The production of general brushes begins with the consideration of material selection, especially for bristle filaments where the choice of material is crucial. Many people do not know much about the performance characteristics of PBT brush filaments. It was initially developed as a replacement for horse hair and is a type of polyester material that can be produced in a variety of colours, diameters, shapes and lengths.

PBT bristles have been considered an economical alternative to many bristles and are chemically composed of polybutylene terephthalate, a type of polyester material. Close to PA66 bristles in terms of performance and cheaper per unit than PA66 bristles, it is one of the economical alternatives to nylon bristles and is a cost-effective bristle material.

The elasticity of PBT bristles is mainly related to hardness, the definition of elasticity is the ability of the material itself to resist deformation, simply put, it is the degree to which the material can be easily bent.

The advantages of PBT bristles are: moderate resilience, low moisture absorption, good chemical stability, excellent toughness and impact strength, the hardness of PBT bristles is between nylon bristles and PP bristles, moderate hardness and resilience, can replace nylon bristles material, and PBT bristles are less water absorption, so it can work in wet water environment, not easy to breed bacteria, fungi and mould.

It is suitable for processing disposable toothbrushes, hoover brushes, nail polish brushes, industrial brushes and cleaning brushes, etc. Its good tensile properties and toughness also make it suitable for making strings.