Polyester Yarn

The largest share of produced yarns including synthetic and natural is made up of the polyester fibers. Polyester fibers, like all other synthetic fibers, are manufactured industrially. In terms of characteristics, they are good alternative for natural fibers, such as cotton. To produce polyester, the combination of dimethyl terephthalate and polyethylene glycol or terephthalic acid (a substitute for dimethyl terephthalate) is used in the vicinity of proper catalysts. The resulted polymer from the combination of these two primary materials pumps to the melt spinning machine and pass through spinnerette, which have specific number of holes. Under the influence of cold air, it converts into a fiber. The bundle of converted fibers, subsequently, will be treated thermally. During molecular arrangement and thermal stabilization, they form short fibers (staple) which will be cut in arbitrary sizes and packed later.
Polyester fibers have important properties such as high strength, reversibility and adequate dimensional stability, abrasion resistance, color change resistance exposed to the sunlight, and the resistance against materials used for bleaching in dry cleaning, which make this product more durable than natural fibers. Polyester is crystalline and has a unique chemical structure. It is resistant to most chemicals due to the lack of active polymers in its structure and low moisture absorption. Color stability and being iron free are other most important properties of this fabric. Moreover, it is also resistant to hot weak and cold strong acids. Dilute alkaline substances do not affect this fiber, but strong alkalis can cause damage to the fiber. The physical properties of the polyester fibers can be varied according to the demand of the market and consumer units. Polyester fibers, either could be use purely or mixed with other fibers, such as cotton, viscose, and wool, in the production of various types of yarn, curtain fabrics, clothing, cotton tricots, linens, carpet, all kinds of filters, linings, conveyor belts, tarpaulins, all different types of ropes, sleeping goods such as quilts and pillows, and many other products. Polyester fibers are produced in many countries by different commercial names, including “Trilene” in England, “Trier” in Germany, “Tergal” in France, “Tetron” in Japan, “Trital” in Italy, and “Dacron” in the United States.
Polyester fiber is produced according to the customer’s requirement for the most productive performance in any of the various textile processes, including ring spinning, spinning, open-end and vertex spinning. The polyester fibers can be used 100% purely or in a mixture with cotton and viscose with different ratios in spinning. In open-end and Vertex Spinning, the minimum amount of powder deposited on the rotor and nozzles results in the highest yield. Fibers are semi-opaque white and bright and can be produced for common uses in different colors according to customer’s requirements.
Rasan Riss manufacturing unit can produce wide range of products, ranging from semi-matte to glossy painted polyester yarns based on the latest available technology. The produced yarns are used for purposed such as ring-spinning systems, open-end and vertex spinning as well as for non-woven purposes such as fillers. This manufacturing unit is stablished based on environment friendly and energy saving standards.
Customer Satisfaction is the prime priority of the Rasan Riss and is aligned with our key belief in providing the best product quality that meets customer needs.

International Standards

All types of polyester yarn are produced under the highest global standards, using the best quality raw materials. Raw materials have gone through testing of the quality in the well-equipped laboratories. The quality control of the final products, optimization of production process, and transportation as well as packing processes have been in accordance with global standards to increase efficiency, waste reduction, and ultimately manufacturing of a product which is compatible to the needs of the target market.

Advanced Manufacturing Technology

The latest technology and modern machinery from the well-known and the best international companies to set up advanced lines of the polyester yarn production. Mechanized machines with the least human intervention in the production lines has minimized human error and has produced less waste in the production lines.

Diversification Of Production and Customization

Polyester yarns have been produced with different characteristics to support the different market needs, different usage in the various industries. The possibility of production for customized polyester yarns based on the specific needs of customers and business partners is also available.

Competitive Prices Compare To Our Rivals

Polyester yarn prices vary according to different criteria, such as the type and quality of raw material used in the production of yarn, or the volume of the order and the type of order. The specific characteristics of polyester yarn are directly influenced by the customer’s demand. However, considering the global competitors of this industry, keeping prices competitive while the high-quality of the yarns are retained is one of the main advantages in this market.

Needs Assessment And Manufacturing Of New Products

Having a research and development department in order to take advantage of the recent knowledge of the polyester yarn production in one hand, and the needs assessment for global markets to produce polyester yarn according to the customers’ attitude and the demands of the business partners for the final products on the other hands, direct us toward the sustainable and continuous development of production lines to get more shares of the target market.

More than a half century of experience in the spinning industry

Continuous investment in technology and production processes to enhance quality and customer satisfaction


Research and Development


Quality Control


Competitive Advantage


Customer Satisfaction

Rasan Riss Polyester Yarn Products

The highest quality in polyester yarns production using the latest and most modern industrial machinery

Learn more about Rasan Riss and the details of our polyester yarn products