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The principle of making yarn
Jul 17, 2018

First, remove Miscellaneous Spinning is a science that studies the process of weaving staple fibres into yarns, and yarns are generally made of short fibres of varying lengths, by means of a twist, and by a long continuous filament twist. In the spinning process, the first need to remove the miscellaneous defects, that is, raw materials for initial processing, also known as the preparation of spinning raw materials. Different kinds of raw materials, different types and nature of impurities, processing methods and arts are also different.

The primary processing methods of raw materials are physical methods (such as cotton rolling), chemical methods (including degumming, scouring of spun silk), and physical and chemical methods (such as wool washing and peat).

Second, Loose solution will be disorderly, transverse closely related to the fiber processing into a longitudinal order, and has a certain requirements of the smooth yarn, the need to turn the bulk of fiber into a single fiber state, to remove the existence of fiber material horizontal link, to establish a solid vertical link between the beginning and the end. The former is called the loose solution of fiber, the latter is called a set of fibers. The loose solution of fiber is to completely remove the transverse connection between fiber and fiber. But the damage to the fibres must be reduced as much as possible. The set of fibers is a longitudinal linkage that allows the loosened fibers to be set up in an orderly, sequential manner, and the fibers in the set are uniformly distributed, with a certain line density and strength. Fiber aggregates, also need to add a certain twist.

Collection process is not a complete, to be combed, stretching and twisting and so on multiple processing can be completed.

Three, open loose Open pine is to tear large chunks of fiber into small pieces, small fiber bundles. Broadly speaking, hemp degumming is also a kind of open pine. With the opening function, the contact force between the fibers and impurities is weakened, so that impurities are removed and the fibers are mixed.

The loose effect and the removal of impurities are not done at once, but are gradually realized by the rational configuration of the function of tearing, striking and dividing.

Four, comb Carding function is a large number of dense comb on the carding machine fiber small pieces, small bundles further loose into a single root state, thus further improve the fiber's loose solution. After carding, the transverse relation between fibers is basically relieved, and the impurity and blending function is more sufficient. But there are a lot of fibers in the curved shape. And there is a curved hook, each fiber still has a certain horizontal link.

The earliest spinning machine

Five, combing Combing the carding machine is to use comb for the fiber at both ends of the grip state of the more detailed comb. Combing machine can eliminate a certain length of short fibers and small miscellaneous defects, to promote the fiber more parallel, straight.

Chemical fiber because of its length is neat, the impurity is few, the straight parallel state is good, generally does not pass through the combing machine processing.

VI. Draft After the carding of the sliver drawn long, gradually reached the predetermined thickness, this process is called the draft. It lays a foundation for establishing a regular and end-to-end relationship between fibers.

However, the drawing will bring the yarn strip short fragment unevenness, therefore, needs to configure the reasonable drafting device and the craft parameter.

Seven, add twist

Twisting is to twist the bar around its own axis, so that the fiber parallel to the required axis is helical, resulting in radial pressure to stabilize the longitudinal connection between the fibres.

Eight, winding Winding semi-finished or finished products into a certain form to facilitate the storage, transportation and processing of the next process, which is called winding. The winding process should be carried out continuously on the basis of not affecting the product yield and quality, and should strive to realize the continuous production between the processes, and minimize the quality problems caused by the winding process.

In short, spinning process generally includes raw materials preparation, open loose, carding, impurity, mixing, stretching, and combination, twisting and winding, and other functions, some of the role is repeated repeatedly to achieve.

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