RK K202 Automatic Film Applicator

Overview

The RK K202 Automatic Film Applicator is a precision-engineered laboratory-scale coating system designed for the reproducible preparation of uniform wet films on flat substrates. Operating on the principle of controlled wire-wound bar drawdown—where a calibrated rod traverses across the substrate at fixed speed and applied pressure—the K202 delivers exceptional batch-to-batch consistency essential for color matching, quality control, formulation development, and regulatory testing in coatings, inks, adhesives, and functional thin-film applications. Its rigid mechanical architecture, programmable motion control, and modular bed configuration ensure minimal operator influence on film thickness and morphology, directly supporting ISO/IEC 17025-compliant test environments and GLP-aligned workflows.

Key Features

• Programmable coating speed from 2 to 15 meters per minute, adjustable in 0.1 m/min increments for fine-tuned rheological response capture.
• Dual-drive option: electric motor drive (standard) or pneumatic actuation (optional), enabling integration into cleanroom or explosion-proof facilities.
• Interchangeable substrate support beds—including A-type and B-type vacuum chucks, high-retention magnetic beds, thermostatically controlled heated beds (up to 120 °C), and optically flat tempered glass beds—ensuring compatibility with diverse material classes (e.g., metal foils, polymer films, paper, glass, and composite panels).
• Standard coating width of 325 × 250 mm; extended configurations support up to A0 format (841 × 1189 mm) for large-area R&D or pilot-scale validation.
• Integrated mechanical pressure regulation and vertical force compensation to maintain consistent bar-to-substrate contact during traverse, minimizing edge effects and thickness gradients.
• Modular design compliant with CE, UKCA, and RoHS directives; all electrical components meet IP54 ingress protection standards.

Sample Compatibility & Compliance

The K202 accommodates rigid and semi-rigid planar substrates ranging from 0.05 mm to 6 mm in thickness and up to 12 kg in mass. It supports standard wire-wound applicator bars conforming to ASTM D823-53 and BS 3900 Part 5 specifications, enabling precise wet film thickness control across a validated range of 4–150 µm. The system is routinely deployed in laboratories performing ASTM D2370 (coating tensile properties), ISO 2808 (film thickness determination), and ISO 15184 (pencil hardness) pre-conditioning steps. Its repeatable application geometry meets internal QC requirements for ASTM D3359 (adhesion testing) cross-hatch sample prep and serves as a prerequisite for spectrophotometric color measurement per ISO 12048 and ASTM E308.

Software & Data Management

While the K202 operates via intuitive front-panel controls (no PC dependency required), optional RS-485 and USB-C interfaces enable integration with LIMS or MES platforms. All operational parameters—including speed setpoint, dwell time, direction, and bed type selection—are logged with timestamped metadata and retained onboard for ≥10,000 cycles. Audit trails comply with FDA 21 CFR Part 11 requirements when paired with validated third-party data acquisition software, supporting full traceability for GMP-regulated product development and release testing. Firmware updates are delivered via secure HTTPS endpoint and verified using SHA-256 checksums.

Applications

• Formulation screening of water-based, solvent-based, and UV-curable coatings under controlled environmental conditions.
• Preparation of reference standards for spectrophotometric color calibration (e.g., in automotive OEM labs adhering to SAE J1545 or GMW14872).
• Accelerated weathering sample generation where film thickness uniformity directly impacts QUV or Xenon arc exposure repeatability (per ASTM G154/G155).
• Adhesion promoter optimization on aluminum, steel, and plastic substrates prior to electrochemical impedance spectroscopy (EIS) or salt spray testing (ASTM B117).
• Functional thin-film deposition for printed electronics R&D, including conductive ink patterning and dielectric layer formation.

FAQ

What wire-wound bar specifications are supported?
The K202 accepts industry-standard rods meeting ASTM D823-53 dimensional tolerances, with wet film thickness ratings from 4 µm to 150 µm in 2 µm increments (4, 6, 8…150 µm). Rod diameters and winding geometries follow ISO 23603 conventions.
Can the K202 be used with volatile or hazardous solvents?
Yes—when equipped with the optional pneumatic drive and installed in a ventilated fume hood or integrated exhaust manifold, the system maintains safe operation with Class I–III solvents per NFPA 30 guidelines.
Is temperature control available across the entire coating area?
The heated bed option provides uniform ±1.5 °C thermal stability across the full 325 × 250 mm zone, verified by embedded PT100 sensors and NIST-traceable calibration reports.
How is film thickness verified post-application?
Users typically employ non-destructive methods such as eddy current (for conductive substrates), magnetic induction (ferrous metals), or optical profilometry—validated against gravimetric thickness calculation per ISO 3233.
Does RK provide installation qualification (IQ) and operational qualification (OQ) documentation?
Yes—factory-verified IQ/OQ protocols, including mechanical calibration certificates, speed accuracy verification (±0.3% full scale), and vacuum integrity test records, are supplied with each unit upon request.