FX55434 High Quality Polyester Viscose Tr Spandex Top Dyed Fabric For Men’S Suit And Trousers

What are the difficulties in dyeing polyester viscose spandex dyed fabrics?

Polyester, viscose and spandex are common textile raw materials, each with unique physical and chemical properties. These properties bring many challenges to the dyeing process after being mixed into fabrics. The following is a detailed analysis of the difficulties in dyeing polyester viscose spandex dyed fabrics.

Polyester, as a synthetic fiber, has excellent wash resistance, abrasion resistance and corrosion resistance, but its hydrophobicity makes it difficult for dyes to penetrate the fiber. During the dyeing process, polyester fabrics require high temperature and high pressure conditions to ensure that the dye molecules can fully diffuse and fix on the fiber. However, high temperature and high pressure conditions may damage the physical properties of the fabric, such as reducing elasticity and increasing brittleness.

Viscose fiber, as a regenerated cellulose fiber, has excellent moisture absorption and air permeability, but its dyeing performance is relatively poor. Viscose fiber is prone to color flower and color difference during the dyeing process, and has strong selectivity for dyes, so it is necessary to choose matching dyes and dyeing processes.

Spandex, as an elastic fiber, is known for its excellent elasticity. However, spandex's inability to withstand high temperatures and susceptibility to thermal migration require special care during the dyeing process. High temperature will cause the physical properties of spandex fiber to deteriorate, while thermal migration may cause dyes to migrate from polyester or viscose fibers to spandex, resulting in uneven dyeing and reduced fastness.

When polyester, viscose and spandex are mixed to make fabrics, these difficulties will overlap with each other, making the dyeing process more complicated. In the dyeing process, it is necessary to take into account the characteristics of different fibers and adopt appropriate dyeing methods and auxiliaries to ensure the uniformity and fastness of dyeing. For example, dyes suitable for mixed fabrics can be selected, dyeing process parameters can be optimized, and special auxiliaries can be used to remove oils and other impurities on the fiber surface to improve the dyeing effect.

In addition, the dyeing of polyester viscose spandex mixed fabrics also needs to take into account environmental protection and sustainability requirements. When selecting dyes and auxiliaries, low-toxic, low-pollution and degradable products should be selected as much as possible to reduce pollution to the environment and harm to the human body.

Combined with the above content, it can be concluded that the difficulty of dyeing polyester viscose spandex dyed fabrics lies in the differences in the characteristics of different fibers and the interaction between them. In the dyeing process, it is necessary to comprehensively consider various factors and adopt appropriate process methods and auxiliaries to ensure the quality and environmental protection of dyeing.