Wet Film Thickness (WFT)

Definition

Wet Film Thickness (WFT) is the thickness of a fluid-applied material before it has dried or cured.

Purpose

The purpose of measuring wet film thickness is to ensure the correct application of coatings, paints, or other fluid-applied materials, guaranteeing the desired coverage, performance, and durability once the material has dried.

Examples of Use

• Paint Application: Ensuring the correct thickness of paint layers for proper coverage and durability.
• Protective Coatings: Applying coatings to metal surfaces to prevent corrosion.
• Sealants: Applying waterproofing sealants to achieve the desired barrier properties.

Related Terms

• Dry Film Thickness (DFT): The thickness of a coating after it has dried or cured.
• Coating: A layer of material applied to a surface for protection or decoration.
• Viscosity: The measure of a fluid's resistance to flow, affecting application and thickness.

Notes

Accurate measurement of wet film thickness is essential for quality control in coating applications. Tools such as wet film thickness gauges are used to measure and ensure consistency.

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