Does the polyester microfiber brushed dyed fabric require special treatment to ensure that the ultra-fine structure of the fibers is not damaged?

The polyester microfiber brushed dyed fabric indeed requires special treatment to ensure that the ultra-fine structure of the fibers is not damaged. Due to the unique characteristics of microfiber, such as its small single filament fineness, large specific surface area, and high amorphous region content, its dyeing performance significantly differs from that of regular polyester fibers. Below are the key points regarding the special treatment needed during the dyeing process of brushed polyester microfiber fabric:

Selection of Suitable Dyes and Auxiliaries: Microfibers absorb dyes quickly but have slow diffusion and poor leveling properties, making them prone to uneven dyeing. Therefore, when selecting dyes, priority should be given to those that are well-matched with microfibers, easily penetrable, and have high color fastness. Additionally, selecting suitable auxiliaries, such as leveling agents and dispersants, is crucial for improving dyeing results.

Control of Dyeing Process Parameters: During dyeing, it is essential to strictly control parameters such as temperature, pH, and time. Microfibers have a small cross-sectional diameter and a high light reflection coefficient, which may cause the dyed color to appear lighter than that of conventional polyester fibers. Therefore, to achieve the desired color depth, it may be necessary to increase the dye concentration and appropriately adjust the dyeing temperature and time. Moreover, techniques like stepwise heating and controlled heating rates can help improve dyeing uniformity and color fastness.

Use of Appropriate Dyeing Equipment: Dyeing brushed polyester microfiber fabric may require specially designed dyeing equipment, such as dyeing vats with efficient stirring and uniform heating functions, to ensure that dyes and auxiliaries are evenly distributed within the fibers and to prevent mechanical damage to the fibers.

Necessary Pre-treatment and Post-treatment: Before dyeing, adequate pre-treatment of the polyester microfiber, such as degreasing and desizing, is essential to remove impurities and oils from the fiber surface, improving dyeing uniformity and fastness. After dyeing, appropriate post-treatment, such as fixing and washing, can further consolidate the dyeing effect and enhance the quality and stability of the product.

The polyester microfiber brushed dyed fabric requires a series of special treatments to ensure that the ultra-fine structure of the fibers is preserved and to achieve the desired dyeing results. These treatments include selecting suitable dyes and auxiliaries, controlling dyeing process parameters, using appropriate dyeing equipment, and carrying out necessary pre-treatment and post-treatment.