High-concentration pigment dispersions optimized for cast film extrusion, blown film lines, and precision injection molding.
The global shift toward high-speed chill-roll cast polyolefin extrusion demands unyielding precision in masterbatch formulations to prevent melt fracture, pinholes, and thermal degradation.
Unlike blown film, cast film extrusion operates at line speeds exceeding 400 to 600 meters per minute. At these velocities, masterbatches must demonstrate instantaneous shear thinning, low neck-in, and rapid thermal dispersion to eliminate gauge variation and optical hazing across thin-gauge (8–25 micron) LLDPE/LDPE substrates.
Cast film blue PE masterbatch serves critical roles in medical backsheets, surgical drapes, and feminine hygiene barrier layers. Formulations require absolute purity, heavy-metal-free compliance, zero phthalates, and strict adherence to European REACH (EC 1907/2006) and US FDA 21 CFR 178.3297 regulations.
Global plastic convertors face intense margin pressures, driving the industry toward downgauging. High-potency blue masterbatches with pigment loading up to 40-50% allow lower let-down ratios (LDR of 1.0% to 2.5%), drastically cutting freight costs while preserving film opacity and tensile strength.
Accomplishing streak-free, pinhole-free coloration on high-output cast film lines requires strict mastery over melt index matching, organic pigment dispersion physics, and surface tension management.
The carrier polyethylene resin must closely mirror or exceed the Melt Flow Index (MFI) of the host polymer matrix. For cast film applications using LLDPE or mLLDPE (MFI 2.0 to 4.5 g/10min at 190°C/2.16kg), Changzhou Jiazhou utilizes specialized low-molecular-weight narrow-MWD (Molecular Weight Distribution) Polyethylene carriers. This prevents phase separation, melt strength distortion, and gauge variation along the chill roll interface.
Our Cast Film Blue PE Masterbatch incorporates premium-grade Organic Phthalocyanine Blue (Pigment Blue 15:3 / 15:1). Utilizing crystal-stable beta-modification phthalocyanine copper complexes provides exceptional heat stability up to 300°C without color shade shifting. The pigment undergoes triple-stage shear dispersion, reducing agglomerate sizes below 1.5 microns to eliminate pinhole formation in thin films.
High extrusion temperatures can cause standard additives to volatilize, producing die-lip deposits (plate-out) that scratch film surfaces. Jiazhou formulates its cast film masterbatches with high-purity thermal stabilizers, primary/secondary antioxidant packages (Irganox 1010 / Irgafos 168), and ultra-clean dispersing waxes, suppressing die build-up during continuous 72-hour operational runs.
| Technical Parameter | Standard Blown Film Grade | High-Precision Cast Film Grade (Jiazhou Benchmark) | Testing Methodology Standard |
|---|---|---|---|
| Carrier Polymer Base | Standard LDPE / LLDPE | High-Flow Metallocene PE / Tailored Low-MW LDPE | ISO 1133 / ASTM D1238 |
| Filter Pressure Value (FPV) | 1.5 – 3.0 bar/g | < 0.8 bar/g (Ultra-Pure) | EN 13900-5 (500 mesh screen) |
| Pigment Particle Size (D99) | < 5.0 microns | < 1.5 microns | Laser Diffraction Particle Size Analyzer |
| Melt Flow Index (190°C / 2.16kg) | 4.0 – 12.0 g/10min | 15.0 – 30.0 g/10min | ISO 1133 |
| Heat Thermal Stability | 220°C – 240°C | 260°C – 300°C | DIN EN 12877-2 |
| Lightfastness (Wool Scale 1-8) | Grade 6 – 7 | Grade 7 – 8 (Maximum) | ISO 105-B02 |
| Volatile Content (%) | < 0.25% | < 0.05% | Thermogravimetric Analysis (TGA @ 200°C) |
From medical-grade micro-porous breathable backsheets to high-stretch industrial pallet wrapping, Jiazhou masterbatches deliver flawless tinting and functional consistency.
