Latest News and Updates on Textile Auxiliaries and Dyes

What types of disperse dyes are there?Disperse dyes can be classified in two ways: by application performance or by chemical structure.1. Classification by application:The application performance classification method divides disperse dyes into three main categories based on dyeing performance: E-ty Read More

How to improve the wash fastness of disperse dyes?Disperse dyes are widely used in dyeing synthetic fibers such as polyester, and their wash fastness is a key indicator of dye quality. Wash fastness refers to the ability of a dyed fabric to resist dye shedding during washing, directly impacting the Read More

What are the characteristics and processes of yarn dyeing?Compared to fabric dyeing, yarn dyeing requires ensuring that the dye penetrates the entire yarn bundle, achieving uniform color throughout the inner and outer layers, and avoiding "white cores" or color variations. The basic process is as fo Read More

What's the key to dyeing acrylic fiber?The key to dyeing acrylic fiber lies in controlling the dye uptake rate and achieving uniform dye absorption. The following aspects can help guide this control.1. Use of Retarder: An Indispensable "Brake"Function: Retarders have a positive charge and compete wi Read More

What auxiliaries can dye mills use to improve uneven dyeing?Uneven dyeing can be improved and prevented using the following categories of auxiliaries:I. Key Auxiliary Categories and Their Principles of Action1. Leveling AgentsThis is the most core and commonly used category of auxiliaries for addres Read More

The Core Difference Between Dye Blocks and MonochromeIn the fields of textile dyeing and color science, monochrome and block are two fundamental and core concepts, fundamentally different in their application, process, and final effect.1. Monochrome: Purity and UniformityA monochrome, also known as Read More

On Fiber Properties and the Art of Dye SelectionTextile dyeing is more than a simple coloring process; it's a highly precise art based on science. Its core lies in a deep understanding of the chemical nature of different fibers and matching them with dyes that form strong bonds. Choosing the wrong d Read More

Heat Fixation: A Key Process in Polyester DyeingDisperse dyes are highly hydrophobic and have very low water solubility. Heat fixation is the key step in ensuring they are firmly dyed onto similarly hydrophobic polyester fibers. Heat fixation is the core process for imparting vibrant color and excel Read More

Cheese Dyeing: Dye SelectionIn cheese dyeing (筒子纱染色), the choice of dye mainly depends on the fiber composition of the yarn rather than the dyeing method itself. Different fibers require different dye classes to achieve the desired shade and fastness properties. Commonly used dyes include:Reactive D Read More

Yarn and Fabric: Different Stages of Dye ApplicationIn textile dyeing, while the core principle is the combination of dye and fiber, whether dyeing targets individual yarns or woven fabrics can lead to significant differences in the process and results.1. Dyeing Timing and Target:Yarn dyeing occurs Read More

What are the dye index tests?Dye Appearance ComparisonReference Standard: GB250-1995 Grey Scale for Assessment of Color Change (eqvIS0105/A02-1993)Test Method:1. Dye Particle Size Comparison MethodPlace approximately 20g of the test sample and the same weight of the standard sample side by side on a Read More

What should I pay attention to when dyeing denim?Dyeing denim is a crucial process that requires meticulous care to achieve the desired color, quality, and durability. Here are some important considerations when dyeing denim.1. Raw Material QualityFabric Selection: First, choose high-quality cotton. Read More