What is Raincoat's waterproofing technology and effect in coating waterproofing?

The coating waterproofing technology of raincoats is the key to their waterproof performance, which is mainly achieved by applying different types of coatings to the surface of the fabric. The following is a detailed introduction to the coating waterproofing technology and its effect analysis.

Polyurethane coatings are widely used in raincoats because of their good elasticity and flexibility. PU coatings are able to form a sealing film to prevent moisture penetration while maintaining a certain degree of breathability. PU coatings have good waterproof performance and are suitable for daily use and light rainfall. Its breathability prevents raincoats from being too stuffy in humid environments, increasing the comfort of wearing.

PVC coatings have excellent waterproof properties and are usually used for raincoats that require high waterproofing. PVC materials are thicker and provide good physical protection. Although PVC coatings can effectively block moisture, their breathability is poor, and long-term wearing may cause internal moisture, which is suitable for short-term exposure to heavy rainfall environments.

The coating application method usually includes dipping, spraying or coating. The uniformity and thickness of the coating directly affect the waterproof effect. Thick coatings generally provide better waterproofing, but may increase the weight and rigidity of the clothing.

To further enhance the waterproof performance, many raincoats use heat-sealed seam technology. This means using heat tape to seal the seams and prevent water from seeping through them. This technique greatly improves the waterproof performance of raincoats, especially when exposed to rain for a long time.

The waterproof effect of raincoats is usually evaluated by a "water pressure" test, which measures the height of the water column that the raincoat can withstand. Generally, raincoats with a water pressure value of more than 1000 mm are considered to have good waterproof performance, while those with more than 3000 mm are suitable for use in bad weather.

For daily travel or light rainfall, raincoats with PU coating are usually sufficient, as they can remain comfortable due to their good breathability.

For outdoor activities such as mountaineering and hiking, it is recommended to choose raincoats with high water pressure values, preferably PU or PVC coatings with heat-sealed seams. Such raincoats can provide better protection in heavy rainfall or complex weather conditions.

The maintenance of coated raincoats is very important, and the wrong cleaning method may affect the performance of the coating. It is recommended to wash by hand with a mild detergent, avoid using detergents containing bleach, and do not use a dryer to avoid damaging the coating. Check the coating regularly for wear and tear, and reapply with a special waterproofing agent if necessary to restore its waterproof effect.

Coating waterproofing technology plays a vital role in raincoats. The correct material selection and process application can significantly improve the waterproof performance and comfort of raincoats. Whether it is daily use or outdoor adventure, understanding the characteristics and effects of coating waterproofing will help consumers choose the right raincoat to cope with different weather challenges.