotton and do not use recycled cotton It belongs to woven denim fabrics. More than 20% of the yarns are produced from post-consumer waste. It has short fibers and a complex structure. The fabrics have a more fluffy surface. As a result, the fabric that pills has high thermal resistance. Yarn It is frequently reported in the literature that thermal resistance values ​​increase as hairiness (h) values ​​increase. This situation has been stated and is an expected outcome. When evaluating the drape of denim fabrics, the drape coefficients... The reference (R) fabric is similar to all sample (D1-D2-D3-D4-D5) fabrics. It is observed that when the recycled cotton rate increases, according to the measured results... It was determined that there was no significant effect on the drape values ​​of the fabrics. Water vapor was used to investigate the thermal comfort properties of denim fabrics. According to permeability and thermal resistance test results, different yarn types with the same yarn count the change had a significant effect on the relative water vapor permeability values ​​of the fabrics. It has been determined that the produced denim fabrics were D5 from sample R. It was observed that the elasticity decreased significantly as we moved towards the sample. This is 35 8 The reason is the recycled cotton yarn included in the threads used in the weft. its structure has weak fiber-to-fiber adhesion and a complex structure. It can be said that as the recycling rate in the fabrics produced increases, the recycling rate also increases. The ability to gather information also decreases. When the tear strength values ​​of the produced denim fabrics in the weft direction were examined, Recycling included in blend ratios in fabrics with the same weft count It has been observed that as the cotton content increases, the tear strength values ​​decrease. When tear strength data in the weft direction are examined in general, it is observed that R is in the weft direction. The tear strength of the weft decreased as we moved from sample D5 to sample D5. This difference was observed when the yarn strength (Rkm) used in the weft yarn was examined. It can be said that this is due to the decrease in their values. Generally, when the breaking strength data in the weft direction are examined, it is observed that in the weft direction... Significant differences have been observed among the denim fabrics produced. The denim produced is 15 In fabrics, weft breakage occurs as you move from sample R to sample D5. It has been observed that its strength has decreased. When this difference is examined, it is seen that the weft yarn used The effect of mixing ratios has been measured.

Claims

9 REQUESTS 1. Denim fabric containing recycled cotton, characterized by a 50-10% ratio. Cotton, 40-80% Recycled Cotton, 7.5% Recycled Polyester, 2.5% Multi-Core weft yarns containing recycled elastane fiber and 100% cotton. Denim is a fabric woven from warp threads. 5 2. Denim fabric conforming to Claim 1, characterized by a 3 / 1 Z twill weave. It is a woven denim fabric.

3. Denim fabric conforming to Claim 1, characterized by being made from yarns with a fineness of Ne 13 / 1. It is a woven denim fabric.

4. Denim fabric conforming to Claim 1, with the following characteristics: NE 13 / 1 50% Cotton, 40% Recycled 10% Cotton, 7.5% Recycled Polyester, 2.5% Recycled Elastane Multi-Core Spindles It includes.

5. Denim fabric conforming to Claim 1, with the following composition: NE 13 / 1 40% Cotton, 50% Recycled. Cotton, 7.5% Recycled Polyester, 2.5% Recycled Elastane Multi-Core yarns. It includes. 15 6. Denim fabric conforming to Claim 1, with the following composition: NE 13 / 1 30% Cotton, 60% Recycled. Cotton, 7.5% Recycled Polyester, 2.5% Recycled Elastane Multi-Core yarns. It includes.

7. Denim fabric conforming to Claim 1, with the following composition: NE 13 / 1 20% Cotton + 70% Recycled Cotton + 7.5% Recycled Polyester + 2.5% Recycled Elastane Multi-Core yarns 20 It includes.

8. Denim fabric conforming to Claim 1, with the following composition: NE 13 / 1 10% Cotton + 80% Recycled Cotton + 7.5% Recycled Polyester + 2.5% Recycled Elastane Multi-Core yarns It includes.

9. Denim fabric conforming to Claim 1, with the following characteristics: Weft density 16 threads / cm, warp 25 Its density is 21.8 threads / cm.

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