How to Make Outdoorwear Highly Waterproof?

author: Lily

2024-10-09

1. Principle of waterproof fabrics for jackets

Special Coating Technology: Waterproof fabrics for jackets generally use special coating technology such as PTFE (polytetrafluoroethylene) or PU (polyurethane).

PTFE coating, with its extremely low surface energy and microporous structure, effectively prevents water penetration while maintaining good breathability.

PU coating, is a hydrophilic fabric that is soft, elastic, strong and wear-resistant, but care needs to be taken to avoid hydrolysis.

DWR treatment: The surface of the jacket is also usually treated with a DWR (durable water repellent) coating, which keeps the outer layer of the jacket dry by allowing moisture to form droplets on the surface of the fabric and slide off, i.e. the lotus leaf effect.

2. The way how to realize the waterproofness

Waterproof and Breathable Membrane: The waterproof and breathable materials used in high-end jackets, such as Gore-Tex and eVent, are E-PTFE breathable and waterproof membranes. This microporous membrane has a very small pore size, which effectively prevents raindrops from entering while not impeding the evaporation of sweat, keeping the body dry.

Composite Fabrics and Taped Seams: Jackets are usually made from waterproof and breathable membranes and composite fabrics combined with other materials. In addition, for a jacket to be fully waterproof, all seams must be taped, i.e. heat-sealed, to stop water seeping through the seams.

3. Evaluation and selection of waterproof jackets

Waterproof rating: The degree of waterproofness of a jacket depends on its waterproof rating, usually expressed in millimeters. The higher the rating, the longer the fabric's waterproofing lasts. Based on the waterproof rating, consumers can choose jackets that are suitable for different weather conditions.

Try on and check: When purchasing a jacket, consumers should try on and check the waterproofness of the jacket. Make sure the cuffs are long enough to cover the upper part of the back of the hand to prevent rainwater from seeping in and soaking the arm. Also, check that the seams of the jacket are taped to ensure that it is completely waterproof.

4. Maintenance of waterproof jackets

Regular Cleaning and Repairing of DWR Coating: The DWR coating can deteriorate due to wear and tear, dirt, body oils, and prolonged use, resulting in reduced waterproof performance. Therefore, consumers should clean their jackets regularly and repair the DWR coating with a professional waterproofing spray to maintain the waterproof performance of the jacket.

Avoid improper use and storage: When using the jacket, avoid prolonged exposure to high temperatures or humid environments to avoid damaging the fabric and waterproof layer. When storing, the jacket should be folded neatly and placed in a dry and ventilated place to avoid direct sunlight and extrusion deformation.

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