1.    Core Composition: PBT monofilament is crafted primarily from polybutylene terephthalate (PBT), characterized by a density of 1.3-1.4 g/cm³ and a melting point around 220-230°C.

    2.    Product Characteristics: Renowned for its excellent strength, elasticity, resistance to fatigue, and solvents, PBT is particularly sensitive to alkalis, making it ideal for use in specialty tapered filaments for various brushes.

    3.    Filament Production: Through a process called melt spinning, PBT is transformed into tapered filaments with finely eroded tips, designed for precision in brushes used in dental, cosmetic, and art applications.

    4.    Material Traits: PBT, a robust type of polyester, incorporates benzene rings and ester groups in its structure, offering greater hardness than nylon.

    5.    Fiber Attributes: The bristles made from PBT are known for their high tensile strength and elastic modulus, exceptional heat setting properties, and low moisture absorption, making them suitable for wet environments.

    6.    Versatility in Use: With a lower water absorption rate compared to nylon, PBT bristles maintain their stiffness in humid conditions, making them a practical alternative for various brushes.

    7.    Current Market Prices: The market price of PBT remains stable, reflecting its value and versatility in brush manufacturing.

    8.    Comparative Advantage: Material comparison charts indicate PBT’s superiority in durability and cost-effectiveness over materials like PP and PET.

    9.    Paint Brush Applications: PBT filaments are highly valued in the paintbrush industry for their flexibility, chemical resistance, and ability to retain shape, which enhances the longevity and effectiveness of brushes.