Shenzhen Donggang New Material Technology Co., Ltd. is one of the leading manufacturers and suppliers of pbt filaments in China. Please feel free to wholesale bulk pbt filaments in stock here from our factory. All customized products are with high quality and low price. Contact us for quotation.
Product Introduction
With 34-year expertise in specialty synthetic fibers, Donggang independently develops and mass-produces PBT polyester bristles. It serves as the core dedicated raw material for popular brush heads in maternal-infant, personal-care and beauty sectors. Featuring cloud-like soft touch coupled with long-lasting supportive resilience and low water absorption, PBT is a cost-effective preferred option for mid-to-high-end oral-care, cosmetic and maternal-infant consumables.
Product Specification Parameters
|
Item |
Standard Parameters |
Customizable Range for Clients |
|
Substrate Material |
Modified PBT polyester |
Integral addition of antibacterial, anti-static, flame-retardant, bamboo-charcoal masterbatches available |
|
Filament Diameter Range |
0.07-2.00 mm |
Precisely adjustable in 0.01 mm increments |
|
Standard Filament Length |
1200 mm |
Custom cut-to-length ranging from 20 mm to 1200 mm |
|
Filament Style |
Standard straight filament |
Large-crimp filament, small-crimp filament, tapered filament |
|
Cross-Section |
Standard round shape |
Hollow, triangular, pentagonal and special-shaped cross-sections |
|
Color Options |
Full Pantone color matching |
Solid-color & dual-color composite filaments; no color bleeding or fading under high-temperature washing |
|
Melting Point |
220-230 ℃ |
Continuous high-temperature service is not recommended |
|
MOQ |
200 kg |
Small trial orders are accepted |
|
Sample Lead Time |
7-10 working days |
Free samples; client bears shipping cost only |
|
Production Lead Time |
15-30 working days |
Expedited delivery available by reserving dedicated production lines |
|
Standard Packaging |
25 kg moisture-proof export cartons |
Two options: bundled packing or industrial coils |
Core Performance Advantages of Tapered PBT Brush Filaments
Balanced flexibility & rigidity, skin-friendly and non-irritating
It delivers cloud-level softness together with stable supportive force. It maintains sufficient cleaning power without pricking gums or facial cuticles.
Anti-lodging after thousands of bends, resilience stays non-degraded
Adopting exclusive resilience-locking setting technology, it maintains stable performance after tens of thousands of repeated bends.
Ultra-low water absorption, resisting mildew growth in humid conditions
Thanks to low water absorption, it air-dries rapidly in long-term humid environments such as bathrooms and washstands, fundamentally curbing bacterial and mildew growth.
Stable ultra-fine tapering, high yield for dense tufting
Ultra-fine and even bristle tips are free of sharp spurs, well-suited for mass-production of electric toothbrushes and facial cleansing devices with tens of thousands of densely-packed ultra-fine bristles.
Self-Developed Core Production Technology
Integrated blending with special soft-touch PBT masterbatch
Special softening-resilience modified masterbatch is melt-co-extruded with virgin PBT chips at low temperature to reduce bristle rigidity while preserving supportive resilience.
Precision Drawing and Forming
Precise temperature control within the range, ensuring that the ultra-fine filament does not break or produce burrs.
Multi-stage gradient setting for resilience
Step-wise low-temperature curing stabilizes the fiber resilience structure. Resilience remains durable without lodging after warm-water soaking and long-term bending.
Five-stage closed-loop quality-control system
Raw-material hazardous-substance-leaching test → real-time on-line filament-diameter monitoring → dry-wet bending-resilience sampling inspection → 100-% inspection of finished bristle tips → re-inspection before shipment.
Multi-Dimensional Customization Services
Specification Customization: Freely adjustable filament diameter, filament length, bristle-root thickness, round / special-shaped cross-sections.
Heat-resistance-grade Customization: Standard regular grade.
