Fibrillated and Fine Fybrel® Fibrillated Polyolefin Fiber is a unique plastic fiber with a large specific surface area, low bulk density, low melting point, and excellently controlled particle dispersion, retention, and tenacity. By integrating Fybrel® Fibrillated Polyolefin Fiber with paper and nonwoven fabrics or compounding it with cement, paints, or coating materials, highly innovative materials, new characteristics, and unique functions become possible. This product is sold under the brand name "Fybrel®" in USA and Canada, and "SWP™" in other countries. Fibrillated and Fine Fybrel® Fibrillated Polyolefin Fiber is a unique plastic fiber with a large specific surface area, low bulk density, low melting point, and excellently controlled particle dispersion, retention, and tenacity. By integrating Fybrel® Fibrillated Polyolefin Fiber with paper and nonwoven fabrics or compounding it with cement, paints, or coating materials, highly innovative materials, new characteristics, and unique functions become possible. This product is sold under the brand name "Fybrel®" in USA and Canada, and "SWP™" in other countries.

Fybrel® is a fibrillated polyolefin fiber formed by flush processing. Unlike standard cut resin fiber, its fibrillated structure allows high fiber diameter distribution (branch portion 2 μm to stem portion 30 μm) for large specific surface volume. Fybrel® is a unique additive which acts as a modifier in enhancement agents, thixotropic agents, and dispersal agents and as a functionalizing agent in binders and thermal processing aids.

Physical Properties

Fybrel® illustration Fybrel® illustration

  • Micro-fibrillated structure

    Unique fiber structure made possible by Mitsui Chemicals' proprietary, state-of-the-art manufacturing technology

  • Large specific surface area

    Supports highly efficient particle trapping

  • Low bulk density

    Supports uniform dispersion in particle trapping

  • Melting point

    100〜135℃　Supports reliable heat sealing and heat molding

  • Hydrophilicity

    Supports uniform integration and compounding with particles and cellulose

Functions

  • Particle trapping

    By dispersing and compounding Fybrel® with particles in liquid, the particles become physically trapped between Fybrel®'s fibrillated fibers. Uniform dispersion of Fybrel® in liquid ensures consistent dispersion in particle trapping, a characteristic which is highly valued in cement board manufacturing using procedures such as the Hatschek process.

  • Viscosity control

    When Fybrel® is used in paints, coating material, and similar materials where shearing is applied, the fibrillated structure folds to make the influence on viscosity negligible. When inactive, the fibrillated structure returns to its previous condition resulting in higher viscosity. As a result, Fybrel® effectively maintains workability during mixing and use of paints and coatings while preventing dripping after application.

Fiber Comparison

  • Fybrel®

  • Natural Pulp

  • Polyolefin Fiber

Applications

  • Paper

  • Nonwoven fabric

  • Cement

  • Resins