Utilized in cast PE breathable and non-breathable backsheet films for diapers, sanitary napkins, and surgical drapes. Formulated for ultra-soft haptics, non-irritating skin contact, and zero pigment migration when exposed to synthetic body fluids.
Engineered for multi-layer co-extrusion (3-layer, 5-layer, or 7-layer cast lines). Provides clear translucent or opaque blue tinting for logistics security and visual identification without compromising film puncture resistance or cling performance.
Compliant with global food contact regulations. Blue color coding is widely used in food processing plants for easy visual detection of packaging fragments, ensuring stringent food safety management (HACCP compliant).
Used in self-adhesive cast PE protective films applied to stainless steel, aluminum sheets, and architectural glass. Guarantees zero residue, low gel count, and uniform optical density across wide-width cast extrusions.
Operating a state-of-the-art 6,000m² facility in Jiangsu, China, equipped with high-torque twin-screw compounding lines, automated gravimetric feeders, and computer-controlled spectrophotometry.
Our plant houses high L/D ratio (44:1 to 48:1) twin-screw extruders engineered specifically for ultra-fine dispersion. This extended residence time ensures pigment agglomerates are broken down under intense shear fields, completely eliminating color specks and streaks in cast films.
Every production batch undergoes mandatory testing: Filter Pressure Value (FPV) testing according to EN 13900-5, Melt Flow Index analysis, moisture titration (Karl Fischer < 0.05%), and Datacolor Spectrophotometer color matching to ensure ΔE < 0.5 compared to master control standards.
We provide full technical documentation packages for international B2B buyers, including RoHS 3 (EU 2015/863), REACH SVHC declarations, FDA 21 CFR compliance letters, Heavy Metal Test Reports (EN 71-3), and Halogen-Free certification.
Direct technical solutions from our Senior R&D Chemists to address common processing defects during high-speed PE cast film production.
Root Cause: High concentration of low-molecular-weight additives or poor pigment wetting, causing low-melting components to migrate to the die surface.
Jiazhou Solution: Switch to Jiazhou High-Stability Cast Grade Blue Masterbatch. Formulated with high-thermal-purity PE carriers and specialized Fluoropolymer Polymer Processing Aids (PPA) that coat the die wall, preventing buildup for over 72 hours of uninterrupted extrusion.
Root Cause: Pigment agglomerates exceeding film thickness, or moisture contamination in the masterbatch pellets.
Jiazhou Solution: Jiazhou masterbatches feature an FPV of <0.8 bar/g, guaranteeing that 99.9% of pigment particles are under 1.5 microns. Furthermore, sealed vacuum aluminum-foil packaging ensures moisture levels remain below 0.05%.
Root Cause: Viscosity mismatch between masterbatch carrier resin and virgin LLDPE/LDPE substrate, causing incomplete melt homogenization.
Jiazhou Solution: Custom melt-index matching. We engineer carrier resins with elevated MFI (20-30 g/10min) that blend instantly into the host polymer stream without creating rheological turbulence or color streaking.
Pioneering sustainable, ultra-dispersed, and circular-economy-ready color masterbatch solutions for next-generation polyolefin films.
Full commercialization of ultra-low FPV (<0.8 bar/g) masterbatches optimized for 7-layer high-speed cast extrusion lines up to 600m/min.
Developing specialized high-tinting blue and grey masterbatches engineered to color-correct off-spec recycled PE resins while stabilizing PCR degradation.
Expanding zero-carbon footprint masterbatch ranges utilizing sugarcane-derived Bio-PE and PBAT/PLA carrier matrices for fully certified eco-films.
Deploying AI-driven continuous compounding to achieve sub-micron (nanometer scale) pigment particle distribution for ultra-thin sub-5-micron cast films.
Explore our complete list of high-concentration color, black, white, and special effect masterbatches manufactured for export worldwide.
Detailed answers to critical engineering and supply chain questions for B2B buyers, plastic processors, and OEM film manufacturers.
