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Since 1997

Automatic Curtain Coating Mirror Back Coating

3711 Self-drying Mirror Back Coating

• Application

Top coat

• Applicable Materials

Glass

• Packaging Specification

25kg/drum, 250kg/drum

Case Study

The products are widely used in various coated mirrors. Learn more product effects, please Contact Us.

 

Parameters

Project Indicators
Solids content, %≥ 65
Fineness, um≤ 25
Viscosity(Zahn viscosity Cup 4#, 23±1℃), s ≥ 180
 

Drying
performances

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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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
25kg/drum, 250kg/drum Glass
Application Application Method
Top coat Drenching (curtain coating)
Product Characteristics
Fast drying, dense paint film, strong adhesion
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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.