Engineered for injection molding, blown film extrusion, and blow molding processes. Outstanding heat resistance, color stability, and non-migration properties.
In the modern global thermoplastics industry, Polyethylene (PE) Color Concentrate Pellets—commonly referred to in commercial manufacturing as color masterbatches—serve as the vital bridge between synthetic raw polymers and functional, visually distinctive end products. Formulated through specialized thermal compounding, these pellets consist of ultra-high loadings of organic or inorganic pigments, tailored carrier resins (LDPE, LLDPE, or HDPE), and micro-dispersed chemical additives such as antioxidants, light stabilizers, and processing aids.
As industrial OEMs and plastic convertors transition toward automated extrusion and high-speed injection molding lines, direct pigment powder addition has become economically and environmentally obsolete. Dry pigments create airborne dust hazards, lead to batch-to-batch color variance, cause screw slippage, and increase clean-down downtime. High-concentration PE color concentrate pellets overcome these processing barriers by encapsulating pre-dispersed pigment particles inside a polymer carrier that seamlessly melts and diffuses within the host resin matrix during melt processing.
| Polymer Carrier Type | Melt Flow Index (MFI @ 190°C/2.16kg) | Pigment Loading Range | Thermal Stability Threshold | Primary Conversion Compatibility |
|---|---|---|---|---|
| LLDPE (Linear Low-Density PE) | 15 – 45 g/10min | 30% – 70% Concentration | Up to 260°C – 280°C | Blown Film, Agricultural Mulch, Lamination |
| LDPE (Low-Density PE) | 8 – 25 g/10min | 25% – 60% Concentration | Up to 240°C – 260°C | Flexible Packaging, Squeeze Bottles, Tubing |
| HDPE (High-Density PE) | 4 – 12 g/10min | 40% – 75% Concentration | Up to 280°C – 300°C | Injection Crates, HDPE Pipe Extrusion, Blow Drums |
| Universal PE/PP Hybrid | 20 – 50 g/10min | 35% – 65% Concentration | Up to 280°C | Multi-resin Molding, Recycled Resin Compounds |
Pioneering smart color chemistry, circular economy carriers, and AI-driven spectrophotometric color matching for next-generation manufacturing.
Leveraging twin-screw compounding extruders with optimized length-to-diameter (L/D) ratios of 48:1 and specialized kneading blocks to break pigment agglomerates down to sub-micron particle scales. This guarantees maximum color yield, zero pinhole defects in 10-micron blown films, and vastly reduced filter pressure values (FPV).
Addressing strict global sustainability mandates by developing Near-Infrared (NIR) reflective black concentrates. Unlike standard carbon black which absorbs optical sensors in automated recycling facilities, our NIR black pellets allow sorting machines to accurately identify and sort post-consumer PE packaging materials.
Integrating automated CIELAB L*a*b* color spectrophotometry with artificial intelligence algorithms to formulate fast, exact matches for Pantone, RAL, or custom customer swatches. This system predicts metamerism under multiple lighting sources (D65, A, F11) and compensates for polymer batch variations in real time.
Our PE color concentrate pellets are custom-engineered to deliver seamless performance across diverse global conversion technologies.
In agricultural mulch film, T-shirt shopping bags, and heavy-duty shipping sacks (FFS packaging), pigment agglomeration can cause film rupture or localized weakness. Changzhou Jiazhou’s high-concentration PE masterbatches utilize ultra-fine filtered organic and inorganic pigments that guarantee micro-dispersion. Our white masterbatch options contain up to 70% Titanium Dioxide (Rutile phase) treated with organic surface modifiers to prevent die build-up and optical hazing.
For industrial storage crates, beverage caps and closures, housewares, and automotive trim, injection color masterbatches require optimal Melt Flow Index (MFI) matching to ensure uniform mold filling without weld line defects or shrinkage distortion. Our PE masterbatches feature carrier matrices engineered for fast cycle times and crisp surface aesthetics (high gloss or matte finishes).
Infrastructure projects demand long-term structural integrity. Our specialized carbon black PE concentrate pellets for municipal water supply lines, gas pipes, and corrugated cable conduits strictly adhere to ISO 4427 / EN 12201 standards. Featuring high-purity furnace carbon black (20–25 nm particle size), they provide critical UV protection to prevent thermo-oxidative degradation during outdoor storage and service lives exceeding 50 years.
Extrusion blow molded products—ranging from small cosmetic bottles to 200-liter L-ring drums and agricultural chemical tanks—require masterbatches that retain ESCR (Environmental Stress Crack Resistance). Changzhou Jiazhou’s specialized PE color pellets ensure pristine wall thickness distribution, vibrant hue consistency, and complete chemical inertness against aggressive solvents.
