en343 透气标准 -回复

en343 透气标准-回复
En343 is a standard that governs the breathability of protective clothing. In this article, I will delve into the different aspects of the standard and explain its significance in ensuring comfort and safety for wearers.
The En343 standard, titled "Protective clothing - Protection against rain," was developed by the European Committee for Standardization (CEN). It specifies two parameters for breathability –water vapor resistance and water penetration resistance. These criteria are crucial in determining the functionality of protective clothing in various weather conditions.
Water vapor resistance measures the ability of the fabric to allow moisture to escape from the body. It is determined by the measurement of the Resistance to Evaporative Heat Transfer (RET) value. A lower RET value indicates higher breathability, meaning that the fabric allows moisture to escape more easily. The EN343 standard specifies different classes for water vapor resistance, ranging from Class 1 (RET < 20) to Class 3 (RET > 40).
Water penetration resistance, on the other hand, measures the
ability of the fabric to prevent water from penetrating through the material. This parameter is crucial, especially for garments intended to protect wearers from rain or wet environments. It is determined by the measurement of the Water Resistance (WR) value. The
EN343 standard also specifies different classes for water penetration resistance, ranging from Class 1 (WR 8000) to Class 3 (WR 10000).
To meet the En343 standard, manufacturers must subject their protective clothing to rigorous testing in accredited laboratories. These tests involve exposing the fabric to artificial rain, simulating different levels of rainfall intensity. The clothing's water penetration resistance is evaluated by measuring the amount of water that can penetrate the fabric after a specific period of time. Similarly, the water vapor resistance is determined by evaluating the RET value using a sweating thermal manikin or a specific test apparatus.
The significance of the En343 standard lies in ensuring the comfort and safety of wearers. Protective clothing with high breathability allows moisture to escape, preventing the buildup of sweat and maintaining a comfortable microclimate inside the garment. This is particularly important for workers engaged in physically
demanding activities or in challenging weather conditions. When moisture accumulates inside the garment, it can lead to discomfort, reduced mobility, and even the risk of hypothermia in cold environments.
Moreover, if protective clothing does not meet the En343 standard's water penetration resistance criteria, it can fail to protect wearers from rain or wet environments. Water ingress can lead to wetness, thereby compromising the thermal insulation properties of the clothing and increasing the risk of cooling down the body. Additionally, wet clothing can lead to chafing, discomfort, and even skin irritation.
The En343 standard is not only applicable to professional workwear but also to outdoor clothing for recreational activities. Whether it is hiking, mountaineering, or any other outdoor sport, clothing that meets the En343 standard ensures that wearers stay dry and comfortable, even in adverse weather conditions.
While the En343 standard is essential in determining the breathability of protective clothing, it is important to note that it is just one aspect of a comprehensive evaluation of performance and
suitability. Other factors such as durability, flexibility, and compatibility with other protective equipment should also be considered.
In conclusion, the En343 standard plays a vital role in determining the breathability of protective clothing. By specifying criteria for both water vapor resistance and water penetration resistance, it ensures that the clothing offers comfort and protection in various weather conditions. Manufacturers and consumers alike must prioritize this standard to obtain high-quality protective clothing that meets the necessary performance requirements.。