Overview
American Leneta WDX sealed Opacity Chart is a pure white Opacity Chart, surface sealed, used to test the hiding power of paints and other paints. According to user data, it is widely used in Marine, Aerospace, Mobile phone & digital products and biological industries.
Features
1. Pure white design for accurate evaluation of paint hiding power.
2. The surface is sealed to meet specific testing requirements.
3. Provide a variety of Dimensions to meet different test scenarios.
4. The material meets ASTM standards to ensure the reliability of test results.
5. Encasement specifications are diverse (such as 500 sheets/box), which is convenient for laboratory batch use.
6. Applicator rods and other tools can be used in conjunction, convenient for the preparation of uniform coating.
7. Not only for the determination of paint hiding power, but also for the detection of transparent film and plastic products.
Principle
The Opacity Chart is used for the Spreader paint to be tested by providing a pure white test surface. After drying, the degree of covering of the base color by the instrument measurement film, the hiding power (hiding power) is calculated as: Y black/Y white * 100%. 100% covering rate means complete covering, that is, there is no difference between the black and white areas after film.
Applications
Marine, Aerospace, Mobile phones & digital products, Biology, Coatings, inks
Steps
1. Spreader paints and other paints evenly on the paints Opacity Chart according to the film steps.
2. After the film is fully dried by air, the instrument is used for objective evaluation.
3. The hiding power value can be measured and automatically displayed within 1 second.
Notice
The choice of Opacity Chart is related to the coating process, and different paints formulations require test cardboard to have different resistance to solubility.
• Improper lame plating methods, poor lighting conditions, uneven mixing of paints or excessive film polishing may lead to poor paints hiding power, need to pay attention to prevention.
• When performing levelling or sag tests, equipment, paint preparation, painting, and grading must be strictly prepared according to the corresponding ASTM standard methods (e.g. D 4062, D4400).
The rating of the levelling or sag test is subjective and should be based on practical experience.
• Sag resistance index is a comparison tool and should not be directly understood as a specific wet film thickness in practice.
• Sag resistance indices may vary between different products (e.g. emulsion paint and solvent-based paints), so be careful when comparing.
