What is super imitation cotton?
Super imitation cotton currently mainly refers to differentiated polyester products, including filament and short fiber. To put it more vividly, super-imitation cotton products look like cotton (visual), feel like cotton (tactile), wear like cotton (compatibility), and are more convenient to use than cotton (wearability). They are similar to imitation cotton. Cotton and imitation cotton have better properties than cotton.
What is super imitation cotton?
1. Imitate the characteristics of cotton fiber
Imulate the wooly feel and bulkiness: Polyester filament has high bundleability and smooth surface. To make the surface have a cotton-like wooly feel, The structure of the fiber must be changed. At present, there are two main ways to improve the wool feel and bulkiness of polyester. One is to use air to blow out the filaments so that they are intertwined to form an irregular structure. The other is to use a combination of different raw materials to form a three-dimensional curled bulky form.
Imitate the hygroscopicity of cotton fiber: The current methods to improve the hygroscopicity of polyester mainly include: using fine or ultra-fine denier filaments to increase the specific surface area of the fiber and increase the capillary wicking speed; modifying the fiber cross-section , increase moisture absorption and moisture conduction grooves to speed up moisture absorption; add hydrophilic groups on the fiber to enhance the moisture absorption capacity of the fiber.
Imitate the luster of cotton fiber: To improve the gloss of polyester and achieve the effect of imitating cotton, diffuse reflection needs to be formed on the surface of the fiber to weaken its ability to reflect light. The fiber surface can be modified or fine/ultra-fine fibers can be used to improve their diffuse reflection capabilities.
2. Make up for the shortcomings of cotton fiber
The characteristics of polyester can be used to make up for the shortcomings of cotton fiber. For example, polyester has better light resistance, heat resistance, mold resistance, etc., which can make up for the shortcomings in the durability of fiber fabrics; polyester has a large initial modulus, is stiff, and is not easy to deform, which can make up for the fact that cotton fabrics are easy to wrinkle, deform, and are not wear-resistant. Not enough.
How to process super imitation cotton fabric?
The cotton-like effect of super imitation cotton first depends on the organization structure of the fabric. In the design of fabric structure, in order to enhance the hygroscopicity of super-imitation cotton fabrics, the fabric design is carried out according to the different application fields of the fabric. Sometimes plain weave is used, and sometimes twill weave is used.
Setting of warp and weft density
Due to the special properties of super-imitation cotton fiber and considering the shrinkage characteristics of the fiber during the post-finishing process, the warp and weft density must be properly designed so that the fiber can After heat shrinkage, the thickness and fluffiness of the fabric can be fully reflected.
Dyeing and finishing process
The cotton-like effect of super-imitation cotton fiber is largely reflected through post-finishing. Two of the more typical ones are soft tenter finishing and felt finishing. Due to the large modulus of polyester, the fabric is stiff and uncomfortable to wear. To make the fabric have a moderately soft feel, the fabric needs to be softly finished, and during the process of thermal shrinkage of the fabric, it needs to be stretched and shaped to enhance the cotton-like feel of the fabric. Carpet finishing will make the fabric plumper and softer, further improving its simulation and wearability.
Application of super-imitation cotton products
Super-imitation cotton is not only close to cotton fabrics in fiber surface morphology and fabric style, but more importantly, its fabrics imitate in performance and function Cotton, ultra-cotton, and has excellent dynamic thermal and moisture comfort performance. Therefore, super imitation cotton fiber can be widely used in sportswear, casual wear, shirts, underwear, coats, home textiles and other products.