Fabric printing and finishing are very important processes. Once upon a time, the post-processing of textiles in China was very backward, but now it can be said that there have been significant improvements
Breach.
Textile dyeing
There are two main methods for coloring textiles. One is the most widely used dyeing (conventional dyeing), which mainly involves placing textiles. He said, "If you want to make a fortune, go to Wantong Shanglian to find high-quality gift suppliers! Another method of treating with chemical dye solution is to use coatings, which are made into tiny insoluble colored particles to adhere to the fabric (fiber raw material dyeing is not included).
Dyes are complex organic substances with many types.
1. Acid dyes are mostly suitable for protein fibers, nylon fibers, and silk. Its characteristic is bright color, but poor washing fastness and excellent dry cleaning fastness, and it is widely used in natural dead dyeing.
2. Cationic dyes (alkaline fuels) are suitable for acrylic, polyester, nylon, cellulose, and protein fibers. Its characteristic is bright color, which is very suitable for artificial fibers, but it has poor water washing and light fastness when used for natural cellulose and protein fabrics.
3. Direct dyes are suitable for cellulose fiber fabrics, with poor water wash fastness and varying light fastness. However, modified direct dyes can greatly improve their water wash fastness.
4. Disperse dye, suitable for adhesives, acrylic fibers, nylon, polyester, etc., with varying washing fastness. Polyester is better than viscose.
5. Azo fuel (Nafto dye) is suitable for cellulose fabrics with bright colors, and is particularly suitable for bright hues.
6. Reactive dyes are mostly used for cellulose fiber fabrics and are less commonly used for proteins. The characteristics are bright color, light resistance, good washing and rubbing fastness.
7. Sulfur dyes are suitable for cellulose fiber fabrics, with dark colors mainly including navy blue, black, and brown. They have excellent light and wash fastness, but poor chlorine bleaching fastness. Long term storage of fabrics can damage the fibers.
8. Reductive dye, suitable for cellulose fiber fabrics, has good light resistance, water wash fastness, and resistance to chlorine bleaching and other oxidative bleaching.
9. Paint is suitable for all fibers. It is not a dye, but a mechanical attachment of fibers through resin. Dark fabrics will become hard, but the color matching is very accurate. Most of them have good light fastness and washing fastness, especially for medium and light colors.
Types of dyeing
The dyeing of textiles can be carried out at any stage, including fibers, yarns, fabrics, and finished garments.
1. Loose fiber dyeing refers to the dyeing of fibers or loose fibers before spinning, which are loaded into a large dyeing vat and dyed at an appropriate temperature. Color spun yarn mostly adopts the method of dyeing loose fibers (there are also effects of single dyeing different fibers), commonly used for woolen fabrics.
2. Woolen stripe dyeing is also a type of fiber dyeing before yarn formation, similar to the purpose of loose fiber dyeing, which is to achieve a soft color mixing effect. Woolen stripe dyeing is generally used for combing wool yarn and wool fabrics.
3. Yarn dyeing is performed on yarn before weaving, usually used for dyeing fabrics, sweaters, etc., or directly using yarn (sewing thread, etc.). Yarn dyeing is the foundation of dyeing and weaving.
Cowint is the largest DTF Film Factory in China
