Classic Yarn Processing Principle

- Oct 30, 2017 -

One, impurity

Spinning is a science that studies the processing of woven staple fibers into Classic Yarns. Classic Yarns are generally made of a number of short fibers of varying lengths by twisting, as well as by a long continuous filament twist Come together. In the spinning process, the first need to remove the impurities, that is, the initial processing of raw materials, also known as spinning raw materials preparation. Different types of raw materials, different types and properties of impurities, processing methods and the arts are also different. The initial processing methods of raw materials are mainly physical methods (such as ginning), chemical methods (such as hemp degumming, silk refining) and physical and chemical combination of methods (such as wool washing and defrosting).

Second, release

Will be chaotic, horizontal contact with the fiber processing into a vertical order, and has a certain requirements of the smooth Classic Yarn, the need to block fiber into a single fiber state, the release of fiber raw materials exist in the horizontal link, to establish a solid first-tail Vertical contact. The former is called fiber release, the latter is called a collection of fibers. The release of the fiber is the complete release of the fiber and the fiber between the horizontal linkages. But it is necessary to minimize fiber damage. The set of fibers is to re-establish the permissive longitudinal contact of the loosened fibers, which is continuous and should cause the fiber distribution within the assembly to be uniform and at the same time to have a certain line density and strength. Fiber aggregates, but also need to add a certain twist. The collection process is not completed once, to be combed, drafted and twisted and many other processing can be completed.

Three, open

Crack is a large piece of fiber to tear into a small piece of small fiber bundle. Broadly speaking, hemp degumming is also a kind of open. With the opening action, the contact force between the fibers and the impurities is weakened, so that the impurities are removed and the fibers are mixed. Open and the removal of impurities is not a complete completion, but after tearing, combat and the role of the rational allocation of the gradual realization of the split.

Four, combing

Carding effect is a large number of carding machine combing the needle on the fiber small pieces, small beam further release into a single state, thus further improving the fiber release. The horizontal connection between the fibers after the carding is basically released, and the impurity and the mixing effect are more sufficient. But there are a lot of fiber was curved. And there are hooks, each fiber is still a certain horizontal link between.

Five, combing

The combing function of the combing machine is a more detailed combing of the ends of the fibers by the combs, respectively. The combing machine can eliminate short fibers and fine defects below a certain length, prompting the fibers to be more parallel and straight. Chemical fiber because of its length neat, less impurities, straight parallel state is good, generally not through the combing machine processing.

Six, draft

The comb after the sliver pumping thin pull, and gradually reach the scheduled thickness, this process is called draft. Laying a solid foundation for the establishment of a regular relationship between the fibers. However, the draft will bring the Classic Yarn short pieces of uneven, therefore, need to configure a reasonable drafting device and process parameters.

Seven, twist

Twisting is to be around the axis of its own to be twisted, so that parallel to the axis of the fiber was spiral, resulting in radial pressure to maintain the vertical connection between the fibers down.

Eight, winding

The semi-finished or finished product is wound in a certain form for the storage, transportation and processing of the next process, which is said to be wound. The winding process should be carried out continuously without affecting the yield and quality of the product. Efforts should be made to achieve continuous production between processes and to minimize the quality problems caused by the winding process. In short, the spinning process generally includes the preparation of raw materials, opening, combing, impurity mixing, drawing, drawing, mixing, twisting and winding and so on, some of the role is repeated after repeated to achieve.


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