Technology Future of eco-friendly materials

Keep evolving Technology that continues to evolve to ensure the coexistence of people and nature

The Teijin Group focuses on the environmental business. By making the most of the latest technologies, we produce a wide variety of eco-friendly materials that contribute to solving environmental problems, including resource depletion, increased CO2 emissions, and environmental pollution. While striving to make people’s daily lives better by creating new value, we aim to achieve a world that exists in harmony with nature and to contribute to the realization of a sustainable society.

  • Discarded plastic PET bottles, clothes, and fiber waste

  • Recycling

  • Raw materials

Converting them into a variety of products

  • Sportswear
  • Uniforms
  • Medical clothing
    Medical clothing
  • Suits
  • Dresses
  • Clothing for mountain climbing
    Clothing for mountain climbing
  • Bag for elementary school students
    Bag for elementary school students
  • Train seats
    Train seats
  • Curtains
  • Automobile interior materials
    Automobile interior materials


Although it is recycled polyester, ECOPET® is not only environmentally-friendly but also has many functionalities and sensitivities added by changing fiber shapes and thicknesses or by processing. The advancement of fiber technology has enabled ECOPET® not only to deliver new value, such as recycling and environmental friendliness, but also to continue evolving as a material that makes people’s daily lives better.

Functionalities added by fiber shapes



This new functional polyester has a unique cross-sectional shape comprised of four flat mountains.
Features multi-functionality, including softness and draping, sweat absorption, quick-dry, anti-see-through, and windbreak functions.
  • Grooves created on the fiber surface by four mountains → Sweat-absorption and quick-dry functions achieved by capillary action
  • Irregularities created on the fiber surface by four mountains → Anti-see-through function achieved by the scattering of passing light
  • Low bending rigidity due to the flat cross-sectional shape → Soft and draping function


Polyester fiber with a new feel, featuring high sweat absorption, quick-dry, dry-touch, and lightweight functions
  • Water absorption and drying characteristics: Twice as high as those of conventional products, making it a non-sticky, dry-touch material
  • Wash durability in terms of sweat absorption: More than twice that of conventional products
  • Lightweight


  • By leveraging our unique technology to create yarn with odd cross-sectional shapes, we arranged eight protruding objects radially on a hollow fiber to let the gaps between fibers created by the eight protruding objects provide different functions.
  • Potential for broader use that can be achieved by combining it with other materials via false twisting, combination of different filaments, or twisted yarn spinning
Sweat absorption, quick dry, lightweight, heat shield, heat insulation, and dry touch


Light, warm, thermal polyester fiber that can contain lots of dead air due to its hollow structure
  • Rate of hollowness: 35% to 40%
  • So light it floats on water
  • High elasticity and firmness

Functionality and sensitivity achieved by the thinness of the fibers



  • Special polymer and microfiber of 0.3 dtex (single yarn) created via ultrafine fiber yarn-making technology
  • Directly spun yarn that is different from split fibers or super thin yarn of the Kaito type
  • Tender feel achieved by ultrafine fibers


  • The surface area of textiles made of nanofibers is dozens of times larger than that of conventional fibers.
  • Compared to conventional fibers, it has higher water absorption and adsorption performance and a higher anti see-through property.
  • The texture of the textile is soft, causing little skin irritation.
  • It has a wide range of uses, such as functional sportswear, innerwear, skin-care products, antibacterial filters, and precision polishing cloths.

Characteristics obtained by pasting fibers together



Highly crimped fiber, natural appearance, stretch textile, low luster hybrid worsted-type material
  • Features a feel with a wool-like fluffiness, spun-touch, resilience, elasticity, and firmness.
  • Wool-like natural appearance, low luster appearance, and appearance with profound colors
  • Products that have stretch and anti-wrinkle properties, that look nice when tailored, and that are easy to care for

Functionalities achieved by processing



  • Highly water-resistant, moisture permeable material created by using ECOPET®
  • 100% waterproof and moister permeable polyester films are used.
  • Both comfort and environmental friendliness are achieved without making any compromises.
  • The base cloth is made of highly water-repellent microfiber fabric.


Vertical nonwoven fabrics that have fibers lined up vertically can become a high-quality fiber cushioning material featuring high repellence, bulkiness, lightweight, and high breathability by combining them with high-performance Raw staple fiber. Moreover, they are easy to bend and mold. Sound absorption can be controlled by combining them with a surface material or via pressing.