Types and Characteristics of Textile Coating and Finishing

Coating finishing is a common textile post-finishing technique, which generally includes the following methods.

Coating finishing is a common textile post-finishing technology, which generally includes the following methods.

(1) PA coating, also known as AC glue coating, which is a water-based acrylic coating. It is currently a common type of coating that can enhance hand feel, wind resistance, and drape, often used for anti-down, hand feel, and color fixing. There is also acrylic and small horse glue, which is a solvent-based acrylic coating suitable for waterproof coatings, slightly more expensive than AC.

(2) PU coating, which is a polyurethane coating, also divided into water-based and solvent-based. After coating, the fabric feels full, elastic, and has a film-like surface.

(3) Waterproof coating, usually ranging from 600 to 20000, combined with PA and PU multi-layer coating as required.

(4) PA white glue coating, which involves applying a layer of white acrylic resin on the fabric surface, can increase the coverage of the fabric, making it opaque and enhancing the brightness of the fabric color.

(5) PU white glue coating, which involves applying a layer of white polyurethane resin on the fabric surface, has a similar function to PA white glue, but PU white glue provides a fuller hand feel, more elasticity, and better fastness.

(6) PA silver glue coating, which involves applying a layer of silver-white glue on the fabric surface, gives the fabric light-blocking and radiation protection functions, commonly used for curtains, tents, and clothing.

(7) PU silver glue coating, which has similar functions to PA silver glue coating. However, PU silver-coated fabrics have better elasticity and fastness, making PU silver better than PA silver for fabrics requiring high waterproofing, such as tents.

(8) Pearl coating, which gives the fabric surface a pearl-like luster through a pearl coating, available in silver-white and colored options. It looks very beautiful when made into clothing. There are also distinctions between PA pearl and PU pearl, with PU pearl being smoother and shinier, having a better film feel, and is often referred to as "pearl film."

(9) Oil gloss coating, which results in a smooth and shiny surface after coating, generally suitable for tablecloths.

(10) Silicone high-elastic coating, also known as paper feel coating. It is very suitable for thin cotton fabrics used for shirt materials, providing a full hand feel, being crisp yet elastic, with strong resilience and wrinkle resistance. For thicker fabrics, it offers good elasticity and fastness.

(11) Leather film coating, which involves calendering and coating the fabric surface to form a leather film, completely changing the style of the fabric. Generally, leather film surfaces are made into the front of clothing, giving a leather jacket style. There are matte and glossy options, and various colors can be added to the coating to create colorful leather films, which are very beautiful.

(12) Flame retardant coating, which involves treating the fabric through immersion or coating to give it flame retardant properties. Colors or silver can be applied to the fabric surface. Generally used for curtains, tents, clothing, etc.

(13) Teflon three-proof treatment, which involves treating the fabric with DuPont Teflon to give it waterproof, oil-proof, and stain-proof functions.

(14) UV-resistant coating, which involves treating the fabric to provide UV resistance, i.e., the ability to block UV penetration. Generally, light colors are more difficult to achieve, while dark colors are easier to meet the standards.

(15) There are also coatings specifically for cotton fabrics, such as cotton color scraping coating, paper feel coating, washed old coating, hidden pattern coating, oil feel and wax feel coating, colorful leather film coating, etc.

(16) Foam coating, which requires a separate foaming machine to pre-mix the slurry, commonly used for curtain fabrics, with soft and thick hand feel, light-blocking, and other characteristics.

Currently, the dyeing and printing industry is undergoing technological innovation, increasing demand, and intensifying market competition. With the recovery of the global economy, the demand for textiles continues to grow, and the dyeing and printing industry, as an important link in the textile industry chain, is also showing a steady development trend.

Current Situation of the Textile Printing and Dyeing Industry

The textile dyeing and printing industry is an important sector that is widely involved and closely connected to people's lives. Currently, with the development of the global economy and the improvement of living standards, the status of the textile dyeing and printing industry is also constantly changing. Below is a brief overview of the current situation in this industry.

Textile Printing and Dyeing Waste Gas Treatment Technology Solutions

The textile printing and dyeing industry generates a large amount of waste gas during the processing, which not only pollutes the environment but also poses a threat to human health. Therefore, adopting effective waste gas treatment technologies is crucial for the textile printing and dyeing industry. Below are some technical solutions for treating waste gas in textile printing and dyeing.

The three major processes of dyeing and printing.

The preparation of raw fabric includes raw fabric inspection, re-rolling (by batch, by box, printing), and seam sewing. The purpose of raw fabric inspection is to check the quality of the grey fabric and to address any issues promptly. The inspection content includes physical indicators and appearance defects. Burning off the fluff aims to remove the fluff on the fabric surface, making it smooth and aesthetically pleasing, and to prevent uneven dyeing and printing defects caused by the presence of fluff during dyeing and printing. To facilitate smooth weaving, textile factories often apply sizing to the warp yarn to enhance strength and abrasion resistance. The sizing on the grey fabric affects the fabric's water absorption properties, impacts the quality of dyed and finished products, and increases the consumption of dyeing chemicals. Therefore, the sizing should be removed before boiling and processing, a process known as desizing.

Types and Characteristics of Textile Coating and Finishing

Coating finishing is a common textile post-finishing technique, which generally includes the following methods.

The principle of dyeing

The dyeing process of fiber fabrics generally goes through three stages: surface adsorption, internal diffusion, and dye fixation.