Rising Trend of Synthetic Fibers in Paint Brush Industry: Optimal PBT and PET Blends for Superior Performance

As the price of boar bristles rises, more and more customers are opting for synthetic fibers as an alternative. Synthetic fibers are a type of material typically composed of polymers like PBT (Polybutylene Terephthalate) and PET (Polyethylene Terephthalate).

These polymers are mixed and extruded into filaments, which form the bristles we commonly use. Below are the characteristics of the two main materials:

 - PBT (Polybutylene Terephthalate): The higher the PBT content, the softer and more elastic the bristles become, making it ideal for producing bristles that need to be soft and heat-resistant. PBT has good heat resistance, maintaining stability up to 150°C, and possesses high mechanical strength and stability.

 - PET (Polyethylene Terephthalate): Compared to PBT, PET is harder, and bristles with higher PET content are stiffer, though they have less elasticity. PET is suitable for products that require higher stiffness.

 In the paintbrush industry, PBT and PET are used together because their properties complement each other. PBT provides softness and elasticity, while PET adds hardness. 

When chemically treated, they can be tapered, allowing for smoother paint application. Additionally, these materials are heat-resistant and have excellent mechanical properties, making them suitable for a wide range of brush applications.

Common applications include:

- PBT/PET: Paintbrushes, artist brushes, brooms, polishing brushes, toothbrushes, and horse brushes.

 In summary, many customers choose the ration of 30% PBT and 70% PET. This ratio ensures that the bristles are neither too soft nor too hard, with excellent resilience, meeting the needs of most customers. This combination not only enhances user comfort but also makes the paint application smoother and more even.

But for us, after years of testing and experience, we also provide more customized rations that are optimal for your specific needs through different ratios and diameters. This ensures you have advantages over your competitors from your special signature products, which can help you not only survive but also thrive in this extremely competitive market.