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KEY-Sliver 8# Photo Emulsion
Product Highlights
RoHS PASS | Excellent water and solvent resistance | High sensitivity, exposure time |
High resolution, fine lines | High solids content and good leveling properties | The film is soft and prevents ink bleeding. |
Scope of application
Suitable for high-precision electronic products such as PCB, FPC, mobile phone cover plates, solar cell back electrodes/back aluminum, as well as fine line and dot screen printing.
Product Features
Appearance | Packaging specifications | Emulsion weight | Solid content | viscosity Type B viscometer, 25℃ |
Blue sticky emulsion | 1 kg | 900g | 40% | 9000（mPa·s） |
Exposure time
Screen type | Angle | Film thickness | Light source | Lamp distance | Optimal exposure time |
250T(Y) | 22.5° | 15±1 µm | Ultra-high pressure mercury lamp 3 kW | 1m | 2.5 min |
How to use
- No photosensitizer required; ready for immediate use.
- Coating: Apply using a high-quality squeegee. Coating characteristics depend on screen size and tension. Determine the number of coating passes based on print requirements to achieve the desired film thickness. For two or more coating passes, ensure the previous screen coating is completely dry before proceeding; otherwise, film peeling may occur.
- Drying: Optimal drying temperature is below 40°C. Excessive heat may cause thermal reactions in the photosensitive emulsion, affecting plate-making results. Ensure screens are thoroughly dried.
- Exposure: Optimal wavelength is 300-400nm. Results are enhanced using ultra-high-pressure mercury lamps or high-pressure gallium iodide lamps.
- Development: Recommended method: Rinse the plate surface uniformly using a high-pressure water gun or spray gun.
- Drying: After development, first remove surface moisture from the screen before placing it in a drying oven below 40°C. Ensure thorough drying; otherwise, the screen may experience emulsion loss.
- Secondary Exposure: Expose the S-side for 1-2 times the exposure time of the P-side to significantly improve print durability.
- Curing: After the screen is completely dry, evenly apply the mixed A+B curing solution to both the P and S sides. After 1-2 minutes, use an air gun to blow through the ink-flow area. Dry for 20-30 minutes to significantly improve the screen's print durability.
Transportation and storage
Transport using clean trucks, with each package stacked no more than five layers high, and the bottom layer secured with a non-slip pallet to prevent squeezing, deformation, or tipping.
Keep sealed, avoid direct sunlight and high heat.
Unopened, 9-month warranty period.
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