Shenzhen Donggang New Material Technology Co., Ltd. is one of the leading manufacturers and suppliers of pa612 brush filaments in China. Please feel free to wholesale bulk pa612 brush 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 nylon fibers, Donggang independently develops and mass-produces high-performance long-carbon-chain PA612 bristles, setting the high-end benchmark for nylon bristle materials. Its long-carbon-chain molecular structure endows PA612 with three core strengths: industry-leading ultra-low water absorption, superior fatigue resistance and chemical corrosion resistance. The virgin substrate has passed dual food-grade and medical-grade safety tests. With mature ultra-fine filament forming technology and micron-level diameter precision, it fits demanding precision applications in high-end oral care, cosmetics, semiconductors and medical industries.
Product Specifiation Parameters
|
Item |
Standard Parameters |
Customizable Range for Clients |
|
Substrate Material |
PA612 nylon |
Integral addition of antibacterial, anti-static, flame-retardant, bamboo-charcoal and other masterbatches available |
|
Filament Diameter Range |
0.08 mm–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 |
|
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 |
215-220 ℃ |
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
Industry-leading ultra-low water absorption
It features low equilibrium water absorption. It will not swell or sag after prolonged exposure to steam washing, disinfectant reagents and fruit-vegetable detergents, greatly extending service life of finished products.
Superior wear & fatigue resistance, anti-lodging after thousands of bends
The long-carbon-chain structure delivers exceptional toughness and resilience with low frictional loss under alternating dry-wet conditions. It resists fuzzing, splitting and fracture under high-frequency scrubbing and high-speed roller polishing, effectively lowering brand's consumable replacement frequency and restocking costs.
Chemical corrosion resistance for stringent precision working conditions
Resistant to weak acids, weak alkalis, alcohol, cosmetic solvents, medical disinfectants and food-grade cleaning fluids. No corrosion or brittleness occurs under long-term soaking. It is suitable for precision manufacturing scenarios such as semiconductor wafers and medical instruments as well as high-end cosmetics, where contamination from bristle leachables must be avoided.
Micron-level precision wire-drawing for stable ultra-soft bristle forming
Imported low-speed constant-temperature precision extruders enable full-process on-line diameter monitoring with controllable tolerance of ±6%. It delivers stable mass production with even bristle tips free of sharp spurs. No splitting or shedding occurs during tufting, well-suited for dense tufting of high-end soft-bristle toothbrushes and fine cosmetic brush heads.
Self-Developed Core Production Technology
Integrated blending with special low-water-absorption PA612 long-carbon-chain masterbatch
Virgin PA612 pellets are melt-integrated at high temperature together with low-water-absorption & wear-resistant masterbatch.
Segmented gradient constant-temperature precision wire-drawing & forming
Multi-zone gradient low-temperature stretching slowly relieves internal stress inside fibers.
Gradient setting for enhanced resilience
Step-wise temperature-ramping curing stabilizes the wet-state resilience performance of filaments.
Multi-Dimensional Customization Services
Specification Customization: Freely adjustable filament diameter, filament length, round / special-shaped cross-sections.
Heat-resistance-grade Customization: Standard regular grade, slightly upgraded heat-resistant modified grade.
Functional Modification Customization: Food-grade, antibacterial, negative-ion, anti-static, flame-retardant, 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, special-cross-section bristles.
Four Major Application Scenarios
High-end electric toothbrushes & soft-bristle oral-care products for sensitive gums
PA612 features ultra-low water absorption and anti-lodging performance after thousands of bends. Its soft tips will not irritate enamel or gums. It is ideal for mass production of cross-border high-end electric toothbrushes and children's gum-care toothbrushes, serving as the top choice for import substitution for premium brands.
Precision cosmetic & nail-art fine brush heads
PA612 offers balanced hardness with smooth burr-free surface. It picks up powder evenly without irritating skin or nail surfaces, and resists cosmetic solvents such as makeup remover and alcohol.
Precision polishing roller brushes for semiconductors & glass optical surfaces
PA612 boasts low water absorption, low dust generation and stable wear resistance with constant dimensions under both dry and wet polishing. With uniform and smooth diameter, it prevents bristle shedding from contaminating wafers and optical lenses on automated polishing lines, acting as premium raw material dedicated to precision electronics manufacturing.
Why Choose Donggang PA612 Brush Filaments
Fast shipment for standard in-stock models. Production-line reservation shortens lead-time for modified custom orders, with stable bulk exports worldwide.
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
We maintain long-term stable cooperation with world-renowned brands. Leveraging core strengths of ultra-low water absorption and superior wear resistance, our premium PA612 bristles are steadily supplied to global high-end personal-care, medical-device and semiconductor precision-processing manufacturers with consistent repeat orders from premium clients.
Authoritative Certifications & Test Reports
PAHS
FDA
ISO9001
RoHS
Ortho benzene 17P
Frequently Asked Questions (FAQ)
Q1: What is the MOQ for PA612 brush filaments? Are samples free of charge?
A1: Standard MOQ for PA612 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 PA612, PA610 and modified PA66 according to their key differences?
A2: Modified PA66 targets medium-high-temperature scenarios with relatively high water absorption. PA610 serves as a well-balanced mid-tier grade with low water absorption. PA612 is the high-end benchmark for ultra-low water absorption. It takes the lead in wear resistance, chemical resistance and wet-state resilience, suitable for long-term humid environments, precision-driven and high-end finished products.
Q3: Can PA612 be used for long-term high-temperature service in hot-air styling combs?
A3: It performs stably for short-term use only and is not fit for sustained temperatures above 200 ℃. Modified PA66 / PA46 series are recommended for long-term hot-air equipment.
Q4: Can filament diameter, color and special-shaped cross-sections be customized separately?
A4: Filament diameter is adjustable in 0.01 mm increments ranging from 0.08-2.0 mm. Full-range Pantone solid-color and dual-color composite filaments are available. Customization is fully supported for straight filaments, crimped filaments and hollow / polygonal special-shaped cross-sections.
Hot Tags: pa612 brush filaments, China pa612 brush filaments suppliers, factory
