AFA-II Automatic Film Applicator
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | AFA-II |
| Price | Upon Request |
| Total Power | 350 W |
| Voltage/Frequency | 220 V, 50 Hz |
| Vacuum Platen Coating Area | 300 mm × 200 mm |
| Coating Length | 300 mm |
| Coating Speed | 0–10 cm/s (Infinitely Variable) |
| Dimensions (L×W×H) | 705 × 505 × 270 mm |
| Weight | Approx. 65 kg |
Overview
The AFA-II Automatic Film Applicator is an electromechanical laboratory instrument engineered for precision and reproducibility in thin-film deposition across standardized substrates. It operates on the principle of vacuum-assisted substrate immobilization combined with motor-driven, linearly traversing applicator bars—enabling consistent wet-film thickness control without manual intervention. Designed for R&D laboratories, quality control departments, and coating formulation centers, the AFA-II eliminates variability introduced by operator-dependent parameters such as hand speed, angle, and applied pressure during drawdown or bar-coating procedures. Its core architecture integrates a high-stability vacuum platen system, brushless DC motor control, and mechanical damping to ensure uniform force distribution across the entire coating stroke. The device complies with foundational methodology requirements outlined in ISO 2808 (Paints and varnishes — Determination of film thickness), ASTM D823 (Standard Practice for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels), and GB/T 9271–2008 (Chinese national standard for test panels used in paint testing).
Key Features
- Vacuum-secured platen with 300 mm × 200 mm active suction area ensures flat, wrinkle-free substrate fixation—critical for eliminating edge lift and thickness gradient artifacts.
- Infinitely variable coating speed (0–10 cm/s) via digital potentiometer control enables precise matching to rheological behavior of diverse coating formulations—including water-based emulsions, solvent-borne resins, and high-viscosity polymer dispersions.
- Robust aluminum alloy frame and precision-machined guide rails provide long-term dimensional stability and minimize vibration-induced thickness deviation (< ±1.5% RSD over repeated runs under controlled ambient conditions).
- Modular applicator bar interface accommodates standard wire-wound rods (e.g., 50 µm, 100 µm, 200 µm), adjustable doctor blades, and custom-profiled applicators—supporting both ASTM D1210 and ISO 2808-compliant film thickness protocols.
- Integrated thermal management system prevents localized heating of the drive mechanism during extended operation, preserving motor torque consistency and encoder accuracy over multi-hour test sequences.
Sample Compatibility & Compliance
The AFA-II supports rigid and semi-rigid planar substrates up to 3 mm in thickness, including but not limited to: glass slides, aluminum panels, cold-rolled steel coupons, PET films, and laboratory-grade filter papers. Substrate flatness tolerance must be ≤ 0.1 mm/m to maintain full vacuum seal integrity. The instrument meets CE marking requirements for electromagnetic compatibility (EN 61326-1) and low-voltage safety (EN 61010-1). While not intrinsically rated for hazardous environments, its non-sparking motor and grounded chassis make it suitable for standard ISO Class 8 cleanroom-adjacent QC labs. All operational parameters are traceable via mechanical calibration records aligned with ISO/IEC 17025 guidelines for testing laboratories.
Software & Data Management
The AFA-II operates as a standalone electromechanical system with no embedded firmware or proprietary software. Speed settings are manually configured via front-panel controls; no data logging, USB export, or PC connectivity is provided. For GLP/GMP-regulated environments, users may integrate the unit into validated workflows using external time-stamped video recording (e.g., for audit trail of coating execution) or paired with digital calipers and micrometers for post-application thickness verification per ASTM D1005 or ISO 2360. Calibration certificates for speed accuracy (±0.3 cm/s at nominal setpoints) and vacuum hold-down pressure (≥ −75 kPa at sea level) are supplied with each unit and recommended for annual revalidation.
Applications
- Preparation of uniform test films for adhesion testing (ASTM D3359, ISO 2409)
- Controlled deposition of electrode slurries in battery R&D (Li-ion cathode/anode layer screening)
- Formulation development of architectural coatings, automotive clearcoats, and UV-curable inks
- Accelerated weathering sample preparation (ASTM G154, ISO 4892-3) requiring identical film morphology across replicate panels
- Optical interference film studies where thickness uniformity directly impacts λ/4 or λ/2 phase relationships
FAQ
Does the AFA-II support automatic thickness measurement?
No. Thickness measurement requires post-application instrumentation such as eddy-current gauges (for metallic substrates), magnetic induction probes, or optical profilometers.
Can the vacuum platen accommodate curved or flexible substrates?
No. Only flat, rigid, or semi-rigid substrates with minimal warpage are compatible. Curved surfaces compromise vacuum seal integrity and result in non-uniform film profiles.
Is the AFA-II compliant with FDA 21 CFR Part 11 for electronic records?
Not applicable—the device has no electronic record generation capability. All process parameters are manually set and documented externally by the user.
What maintenance is required for long-term performance?
Monthly inspection of vacuum hose integrity, quarterly cleaning of platen surface ports with isopropyl alcohol, and annual verification of motor speed calibration using a handheld tachometer.
Are replacement applicator bars available from the manufacturer?
Yes. Standard wire-wound rods (DIN/ISO/ASTM dimensions) and stainless-steel doctor blades are stocked and supplied with NIST-traceable dimensional certification.
