Automatic curtain coating mirror back coating
Focus on Vacuum Metalizing Coating for 30 Years
3711 Self-drying Mirror Back Coating
This product is a protective coating for glass mirror metalized film , which is applied by curtain coating. It has the Characteristics of fast drying speed, dense film and strong adhesion. The lenses produced by this product will not cause film chipping or peeling off when cutting, edging or punching.
| Packaging Specification | Applicable Materials | Application |
| 25kg/drum, 250kg/drum | Glass | Top coat |
| Application Method | Product Characteristics | |
| Drenching (curtain coating) | Fast drying, dense paint film, strong adhesion | |
1. Please stir thoroughly before use, then add solvent to dilute, and continue to stir until uniform. In order to eliminate air bubbles, it should be left to stand for about 0.5 hours after stirring.
2. Filter the coating with a suitable mesh filter and pour it into the paint tank.
3. A suitable mesh filter bag should be installed at the paint inlet above the knife groove of the paint spraying machine and the outlet of the return pipe to prevent dust, glass chips and other sundries from flowing into the paint knife, and at the same time partially eliminate paint bubbles.
4. During the construction process, the solvent can be added to the paint tank by dripping to keep the paint at an appropriate viscosity.
5. During the production process, the paint should be replenished in time to keep the paint tank close to full, so as to avoid the air bubbles in the backflow paint being sucked by the pump.
6. The construction viscosity of the mirror back paint is 25~50 seconds (4 cups, 23°C), the drying temperature is about 140°C, the baking time is 3~10 minutes, and the dry film thickness of the film should not exceed 30μm.
7. The lenses should be placed for 24 hours before stacking, and they should be fully dry before stacking.
| Project | Indicators | ||
| Solids content, %≥ | 65 | ||
| Fineness, um≤ | 25 | ||
| Viscosity（Zahn viscosity Cup 4#, 23±1℃）, s ≥ | 180 | ||
? Drying | Drying (plate temperature/baking time), (°C/min) | 140/3 (packed after 24h) | |
Self-drying | Surface drying, min ≤ | 20 | |
| Solid work, h≤ 72 | 72 | ||
| Construction performance | Curtain coating does not split | ||
| Adhesion (scratch spacing 1mm), class ≤ | 1 | ||
| Pencil hardness (coating scratched) ≥ | HB (fully baked) | ||
| Cutting, edging, punching | No chipping, no shedding | ||
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(The products are widely used in various coated mirrors. Learn more product effects, pleaseContact Us)
