Overview
Leneta Form 5DX Opacity Chart is a black and white sealed Opacity Chart with dimensions of 98x152mm. The upper half is white and the lower half is black. It is dedicated to hiding power testing and levelling sag experimental testing. The product has the advantages of not easy to Curl, no fluorescent agent, good adhesion, good anti-permeability, Color uniformity, smooth surface, etc. It is an imported high-end Opacity Chart.
Features
1. Not easy to Curl
2. No fluorescent agent
3. Good adhesion
4. Good permeability
5. Color uniformity
6. Smooth surface
7. Imported high-end quality
Principle
Opacity Chart tests the covering ability of Coatings by comparing black and white areas. The hiding ratio is calculated as: hiding ratio (%) = Y black/Y white * 100%, where 100% means complete covering, that is, there is no difference between black and white areas after filming. The product uses the principle of black and white contrast to objectively evaluate the covering performance of Coatings.
Applications
Coatings, inks, seals
Steps
1. Spreader paints and other Coatings evenly on the paints Opacity Chart according to the film steps
2. After the film is fully dried by air, use the instrument for objective evaluation
3. The hiding power value can be measured within 1 second and automatically displayed
Notice
• Reasons for poor paints hiding power include improper lame plating method, poor Illumination conditions, narrow working space, uneven mixing of paints, excessive grinding and polishing to reduce the thickness of the Paints layer
• Ways to prevent poor paints hiding power include using the correct lame plating method, ensuring that the spray booth space is suitable and Illumination conditions are good, effectively mixing paints evenly, and prohibiting excessive polishing of the paint film
• The paints hiding power repair method is to sanding the defective area and repainting it
• Levelling sag test at 23 ° C
The sag resistance index is not a wet film thickness value and should be used as a comparison tool
