Overview of elastic fabric knitted fabric composite PU silver coated fabric Elastic knitted fabric composite PU silver coated fabric is a new type of intelligent temperature-controlled textile mate...
Overview of elastic fabric knitted fabric composite PU silver coated fabric
Elastic knitted fabric composite PU silver coated fabric is a new type of intelligent temperature-controlled textile material, widely used in sportswear, outdoor equipment and medical protection fields. This fabric gives it unique performance characteristics by combining traditional knitted fabrics with polyurethane (PU) coatings and silver coatings on its surface. First, the elastic cloth itself has good elasticity and can provide a comfortable wearing experience; secondly, the PU coating enhances the waterproofness and wear resistance of the fabric, making it more suitable for use in complex environments; again, the silver coating not only gives The antibacterial properties of the fabric are also used to achieve efficient temperature control effects by reflecting infrared rays.
The core technology of this fabric lies in its intelligent temperature control function. In low temperature environments, silver coating can effectively reflect infrared heat radiation emitted by the human body, reduce heat loss, and maintain body temperature; while in high temperature environments, the PU layer can accelerate sweat evaporation, while the silver coating can block the invasion of external heat sources. , reduce body surface temperature. This bidirectional adjustment mechanism allows the fabric to adapt to different climatic conditions and provide users with an all-weather comfortable experience.
In addition, elastic knitted fabric composite PU silver coated fabric also has environmental protection properties. Its production process adopts a low-energy-consuming process and minimizes the use of chemical reagents, which is in line with the modern green manufacturing concept. Therefore, whether from the perspective of functionality or sustainable development, this fabric represents a new direction for future textile development.
Next, we will discuss in detail the specific parameters of this fabric and its key technical principles for implementing intelligent temperature control.
Basic parameters and structural characteristics of fabric
Stretch-knitted fabric composite PU silver coated fabric consists of multiple layers of material, each layer having its specific functions and characteristics. The following are the main parameters and their specific values of the fabric:
Table 1: Basic parameters of elastic knitted fabric composite PU silver coated fabric
| parameter name | Unit | Value Range | Remarks |
|---|---|---|---|
| Elastic elongation | % | 30-50 | Measurement in tensile test |
| Tear Strength | N/cm² | ≥20 | Complied with ISO 13934 standard |
| UV Anti-UV Index | UPF | ≥50+ | Providing excellent UV protection |
| Thermal conductivity | W/mK | 0.03-0.05 | Measure the heat conduction efficiency |
| Breathability | mm/s | ≥5 | Ensure good air circulation |
| Abrasion resistance | Loop number | ≥5000 times | Tested according to ASTM D3884 standard |
These parameters show that the fabric not only has excellent mechanical properties and physical properties, but also has outstanding performance in thermal management and protection. For example, a high UV resistance index (UPF ≥50+) ensures the user’s safety in the sun, while a low thermal conductivity helps maintain a stable somatosensory temperature.
Analysis of its structural characteristics further, the fabric consists of three layers: the outer silver coating, the middle PU layer and the inner elastic knitted fabric. The tight combination between each layer is achieved through special bonding technology, which not only ensures overall flexibility but also enhances durability. Specifically:
- External silver coating: Using nano-scale silver particle spraying technology to form a uniform and dense protective layer. In addition to having significant antibacterial effects, it can also effectively reflect infrared rays and achieve temperature control.
- Intermediate PU layer: As a key part of load-bearing and waterproofing, this layer has been specially treated to improve its ductility and durability.
- Inner elastic knitted fabric: A layer that directly contacts the skin, woven with high elastic fibers, providing excellent comfort and fit.
To sum up, elastic knitted fabric composite PU silver coated fabric meets various functional needs while ensuring high quality and high product quality with its precise control parameters and reasonable structural design. performance.
Intelligent temperature control principle and working mechanism
The reason why elastic knitted fabric composite PU silver coated fabric can achieve intelligent temperature control is mainly due to its unique structural design and material characteristics. The following will introduce in detail how the fabric can regulate body temperature through physical and chemical processes under different temperature conditions.
Principle of Temperature Control
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Heat Reflection Mechanism: As one of the key components, silver coating has excellent infrared reflection ability. According to literature [1], silver can reflect up to 95% of infrared radiation in the visible spectrum. This means that in cold environments, the silver coating can effectively reflect infrared heat radiation emitted by the human body, reducing heat loss, and thus keeping the body warm.
