Shenzhen Donggang New Material Technology Co., Ltd. is one of the leading manufacturers and suppliers of pbt double-tapered toothbrush filaments in China. Please feel free to wholesale bulk pbt double-tapered toothbrush filaments in stock here from our factory. All customized products are with high quality and low price. Contact us for quotation.
Product Introduction
Synatra, Donggang's in-house oral-care brand, develops PBT spiral double-tapered toothbrush filaments. Featuring two innovative core technologies: 3D spiral grooves and ultra-fine double-ended tapers, it perfectly solves four major industry pain-points of ordinary bristles: one-sided cleaning effect, small contact area, easy lodging of electric brush heads, and mildew growth in humid conditions.
Manufactured by integrated co-blending of proprietary high-toughness food-grade PBT chips, the 3D spiral grooves greatly enlarge frictional contact area. Bidirectional tapered tips deliver dead-zone-free cleaning during forward-and-backward brushing. Thanks to the material's low water-absorption property, bristles dry rapidly in humid bathroom environments and inhibit the reproduction of plaque-causing bacteria.
Product Specification Parameters
|
Item |
Standard Parameters |
Customizable Range for Clients |
|
Substrate Material |
Food-grade modified PBT polyester chips |
Integral co-extrusion with antibacterial, fluoride-infused, negative-ion and bamboo-charcoal functional masterbatches available |
|
Filament Diameter Range |
0.07 mm-0.20 mm |
Precisely adjustable in 0.01 mm increments |
|
Standard Filament Length |
25-35 mm |
Multi-range customizable filament lengths |
|
Composite Process |
Integrated spiral twisting + synchronous double-end tapering, overall tapering rate ≥90 % |
Two spiral textures: loose spiral / tight spiral; three-grade bidirectional taper length: short / medium / long; ultra-soft tips ＜0.01 mm |
|
Color Options |
Full Pantone color matching |
Segmented dual-color composite filaments (different colors for shaft and tips); no color bleeding or fading after prolonged warm-water washing |
|
Bristle Style |
Standard spiral double-tapered filaments |
Spiral double-tapered filaments with various special-shaped cross-sections |
|
Standard MOQ |
200 kg |
Small trial orders accepted for in-stock standard colors |
|
Sample Lead Time |
7-10 working days |
Free samples; client bears shipping cost only |
|
Mass Production Lead Time |
15-30 working days |
Expedited delivery available by reserving exclusive spiral-production lines |
|
Standard Packaging |
25 kg moisture-proof export cartons |
Two options: bundled packing or industrial coils |
Core Differentiated Advantages of PBT Spiral Double-Tapered Filaments
Dual-structure of spiral grooves plus bidirectional double tapers for full-range deep stain removal
The 3D spiral grooves enlarge friction area, while 0.01 mm ultra-soft tips on both ends can penetrate interdental spaces and gingival crevices during forward, backward and lateral brushing. It greatly improves removal efficiency for tobacco stains, tea stains and dental plaque.
Resilience setting, permanent anti-lodging under high-frequency electric-toothbrush vibration
Dual resilience-locking technology for tapered ends and spiral shaft prevents bending, splitting and middle-section sagging after tens of thousands of electric reciprocating vibrations. Service life of finished toothbrushes is extended, solving consumers' pain-point of short-life electric brush heads and helping brands improve repurchase rate.
Ultra-low-water-absorption spiral flow-guide structure, anti-bacterial performance in humid environments
Low-material water-absorption combined with spiral structure enables fast water drainage and evaporation.
Self-Developed Exclusive Composite Production Technology
Integrated co-blending of high-toughness PBT dedicated for spiral double-tapered bristles
Custom-formulated against bristle-breakage risks caused by twisting and double-end tapering. It balances spiral-twist toughness and softness of both tapered ends and reduces bristle-breakage loss during tufting from the raw-material stage.
Precision extrusion & forming
Uniform multi-zone stretching produces smooth burr-free filaments with high diameter consistency.
