Outdoor fabrics are waterproof and repellent

When traveling outdoors to cope with changing weather, waterproof jackets, pants and even shoes are very important. However, I believe many people are not particularly clear about the two concepts of waterproof fabrics and water-repellent fabrics. Faced with the increasing number of people claiming that their products are waterproof When choosing a functional outdoor brand, you may have some doubts about which fabrics are used in clothing that are truly waterproof. Why do products that already use waterproof fabrics emphasize that they have been treated with water-repellent treatment? �小编就为大家进行一个简单的区别介绍� �<br /
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Fabric waterproofing usually refers to the waterproof functionality of the fabric itself. After the initial compact fabrics and coated waterproof fabrics, waterproof fabrics are now mainly pasted film fabrics. The key to exerting the waterproof effect lies in the materials used in the fabrics. functional films �<br /
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The adhesive film-type fabrics that initially occupied the largest market share are basically made of PTFE (polytetrafluoroethylene) films. This type of film is a microporous film. The waterproof performance is expressed by the water pressure value it can withstand, which is not 100 % waterproof, and according to European environmental research, PTFE materials can produce environmentally harmful compounds when manufactured, landfilled and incinerated. �近些年，环保界对PTFE材料的质疑声音越来越多，部分国家开始限制使用PTFE材料� Landfilling and incineration are the main methods of domestic waste treatment in the world, and these two treatment methods will produce perfluorinated compounds when processing PTFE materials. Fluorides will pollute the atmosphere and land. Due to the long period of natural decomposition of fluorides, so Environmental pollution caused by PTFE materials will be long-lasting and long-lasting In comparison, another kind of film that has been adopted by more and more brands in recent years – non-porous hydrophilic film is not only non-porous itself and 100% waterproof, making the product's waterproof performance more reliable, some non-porous hydrophilic films are more It has been updated because of its environmentally friendly and harmless characteristics. Industry insiders are optimistic that SympaTex? film, which is a molecular compound of polyether and polyester, contains absolutely no PTFE (polytetrafluoroethylene) components, can directly contact the skin, is harmless to the body, and can be recycled like PET plastic bottles. Recycle �<br /
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Usually, these fabric manufacturers with film technology do not directly sell films to clothing brands. They use the pasting process to combine the film with other fabrics to form a composite fabric (as shown in the picture above, the middle layer is a film). The brand only needs Purchase these composite fabrics to directly make waterproof clothing products The fabrics used to combine with the film are not waterproof themselves, such as polyester fiber, nylon, etc., so when we wear waterproof clothing and encounter wet weather, we will see water seeping into the clothing, just like clothing made of ordinary fabrics. , but the inner layer of the clothing is dry and no water seeps in. This is the role of the waterproof film in the middle of the composite fabric. �<br /
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What we see when water disperses into small droplets on clothing and then slides off (as shown in the picture above) is usually because the fabric used has been treated with water-repellent treatment. The anti-repellent treatment is actually a special layer covering the surface of the fabric. Treatment, usually adding DWR (Durable Water Repellency) when finalizing the finished fabric, to obtain durable water repellent properties �使用DWR涂层的目的是水在滴落到服装表面的时候可以形成小水珠或者直接从服装表面滑落从而阻止面料吸收水分，同时，也使得附着在服装表面的油污等更容易被除去� Most waterproof clothing uses this kind of DWR water-repellent treatment. The advantage of using DWR treatment is that the surface layer of the clothing does not absorb moisture, thereby ensuring that the waterproof fabric can achieve good breathability, so that the human body can wear it very well. feel �<br /
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　　DWR技术从相关性能进行分类的话，一般可以分为两种类型：含氟化物类DWR及无氟化物类DWR� Fluoride-containing DWR refers to DWR surface treatment based on fluoropolymers, such as PFOA (perfluorooctanoate), which is currently widely used in the clothing industry. Although it can provide a high degree of water-repellent, oil-proof, and anti-fouling properties, fluoride Hydroxide elements are not easily degraded and can be released into water sources and the atmosphere through various factors such as heat, water immersion, ultraviolet rays, etc., causing harm to humans and other animals and plants. �目前科学家们就已经在世界各地的人类和动物血样标本中，抽检出发现这种化合物的存在� �虽然迄今为止暂时还没有依据指出PFOA致癌风险以及针对PFOA限制的相关法规，但是德国联邦环境局（UBA）已经提出了将PFOA列入对生殖系统有毒害嫌疑的化学物质列表之中� �<br /
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　　目前常见不含氟化碳的DWR：蜡，石蜡，聚氨基甲酸乙酯，树枝状聚合物或硅氧烷等来取代碳氟化合物为基础元素作为户外产品的防泼水恢复用剂。而自SympaTex?从2008年中旬开始，就已经开始为消费者提供一款环保、无氟化碳化合物的DWR防泼水产品。这种产品是与合作伙伴鲁道夫化学共同开发的针对纺织品的环保产品：BIONICFINISHECO?。其实，SympaTex?也是第一家对纺织品进行无氟化碳类环保DWR防泼水技术产品研发的企业。
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　　在美国EPA2010/2015年PFOA监管程序，主要的化学品制�Manufacturers, including DuPont and Clariant, have also voluntarily committed to completely eliminating PFOA toxic chemicals in production by 2015 and replacing them with more environmentally friendly and low-emission products.
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It is worth mentioning that DWR water-repellent treatment is not permanent, but correct washing and ironing methods can extend the effect of DWR water-repellent treatment. And if your clothing loses its water-repellent effect, don’t worry. Currently DWR coating restorers are available on the market �<br /
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So you can see that clothing using waterproof fabrics can basically meet the functional requirements of 100% waterproof (PTFE film products under certain conditions, non-porous hydrophilic membrane under any conditions), but in order to obtain a more comfortable wearing experience , so that these waterproof fabrics can exert a good breathable effect, DWR water-repellent treatment is also necessary. �<br /
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In addition, the complete waterproofing of clothing is also closely related to the waterproof performance of the taped strips and zippers used at the seams, because the waterproof and water-repellent properties of the fabric refer to the functionality of the fabric itself, the needle holes at the seams or the gaps in the zippers Clothes cannot be 100% waterproof without treatment �</p