Bicomponent Fiber

Customer Service & Information Page

Current U.S. Bicomponent Fiber Producers: BASF Corporation; DuPont Company; Fiber Innovation Technology, Inc.; KoSa; Solutia Inc.

Definition: Bicomponent fiber is comprised of two polymers of different chemical and / or physical properties extruded from the same spinneret with both polymers within the same filament.

Bicomponent Fiber Capabilities
Bicomponents can provide:

  • Thermal bonding
  • Self bulking
  • Very fine fibers
  • Unique cross sections
  • The functionality of special polymers or additives at reduced cost

Common Bicomponent Configurations
Most commercially available bicomponent fibers are configured in a sheath / core, side-by-side, or eccentric sheath / core arrangement.

Sheath / Core Side by Side Eccentric Sheath / Core

Advantages of Bicomponent Thermal Binder Fibers

  • Uniform distribution of adhesive
  • Fiber remains a part of structure and adds integrity
  • Customized sheath materials to bond various materials
  • Wide range of bonding temperatures
  • Cleaner, environmentally friendly (no effluent)
  • Recyclable
  • Lamination / molding / densification of composites.

Common Polymer Combinations in Bicomponent Thermal Binder Fibers

  • Polyester Core (250C melt point) with Copolyester Sheath (melt points of 110C to 220C)
  • Polyester Core (250C melt point) with Polyethylene Sheath (130C melt point)
  • Polypropylene Core (175C melt point) with Polyethylene Sheath (130C melt point)

Self Bulking Bicomponent Fibers

  • Created most often with side-by-side or eccentric cross section
  • Variation in orientation across the fiber causes crimping due to differential shrinkage or strain with applied heat or relaxation.

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About Tiered Discount Levels

You can combine cotton and rayon clothing & accessories to get the greatest discounts. Your discount is figured on the total number of cotton and rayon items we ship, not how many of each type, style or size. Mix and match them to get the best discount.

Example: adding 4 each of 3 different T-shirts in any sizes will give you the 12+ price on all 12 shirts.

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Some products may be excluded from discounts, and / or may discount only with themselves. If you have any questions at all please contact us toll free at 800-542-5227 (no buttons, just humans).

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