Functional Modification Customization: Food-grade, antibacterial, bamboo-charcoal composite bristles.
Color Customization: Full Pantone color range; solid-color / dual-color composite filaments with no color bleeding or fading under high-temperature washing.
Bristle-style Customization: Straight filaments, large-crimp / small-crimp filaments, tapered filaments, special-cross-section bristles.
Main Application Scenarios
Ultra-dense bristle electric toothbrushes & gum-care toothbrushes for sensitive gums
PBT features ultra-low water absorption and cloud-soft ultra-fine tapered tips, resisting bristle lodging after long-term use.
Infant bath brushes & maternal-infant washing tools
PBT delivers fast-drying and low-water-absorption performance with non-sharp tips. Antibacterial-modified grades maintain long-term hygienic safety.
Fine nail-art & cosmetic small brush heads
PBT bristles are smooth and soft, resisting deformation when soaked in makeup remover and alcohol. It applies to compact fine cosmetic consumables such as eye-shadow brushes, lip brushes and nail-polishing brushes.
Why Choose Donggang
Dedicated R&D production lines for modified products. One-on-one engineer support provides tailor-made bristle solutions for four major sectors: household, sanitation, industry and beauty-care.
Full set of testing equipment; test reports issued for every batch to support factory audits for supermarkets and manufacture
Fast shipment for standard in-stock models. Production-line reservation shortens lead-time for modified custom orders, with stable bulk exports worldwide.
One-on-one technical support, delivering working-condition-adapted solutions for industrial high-temperature cleaning and food-baking-grade heat-resistant bristles.
Comprehensive after-sales service: returns & exchanges are permitted for batches failing specifications on wear resistance, dimension and appearance. Full-process technical support covers tufting and finished-product application issues.
1992
established in
31,250 m²
factory area
32
fully automatic wire drawing production lines
8,128 Tons
annual total output
Long-Term Global Partner Brands
Donggang maintains long-run stable cooperation with over 40 world-renowned brands. Soft-touch PBT bristles are supplied in consistent bulk quantities to global manufacturers of electric toothbrushes, facial cleansing devices, maternal-infant and cosmetic consumables. We serve global and cross-border traders, earning steady repeat orders with dependable quality.
Authoritative Certifications & Test Reports
PAHS
FDA
ISO9001
RoHS
Ortho benzene 17P
Frequently Asked Questions (FAQ)
Q1: What is the MOQ for PBT brush filaments? Are samples free of charge?
A1: Standard MOQ for PBT bristles is 200 kg. Small trial orders are available for standard in-stock colors. Samples are free of charge; the client only covers shipping fees. Samples will be dispatched within 7-10 working days.
Q2: How to select among PBT, PA6, PA610 and PA612?
A2: Choose PBT for supreme softness, maternal-infant and facial-cleansing applications. Select PA6 for economical normal-temperature cleaning. Go for PA610 for well-balanced mid-tier low-water-absorption requirements. Pick PA612 for high-precision scenarios.
Q3: Can PBT be used for long-term operation in high-temperature hot-air styling combs?
A3: It remains stable only for short-term warm-water conditions without modification for sustained high-temperature service. Modified PA66 / PA46 series are recommended for long-term hot-air equipment.
Q4: Does PBT support integral antibacterial modification?
A4: Yes, integral co-extruded antibacterial modification is fully supported. Unlike surface spraying, its bacteriostatic performance will not degrade after thousands of washes and complies with export standards for maternal-infant products.
Q5: Can filament diameter, dual-color and tapered filaments be customized separately?
A5: Filament diameter is adjustable in gradients from 0.08-2.00 mm. Solid-color and gradient dual-color composite filaments are available for color-matching. Customization is fully supported for ultra-fine tapered and spiral filaments.
Q6: Will PBT get mildewed or deformed under long-term water immersion?
A6: It features low water absorption and dries quickly in humid environments to resist mildew. It delivers low dimensional swelling-deformation rate under prolonged soaking.
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