1. Why should the yarn be waterproof?

The demand for waterproof yarns does not account for much of the waterproof finishing market. It is mainly used for waterproof sewing threads, such as tents, outdoor jackets, and waterproof clothing. There is also a type of fly-woven shoe material. The upper has the properties of water and oil repellent and anti-fouling.

2. Is there any special attention to the yarn for waterproofing? Xinshengyang's 13-year application engineer summarized the following points:

1. Before waterproofing, polyester yarn should be cleaned by reduction, and the floating color and surfactant on the surface of the yarn should be washed clean. It is recommended to wash two more cylinders of water to ensure that the yarn is clean.

2, can not add softener, smoothing agent and other silicone oil.

3. It is best to do the reduction and cleaning of the cheese, then hang it out for dehydration, and then do waterproofing, so that the effect will be good.

4. Before waterproofing, the dye vat and auxiliary vat should be cleaned and cleaned to avoid residual silicone oil, dyes and surfactants in the pipeline, which will affect the waterproof effect.

5. In the auxiliary vat, turn on the waterproofing agent, and then pump it into the dye vat.

3. How to formulate the yarn waterproofing process?

The yarn waterproofing generally refers to the cheese yarn. The cheese yarn itself is relatively tightly wound, and it is difficult for the waterproof agent to penetrate into the inner layer, which may lead to inconsistent waterproofing effects inside and outside. So how to solve this problem? Based on the actual situation of the factory, Xinshengyang's engineer suggested raising the water temperature of the waterproof working fluid in the tank to 60 degrees, and then opening the lift to allow the waterproof working fluid to flow for 20-30 minutes to increase the permeability, while allowing the inside and outside to flow. All layers of yarn are evenly adhered to the waterproofing agent, and then dehydrate the tank. Drying temperature and time: 100-140 degrees, baking for 2-4 hours.

4. What kind of yarn is suitable for waterproof finishing?

The yarns are generally cotton yarn, polyester yarn and nylon yarn. There is no problem in waterproof finishing of yarns of these materials, especially polyester and nylon synthetic fibers, which are easier to do waterproof finishing.