Explore our top-tier masterbatch formulations developed with micro-milled pigments and optimized carrier resins, engineered specifically for rigorous polymer processing demands.
A comprehensive technical breakdown of raw material selection, crystal morphology, disperse phase rheology, and processing metrics that define premium white masterbatch performance.
In polyolefin coloration, the choice of white pigment dictates opacity, weatherability, and mechanical integrity. We strictly utilize Rutile-phase Titanium Dioxide over Anatase due to its crystal structure density (refractive index of 2.73 vs 2.55). The superior light-scattering capability of Rutile TiO₂ allows plastic processors to achieve maximum opacity at significantly lower let-down ratios (LDR).
Particle size distribution is controlled precisely within the range of 0.20 to 0.30 microns. This specific range corresponds directly to half the wavelength of visible light (~0.5 µm), maximizing Mie light scattering efficiency. Furthermore, our TiO₂ particles undergo surface modification using inorganic dense alumina (Al₂O₃) and silica (SiO₂) coatings, combined with organic silane coupling agents. This encapsulation prevents photocatalytic degradation, suppresses yellowing in outdoor applications, and reduces moisture absorption to under 0.2%.
A frequent failure mode in masterbatch application is agglomeration caused by viscosity mismatch between the masterbatch carrier resin and the virgin polymer matrix. Changzhou Jiazhou Plastic utilizes high-grade, virgin Low-Density Polyethylene (LDPE), Linear Low-Density Polyethylene (LLDPE), or Polypropylene (PP) carrier resins with tailored Melt Flow Indexes (MFI ranging from 10 g/10min to 45 g/10min at 190°C/2.16kg).
By optimizing the shear rate inside our continuous co-rotating twin-screw extruders (L/D ratio of 44:1), we ensure that the TiO₂ agglomerates are fully broken down into primary particles. This results in an exceptionally low Filter Pressure Value (FPV) below 0.5 bar/g, preventing screen pack clogging during high-speed blown film extrusion and eliminating die-lip buildup (drool).
| Masterbatch Grade | TiO₂ Content (%) | Pigment Phase | Carrier Polymer | MFI (190°C/2.16kg) | Heat Stability | Primary Processing Application |
|---|---|---|---|---|---|---|
| Jiazhou White 7080 | 70% Rutile | Dense Alumina/Silica | LLDPE / LDPE | 22 g/10min | 280°C - 300°C | Ultra-thin Blown Film, Liquid Packaging |
| Jiazhou White 6050 | 60% Rutile | Alumina Surface Coated | PE / Universal | 16 g/10min | 260°C | High-Speed Injection Molding, Household Goods |
| Jiazhou White 5040-PP | 50% Rutile | Special Organic Treated | Homopolymer PP | 35 g/10min | 280°C | PP Raffia, Woven Sacks, Non-woven Fabrics |
| Jiazhou White Eco-50 | 50% TiO₂ + CaCO₃ | Standard Rutile | Recycled PE | 8 g/10min | 240°C | Agricultural Pipe, Construction Sheets, Garbage Bags |
Custom engineered white masterbatch formulations designed to solve specific processing challenges across global industrial and commercial markets.
Designed for multi-layer co-extrusion (ABA, ABC lines) producing milk pouches, food barrier films, and express courier bags. Provides superior opacity at 15 to 40 micron film thicknesses while maintaining gas tightness, sealability, and high-speed printability without surface corona decay.
For home appliances, automotive interior parts, and medical diagnostic hardware. Delivers uniform color distribution without weld lines or sink marks. Formulated with heat stabilizers to prevent thermal degradation during high mold cycle pressures.
Ideal for PS, ABS, and PP thermoformed containers, disposable cups, and refrigerator liners. Ensures high flexural modulus retainment, even surface gloss, and absolute resistance to stress cracking under deep-draw conditions.
Incorporates Hindered Amine Light Stabilizers (HALS) alongside non-photocatalytic Rutile TiO₂. Extends agricultural film service life against intense UV radiation, pesticides, and extreme ambient temperature fluctuations in desert and tropical climates.
Optimized for HDPE and PP-R water supply pipes, agricultural irrigation tubes, and cable ductings. Guarantees complete opacity to prevent internal algae growth while enhancing long-term hydrostatic strength.
Specialized low-viscosity PP white masterbatch developed for meltblown and spunbond non-woven fabrics. Highly filtered to prevent spinneret hole clogging during medical mask and sanitary product manufacturing.
Anticipating regulatory shifts, circular economy demands, and next-generation polymer innovations through focused R&D investments.
To align with global ESG mandates, our lab has engineered white masterbatch grades using up to 50% Post-Consumer Recycled PE/PP carriers. Advanced optical brighteners and neutralizing additives are incorporated to compensate for the natural gray/yellow undertones of recycled base resins, restoring bright L* values above 94.
Responding to single-use plastic bans across North America and Europe, Changzhou Jiazhou has commercialized fully compostable white masterbatch. Utilizing Polylactic Acid (PLA) and Polybutylene Adipate Terephthalate (PBAT) carriers, these grades comply strictly with EN 13432 and ASTM D6400 soil degradation standards.
Standard white masterbatch can interfere with optical sorting equipment at recycling plants. Our next-gen formulations feature specialized pigment treatments that do not absorb NIR spectrum wavelengths, facilitating automated polymer sorting in circular waste streams.
Leveraging Changzhou's world-class chemical industrial cluster to guarantee consistent raw material access, unbeatable scale, and rapid global delivery.
Changzhou Jiazhou Plastic maintains long-term strategic contracts with China's largest TiO₂ sulfate and chloride process miners in Sichuan and Shandong. This direct integration insulates our global buyers from international titanium ore price volatility and guarantees continuous raw material availability during global supply disruptions.
Our modern plant houses 10 automated high-torque twin-screw extrusion lines with gravimetric loss-in-weight feeders. This setup ensures real-time control over pigment concentration tolerances within ±0.3%, producing uniform, dust-free spherical pellets that minimize feeder bridge building.
Situated near Shanghai and Ningbo deep-water ports, our logistics network provides seamless FOB/CIF/DDP international shipping. We maintain standard stock reserves for core grades, guaranteeing order dispatch within 15 calendar days worldwide.
Rigorous international compliance framework ensuring risk-free integration into consumer, food-contact, and medical supply chains.
Certified safe for direct food contact applications. Free from unreacted monomer residuals or heavy metals.
Fully compliant with European Union SVHC (Substances of Very High Concern) limits and RoHS heavy metal bans.
Standardized Quality Management and Environmental Management protocols governing every step of production.
Formulated without animal-derived lubricants, fatty acids, or stearate processing aids.
Expert technical answers addressing common engineering queries, let-down ratios, color spectrophotometry, and processing parameters.
Select from our comprehensive series of color, white, black, and specialty metallic masterbatches tailored for international plastic manufacturing.