Integrated composite process of spiral twisting plus synchronous double-end tapering
Proprietary automated composite equipment performs uniform spiral twist-setting.
Multi-Dimensional Customization Services
Size, texture and taper customization: adjustable filament diameter; loose / tight spiral textures; freely-combinable short / medium / long bidirectional taper length; optional filament lengths.
Functional Modification Customization: Integral co-extruded spiral double-tapered filaments with food-grade long-acting antibacterial, anti-caries fluoride-infused, negative-ion oral-care and bamboo-charcoal adsorption functions.
Color Customization: Full Pantone color range, dual-color composite filaments, no color fading under warm-water washing.
Four Main Application Scenarios
High-end wide-head full-coverage manual adult toothbrushes
Spiral double-tapered bristles fully fit tooth surfaces for deep removal of stubborn dental stains. It serves as core raw material for mid-to-high-end supermarket and cross-border hit adult toothbrushes.
High-frequency vibrating electric replacement brush heads
Bidirectional spiral structure maintains shape after thousands of vibrations and delivers consistent stable interdental cleaning.
Special-purpose toothbrushes for orthodontic and periodontally-sensitive users
Spiral shaft cushions friction; low-moisture quick-drying property inhibits bacterial growth. Specially developed for users with fragile gums and orthodontic appliances.
High-density children's toothbrushes
Spiral double-tapered bristles are flexible and dense with no hazardous-substance leaching. It is the main raw material for high-end children's wide-head toothbrushes.
Why Choose Donggang PBT Spiral Double-Tapered Toothbrush Filaments
1. One of the few domestic Chinese manufacturers holding patents for integrated composite technology of spiral-twisting and bidirectional synchronous tapering, with more than 30 utility-model patents for bristle modification, tapering and spiral wire-drawing.
2. Dedicated automated production lines for spiral double-tapered bristles with monthly capacity of 150 tons for stable on-time delivery. Lead-time can be shortened by reserving production lines for antibacterial and dual-color custom orders.
3. Comprehensive end-to-end after-sales guarantee: returns & exchanges supported for non-conforming batches regarding spiral texture, bidirectional taper, water-absorption rate and tufting fastness. Full-process technical support covers production problems such as bristle breakage during 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
Leveraging core differentiated selling-points of bidirectional deep cleaning, anti-lodging and quick-drying properties, high-end PBT spiral double-tapered bristles are steadily supplied to manufacturers of adult toothbrushes, electric replacement brush heads and orthodontic-sensitive toothbrushes. It earns consistent repeat orders from mid-to-high-end oral-care brands worldwide with reliable quality.
Authoritative Certifications & Test Reports
PAHS
FDA
ISO9001
RoHS
Ortho benzene 17P
Frequently Asked Questions (FAQ)
Q1: What is the MOQ for spiral double-tapered bristles? Are samples free of charge?
A1: Standard MOQ for spiral double-tapered bristles is 200 kg. Small trial orders are available for standard in-stock colors. All samples are free of charge; the client only bears shipping fees. Samples will be dispatched within 7-10 working days.
Q2: Can spiral double-tapered bristles be modified with antibacterial or fluoride-infused functions?
A2: Integral co-extrusion embedding antibacterial, fluoride-infused and negative-ion masterbatches is fully supported. Functions are permanently integrated inside bristle matrix instead of surface coating; performance will not degrade after washing.
Q3: Are spiral double-tapered bristles compatible with copper-free high-speed dense tufting machines?
A3: Fully compatible. Uniform spiral texture, symmetric double-end tapers and smooth burr-free bristle surface prevent material jamming, bristle shedding and skewed bristles during high-speed tufting, greatly improving yield rate of high-density multi-thousand-bristle brush heads.
Q4: What uniformity can spiral bidirectional tapering achieve?
A4: Overall bidirectional tapering rate stably reaches ≥90 %. Tip diameter of ultra-soft grade can be controlled below 0.01 mm.
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