English 
650# Fangzhou Road, Luhe Borough, Nanjing city, Jiangsu province, China.
Views: 0 Author: Site Editor Publish Time: 2024-07-15 Origin: Site
Outdoor activities often expose gear to the elements, leading to common misconceptions about the effectiveness of waterproof jackets and hiking boots. Here's a deeper look into why these items may not always keep you dry and the distinct differences between waterproof and water-resistant technologies.
Water-resistant, also known as water-repellent, refers to a type of waterproof agent or coating applied to fabrics. A notable example is the Durable Water Repellent (DWR) treatment, which outperforms standard water repellent (WR) treatments. This technology coats the fabric with a layer of ultra-fine "needles," creating a surface that causes water droplets to bead and roll off, mimicking the hydrophobic effect seen on lotus leaves.
Despite its efficacy, the water-resistant property is not infallible. The pores between fabric fibers can still allow air and moisture to pass through. Over time, or if the "needle bed" is flattened, the fabric's water-resistant capabilities can significantly decrease, leading to absorption and saturation. Although diminished through washing and wear, these properties can be restored to some extent.
In contrast, waterproofing involves a breathable membrane laminated with other fabrics to achieve an impermeable barrier. Unlike water-resistant treatments, waterproof breathable membranes are designed to withstand washing and extended use without degradation.
Common waterproof membranes are typically sandwiched between two layers of fabric. For example, Gore-Tex jackets absorb water on the outer fabric, becoming heavier, whereas technologies like OutDry Extreme laminate the membrane on the outermost layer, preventing the garment from absorbing water and feeling heavier.
While both technologies aim to resist water penetration, they are not mutually exclusive and serve different purposes. The fabric's ability to resist water can be quantified by measuring its hydrostatic head, often indicated by values like 2000mm or 3000mm in product descriptions.
Water-resistant features are commonly applied to the outer layers of down jackets and sleeping bags, with the down filling itself sometimes treated to repel water. This hydrophobic down dries quickly and maintains loft and warmth in damp conditions. Softshell jackets and lower-priced hiking boots often rely solely on water-resistant treatments, offering limited protection against moisture. For complete waterproofing, especially in items like hiking packs, additional measures like rain covers are necessary.
Many modern jackets utilize both technologies, combining the quick shedding of water through water-resistant outer layers with the absolute dryness provided by internal waterproof membranes.
Distinguishing between waterproof and water-resistant technologies is essential for selecting appropriate outdoor gear. While water-resistant treatments repel water to a degree, they do not guarantee dryness under all conditions. Waterproof technologies offer a more robust solution, ensuring protection against heavy downpours. However, the effectiveness of both can diminish over time but can often be rejuvenated with proper care. By understanding the capabilities and limitations of each, outdoor enthusiasts can make informed choices that enhance their experience and safety in the great outdoors.