Fiber Materials / Alfa Chemistry
Online Inquiry

Solution Spinning Technical Service

Solution spinning technology refers to a method in which a polymer solution is quantitatively extruded from a spinneret orifice, and the solution is solidified into a fiber through a coagulation bath or hot air or hot inert gas. Alfa Chemistry has mature solution spinning technology and process, and can provide you with related spinning services according to your requirements. Our fiber manufacturing division has a strong infrastructure and a team of well-trained and experienced experts.

Our Capabilities

Our Capabilities

For some polymers that have been decomposed before being melted, solution spinning technology is one of the alternative spin-forming technologies. Solution spinning technology is divided into wet spinning, dry spinning, and dry-wet spinning (dry-jet wet spinning). Combining extensive experience, Alfa Chemistry can recommend the most suitable solution spinning solution for you according to customer needs and substrates. In addition, detailed characterization and test reports are available, according to project requirements. Our solution spinning technology services include but are not limited to the following:

  • Wet Spinning Technical Service
    The fiber-forming polymer suitable for wet spinning has a decomposition temperature lower than the melting point or is easily discolored when heated, and can be dissolved in a suitable solvent. Examples include polyacrylonitrile fibers, polyvinyl alcohol fibers, viscose fibers, cupro fibers, and so on.

Schematic diagram of wet spinning deviceSchematic diagram of wet spinning device [1]

  • Dry Spinning Technical Service
    If a fiber-forming polymer can find a solvent with a lower boiling point and good solubility to make a spinning solution, then dry spinning technology is a candidate method. Common examples include acrylic, spandex, polyvinyl chloride fiber, etc.
  • Dry-Jet Wet Spinning Technical Service
    This method combines the characteristics of wet spinning and dry spinning, and is especially suitable for the molding and processing of liquid crystal polymers, so it is also often called liquid crystal spinning. At present, dry-jet wet spinning technology has been used in the preparation of polyacrylonitrile fibers, polylactic acid fibers, chitosan fibers, dibutyryl chitin, polyvinyl chloride fibers, aramid fibers, polybenzimidazole fibers, etc.

Schematic diagram of dry-jet wet spinning of PLA fiberSchematic diagram of dry-jet wet spinning of PLA fiber [2]

  • Others
    In addition to its spinning technology services for conventional polymers, Alfa Chemistry is also working on the development of new bio-based wet-spinning fiber production processes that are suitable for bio-based materials such as cellulose, lignin and proteins. We focus on functionality, sustainability and resource efficiency.

Cooperate With Us

We are confident that, by working with us, you will be satisfied with our expertise in the production and characterization of polymer solution spun fibers. We pride ourselves on our strengths in:

  • Experienced testing and research team
  • Meet customer needs at all stages
  • Efficient and cost-effective services
  • Complete and advanced infrastructure


  1. H.Qu, et al. Electronic Textiles, Smart Fabrics and Wearable Technology, 2015, 21-53.
  2. Bhuvanesh Gupta, et al. Applied Polymer Science, 2006, 100(2), 1239-1246.

Our products and services are for research use only.