Overview of TPU waterproof membrane composite knitted fabric
TPU (thermoplastic polyurethane) waterproof film composite knitted fabric is an innovative textile that combines high-performance materials and advanced production processes, and is widely used in the sportswear field. This material is made by combining TPU film with knitted fabrics, which not only retains the flexibility and comfort of the knitted fabric, but also gives it excellent waterproof, breathable and wear resistance. In modern sportswear design, functionality has become one of the important criteria for consumers to choose, and TPU waterproof membrane composite knitted fabric is the key technology to meet this demand.
From a technical point of view, TPU film has excellent elasticity, chemical resistance and tear resistance, and can achieve the design of microporous structures, thereby providing good breathability while ensuring waterproofing performance. This feature makes TPU waterproof membrane composite knitted fabric an ideal material for outdoor sportswear, running equipment and fitness clothing. In addition, the adjustable thickness and multi-layer composite capability of the TPU film also enable it to adapt to the needs of different application scenarios, such as lightweight design or high-strength protection.
In terms of market applications, TPU waterproof membrane composite knitted fabric is highly favored for its versatility and environmentally friendly properties. It not only meets the athlete’s requirements for comfort and durability, but also effectively cope with the needs of use in severe weather conditions. According to the global textile market analysis report, the market size of functional textiles is expected to continue to grow in the next few years, and the proportion of TPU composite materials will be further expanded. This shows that TPU waterproof membrane composite knitted fabric is not only the core technology in the current sportswear field, but also one of the trends in the future industry development.
To sum up, TPU waterproof membrane composite knitted cloth has played an irreplaceable role in improving the functionality of sportswear with its unique physical characteristics and wide application prospects. The following will discuss in detail in terms of product parameters, production processes and advantages.
Detailed explanation of product parameters of TPU waterproof membrane composite knitted fabric
TPU waterproof membrane composite knitted fabric is one of the core materials of functional textiles, and its product parameters directly affect its performance and scope of application. The following are the main parameters and their specific values of the material:
1. Basic physical parameters
| parameter name | Unit | Typical value range |
|---|---|---|
| Plant density | g/m² | 150-300 |
| Thickness | μm | 80-200 |
| Tension Strength | N/cm | 30-60 |
| Elongation of Break | % | 300-600 |
Plant density and thickness are key indicators that determine the weight and feel of TPU waterproof film composite knitted fabric. Generally, thinner TPU films are suitable for lightweight sportswear, while thicker films are more suitable for scenarios where higher protection performance is required. Tensile strength and elongation at break reflect the mechanical properties of the material, ensuring that it is not prone to damage during dynamic movement.
2. Functional parameters
| parameter name | Unit | Typical value range | Remarks |
|---|---|---|---|
| Waterproof Grade | mmH₂O | ≥10,000 | Complied with international standards |
| Moisture permeability | g/m²/24h | 5,000-10,000 | Measure breathable performance |
| Abrasion resistance | Number of loops | >50,000 | ASTM D3884 |
| UV Anti-UV Index | UPF | ≥50+ | Providing sun protection |
The waterproof level is an important indicator for measuring the ability of TPU waterproof membrane composite knitted cloth to resist external moisture penetration. The higher the value, the better the waterproof effect. The moisture permeability reflects the material’s ability to allow water vapor to pass through, which is essential to keep the wearer dry. Wear resistance and UV resistance index further enhance the durability and health protection of the material.
3. Environmental performance parameters
| parameter name | Description | Standard basis |
|---|---|---|
| Degradability | Some TPU materials can be processed through biodecomposition | EN ISO 14855 |
| VOC emissions | ≤5 mg/m³ | REACH regulations |
| Recycling and Utilization Rate | ≥90% | Life Cycle Assessment |
Environmental performance parameters reflect the contribution of TPU waterproof membrane composite knitted fabric in sustainable development. In recent years, with the increasing global attention to environmental protection, the research and development direction of such materials has also begun to tilt towards greening and recycling.
The above parameters provide scientific basis for the practical application of TPU waterproof membrane composite knitted fabric and lay a solid foundation for its wide application in the field of sportswear.
Analysis of the production process of TPU waterproof membrane composite knitted fabric
The production process of TPU waterproof membrane composite knitted fabric is a highly sophisticated and complex process involving multiple critical steps to ensure the quality and functionality of the final product. The following is a detailed introduction to its main production links:
1. Material preparation stage
Before production begins, high-quality basic materials must be carefully selected. TPU films must have high transparency, excellent elasticity and chemical resistance, while knitted fabric substrates should have good softness and breathability. This phase also involves pretreatment of raw materials such as cleaning, drying and sizing to ensure consistency in subsequent processing.
