What is "Bicomponent Fiber" - Definition & Explanation
Last Updated on: 24-Feb-2023 (1 year, 3 months, 4 days ago)
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Bicomponent Fiber

Bicomponent fiber is a specialized type of textile fiber composed of two different polymer components within a single filament. It offers unique properties and performance characteristics, making it highly versatile for various textile applications. This article provides a detailed exploration of the meaning, types, tips for handling, and profiles of top international users and manufacturers of bicomponent fiber in the textile industry.

History and Origin

The concept of bicomponent fiber emerged in the mid-20th century as researchers sought to develop fibers with enhanced functionality and performance. The first commercial production of bicomponent fibers began in the 1960s, primarily driven by advancements in polymer processing technology.

Meaning and Definition

Bicomponent fiber refers to a type of textile fiber composed of two distinct polymer components arranged in a side-by-side, core-sheath, or segmented configuration within a single filament. These components can have different physical, chemical, or mechanical properties, resulting in fibers with unique characteristics.

Types of Bicomponent Fiber

There are several types of bicomponent fiber, including:

  1. Side-by-Side Bicomponent Fiber: In this type, the two polymer components are arranged longitudinally side by side, each forming a distinct portion of the filament. This configuration allows for differential dyeing, improved moisture management, and enhanced fiber strength.
  2. Core-Sheath Bicomponent Fiber: Here, one component forms the core of the fiber, while the other component surrounds it as a sheath. This design imparts specific functionalities, such as thermal insulation, moisture wicking, or antimicrobial properties, depending on the choice of polymers.
  3. Segmented Bicomponent Fiber: In segmented bicomponent fibers, the two components are arranged in alternating segments along the filament's length. This configuration enables precise control over properties such as elasticity, resilience, or absorbency.

Tips for Handling Bicomponent Fiber

When working with bicomponent fibers, it is essential to consider the following tips:

  • Temperature Sensitivity: Some bicomponent fibers may be sensitive to high temperatures, which can cause melting or deformation. Care should be taken during processing and garment care to prevent damage.
  • Compatibility: Bicomponent fibers may have different shrinkage rates or require specific processing conditions. It is crucial to ensure compatibility with other fibers or materials when blending or combining them in textile production.
  • Specialized Equipment: Depending on the type of bicomponent fiber, specialized equipment may be required for spinning, weaving, or knitting. Manufacturers and textile professionals should have access to suitable machinery for efficient production.
  • Optimal Processing Conditions: Each type of bicomponent fiber may have optimal processing conditions for achieving desired properties and performance. These conditions can include temperature, humidity, and processing speed, among others.

Top International Users and Manufacturers

Several top international users and manufacturers of bicomponent fiber in the textile industry include:

  • DuPont: DuPont, a global leader in materials science, offers various bicomponent fiber solutions for apparel, automotive, and industrial applications. Their innovative products, such as Sorona and Hytrel, are widely used in textiles.
  • Toray Industries: Toray Industries, a Japanese multinational corporation, produces bicomponent fibers like PBT (polybutylene terephthalate) and PET (polyethylene terephthalate), which are utilized in textiles for their excellent durability and versatility.
  • Freudenberg Performance Materials: Freudenberg Performance Materials develops bicomponent fibers for technical textiles, including automotive interiors, filtration, and hygiene products. Their offerings include fibers like Viledon and Evolon.
  • Teijin Limited: Teijin Limited, a Japanese chemical and pharmaceutical company, manufactures bicomponent fibers like Twaron and Technora, which find applications in protective clothing, ropes, and composites.
  • Lenzing AG: Lenzing AG, an Austrian company, specializes in producing bicomponent fibers such as TENCEL Luxe. These fibers are used in luxury textiles and fashion, offering exceptional comfort and sustainability.
  • Kuraray: Kuraray, a global specialty chemical company, offers bicomponent fibers such as Clarino and Vectran, known for their high strength, chemical resistance, and versatility in various textile applications.


Bicomponent fiber is a specialized type of textile fiber that incorporates two different polymer components within a single filament, providing unique properties and performance characteristics. With its various types and versatility, bicomponent fiber finds applications in a wide range of textile products. Leading international users and manufacturers, such as DuPont, Toray Industries, and Freudenberg Performance Materials, play a significant role in advancing the development and utilization of bicomponent fibers in the textile industry.

Bicomponent Fiber
Manufactured fiber made of continuous filaments, and made of two related components, each with different degrees of shrinkage. The result is a crimping of the filament, which makes the fiber stretchable.
Bicomponent Fibre
A fibre formed by the conjunction at a spinning jet, of two fibre-forming polymers of different properties.


a) The two components may be caused to merge approximately side by side (bilaterally), concentrically or as fibrils of one component in a matrix of the other. An example is the production of crimped fibre, e.g. a combination of polymers of different contractive properties.

b) Although formed by a natural process, wool and related animal fibres may exhibit a comparable dual structure of the cortical cells.

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