KC - Multi-Substrate Pad Printing Ink
1. Overview & Applications
The KC Series is an advanced, multi-functional pad printing ink engineered to bond to extremely difficult, hard-coated surfaces. It delivers high chemical resistance and exceptional surface hardness.
Applicable Substrates: Abrasion-resistant (hard-coated) PC and Acrylic, Metals, Glass, Ceramics, Melamine products, Painted surfaces, Vacuum Electroplated surfaces, Engineering plastics, and treated PP/PE.
2. Physical & Chemical Performance
| Gloss Finish | Matte / Flat |
|---|---|
| Adhesion (Cross-Hatch) | 3M Tape Peel Test: 100% Retention |
| Pencil Hardness | 45° angle, 200g load: 3H |
| Abrasion Resistance | EF74 Eraser, 500g load, 100 rubs: No substrate exposure |
| Alcohol Resistance | Cotton swab with alcohol, 500g load, 100 rubs: No substrate exposure |
| Acid Resistance | Soaked in 5% H₂SO₄ (room temp) for 8 hours: No abnormalities |
| Water Resistance | Submersed in tap water for 6 days: No abnormalities |
| Grease / Oil Resistance | Soaked in salad oil for 8 hours (room temp): No abnormalities |
| Environmental Compliance | Fully complies with EU RoHS heavy metal directives. |
3. Color Series
The KC series offers 42 standard colors, including specialized high-opacity formulations and metallic finishes.
- Standard Solid Colors: 102 Extra White, 103 High-Density White, Yellows, Reds, Blues, Greens, 702 Extra Black, and 901 Clear Varnish Base.
- High-Opacity Series (G): G2201 Yellow, G3301 Red, G4401 Purple, G5501 Blue, etc. (Formulated for superior coverage without a white underbase).
- CMYK Process Colors: 801 Red, 802 Yellow, 803 Blue, 804 Black.
- Metallic & Pearl Colors: A01 to A07 (Flash Silver, Bright Silver, Gold); B10 to B27 (Pearl Silver, Chameleon Colors, Bronze).
- Fluorescent Colors: D-Series (Fluorescent Yellow, Red, Blue).
4. Processing Guidelines & Additives
Mixing Formula (Strict 2-Component System)
The KC ink must be used with a hardener to achieve its 3H hardness and chemical resistances.
| KC Pad Printing Ink | 100 Parts |
|---|---|
| E-8 Hardener | 15 Parts |
| Thinner | 20 - 30 Parts. (Use KC-100 Standard or KC-200 Slow-Dry). |
| Resting Time | After thorough mixing, let the ink sit for 20 minutes before printing to allow initial cross-linking. |
| Pot Life | 8 - 10 hours. |
Mandatory Baking Conditions
Because the ink is formulated for rigid and hard-coated surfaces, it cannot air dry. Forced baking is required.
- Hard-Coated PC, Acrylic, and Electroplated Parts: Bake at 70°C - 80°C for 60 to 90 minutes.
- Metals and Glass: Bake at 130°C - 150°C for 30 minutes.
Storage & Precautions
- Store in a cool, dry place tightly sealed. Keep away from heat and open flames. Shelf life is 2 years.
- Do not intermix KC Series inks with other brands or product lines to prevent adverse chemical reactions.
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