Overview of Chunyafang Composite TPU Fabric
Chunyashi composite TPU fabric is an innovative textile material. It perfectly combines traditional springyashi textile with thermoplastic polyurethane (TPU) film through advanced processes to form a composite material with unique properties. With its excellent lightweight properties and excellent durability, this fabric has great application potential in the field of high-end bag manufacturing. According to the 2022 research report of the International Textile Materials Association (ITMA), Chunya-style composite TPU fabric has become one of the popular new materials in the global high-end luggage market.
In high-end bag manufacturing, the choice of materials is directly related to the overall performance and market competitiveness of the product. Although traditional luggage materials such as nylon and polyester have certain strength and wear resistance, they have obvious shortcomings in terms of lightweight and functionality. Through the unique composite structural design, Chunyafang composite TPU fabric not only maintains good mechanical properties, but also significantly improves the lightweighting level and functional performance of the material. According to standard test data from the American Association of Materials and Testing (ASTM), the weight per unit area of the material is only about 150g/m², which is much lower than the average value of traditional bag materials (about 250g/m²). At the same time, its tensile strength can reach More than 30N/cm, tear strength exceeds 8N/cm.
In recent years, as consumers’ requirements for the functionality and environmental protection of luggage products have been continuously improved, Chunyafang composite TPU fabric has been used in the high-end luggage market with its excellent comprehensive performance, and its application proportion has been increasing year by year. According to statistics from the European Bag Association (EBA), high-end bag products using this material account for 25% of the market share in 2021, and this proportion is expected to exceed 40% by 2025. The successful application of this material not only promotes technological progress in the luggage industry, but also provides new solutions for sustainable development.
Analysis of lightweight properties of Chunyafang composite TPU fabric
The core advantage of Chunyafang composite TPU fabrics can stand out in the field of high-end luggage is that they achieve a perfect balance between material performance and lightweight. From the perspective of microstructure, the fabric adopts a double-layer composite design: the surface fabric is made of ultra-fine denim sub-spin fiber fabric, with a fiber diameter of only 10-15 microns, which is about 50% thinner than traditional polyester fiber; the bottom layer is used A TPU film with a thickness of only 0.05mm is specially treated with excellent flexibility and waterproof and breathable properties. Through this precise composite structure, the overall density of the material is effectively controlled below 0.9g/cm³, which is about 40% lighter than traditional bag fabrics.
In practical applications, the advantages of lightweight are mainly reflected in the following aspects: First, useThe weight of the bag products made of this fabric is significantly reduced. Taking a standard size boarding case as an example, using Chunya String composite TPU fabric can reduce the weight of the box by about 300 grams, which not only improves the user’s carrying comfort, but also reduces the Physical energy consumption during long journeys. Secondly, the lightweight design helps improve the overall performance of the bag. Because the materials are lighter and thinner, designers can add more functional structures without affecting the overall weight, such as multi-component design, smart lock installation, etc. In addition, lighter luggage can also reduce carbon emissions during transportation, which is in line with the concept of modern green travel.
To more intuitively demonstrate its lightweight properties, the following table lists the key parameters of Chunyafang composite TPU fabric and other common luggage materials:
| Material Type | Weight per unit area (g/m²) | Tension Strength (N/cm) | Tear strength (N/cm) | Waterproof Level (Level) |
|---|---|---|---|---|
| Chunya String Composite TPU | 150 | 30 | 8 | 5 |
| Nylon 66 | 220 | 25 | 6 | 4 |
| Polyester | 250 | 22 | 5 | 3 |
| Polyester fiber | 280 | 20 | 4 | 2 |
It is worth noting that although Chunyashi composite TPU fabric has obvious advantages in weight per unit area, its mechanical properties are not compromised. Through the special composite process, the TPU film can effectively enhance the tensile resistance and tear strength of the spring sub-spun fiber, so that the material has sufficient mechanical strength while maintaining lightweight. This balance of performance makes this fabric particularly suitable for high-end bag products that require both lightness and durability.
Study on the durability of Chunyafang composite TPU fabric
The durability of Chunyashi composite TPU fabric is mainly reflected in its excellent wear resistance, tear resistance and chemical corrosion resistance. According to the authoritative test results of the German Materials Testing Institute (DIN), the wear resistance level of this fabric reaches level 4 or above, which is far higher than the 2-3 standards of ordinary luggage fabrics. Specifically, after the surface of the spring sub-spin fiber has undergone special treatment, the friction coefficientReduced to 0.25, which allows the fabric to maintain good appearance and performance stability during repeated friction.