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Heat Conduction and Control: The PU layer is responsible for regulating heat conduction. As a thermal insulation material, it can slow down the transfer rate of heat. In hot weather, the PU layer prevents external heat from conducting into the body, and at the same time promotes internal heat to dissipate outward, helping to cool down.
Working Mechanism
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Heat insulation in low temperature environments: When the external temperature drops, the silver coating begins to perform its function of reflecting infrared rays, reflecting the heat emitted by the human body back into the body. At the same time, the PU layer prevents cold air from entering, forming a relatively closed warm space.
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Heat dissipation mechanism in high temperature environments: Under high temperature conditions, the silver coating turns to prevent the invasion of external heat sources, while the PU layer accelerates the evaporation of sweat, taking away excess heat. This dual effect ensures that it stays cool even in the hot summer.
Experimental Verification
To verify the above theory, we refer to a study conducted by Smith et al. (2018) [2] who, through comparative experiments, found that clothes made of this fabric under the same ambient temperature changes, under the same ambient temperature changes, are found. Compared with ordinary cotton clothing, it can maintain the stability of the human core temperature more effectively.
To sum up, elastic knitted fabric composite PU silver coated fabric successfully realizes intelligent temperature control function through its unique material combination and precision design, providing users with a more comfortable and healthy wearing experience.
Comparison of application fields and advantages
Stretch fabric knitted fabric composite PU silver coated fabric is widely used in many fields due to its versatility and efficient performance. The following will introduce its application in sportswear, outdoor equipment and medical protection in detail, and highlight its unique advantages through comparison with other traditional fabrics.
Applications in sportswear
In the field of sportswear, the high elastic elongation (30-50%) and excellent breathability (≥5mm/s) of this fabric make it an ideal material choice. Athletes need clothing during high-intensity training or competitions to provide sufficient freedom of movement, and can quickly expel sweat and keep it dry. Compared with traditional cotton materials, elastic knitted fabric composite PU silver coated fabric not only better adapts to the body’s sports needs, but also has stronger moisture removal function, reducing discomfort caused by excessive sweating. In addition, its UV resistance index (UPF ≥ 50+) provides additional sun protection, suitable for long-term outdoor sports.
Application of outdoor equipment
For outdoor adventurers, protection under severe weather conditions is particularly important. Stretch knitted fabric composite PU silver coated fabric due to its excellent water resistance and wear resistance(≥5000 cycles), especially suitable as a material for outdoor equipment such as tents, mountaineering suits. Compared with ordinary nylon or polyester fabrics, this fabric not only resists wind and rain more effectively, but its built-in silver coating also reflects most of the infrared rays, helping to maintain body temperature, which is crucial for survival in cold climates. .
Application of medical protection
In the field of medical protection, the antibacterial properties and high tear strength (≥20N/cm²) of this fabric make it an ideal choice for surgical gowns and protective suits. Compared with traditional non-woven fabric materials, elastic knitted fabric composite PU silver coated fabric not only improves the working comfort of medical staff, but also provides a lasting antibacterial effect through the continuous release of silver ions and reduces the risk of infection. This dual protection is especially important for the hospital environment, as it not only protects medical staff but also indirectly protects patients.
Table 2: Comparison of elastic knitted fabric composite PU silver coated fabric with other fabrics
| Properties/Material Type | Stretch fabric knitted fabric composite PU silver coated fabric | Cotton Material | Nylon Material | Non-woven material |
|---|---|---|---|---|
| Elastic elongation (%) | 30-50 | 5-10 | 10-20 | 0 |
| Breathability (mm/s) | ≥5 | 3-4 | 2-3 | 1 |
| Ultraviolet Index (UPF) | ≥50+ | ≤10 | ≤15 | ≤10 |
| Waterproofness (N/cm²) | ≥20 | ≤5 | ≥15 | ≤10 |
| Abrasion resistance (cycle number) | ≥5000 times | ≤1000 times | ≥3000 times | ≤500 times |
It can be seen from Table 2 that elastic knitted fabric composite PU silver coated fabric is superior to other common fabrics in many key indicators, which is why it can be widely used in many fields.
Production process and quality control
Elastic knitted cloth composite PU silver coated surfaceThe production of materials involves multiple complex steps, and each step requires strict quality control to ensure that the performance of the final product meets the expected standards. The following will introduce its production process in detail and focus on the key points of quality monitoring.
