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Demin laundry detergent
Behind the unique charm of denim clothing, a series of complex washing processes and chemical additives are indispensable. These additives not only give denim fabrics a unique texture and color, but also ensure the smooth progress of the entire production process. Today, we will delve into the common chemical additives used in the denim washing process, and understand their respective functions and applications.
Common additives for desizing
1. Caustic soda (liquid alkali/flake alkali)
Caustic soda, in its milky white flaky crystal form, plays a crucial role in the refining process during desizing. Whether it is the heavy color extraction treatment of dark fabrics or the high-temperature boiling before dyeing white fabrics, caustic soda is an indispensable auxiliary.
2. Soda ash
Similar to caustic soda, soda ash exists in the form of a white powder and also has a refining effect. It is commonly used for fiber treatment during the desizing process.
3. Edible oil
The light blue transparent liquid soap not only cleans the fibers, but also exhibits excellent anti dyeing performance, helping to protect the color stability of denim fabrics during washing.
4. Industrial laundry detergent
Similar in function to soap oil, industrial laundry detergent appears as a white powder and is also used for fiber cleaning and anti staining.
5. Hydrogen peroxide
Transparent and pungent hydrogen peroxide also plays a refining role in the desizing process, especially suitable for dark heavy drawn or white embryo fabrics that require high-temperature treatment.
Anti back staining come in different forms and types, including paste like, powder like, and block like forms. The latest anti back stain agents include multi-element new polymer resins, mainly composed of polyester resins. Becoming an important tool for protecting denim indigo dye from spreading to non target areas such as horse beds, sand beds, bag fabrics, or embroidery beds.
Post treatment auxiliary
1. Soft oil
In the market, soft oil exists in various forms, such as soft oil paste, soft oil essence, soft film, etc. Although they come in different forms, they are all designed to provide softening treatment for denim before washing water out of the tank, improving the texture of the fabric.
2. Silicone oil
Silicone oil is divided into three types: light blue liquid, milky white liquid, and gel like high concentration product. It can significantly enhance the softness and smoothness of the fabric surface before being added to the washing finished product and discharged from the tank.
3. Brightener
A milky white liquid brightener used to give the fabric a more transparent and smooth appearance before washing finished products out of the tank.
4. Foaming agent
A leavening agent with milk white and mixed yellow as the main color tones, mainly targeting pure cotton fabrics. By making the fibers fluffy, it enhances the texture and comfort of the fabric.
5. Glass water
Glass water mixed with yellow liquid, known for its high quality, was once the precursor of hardeners. Adding it before the finished denim product is released from the tank can significantly enhance the hand feel and stiffness of the dried product.
Common auxiliary used by various process departments
1. Resin
Mixed yellow liquid resin, mainly used for wrinkle shaping treatment in the wrinkling department. Through soaking, drying, and creasing processes, resin can permanently fix the wrinkle shape and maintain the unique style of denim fabric.
2. Phosphoric acid
Phosphoric acid, a transparent liquid, plays a catalytic role in the horse chestnut process by mixing with potassium permanganate and water to form a solution, promoting the realization of the horse chestnut effect on heavy horse chestnut or black cow fabrics.
3. Fixing agent
A fixing agent for mixed yellow liquids, specifically designed for fixing denim after dyeing, ensuring long-lasting adhesion of dyes to fabrics and enhancing color stability and durability.
Through a deep understanding of the above chemical additives, we can not only have a more comprehensive understanding of the complexity of denim washing technology, but also better appreciate the beauty of technology and art behind every denim garment.
Post time: Jan-23-2025