Carding in Textile and Its Influencing Factors



The essence of spinning is to ensure that the fibers are arranged in an orderly manner along the axial direction. To accomplish this task, carding in textile is the foundation and key. The main task of carding is to decompose the cotton bundle into single fibers and preliminarily complete the work of fiber orientation, while removing nep impurities and some short fibers. Below we will summarize the factors that affect the quality of carding, and conduct a simple analysis.

Chemical fiber

Among all chemical fibers, the friction coefficient and specific resistance of the fiber have the greatest impact on spinning performance and carding quality. In the process of carding and drafting, the static friction coefficient (Us ) and dynamic friction coefficient (Ud ) of fiber and fiber, fiber and carding element, fiber and drafting element have a great relationship with the effect of carding and drafting.
​Chemical fibers have high specific resistance, and the static electricity generated cannot be eliminated in time. It will cause the cylinder and rolling wheel to be wound around, the cotton web will be difficult to form, the bell mouth will be blocked, and normal production will not be possible. Generally, when the specific resistance of the fiber is less than 1×108, the spinning production is normal.

Carding component factors

The carding effect is closely related to the opening element. Carding and carding components mainly include licker-in roller clothing, cylinder clothing, doffer clothing, fixed flat clothing and movable flat clothing. Fiber carding is a process of continuous carding, transfer, re-carding, and re-transfer. Only by correctly solving the relationship between carding and transfer, can we obtain fully and perfect combing, mixing and transferring, and obtain the best carding effect and carding quality.

Carding machine mechanical state factors

The carding machine is the carrier that realizes various carding processes and completes the entire carding process. If the manufacturing accuracy of the carding machine and the flatness of the card clothing are necessary conditions to ensure carding efficiency, then the mechanical state of the carding machine is a sufficient condition.
From the perspective of long-term production practice,
  • The accuracy of carding machine process gauge affects the Uster evenness CV value of carding machine card sliver.
  • The distance between the feeding roller and the feeding plate of the carding machine and the size of the holding force affect the unevenness of the sliver of the carding machine.
  • The main function of the rear pre-carding area is to card large fiber bundles into small fiber bundles to improve the carding efficiency of the movable flat.
  • The pre-carding area is the process of sorting the single fiber after carding and changing the fiber shape.
  • The biggest influence on the carding efficiency of the carding machine is mainly the carding area of the movable flat plate. The carding effect in this area determines the carding efficiency and carding quality of the carding machine to a large extent.
For more details about  influencing factors of carding in textile, click here.
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