Polyester fabrics are prone to pilling, and pure cotton clothes tend to deform, so what kind of fiber is that? It not only has the excellent characteristics of cotton but also has the excellent characteristics of polyester, making up for the shortcomings? That is super imitation cotton.
What is super imitation cotton
Super imitation cotton” is mainly polyester with a polyester content of more than 85%. It is a differentiated and functional polyester fiber, including long Silk imitation cotton and short fiber imitation cotton. 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 ( Washable and wearable), it has the excellent characteristics of imitating cotton, imitating cotton, and imitating cotton better than cotton. It is the product of the mutual integration and integration of multiple technologies such as polymerized modified spinning, spinning, weaving, dyeing and finishing.
Super imitation cotton imitation What is it?
1Imitates the characteristics of cotton fiber
① Imitate wool feel and bulkiness
Polyester filament has high bundling properties and smooth surface, so the surface must be formed To achieve a cotton-type wooly feel, the fiber structure must be changed. Currently, there are several ways to improve the wooly feel and bulkiness of polyester: using the air network form to blow out the filaments and intertwining them to form irregular structures, and using different combinations of raw materials. Forming three-dimensional curled and puffy shapes, etc.
Observed from the sense of hair, the air network is deformed The fineness of imitation cotton silk is uneven, and the wool feel is greatly different. The fineness of imitation cotton silk with different raw material combinations is uniform, and the wool feel can be highlighted during post-finishing, which generally does not affect the production of subsequent processes.
②Imitate the hygroscopicity of cotton fiber
The current methods to improve the hygroscopicity of polyester mainly include: using fine or ultra-fine denier Denier increases the specific surface area of the fiber and increases the capillary wicking speed; the fiber cross section is modified to add moisture absorption and moisture conduction grooves to speed up moisture absorption; the fiber is hydrophilically modified to add hydrophilic groups on the fiber to enhance the The moisture absorption capacity of fibers.
③Imitate the luster of cotton fiber
To improve the gloss of polyester and achieve the effect of cotton fiber, it is necessary to form diffuse reflection on the fiber surface to weaken the reflection ability of light. Methods to weaken the gloss include: modifying the fiber surface to make its surface The reflection effect of light is reduced, or part of the light is absorbed to form a soft luster. Fine or ultra-fine denier fibers are used to improve the diffuse reflection ability and soften the light.
2 Make up for the defects of cotton fiber
Use the characteristics of polyester to make up for the shortcomings of cotton fiber fabrics. For example, polyester has good weather resistance properties such as light resistance, heat resistance, and mold resistance, which can make up for the lack of durability of cotton fabrics; polyester has a large initial modulus, is stiff, and is not easy to deform, and has good shape retention, which can make up for the shortcomings in durability of cotton fabrics. Cotton fabrics are prone to wrinkles, deformation, and wear resistance.
Also according to the different needs of users, different fields of use and the needs of some specific functions And developed, some even have superior performance and usability than pure cotton fabrics. By using different hydrophilic agents and different cross-sectional shapes to modify the fiber, the hygroscopicity of the super-cotton-like fiber can have different characteristics to meet the needs of people with different amounts of exercise.
Reuse recycled beverage bottles, discarded coffee grounds, etc. to produce super-imitation cotton Fiber production gives super-imitation cotton fiber new characteristics of green and environmental protection.
How to imitate super imitation cotton?
Weaving process
① Organizational structure
The cotton-like effect of super-imitation cotton fiber first depends on The structure of the fabric. Because the fibers are thinner, the capillary phenomenon is stronger, and the special-shaped cross-section has better hygroscopicity. However, in the fabric structure, in order to enhance its hygroscopicity, the fabric weave must be designed according to the different application fields of the fabric. Sometimes the plain weave is better, and sometimes the twill weave is better.
②Longitude and weft density settings
Due to the special properties of super-imitation cotton fiber, consider the fiber Shrinkage characteristics during finishing. The warp and weft density should be designed properly so that the fiber can fully reflect its surface after heat shrinkage.The thickness and fluffiness of the material.
Dyeing and finishing process
A large part of the cotton-like effect of super-imitation cotton fiber is through It is only reflected after post-finishing. Due to the special properties of the raw materials, in order to enhance the cotton-shaped effect, it must be preformed, so that the fibers can fully shrink and the fluffiness will be more prominent.
General process flow:
Soft tenter finishing
Due to the large modulus of polyester, the fabric is relatively stiff, overcoming the shortcomings of pure cotton fabrics that are easy to deform and not durable. But the stiffness is too strong and it will be uncomfortable to wear. To make the fabric have a moderately soft feel, the fabric needs to be softly finished. During the process of thermal shrinkage of the fabric, it is tentered and shaped taking into account that the fabric has fully shrunk to enhance the cotton-like feel of the fabric.
Feeling finishing
After felting, the fabric feels fuller and softer. The simulation degree and taking performance are further improved.
Application of super imitation cotton products
Super imitation cotton products are not only close to cotton fabrics in terms of fiber surface morphology and fabric style, but more importantly, their fabric performance and Functionally, it imitates cotton and super cotton, and has excellent dynamic thermal and moisture comfort performance. Therefore, its fiber can be widely used in knitting, woven, sportswear, casual wear, shirts, underwear, outerwear, home textiles and other products.
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