PBT bristle for producing industrial brushes is monofilament, and its full name is polybutylene terephthalate. This filament is not widely used as PA or PP filament. But for some special application, it has to be PBT filament.The color of PBT is white and semitransparent. It can be customized to black, yellow, red and many more other colors. Characteristics of PBT filament is similar to PA filament. They are both with high resilience. Diameter range is from 0.07mm to 3.0mm. Density is 1.3 to 1.4g/cm2 . The shape can be as following:Here I will explain why we choose PBT filament for industrial brushes. Below are its advantages which other material don't have_ Toughness Impact resistance Melting point: 225℃ Low moisture absorption Due to above features, PBT filament can be used for some special areas, such as dry ski slop and sea water treatment. We have PBT strip brush, PBT roller brush and PBT belt brush which are suitable for these application.For dry ski slope, the surface give strong force to filament. Thanks to impact resistance and low moisture absorption of PBT, it is a ideal choice to use PBT strip brush.PBT roller brush and PBT belt brush can be used underwater and sea water. This material help largely increase service life of industrial brushes for this industry.