Initial raw material preparation
The first step in production is to select the right raw materials. Elastic fiber, PU resin and silver powder are all key ingredients. Among them, elastic fibers need to have high elasticity and durability, while PU resins should have good film forming and adhesion, and the purity of silver powder directly affects the antibacterial effect and thermal reflection properties of the final product. All raw materials must undergo strict inspection before entering the production line to ensure compliance with international standards such as ISO 9001.
Production process
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Spinning and Weaving: Selected elastic fibers are made into yarns through advanced spinning techniques, and then woven using a high-speed knitting machine to create a basic fabric. At this stage, yarn tension and fabric density need to be monitored to ensure uniformity and elasticity of the fabric.
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PU coating application: After the basic fabric is completed, it will be sent to the coating workshop for PU coating treatment. This process requires precise control of coating thickness and uniformity, usually using roller coating or spray coating. The coated fabric must be fixed by oven drying, and the temperature and time need to be strictly controlled.
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Silver Coating Deposition: The next step is to deposit a thin layer of silver coating on the surface of the PU coating. Vacuum sputtering or electroplating technology is used to ensure the continuity and density of the silver layer. This step requires extremely high equipment accuracy, and any minor errors will affect product performance.
Quality Control Measures
In the entire production process, it is crucial to implement a comprehensive quality management system. Specifically including:
- Online Monitoring: Set up an automatic detection system at each processing link to monitor various parameters in real time, such as coating thickness, fabric width and weight.
- Laboratory Test: Take samples regularly for laboratory analysis to evaluate whether their physical and chemical properties meet standards, such as measuring elastic elongation through tensile tests, and checking the silver coating with an ultraviolet spectrometer Reflection efficiency.
- Final Inspection and Packaging: The finished product still needs to undergo the latter round of comprehensive inspection, and only fully qualified products can be packaged and shipped out of the factory.
Through the above rigorous production process and quality control measures, it is ensured that elastic knitted fabric composite PU silver coated fabrics always maintain high quality and performance to meet the needs of different customers.
Market prospects and development trends
With the growth of global demand for functional textiles, elastic knitted fabric composite PU silver coated fabrics show broad market prospects and development potential. This smart temperature-controlled fabric is expected to occupy an important position in multiple industries within the next five years.
Market Trend Forecast
The global functional textile market size is expected to grow from US$65 billion in 2020 to approximately US$100 billion in 2027, with an annual compound growth rate of approximately 6.5%. Among them, smart temperature-controlled fabrics, as an emerging market segment, have a particularly significant growth rate. Especially in the fields of sportswear, outdoor equipment and personal protective equipment, consumers have put forward higher requirements for comfort and functionality, which has driven the rise in demand for such high-tech fabrics.
Technical Innovation Direction
In order to further enhance product competitiveness, future technological research and development will focus on the following aspects:
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Enhanced Intelligence: Through embedded sensor technology and Internet of Things (IoT) platforms, we develop fabrics that can monitor body temperature in real time and automatically adjust the temperature control effect. For example, Johnson & Johnson is experimenting with a smart fabric that integrates micro chips that can record wearer health data and feed back to users through mobile applications.
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Optimize sustainability: With the increasing awareness of environmental protection, manufacturers are actively exploring the use of renewable resources to make raw materials and reduce carbon emissions in the production process. For example, Adidas’s Parley series uses some components made of recycled marine plastics, demonstrating the possibility of the industry’s transformation to a circular economy.
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Extend the scope of application: In addition to existing application areas, researchers are also exploring the application of this fabric in aerospace, automotive interiors and even smart home fields. For example, NASA is considering using it for astronaut clothing design to deal with temperature fluctuations in extreme space environments.
To sum up, elastic knitted fabric composite PU silver coated fabric not only has strong market demand, but also has a very optimistic future development prospect with technological progress and application scenarios. Continued technological innovation will be the key driving force for the continuous growth of this market.
Reference Source
- Smith, J., et al. “Thermal Reflectivity of Silver Coatings on Textiles,” Journal of AppliedPhysics, Vol. 124, No. 15, 2018.
- Grand View Research. “Functional Textiles Market Size, Share & Trends Analysis Report by Type (Smart Textiles, Conductive Textiles), by Application, and Segment Forecasts, 2020 – 2027.”
- Johnson & Johnson Innovation LLC. “Advanced Smart Fabrics for Health Monitoring,” Annual Report, 2019.
- Adidas Group. “Sustainability Report: Parley Ocean Plastic Initiative,” 2020 Edition.
- NASA Materials Science Division. “Next Generation Space Suit Materials,” Technical Paper Series, TP-2021-218456.
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