Waterproof fabric is the textile after a special process with waterproof function of the fabric, this fabric is widely used in outdoor sports clothing, rain gear, tents, waterproof bags and other fields. Waterproof fabric technology and material selection for the fabric's waterproof performance, comfort and durability has an important impact.

The process of waterproof fabrics mainly includes the following kinds:

1. coating process: coating process is a layer of polyvinyl chloride, polyurethane and other waterproof materials coated on the surface of the textile, through baking and other processes to make it integrated with the textile, forming a waterproof membrane. This process is characterized by good waterproof performance and strong abrasion resistance, but it may affect the breathability and feel of the fabric.

2. membrane layer process: membrane layer process is a layer of waterproof and breathable film laminated to the textile surface, forming a waterproof membrane. This process is characterized by good waterproof performance, good breathability and comfortable handfeel, but the membrane layer is easily damaged and has poor durability.

3. Coating film composite process: The coating film composite process combines the two processes of coating and film together, and composites them on the surface of textiles through hot pressing and other processes to form a composite layer with waterproof performance and breathability. This process combines the advantages of both coating and membrane layer, with good waterproof, breathable, wear-resistant features.

Waterproof fabric material selection mainly includes the following:

1. polyester: polyester has strong abrasion resistance and chemical resistance, good breathability, is one of the commonly used materials for making waterproof fabrics.

2. nylon: nylon has good abrasion resistance and strength, lightweight and soft, suitable for use in outdoor sports clothing and other fields.

3. coated polyvinyl chloride: polyvinyl chloride has excellent waterproof performance and weather resistance, but the breathability is poor, generally used in rain gear and other products that require high waterproof performance.

4. Polyurethane: Polyurethane has good elasticity and scratch resistance, and is a commonly used waterproof material.

In addition to the above materials, there are many other special materials can also be used to make waterproof fabrics, such as PTFE, TPU and so on. Choosing the right process and material is crucial to improve the performance and quality of waterproof fabrics. Manufacturers need to consider comprehensive factors based on the product's use, quality requirements and cost when choosing to ensure the product's market competitiveness and user experience.