What is "Melt-Spinning" - Definition & Explanation
Last Updated on: 18-Jun-2024 ( ago)
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Melt-Spinning: A Deep Dive into Synthetic Fiber Production

Melt-Spinning: The Evolution and Significance in the Textile Industry

The History and Origin of Melt-Spinning

Melt-spinning traces its roots back to the mid-20th century, serving as a pivotal development in the evolution of man-made fibers. The method, characterized by its efficient and straightforward nature, appealed to textile manufacturers due to its ability to generate high volumes of uniform synthetic fibers. The advent of polymers like polyamide and polyester in the 1930s and 1940s set the stage for the widespread adoption of melt-spinning, revolutionizing the textile industry.

Types of Melt-Spinning

  • Conventional Melt-Spinning: The process involves melting the polymer, forcing it through a spinneret, and solidifying the resultant filaments by cooling.
  • Flash-Spinning: A variant of melt-spinning where the polymer is dissolved in a solvent, followed by rapid heating, resulting in a network of fine fibers.
  • Gel-Spinning: In this type, a gel state of the polymer is used instead of completely melting it, which results in high-strength fibers.

Tips for Handling Melt-Spinning

  • Maintaining the correct melting temperature is vital to ensure the consistent quality of the fibers.
  • Spinnerets should be regularly cleaned and inspected to prevent blockages and ensure uniformity of the fibers.
  • Proper cooling techniques should be employed to facilitate the proper solidification of the filaments.

Major International Manufacturers and Users

  • DuPont: A significant player in the polymer and fibers industry, DuPont utilizes melt-spinning extensively to produce its synthetic fibers.
  • Teijin Ltd.: This Japanese chemical, pharmaceutical and IT company applies melt-spinning in the production of their high-performance polyester fibers.
  • INVISTA: Known for brands like LYCRA and COOLMAX, INVISTA employs melt-spinning in the manufacturing process of its renowned synthetic fibers.
  • Reliance Industries: India's largest private-sector company, Reliance Industries, utilizes melt-spinning in the production of polyester fibers.
  • Toyobo Co., Ltd.: A Japanese company engaged in the manufacturing and sale of films and functional polymers, life science products, and textiles made via melt-spinning.

Applications of Melt-Spinning

  • Apparel: The process is central to the production of synthetic fibers for clothing, owing to the durability, elasticity, and resilience of the fibers it produces.
  • Industrial Uses: High-strength fibers produced through gel-spinning find applications in products such as ropes, fishing nets, and high-performance protective wear.
  • Medical Field: Melt-spun fibers are used in the production of various medical textiles, including surgical sutures and artificial vascular grafts.


The development and implementation of the melt-spinning process in the mid-20th century represented a significant turning point in the production of man-made fibers. From its inception, melt-spinning has continually evolved and adapted, reflecting the industry's unrelenting pursuit of innovation and efficiency. As the driving force behind the proliferation of synthetic fibers, melt-spinning's influence extends far beyond the textile industry, impacting sectors as diverse as healthcare, aerospace, and automotive. Its inherent versatility and scalability, coupled with the ongoing advancement in polymer science, suggest that melt-spinning will continue to define the trajectory of the global textile industry. This encapsulates the profound significance of melt-spinning, not only as a manufacturing process, but as a catalyst for technological progress and societal advancement.

Some polymeric fibres are spun by melting the polymer to a liquid state. The liquid is forced through the spinner opening under pressure and cooled by a jet of air to form the filament. Nylon can be spun by melting nylon polymer chips in a melt-extruder, a long heated cylinder that contains a rotating screw. The chips are melted as they travel the length of the heated zone of the tube, pumped to the spinerettes, and extruded into a cold air stream. Melt spinning requires no chemical reactions and no solvent recovery system, but is difficult to do because you need an exact temperature.

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