Basic Yarn Knowledge——Principle of Yarn Production(1)

 

 

 

A, in addition to complex

 

Spinning is the study of spinning short fibers into yarns. Yarns are usually made by splice of many short fibers of varying lengths, or by twisting of very long continuous monofilaments.

In the process of spinning, imperfections need to be removed first, that is, the initial processing of raw materials, also known as the preparation of spinning raw materials.

Different kinds of raw materials, different kinds and properties of impurities, processing methods and techniques are also different.

The primary processing methods of raw materials mainly include physical methods (such as cotton ginning), chemical methods (such as hemp degumming, silk scouring) and the combination of physical and chemical methods (such as wool washing and carbonization).

 

Second, the release

 

In order to process the disordered and closely connected fibers into the longitudinal sequence and smooth yarn yarn with certain requirements, it is necessary to change the lumpy fibers into single fibers, remove the horizontal connection existing in the fiber raw materials, and establish a firm longitudinal connection connecting the end and end.

The former is called the release of the fibers and the latter is called the collection of fibers.

The release of the fiber is to completely remove the transverse connection between the fiber and the fiber.

But the damage to the fibers must be minimized.

The assembly of fibers is to make the disassembled fibers reestablish the longitudinal connection in order. This connection is continuous, and the distribution of fibers in the assembly body should be uniform, and have a certain linear density and strength at the same time.

Fiber assembly, also need to add a certain twist.

The assembly process is not completed at one time, after carding, drafting and twisting and other multiple processing can be completed.

 

Third, opening

 

To loosen is to tear large fibers into small pieces or bundles.

Broadly speaking, hemp degumming is also a kind of open loose.

As the opening and loosening process proceeds, the bond between the fibers and the impurities weakens, allowing the impurities to be removed and allowing the fibers to mix.

The removal of opening and loosening and impurities is not completed at one time, but through tearing, striking and segmentation of reasonable configuration for gradual realization.

 

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Basic Yarn Knowledge——Principle of Yarn Production(1) publish from:2021-07-13