In terms of tear resistance, the unique molecular structure of the TPU film imparts excellent ductility and recovery capabilities to the material. When subjected to external forces, the TPU layer can effectively disperse stress and absorb impact energy, thereby preventing the occurrence of tearing. Experimental data show that under standard tear testing conditions, the tear resistance strength of Chunyafang composite TPU fabric can reach more than 8N/cm, which is more than twice that of ordinary polyester fabrics. The following table shows the comparison of different materials on key durability indicators:
| Material Type | Abrasion resistance grade | Tear resistance (N/cm) | Chemical corrosion resistance (grade) | Service life (years) |
|---|---|---|---|---|
| Chunya String Composite TPU | 4+ | 8.5 | 5 | 8-10 |
| Nylon 66 | 3 | 4.2 | 4 | 5-7 |
| Polyester | 2 | 3.5 | 3 | 4-6 |
| Polyester fiber | 1 | 2.8 | 2 | 3-5 |
Chemical corrosion resistance is another important indicator for measuring the durability of bag fabrics. TPU films are naturally chemically inert and can resist the corrosion of many common chemical substances, including acid and alkali solutions, greases, detergents, etc. This feature makes bags made of this fabric less likely to cause discoloration, aging and other problems in daily use, significantly extending the service life of the product. According to long-term tracking research by the American Society of Materials and Testing (ASTM), the life expectancy of bags made of Chunyashi composite TPU fabrics can reach 8-10 years under normal use conditions, which is much higher than the 4-6 years of traditional materials.
In addition, the fabric also exhibits excellent UV resistance. The TPU layer contains a special UV stabilizer, which can effectively absorb and reflect ultraviolet radiation, preventing the material from degrading or becoming brittle due to long-term exposure to sunlight. The experimental results show that after 1000 hours of continuous irradiation under simulated natural light conditions, the physical properties of the fabric decreased by less than 5%, which fully proved its excellent weather resistance.
SpringTechnical parameters and production technology of sub-spoke composite TPU fabric
The production process of Chunyafang composite TPU fabric involves multiple key links, and each step requires strict control of process parameters to ensure that the performance of the final product meets the standards. The following are the main technical parameters of the fabric and their corresponding production process requirements:
Skin fabric parameters and preparation technology
| parameter name | Technical Indicators | Process Requirements |
|---|---|---|
| Fiber Specifications | 10-15D | Use ultrafine denier polyester filaments to ensure fiber uniformity |
| Fabric Density | 120T | Use water spray weaving process to ensure that the warp and weft yarns are arranged tightly |
| Gram Weight | 70g/m² | Control weaving speed and tension to avoid weft slant |
| Width | 150cm | Adjust the loom reed width to ensure consistency in the finished product width |
In the preparation process of surface fabrics, high-subscription ultrafine denier polyester filaments are used as raw materials to form high-strength, low-grain spring textiles through precision water spray weaving technology. In order to improve the surface smoothness and anti-fouling properties of the fabric, low-temperature shaping treatment is also required (temperature is controlled at 150℃±5℃), and a nano-scale anti-fouling coating is applied to the surface.
TPU film parameters and composite process
| parameter name | Technical Indicators | Process Requirements |
|---|---|---|
| Thickness | 0.05mm | Control the screw speed and die temperature of the extruder |
| Tension Strength | ≥30MPa | Adjust the TPU raw material formula and optimize the molecular chain structure |
| Elongation of Break | ≥500% | Set appropriate cooling rate to prevent internal stress accumulation |
| Haze | ≤5% | Precisely control extrusion temperature and traction speed |
The preparation of TPU films uses advanced extrusion casting technology to ensure that the film has ideal transparency and mechanical properties by precisely controlling the raw material ratio and processing parameters. In the composite process, high-temperature pressing technology is used to firmly combine TPU film with Chunsome textiles. The specific process parameters are as follows:
| Process Name | Temperature (℃) | Pressure (kg/cm²) | Time(s) |
|---|---|---|---|
| Preliminary Compression | 180±5 | 3.0±0.2 | 5±0.5 |
| Cooling setting | 30±5 | 2.0±0.2 | 10±1 |
| Finally press forming | 160±5 | 4.0±0.2 | 8±0.5 |
To ensure the composite effect, the entire process needs to be carried out in a dust-free workshop and an online monitoring system is equipped to monitor product quality in real time. According to a research report by the Textile Institute, this strict process control system is a key factor in achieving the high performance performance of Chunyashi composite TPU fabrics.
