Overview
Form BH is a pure black cardboard produced by the LENETA brand, designed for sealed testing. Its overall size is 11-1/4 x 17-1/4 inches (286 x 438 mm), each box of Encasement contains 125 sheets and is 0.36 mm thick.
Features
1. Standard size: 286 x 438 mm universal test size is available.
2. Pure black background: Pure black design is adopted, which is convenient for observing and evaluating the sealing effect.
3. Basis Weight Encasement: 125 sheets per box, uniform Encasement specifications, easy inventory management.
4. Moderate thickness: The cardboard thickness is 0.36 mm, with good stiffness and durability.
Principle
As the test substrate, the pure black surface of this product provides a high contrast ratio background for the sealed. During the test, the sealed Spreader is applied to the cardboard surface, and the black base color can clearly show the transparency, Glossiness, leveling and possible defects of the coating, thus enabling visual evaluation of the sealed performance.
Applications
Sealed testing, coating performance evaluation, laboratory analysis
Standards
The data did not mention specific compliance criteria.
Steps
1. Prepare a piece of Form BH pure black cardboard.
2. Spreader the tested sealed evenly on the surface of the cardboard.
3. Under the specified conditions drying or curing coating.
4. Standard light source to observe and evaluate the performance of coatings on black background, such as Gloss, clarity, defects, etc.
Notice
• Please use on a clean, flat surface to avoid paper jams bending or contamination.
• Spreader sealing should use a standard scraper or specified method to ensure uniform and comparable coatings.
• The evaluation results should be carried out under standard lighting and observation conditions to ensure conformity.
• Please keep drying when storing to avoid humid environment affecting cardboard performance.