Strategic geographical integration, automated gravimetric compounding lines, and robust raw material partnerships define Changzhou Jiazhou Plastic Products Co., Ltd.
Situated in Changzhou, Jiangsu Province—at the epicenter of Eastern China's petrochemical and plastics cluster—we maintain long-term strategic contracts with major resin producers (Sinopec, CNPC, SABIC). This guarantees continuous access to virgin low-density, linear low-density, and high-density polyethylene resins even during global feedstock panics.
Our 6,000 square meter factory operates modern twin-screw extrusion lines equipped with loss-in-weight gravimetric dosing feeders. This automated technology maintains raw material feed ratios within a strict ±0.2% tolerance, eliminating human metering error and assuring batch-to-batch color stability over long production runs.
Located within a 2-hour container transport corridor to the Port of Shanghai and Ningbo-Zhoushan Port, our logistics department facilitates streamlined maritime export procedures. Standard color pellet formulations ship within 7–10 days, while custom matched color samples ship globally via express courier within 48 hours.
Established in 2010, Changzhou Jiazhou Plastic Products Co., Ltd. (Address: No. 4-3, Shengli Road, Buyi, Zouqu Town, Zhonglou District, Changzhou, Jiangsu, China) is a premier OEM manufacturer specializing in high-concentration PE color masterbatch, black and white masterbatches, and functional additive masterbatches. With 16 years of technical compounding experience, our facility supplies high-performance masterbatches to plastics convertors across 100+ countries worldwide.
Meeting rigorous international standard frameworks to safeguard your production line, end-user health, and environmental safety.
Every batch of PE color concentrate pellets formulated in our facility complies with stringent chemical management frameworks across key market jurisdictions:
Our in-house analytical testing center executes rigorous quality gatekeeping prior to dispatching any batch:
Explore our wide collection of high-concentration color masterbatches, ready for global B2B procurement and custom sample evaluation.
In-depth technical responses from Changzhou Jiazhou's senior compounding engineers to help you optimize process parameters and material selection.
The standard recommended Let-Down Ratio (dosage percentage) typically ranges between 1.0% and 4.0% by weight, depending on the wall thickness of the target product and the required opacity. For ultra-thin blown films (under 20 microns), an LDR of 2%–3% ensures total coverage and tint uniformity. For injection molding thick-walled components (such as industrial crates or caps), an LDR of 1.0%–1.5% is generally sufficient due to our ultra-high pigment loading formulation (40%–70% pigment loading).
Carrier resin compatibility is critical to prevent delamination, tensile strength loss, or impact degradation. We utilize virgin LLDPE or high-MFI LDPE/HDPE carriers specifically matched to the melt rheology of your host polymer. When processing LLDPE or HDPE substrates, utilizing our specialized PE-carrier pellets guarantees complete thermodynamic mixing, preventing melt fracture, die build-up, or mechanical weakness at weld lines.
Our weather-resistant and anti-fading color concentrates incorporate high lightfastness pigments rated 7 to 8 on the International Wool Scale. Additionally, we integrate Hindered Amine Light Stabilizers (HALS) and UV absorbers (such as Benzotriazole compounds) directly into the masterbatch matrix. This dual-action chemical defense neutralizes free radicals generated by solar UV radiation, extending the service life of outdoor agricultural films, geomembranes, and stadium seating up to 5–10 years.
Our high-performance color masterbatch series is thermally stabilized to withstand process temperatures ranging from 260°C up to 300°C without thermal degradation, color shifting, or off-gassing. This high heat stability is achieved by incorporating thermal antioxidants (such as Hindered Phenol Irganox 1010 and Phosphite Irgafos 168) during the co-rotating twin-screw compounding process.
Clients can provide a physical plastic sample swatch, Pantone code, or RAL reference number along with details of their host polymer, processing method, and target let-down ratio. Our color lab utilizes spectrophotometer analysis to formulate an exact recipe within 24 hours. Free 1kg–5kg evaluation samples are produced on our pilot compounding extruders and dispatched via international express delivery within 48 hours.
Yes. We offer specialized "PCR-Enhancer" color concentrate formulations containing active odor-masking agents, chain extenders, and high-tinting pigments. These masterbatches mask the yellowing, grey tones, or thermal history variations inherent in recycled PE flakes or regrind pellets, enabling brands to maintain premium product aesthetics while meeting circular economy targets.
