YL-UC200 PW Continuous Hot-Melt Coating Machine
| Brand | PW |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | YL-UC200 |
| Price | Upon Request |
| Coating Head Type | Adjustable Comma Coater |
| Coating Thickness Range (Wet) | 1–60 mil (25–1,500 g/m²) |
| Adhesive Viscosity Range | 1,500–9,000 cP |
| Coating Width Adjustment | 12–300 mm (motorized or manual挡胶板 positioning) |
| Standard Web Width | 300 mm (custom widths available) |
| Coating Length | Unlimited (manual web draw-off) |
| Metering System | Digital Thickness Gauge (metric & imperial units) |
| Reservoir Capacity | 125 g |
| Max. Unwinding Roll OD | 300 mm |
| Dimensions (L×W×H) | 480 × 560 × 460 mm |
| Net Weight | 25 kg |
Overview
The YL-UC200 PW Continuous Hot-Melt Coating Machine is a benchtop, manually operated precision coating system engineered for reproducible wet-film deposition in R&D laboratories and pilot-scale production environments. It operates on the principle of comma bar (doctor blade) metering—where a precisely machined rotating steel bar with a defined geometry controls the gap between the substrate and the applicator roll, thereby regulating the volumetric transfer of adhesive or coating fluid onto moving webs. Unlike gravure or slot-die systems, the comma coater enables rapid, tool-free adjustment of wet thickness via mechanical gap modulation—making it ideal for iterative formulation screening, substrate compatibility testing, and process parameter mapping under controlled thermal conditions. The integrated heating capability supports temperature-sensitive hot-melt adhesives, thermoplastic elastomers, and solvent-free pressure-sensitive formulations requiring pre-application melt conditioning.
Key Features
- Interchangeable comma coater head assembly—designed for quick removal, cleaning, and recalibration without disassembly of drive components.
- Reversible upper/lower roller configuration—enables dual-direction coating geometry optimization for differential shear exposure and film uniformity assessment.
- Digital micrometer-based thickness gauge with dual-unit display (µm/mil and g/m²), traceable to NIST-traceable standards for calibration documentation.
- Adjustable nylon containment plates (side dams) with fine-pitch linear guides—allow continuous width tuning from 12 mm to full 300 mm, minimizing edge bead formation and material waste.
- Modular accessory interface supporting optional hand-crank rewind station, line-coating inserts (for stripe patterning), and heated reservoir upgrades for viscosity stabilization.
- Robust aluminum-alloy frame with vibration-damped base—ensures dimensional stability during manual web draw-off at speeds up to 0.5 m/min.
Sample Compatibility & Compliance
The YL-UC200 accommodates a broad range of flexible substrates—including PET, BOPP, paper, nonwovens, and release liners—as well as low-surface-energy films requiring corona or plasma pretreatment. It is compatible with aqueous dispersions (e.g., PVA, acrylic emulsions), solvent-based systems (e.g., nitrocellulose, rubber cements), and 100% solids hot melts (EVA, SIS, PO-based). All wetted components are constructed from 316 stainless steel and PTFE-lined surfaces to ensure chemical resistance and cleanability per ISO 15195 and ASTM D7265 guidelines. While not certified for GMP manufacturing, the system supports GLP-compliant documentation workflows when paired with external audit-trail-enabled data loggers and calibrated thickness verification protocols.
Software & Data Management
As a manually operated benchtop instrument, the YL-UC200 does not include embedded firmware or proprietary software. However, its digital thickness gauge outputs analog voltage signals (0–5 V DC) compatible with third-party DAQ systems (e.g., National Instruments USB-6009, Keysight 34972A) for time-stamped thickness logging, statistical process control (SPC) charting, and CSV export. Users may integrate measurement records into LIMS platforms using standard IEEE 1394 or RS-232 interfaces. For regulatory environments requiring electronic records integrity, pairing with 21 CFR Part 11–compliant validation packages (e.g., LabArchives ELN or Thermo Fisher SampleManager) is recommended for full audit trail generation.
Applications
- Formulation development of pressure-sensitive adhesives (PSAs), including peel/adhesion balance optimization across varying coat weights.
- Substrate-dependent rheological response testing—evaluating sag resistance, leveling behavior, and drying kinetics under controlled ambient or heated conditions.
- Pilot-line validation of coating parameters prior to roll-to-roll scale-up on industrial coaters (e.g., Mayer rod, reverse gravure).
- Quality assurance of incoming adhesive batches via comparative wet-thickness consistency checks against master reference standards.
- Educational use in polymer science and materials engineering curricula for hands-on demonstration of coating hydrodynamics and interfacial wetting phenomena.
FAQ
Can the YL-UC200 be used for solvent-based coatings?
Yes—provided ventilation and explosion-proof precautions are implemented per OSHA 1910.107 and NFPA 33 standards. The standard reservoir is rated for flash points >60°C; optional stainless steel heated reservoirs support higher volatility solvents.
Is temperature control programmable?
No—the heating function is manually adjustable via analog potentiometer with ±2°C stability at setpoint. For PID-controlled ramp/soak profiles, external thermal controllers (e.g., Omega CN7500) must be interfaced.
What is the minimum detectable thickness resolution of the digital gauge?
The gauge displays thickness in 1 µm increments (0.001 mm) with repeatability of ±3 µm across five consecutive measurements under ISO 2178 calibration conditions.
Does the system support automated web tension control?
No—tension is maintained manually during draw-off. For tension-critical applications, users may integrate external pneumatic brake systems or servo-driven unwind stands via mechanical coupling.
Are replacement comma bars available for different geometries?
Yes—PW offers interchangeable chrome-plated steel comma bars with groove depths of 50, 100, and 200 µm, each supplied with individual calibration certificates traceable to PTB Germany.