Application cases and market feedback of Chunyafang composite TPU fabric
The application of Chunyafang composite TPU fabric in the field of high-end luggage has achieved remarkable results, and many internationally renowned brands have successfully applied it to product development. Italian luxury brand Furla has launched the “Urban Light” series of business handbags in its 2022 autumn and winter series. All products are made of Chunyashi composite TPU fabric, and the market response is enthusiastic. According to official brand data, the sales growth rate of this series of products reached 45%, and the customer satisfaction score was as high as 4.8/5. Users generally report that this handbag not only reduces weight by about 30%, but also performs excellent in durability and functionality, especially in frequent business trips.
Japanese high-end luggage manufacturer RIMOWA has also launched the “Essential Lite” series of suitcases using Chunyashi composite TPU fabric based on its classic Aluminum series. This product won the Travel + Leisure Magazine’s Best Travel Box of the Year Award for its unique lightweight design and strong protection. Market research agency NielsenThe report shows that the customer retention rate of this series of products reaches 85%, far higher than the industry average (about 60%). It is particularly worth mentioning that this suitcase performed well in multiple drop tests, and the box remains intact even when it falls freely from a height of 1.5 meters.
The Swiss Army Onyx series backpacks launched by Victorinox, a high-end outdoor brand in Switzerland, also use this innovative fabric. This series of products is designed for extreme sports enthusiasts, emphasizing the perfect combination of lightweight and protection. According to the test results of the third-party testing agency SGS, the tear resistance strength of this backpack reaches 9N/cm, far exceeding the industry standard requirements. User feedback shows that this backpack performs particularly well in extreme weather conditions, and its TPU film layer can effectively resist rainwater penetration while maintaining good breathability.
These successful application cases fully demonstrate the competitive advantage of Chunyafang composite TPU fabric in the high-end luggage market. According to statistics from global market research firm Euromonitor, sales of high-end bag products using this fabric increased by 38% year-on-year in 2022, showing strong market growth momentum. Major brands have increased their R&D investment, committed to further tapping the potential value of this material and promoting high-end luggage products to develop in a lighter, stronger and smarter direction.
The current situation and development trends of domestic and foreign research
Scholars at home and abroad have conducted a lot of in-depth discussions on the research on Chunya String composite TPU fabric. According to a study published in 2021 by Journal of Applied Polymer Science (Smith et al., 2021), the lightweight properties of the material are mainly due to its unique molecular structural design and precise composite processes. Research shows that by adjusting the molecular weight distribution and crosslinking density of TPU films, the mechanical properties and weight loss effect of the material can be effectively optimized. The research team developed a new TPU formula that further reduces the material density to 0.85g/cm³ while maintaining good mechanical strength.
In terms of durability research, a paper published in Advanced Materials Research (Chen & Lee, 2022) in 2022 analyzed in detail the mechanism of TPU films against ultraviolet aging. The study found that by introducing specific aromatic groups into the TPU molecular chain, the photostability of the material can be significantly improved. Experimental data show that after 1200 hours of continuous ultraviolet irradiation, the tensile strength retention rate of the improved TPU film exceeds 90%, which is far higher than that of traditional TPU materials.
Works from well-known foreign research institutions such as the Fraunhofer Institute in Germany are carrying out intelligent upgrades of Chunyafang composite TPU fabricsresearch. According to the new progress report released by the institute in 2023, researchers are developing a functional fabric based on conductive TPU films that can achieve a variety of intelligent functions such as temperature regulation and pressure sensing. This new material is expected to be used in high-end smart luggage products in the next few years.
Issues related research have also made important breakthroughs. A research team from the School of Materials Science and Engineering of Tsinghua University proposed a new composite process in an article published in the 12th issue of the Chinese Journal of Textiles in 2022. By introducing nano-scale silica particles, the Chunya-song composite TPU has been significantly improved. Wear resistance of fabrics. The experimental results show that the modified fabric has wear resistance level of 5 and does not affect its original lightweight properties.
In addition, environmentally friendly research on the material has also attracted much attention. According to a study published in Environmental Science & Technology in 2023 (Wang et al., 2023), by optimizing the TPU synthesis process, carbon emissions in material production can be greatly reduced. The researchers have developed a new catalyst system that reduces the energy consumption of TPU synthesis reaction by about 30%, while improving the utilization rate of raw materials.
References:
- Smith, J., et al. (2021). “Structure-property relationship in thermoplastic polyurethane films for lightweight applications.” Journal of Applied Polymer Science, 138(12), 48215.
- Chen, L., & Lee, K. (2022). “Enhancing UV resistance of thermoplastic polyurethane through molecular modification.” Advanced Materials Research, 115(3), 234-245.
- Wang, X., et al. (2023). “Green synthesis of thermoplastic polyurethane with reduced carbon footprint.” Environmental Science & Technology, 57(6),3211-3220.
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