Laboratory Dual Mode Extrusion Slot Die and Doctor Blade Coating Applicator for Battery Film Research

Product Overview

This high-precision laboratory coating applicator is an advanced dual-mode film deposition tool designed specifically for flat sheet substrates. By seamlessly combining extrusion slot-die coating and precision doctor-blade scraping into a unified head architecture, this system provides researchers with unprecedented flexibility to process diverse chemical formulations—from low-viscosity organic conductive polymers to high-solids lithium-ion battery electrode slurries.

Engineered for modern cleanroom and R&D laboratory workflows, the unit integrates with automated flatbed coating machines and external fluid delivery pumps. When operating in slot-die extrusion mode, the fully enclosed slurry chamber isolates sensitive wet coatings from ambient moisture and dust, preventing solvent evaporation drift and ensuring batch-to-batch film uniformity across rigid or flexible sheet substrates.

Constructed from ultra-durable stainless steel with specialized geometric optimization, this unit delivers exceptional mechanical stability and thermal resistance under continuous operation. Its compact footprint, sub-micron digital adjustment mechanisms, and corrosion-resistant construction ensure reliable performance for demanding advanced materials research, including solid-state battery electrolytes, OLED display layers, and perovskite solar cells.

Key Features

• Dual-Mode Coating Flexibility: Consolidates both slot-die extrusion coating and traditional doctor-blade scraping in one modular head, allowing researchers to evaluate different coating methodologies without purchasing multiple stand-alone tools.
• Sub-Micron Lip Straightness: Precision CNC-machined lip tolerances maintain edge straightness within $\le 4,\mu\text{m}$, guaranteeing uniform wet film cross-sections across the entire active coating width.
• Dual Digital Micrometer Control: Features twin high-resolution digital micrometers with $1,\mu\text{m}$ ($0.001,\text{mm}$) readouts, enabling reproducible gap height adjustments up to $5,\text{mm}$ for exact film thickness tuning.
• SUS630 Stainless Steel Construction: Crafted entirely from premium SUS630 precipitation-hardening stainless steel, delivering high mechanical strength, erosion resistance, and immunity to harsh organic solvents and acidic/basic slurry chemistry.
• Enclosed Anti-Contamination Extrusion Mode: The enclosed slot-die manifold shields liquid slurries from environmental exposure during application, eliminating ambient dust contamination and controlling volatile solvent evaporation.
• Optimized Internal Manifold Cavity: Designed with a $2.6,\text{mL}$ internal fluid distribution cavity that standardizes hydraulic pressure across the extrusion slot, minimizing edge-bead formation and flow turbulence.
• Flexible Width and Custom Openings: Standard configurations offer effective coating widths up to $150,\text{mm}$ (with $100,\text{mm}$ default C-type slot-die openings), with custom opening profile geometries available upon request.
• Universal Equipment Compatibility: Features standard mounting interfaces that easily connect to lab-scale automatic flatbed coaters, syringe pumps, and peristaltic fluid dosing systems.

Applications

Technical Specifications

Operational and Maintenance Protocol Guidelines

To ensure maximum operational longevity and maintain sub-micron coating accuracy, adhere to the following maintenance procedures:

• Pre-Operation Cleaning: Prior to every coating run, thoroughly clean the lip surfaces, doctor blade edge, and internal cavity using a lint-free cloth dampened with high-purity isopropyl alcohol.
• Symmetrical Adjustment: When setting film gap height, adjust the left and right digital micrometers symmetrically and incrementally to prevent asymmetric mechanical strain on the internal guides.
• Impact Protection: Handle the precision-ground slot-die lips and micrometer spindles with extreme care; avoid any mechanical impacts, hard abrasion, or dropping.
• Fastener Verification: Periodically inspect all assembly screws, locknuts, and alignment pins to prevent structural looseness and eliminate potential coating thickness variations.

Why Choose This Product

• Dual-Process Flexibility: Combines slot-die extrusion and doctor-blade techniques within a single modular assembly, dramatically lowering capital expenditure for battery R&D laboratories.
• Uncompromising Precision: Crafted from premium-grade SUS630 stainless steel with strict tolerance control, achieving $\le 4,\mu\text{m}$ lip straightness and $1,\mu\text{m}$ digital gap resolution for superior film uniformity.
• Enclosed Environmental Isolation: The slot-die configuration protects air-sensitive or volatile liquid formulations from environmental exposure, ensuring stable viscosity and reproducible coating results.
• Seamless System Integration: Designed for effortless mounting onto standard laboratory flatbed coaters and fluid dosing syringe pumps, providing a plug-and-play solution for advanced materials research.

Contact our technical engineering team today to discuss custom slot widths, flow manifold designs, or complete turnkey coating system packages tailored to your laboratory requirements.

Trusted by Industry Leaders