2. TPU film preparation
The preparation of TPU films uses extrusion molding technology, a method of heating TPU particles to a molten state and extruding them through a mold to form a film. During this process, temperature control is extremely important. Too high or too low will affect the quality of the film. The ideal processing temperature range is typically between 190°C and 220°C. In addition, to improve the performance of the film, specific functional additives, such as anti-ultraviolet or antibacterial agents, may be added.
3. Composite process
Composite process is the core link in the production of TPU waterproof film composite knitted fabric. There are currently two common methods: hot pressing composite and adhesive composite. The hot pressing composite directly combines the TPU film with the knitted cloth substrate through high temperature and high pressure. This method does not require additional adhesive, and is environmentally friendly and efficient. Adhesive composites use special adhesives to enhance the bonding between the two layers of materials, which is suitable for certain special purpose products.
4. Post-organization and testing
After the composite is completed, the product needs to undergo a series of post-organization processes, including shaping, tailoring and surface treatment, to optimize its appearance and feel. Subsequently, a comprehensive quality inspection is carried out to ensure that each batch of products meets strict international standards. These tests cover waterproof performance testing, breathability evaluation, and physical and mechanical performance verification.
Through the above detailed production process, it can be ensured that the TPU waterproof membrane composite knitted fabric not only has excellent functionality, but also has extremely highReliability and consistency meet the high standards of the modern sportswear market.
Analysis of the advantages of TPU waterproof membrane composite knitted fabric
TPU waterproof membrane composite knitted fabric shows significant functional and environmentally friendly advantages compared to traditional textile materials. First, in terms of functionality, the unique molecular structure of the TPU material imparts excellent waterproofing properties. According to standard tests from the American Association of Textile Chemists and Dyeers (AATCC), TPU waterproof membrane composite knitted fabrics can reach waterproofing levels of more than 20,000mmH₂O, which is much higher than ordinary waterproof fabrics. This feature is particularly important for outdoor sportswear, especially in rainy and snowy weather conditions, which can effectively prevent external moisture from penetrating and keep the wearer’s body dry.
Secondly, TPU materials also show excellent breathability. Its microporous structure allows water vapor to pass through without liquid water entering, and this one-way wet guide function greatly improves comfort during exercise. Research shows that the moisture permeability of TPU waterproof membrane composite knitted cloth can reach more than 8,000g/m²/24h, which means that even sweat produced during high-intensity exercise can be quickly discharged to avoid discomfort caused by moisture. In addition, the high elastic recovery and wear resistance of TPU materials also make it ideal for making sportswear that requires frequent stretching and friction.
From the environmental perspective, TPU waterproof membrane composite knitted fabric also has obvious advantages. Compared with traditional PVC materials, TPU does not contain plasticizers and halogen, reducing potential harm to the human body and the environment. Moreover, TPU materials can be reused through physical recycling or chemical degradation, which is in line with the concept of modern circular economy. According to the European Chemicals Agency (ECHA), the life cycle carbon footprint of TPU materials is about 30% lower than other synthetic fibers, making it a more sustainable option.
To sum up, TPU waterproof membrane composite knitted fabric not only surpasses traditional materials in functionality, but also makes positive contributions to environmental protection, pointing out the direction for the future development of the sportswear industry.
Application cases of TPU waterproof membrane composite knitted cloth in sportswear
The application of TPU waterproof membrane composite knitted cloth in sportswear has achieved remarkable results, especially in the professional sports field, and its excellent performance has been fully verified. For example, a well-known mountaineering brand has used TPU waterproof membrane composite knitted fabric in its new windproof jacket, which performed well in extreme weather conditions and successfully helped several climbers complete the Everest climbing mission. According to a study by Journal of Textile Science & Engineering, the material has an astonishingly 30,000mmH₂O level, far exceeding the industry average and provides reliable protection for climbers.
In addition, in the field of running clothing, TPU anti-agingWater film composite knitted fabric is also shining. A leading sports brand has launched high-performance running pants made of this material, with moisture permeability up to 12,000g/m²/24h, keeping athletes dry all the time during prolonged high-intensity exercise. According to Sports Technology International, professional marathon players participating in the test generally reported that these pants are not only light and close to the body, but also effectively reduce the accumulation of heat during exercise and improve overall performance.
These practical application cases not only show the outstanding functional advantages of TPU waterproof membrane composite knitted fabric, but also prove its huge potential in improving the overall performance of sportswear. Through continuous technological innovation and optimization, this material is gradually changing the traditional appearance of sportswear and bringing better experience to athletes.
Reference Source
- American Association of Textile Chemists and Colorists (AATCC). Standard Test Method for Water Resistance.
- European Chemicals Agency (ECHA). Environmental Profile of Thermoplastic Polyurethane.
- Journal of Textile Science & Engineering. Performance Evaluation of Functional Fabrics in Extreme Conditions.
- Sports Technology International. Advanceds in Athletic Wear Materials.
- ASTM International. Standard Test Methods for Abrasion Resistance of Textile Fabrics.
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