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2. Drawdown chart - Wikipedia

   en.wikipedia.org/wiki/Drawdown_chart

   Initially the desired coating is applied in a puddle on the drawdown chart. Then the bar is placed at the top of the chart, and drawn down over the paint in order to spread it evenly along the length of the chart. Once this evenly spread paint dries, it can be tested for a variety of properties. [5]

3. Hegman gauge - Wikipedia

   en.wikipedia.org/wiki/Hegman_gauge

   Determining the fineness of a paint's grind is important, because too coarse a grind may reduce the paint's color uniformity, gloss, and opacity. [7] The Hegman gauge is widely used for this purpose because it requires minimal skill and only a few seconds' work.

4. Drawdown card - Wikipedia

   en.wikipedia.org/wiki/Drawdown_card

   Drawdown cards are used for testing paints and coatings through wet film preparation. Black and white cards are used to measure both opacity and contrast ratio . By measuring reflectance values of both parts of the card one can gain a quantitative opacity value of a paint sample.

5. Sag resistance test - Wikipedia

   en.wikipedia.org/wiki/Sag_resistance_test

   Paint and other coatings that are on slanted or vertical surfaces tend to sag when first applied. The thickness of the coating as well as the composition and viscosity will affect the overall sagging and conversely the sag resistance. In order to find the sag resistance of a coating a simple test is used.

6. Film applicator - Wikipedia

   en.wikipedia.org/wiki/Film_applicator

   Automatic film applicators vary in their construction. The most modern types of applicators use vacuum plates to hold the drawdown cards and allow a variety of application bars to be mounted. The speed and pressure of the bar can be adjusted to allow for customization of the final film thickness. The drawdown process is governed by ASTM ...

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8. Drawdown - Wikipedia

   en.wikipedia.org/wiki/Drawdown

   Drawdown (economics), decline in the value of an investment, below its all-time high; Drawdown (hydrology), a lowering of a reservoir or a change in hydraulic head in an aquifer, typically due to pumping a well; Drawdown card, used for testing paints and coatings through wet film preparation; Drawdown chart, paper used to test various coating ...

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