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Nylon Yarn Factory

Introduction of
Salud Style Nylon Yarn Factory

Salud Style is one of the largest nylon yarn suppliers in the world, specializing in the manufacture and sale of all types of nylon yarns. At present, we have become the top 3 competitive enterprises in the chemical fiber textile industry in Guangdong Province. We promote industrial upgrading in the field of chemical fiber and have gained a high reputation in the industry, attracting the attention and cooperation of many internationally renowned yarn suppliers. Stretch nylon yarn from Salud Style has been widely used in the fabrics of well-known high-end brand clothing. In addition, we have also started to use environmentally friendly raw materials to produce recycled nylon yarn.
The nylon yarns developed by Salud Style are also used in the production of other yarns under the Group’s factory alliance. We closely combine yarn production and R&D to quickly build an international yarn industry chain platform.

Nylon Yarn Manufacturing Process

Nylon was the first synthetic fiber to appear in the world. Its appearance brought a new look to textiles. Its synthesis is a major breakthrough in the synthetic fiber industry and a very important milestone in polymer chemistry.

Take Nylon Stretch Yarn as an example, its production process is simpler than other natural fibers. The production of nylon stretch yarn can be roughly divided into two steps: spinning and post-processing.

1 Spinning Process

According to the spinning speed, the spinning process can be divided into conventional spinning process, medium-speed spinning process, high-speed spinning process and ultra-high-speed spinning process.

We will use high-speed spinning, the most commonly used process route for the production of nylon yarns, to illustrate the spinning process.

The spinning speed of high-speed spinning is 3000-3600m/min, and the product after this process is pre-oriented yarn (POY).

The principle of the process is to feed nylon chips into the chips hopper, then melt them, and ensure that the melt flows stably in the screw extruder. 

In the screw extruder, the melt is filtered and pressed into the spinneret to spray out a thin stream of melt, and then quickly condensed by cold air to form a solidified tow fiber. 

During this process, pre-stretching is also generated due to the function of the yarn guide, and it also makes the nylon fiber thinner. Then the pre-oriented nylon yarn is wound into a roll with a certain shape by the winding system.

2 Post-processing

The post-processing can make the pre-oriented nylon yarn suitable for textile production. After a series of post-processing, the structure and properties of the nylon fiber are improved.

Post-processing can be roughly divided into the following five steps: POY to DTY, twisting, hanking, dyeing, and winding.

2.1 POY to DTY

Combining the drawing and twisting process on the same machine, the produced yarn is called draw texturing yarn – DTY.  

2.2 Twisting Process

Twisting refers to combining two or several single yarns together and twisting them through a machine to produce strong, elastic strands, with the properties of uniform thickness, smooth surface, and wear-resistance,  to meet the needs of the subsequent process.

The workers will set the twist on the machine according to the customer’s requirements, and wind one end of the nylon DTY on the machine and the machine will operate the twisting process. When the required weight of twisted nylon DTY  is reached, it will stop and give a red light signal to remind workers.

2.3 Hanking Process

The purpose of hanking is to loosen the twisted nylon yarn so that the dye can penetrate into the yarn completely during the dyeing process.

Workers will place the twisted product next to the machine, connect one end of the yarn to the machine, and turn on the machine.

During the process of hanking, workers will add some water appropriately to tighten the nylon yarn a little bit.

After hanking, the product becomes “bread yarn”. Then it will be packed, bagged, and then transported to our dyeing factory for dyeing.

2.4 Dyeing Process

Before the mass dyeing, professional color staff will prepare the color formula according to the customer’s sample and dye it with a dyeing machine. Then, they compare the dyed sample with the customer’s sample under the specified lighting environment. After confirming that there is no color difference, mass dyeing will be carried out.

Hank dyeing, dope dyeing, and cone dyeing are the three most commonly used dyeing methods.

The dyeing method used in our nylon yarn factory is hank dyeing. Compared with other dyeing methods, hank dyeing has the characteristics of high color fastness and uniform dyeing. Our dyeing factory is equipped with dyeing tanks of different specifications, and the yarn dyeing weight ranges from 1.5kg to 800kg. Small dyeing tanks are generally used to dye sample yarns for customers.

Dyeing is a link that tests experience and technology the most, because this process requires not only precise dye ratios, but also temperature control. At the same time, workers must add additives at appropriate times based on experience for the corresponding functions, such as waterproof, heat preservation, antibacterial, etc.

2.5 Winding Process

Winding is the last process of yarn post-processing.  Its task is to process the hank yarn into the cone nylon yarn, which is the product that our customer can directly use to produce the textile products, such as socks and medical bandages.

Before winding, workers will place the dyed nylon “bread yarn” in a cool place and dry it with the wind.  This process generally lasts 2 to 3 days.

Then the workers put the dried dyed nylon “bread yarn” on a shelf, spread it out evenly, and cut off the surface yarn that has been exposed to air for a long time.

When it’s all done, workers will place it on the machine, and turn on the machine to wind it.

After winding, the cone nylon yarn will be placed on a shelf, and after passing the inspection by the workers, it will be packed, stored and sent out to our customers. 

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Let's get in touch
Contact us today! No matter where you are, our experts will provide the right solution for your yarn needs.
Connect with us:
We will get back to you within one business day.
Contact sales manager