Jiangsu Textile Research Institute Inc.

1. Water-repellent, oil-repellent, easy-to-remove textiles

1. The difference between water-repellent finishing and waterproof finishing:

Waterproof finishing - means that the fabric is difficult to wet, penetrate and absorb water. Through waterproof finishing, a continuous impermeable and water-insoluble film is coated on the surface of the fabric to prevent water from penetrating into the interior of the fabric and making it difficult for air and water vapor to pass through.

Water-repellent finishing - refers to changing the properties of the fiber surface so that the hydrophilicity of the fiber surface becomes hydrophobic, while there are still a large number of gaps between the fibers and the yarns in the fabric. In this way, the fabric is both breathable and not easily wetted by water. Water permeability will only occur when the rain is heavy, similar to the water-repellent nature of lotus leaves. Oil repellency is similar to water repellency, which means that the fabric is not easily soaked by oil and can prevent oil and oil stains from contaminating the fabric.

2. Easy to clean and decontaminate：

Easy stain removal finishing - refers to the ability of the finished fabric to shed dirt easily and prevent dirt from re-staining the fabric during washing. Compared with natural fibers, chemical fibers such as polyester have high strength, good cloth texture, bright colors, cheap prices, and easy processing. However, because polyester is a hydrophobic fiber, although fiber manufacturers continue to improve the shape and structure of the fiber, it is still difficult to achieve breathable, moisture-permeable, moisture-absorbing and quick-drying properties, and it has poor stain resistance, anti-fouling, and anti-static properties. It is easy to absorb dust when wearing, and the static electricity generated by friction makes the clothes close to the skin, giving people an uncomfortable feeling.

With the development of hydrophilic and easy-to-remove finishing agents, this kind of finishing can absorb the sweat discharged by the human body to the surface of clothing and evaporate quickly, keeping people dry and comfortable. It is also easy to remove and prevent stains. , anti-static and other properties, which can keep clothes as clean as new for a long time.

Production method: Most of the fabrics are dyed and finished.

2. Non-iron and anti-wrinkle textiles

No-iron anti-wrinkle finishing is also called durable pressing, shape memory or permanent shaping finishing - it is to make the fabric through resin finishing to achieve the purpose of anti-wrinkle, anti-shrinkage, durable pressing, and at the same time give it the characteristics of comfortable wearing. The non-iron finishing of fabrics or clothing is mostly used in woven products, and it is also used in a small amount in knitted textiles.

No-iron anti-wrinkle finishing textiles have the following characteristics: 

• A. It can give the fabric good smoothness and anti-wrinkle shape retention; 

• B. No ironing after washing; 

• C. Give the fabric good anti-shrinkage properties; 

• D. Improve the color fastness of fabrics and reduce fluffing and surface deformation.

Production method: Liquid ammonia mercerization and alkaline mercerization are combined with a no-iron anti-shrinkage agent for finishing, and then the blanket is steamed and anti-shrinkage treated.

3. Antistatic Textiles

Static electricity occurs in various textiles during mutual contact and friction, but different fibers show different electrostatic phenomena. Natural fibers such as cotton, wool, linen, and silk, as well as regenerated cellulose fibers such as Tencel and Modal, will hardly cause static electricity during processing and consumption. Synthetic fibers such as polyester, acrylic, and nylon show strong staining when worn. In people's pursuit of environmentally friendly, ecological, healthy and comfortable textiles, various antistatic textiles have also emerged.

Methods to prevent static electricity include: preventing the generation of static electricity and conducting the generated charge.

Antistatic processing methods for textiles usually include: 

• A. Finishing fabrics with antistatic finishing agents; 

• B. Fiber grafting modification with the purpose of improving fabric hygroscopicity, blending and interweaving with hydrophilic fibers; 

• C. Blended or inlaid conductive fibers