Imitation cotton velvet is polyester microfiber. Polyester microfiber is a new product with high quality, high performance, high technical content and high added value. Its monofilament linear density is much lower than that of conventional polyester fiber, which gives it excellent wearing properties that are different from conventional polyester fiber, such as moisture absorption, breathability, soft hand feel, fullness, elasticity, fluffiness and elegant feeling, etc.
Polyester microfiber has a higher linear density than conventional fibers It is much lower, so it is different from the dyeing properties of conventional fibers, which are mainly reflected in the dyeing rate, dyeing amount, dye lifting, color depth, level dyeing, dye migration, color brightness and dyeing fastness, etc. There is a clear difference with regular fiber. The increase in surface area caused by low linear density first causes an increase in the degree of adsorption and desorption of dyes during dyeing. The increase in adsorption degree leads to an increase in the dyeing rate and a decrease in wet fastness and light fastness. Secondly, it causes the deterioration of dyed fabrics. The color intensity is reduced. Improving the dyeing performance of polyester microfibers and fabrics has become a topic of great interest to enterprises. In fact, ultrafine fiber is a type of differentiated fiber that has developed rapidly in recent years. It is called a new generation of synthetic fiber. It is a high-quality and high-tech textile raw material. It is the direction of chemical fiber towards high technology and high simulation. A typical representative of the new synthetic fibers developed. Superfine fiber, also known as ultrafine denier. (Denier is the unit of fiber size. One gram of silk weighing 9,000 meters long is denier, and the unit of silk size is 1.1 denier). Because it is thinner than traditional fibers, it is more fluffy and soft to the touch than ordinary fibers, and it can overcome the shortcomings of natural fibers that are prone to wrinkles and artificial fibers that are not breathable. In addition, it also has many irreplaceable properties such as warmth retention, no mold, no insects, light weight, and waterproof. The varieties of ultrafine fiber include ultrafine denier viscose yarn, ultrafine denier nylon yarn, ultrafine denier polyester yarn, ultrafine denier polypropylene yarn, etc.
