Product Introduction
The AT-XTB series slot-die coating tester, meticulously developed by Shandong Annimet Instrument Co., Ltd., is a high-precision slot-die extrusion coating tester applied broadly in organic photovoltaic cells, organic field-effect transistors, conductive polymers, nanowires and nanotubes, 2D materials, OLEDs and perovskite LEDs, perovskite photovoltaic cells, lithium-ion battery electrolytes and electrodes, and dye-sensitized solar cells. Since conventional lab coaters are limited by blade adjustment and base plate flatness, making nano-scale coating difficult, this slot-die coater uses various platform options (inspection-grade granite, vacuum adsorption, precision die steel, glass, etc.) and a non-contact slot-die head. Wet film thickness is controlled by three factors: feed pressure, slot gap adjustment, and the clearance between the slot-die head and the base plate. The advanced version adds a height regulation and feedback software system, greatly improving coating precision and uniformity. Wet film thickness can reach 1 micron, and dry film thickness can reach the nanometer level. It has been widely adopted in domestic optical film coating labs for R&D and sampling.

Key Features
Non-Contact Slot-Die Extrusion: The non-contact coating head precisely controls wet film thickness through feed pressure, slot gap, and head-to-substrate clearance, completely overcoming the flatness limitations of traditional blade coating.
Nano-Scale Film Thickness Control: Achieves wet films down to 1 μm and dry films at the nano-scale, meeting extreme thickness requirements for cutting-edge materials like optical films and perovskite photovoltaics.
Multiple Platform Options: Base plates available in inspection-grade granite, vacuum adsorption, precision die steel, glass, and more, flexibly configured based on substrate and application.
Advanced Automatic Feedback: The high-end version integrates a height adjustment and feedback system that monitors and compensates for micro-variations in the head-to-substrate gap in real time for superior uniformity over large areas.
Precision Ink Supply System: Syringe pump delivery with flow rate range of 0-60 ml/min, accuracy 0.01 ml/min. Programmable pre-supply and pre-shutoff times (0-9000 ms) deliver clean, sharp start and end edges.
Servo Precision Drive: Imported precision-ground lead screw with linear guideway and servo motor; coating speed continuously adjustable from 0-100 mm/s, stroke 10-300 mm, for smooth motion and excellent repeatability.

Technical Specifications

FAQ
1. Uneven coating thickness
Slot-die head gap deviation, substrate misalignment, or unstable slurry flow. Calibrate head parallelism; realign substrate; stabilize slurry temperature and viscosity.
2. Vertical streaks, stringing
Slot-die head clogging, particles on lip, or air bubbles in slurry. Disassemble and clean the head lip; degas and filter slurry beforehand.
3. Irregular edge coating, varying width
Edge guide misaligned, uneven web tension, or inconsistent output at both ends of the head. Reposition edge guides; adjust wind/unwind tension; fine-tune head flow rate.
4. Missing spots, skip coating
Insufficient feed pressure, blocked feed line, or low slurry level. Increase feed air pressure; clear lines; replenish slurry.
5. Pinholes, pits on surface
Air bubbles in slurry, dusty coating environment, or dirty substrate surface. Vacuum-degas slurry; maintain cleanroom conditions; clean substrate.
6. Unstable pump output, intermittent flow
Air in metering pump, line leakage, or dried material in pump cavity. Purge air from lines; check seals; clean pump body.
7. Slurry backflow, overflow
Excessive pressure, stuck return valve, or improper line layout. Reduce delivery pressure; service valve; rearrange tubing.
8. Intermittent head dispensing
Clogged feed inlet or filter screen; slurry sedimentation/clumping. Replace/clean filter; stir slurry evenly; clear feed inlet.
9. Coating stage movement jerky or noisy
Dust/dry guide rails, debris on lead screw, or loose drive belt. Clean and lubricate rails; clear debris; tension drive belt.
10. Inaccurate or fluctuating coating speed
Servo parameter drift, VFD fault, or excessive load. Recalibrate speed parameters; check electronic cooling.
11. Substrate wrinkling, wandering
Inconsistent unwind/wind tension or guide rollers not parallel. Adjust tension uniformly; correct guide roller parallelism.
12. Slow heating, inaccurate temperature
Aged heating elements or poor thermocouple contact. Service heating module; fix and calibrate temperature probe.
13. Touchscreen unresponsive, frozen
Loose wiring, system lag, or unstable voltage. Restart device; check terminal connections; stabilize power supply.

After-Sales Service
Thank you for your inquiry. Shandong Annimet Instrument Co., Ltd., established in 2007, has dedicated nearly two decades to the R&D, production, and sales of quality testing instruments. We regard product quality as the lifeblood of our enterprise and pursue excellence in every product developed. Annimet Instrument will consistently provide the tools for your ideas and creativity. Should you have any questions, please feel free to contact our customer service team.