I. Impurity removal

Spinning is a science that studies the processing of textile short fibers into White embryo. White embryos are generally made by twisting many short fibers of different lengths, or by twisting very long continuous monofilaments together. In the spinning process, the first step is to remove impurities and defects, that is, to conduct a preliminary processing of the raw materials, also known as the preparation of spinning raw materials. The types of raw materials vary, as do the types and properties of impurities, and so do the processing methods and techniques. The initial processing methods of raw materials mainly include physical methods (such as cotton rolling), chemical methods (such as degumming of hemp and refining of silk), and combined physical and chemical methods (such as washing and de-grass-carbonization of wool).

Ii. Release

To process the disordered and closely connected fibers horizontally into smooth White embryos arranged in a longitudinal sequence and with certain requirements, it is necessary to transform the blocky fibers into a single fiber state, eliminate the transverse connections existing in the fiber raw materials, and establish a firm longitudinal connection at the beginning and end. The former is called the release of fibers, and the latter is called the collection of fibers. The release of fibers is to completely eliminate the transverse connections existing between fibers. However, the damage to the fibers must be minimized as much as possible. The collection of fibers is to re-establish the orderly longitudinal connections of the loosened processed fibers. These connections are continuous, and the distribution of fibers within the collection should be uniform, while also having a certain linear density and strength. Fiber aggregates also need to be added with a certain twist. The assembly process is not accomplished in one go. It requires multiple processing steps such as carding, stretching and twisting to be completed.

Iii. Loosening

Opening is the process of tearing large pieces of fibers into small pieces or bundles of small fibers. Broadly speaking, the degumming of hemp is also a kind of loosening. As the opening process proceeds, the connection force between the fibers and impurities weakens, thereby removing the impurities and simultaneously achieving a mixing effect among the fibers. The loosening effect and the removal of impurities are not accomplished in one go, but are gradually achieved through the reasonable configuration of actions such as tearing, striking and dividing.

Iv. Sorting Out

The carding effect is achieved by the numerous dense carding needles on the carding machine further loosening the small pieces and bundles of fibers into a single state, thereby further improving the loosening of the fibers. After combing, the lateral connections between the fibers are basically eliminated, and the impurity removal and mixing effects are more thorough. But among them, a large number of fibers are curved. And there are curved hooks, and there is still a certain lateral connection between each fiber. The earliest spinning machine

V. Combing

The combing function of a combing machine is to use the comb to perform a more detailed combing of the fibers at both ends respectively when held. Combing machine processing can remove short fibers and fine defects below a certain length, making the fibers more parallel and straight. Chemical fibers, due to their uniform length, low impurity content and good straight and parallel state, are generally not processed by combing machines.

Six. Stretching

The process of lengthening and thinning the combed strips gradually to the desired thickness is called stretching. It lays the foundation for establishing a firm and regular connection between the ends of the fibers. However, stretching can lead to uneven short yarn segments. Therefore, it is necessary to configure a reasonable stretching device and process parameters.

Seven. Twisting

Twisting is the process of twisting the filament around its own axis, causing the fibers parallel to the filament's axis to form a spiral shape, thereby generating radial pressure to fix the longitudinal connection between the fibers.

Viii. Winding

The process of winding semi-finished or finished products into a certain form to facilitate storage, transportation and the processing of the next procedure is called winding. The winding process should be carried out continuously without affecting the output and quality of the product. Efforts should be made to achieve continuous production between each process and minimize the quality problems caused by the winding process as much as possible. In summary, the spinning process generally includes raw material preparation, opening, carding, impurity removal, mixing, drawing, merging, twisting and winding, etc. Some of these functions are achieved through multiple repetitions.

White Embryo https://www.jinhangyarn.com/White-Embryo