HF-PC Electroplating Screen Printing Ink
1. Overview & Applications
The HF-PC Series is an advanced 2-component, reactive screen printing ink explicitly formulated for printing over delicate electroplated surfaces. It is characterized by its high opacity, smooth satin finish, and premium adhesion.
Anti-Mirror-Burn Technology: Its most critical feature is its non-corrosive chemical structure. It prevents "mirror burn"—meaning it will not etch, corrode, or dull the sensitive electroplated metal layer, fully preserving the original mirror effect.
Applicable Substrates: Electroplated raw PC (Polycarbonate) sheets, PVC sheets, and Acrylic (PMMA) sheets.
2. Environmental Compliance & Colors
- Halogen-Free (HF): Fully compliant with strict Halogen-Free industrial standards.
- RoHS & Low Odor: Meets EU RoHS 6 standards. Formulated without benzene or heavy environmental-burden solvents, providing a friendly, low-odor work environment.
- Available Colors: X-102 Extra White, X-702 Extra Black.
3. Mixing Instructions & Ratios
| HF-PC Ink | 100 Parts |
|---|---|
| B-5 Hardener | 10 Parts |
| A025 Thinner | 10 - 20 Parts (adjust based on printing requirements) |
| Screen Mesh Count | 250 - 300 mesh/inch |
Pot Life: Once the B-5 Hardener is added, cross-linking begins. At standard room temperature (25°C), the usable pot life is 4 to 6 hours. Do not use the ink beyond this timeframe, as adhesion and printability will rapidly deteriorate.
4. Strict Printing & Curing Workflow
Because electroplated surfaces are highly sensitive, standard air-drying is strictly prohibited. Operators must adhere to the following forced-baking workflow to ensure adhesion and prevent corrosion:
Immediately after printing, the substrate MUST enter the IR (Infrared) drying tunnel within 1 minute. Leaving wet ink on the surface for longer than 60 seconds drastically increases the risk of the solvents burning/corroding the mirror finish.
- Step 2: Touch Dry (IR Tunnel): Bake at 60°C for 8 - 10 minutes until touch-dry.
- Step 3: Hard Dry (Oven): Transfer to an oven and bake at 60°C - 70°C for 30 - 60 minutes. This thoroughly flashes off all residual solvents. (Note: If overprinting a second layer, repeat steps 1 through 3).
- Step 4: Final Cross-Linking: After baking is complete, let the printed pieces sit at room temperature for 24 to 48 hours. This allows the hardener to fully cross-link and achieve maximum bonding strength.
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