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What is wet-film and what is dry-film, and what is the relationship between the two?

Abstract: 湿膜和干膜是涂料施工中关键的两个概念。湿膜指的是涂料在涂覆时的状态,即涂料尚未干燥固化时的膜层厚度,通常用于控制和测量施工过程中的涂层厚度。湿膜测量在涂料干膜厚度只能在破坏后测量时尤为重要。干膜则是涂料干燥后形成的固体膜层,其厚度测量可以确保产品质量并节省材料。干膜厚度可以通过以下公式与湿膜厚度相关联:干膜 = (湿膜 × 涂料固体份%)/ 100。控制涂层厚度尤为重要,因为不准确的厚度估计可能导致材料和时间的浪费,过薄的涂膜可能导致遮盖力不足,而过厚的涂膜则可能引发龟裂、剥落等问题,增加烘干时间和涂装成本。针对湿膜制备,本文建议使用常见的湿膜制备器。

Wet-film

In order to better control the change process of surface construction film, engineers usually perform coating thickness measurement in the wet-film state of Coating. Wet-film measurement equipment depends on the shape of the measurement surface area and the measurement range of the system. In addition, when dry-film thickness can only be measured when it is damaged, the effect of wet film thickness is particularly obvious.

Dry-Film

Accurate thickness measurement controls product mass and saves material consumption. Dry-Film measurement enables damage-free measurement and multi-level damage measurement.

The relationship between wet-film and Dry-Film

It is generally believed that the relationship between Dry-Film and wet-film for most Coatings is as follows:

Dry-Film = (wet-film X Coating solids%)/100

As we all know, misestimation of Coating thickness will lead to unnecessary waste of time, materials and money. Film is too thin, resulting in insufficient hiding power and protective performance, resulting in the need to re-paint and waste time. Conversely, when painting Dry-Film with too thick construction, this may cause defects such as checking, flaking, and excessive stoving drying time. Of course, the cost of painting also increases. This is the reason and effect of controlling coating thickness.

Suggestions for Common Film Applicators in CHINA

What is wet-film and what is dry-film, and what is the relationship between the two? with picture 1


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