Surface films
23.04.2024 •

Advancing Surface Evaluation: Unveiling Film Texture with Planar Direction Parameters

The surfaces of films play a crucial role in various fields such as industrial materials and food packaging, where treatments are applied to enhance properties like transparency, gloss, and water resistance. While surface treatments are often visually assessed for qualities like gloss and clarity, there is a growing need for quantitative evaluation of surface texture differences. Surface roughness parameters are commonly used for this purpose, focusing primarily on height variations; however, finer textures extending in the planar direction also significantly influence visual perception. Therefore, parameters like Sal (autocorrelation length) and Str (texture aspect ratio), which assess planar directionality, become essential for a comprehensive understanding of film texture.

In an experiment comparing films with different textural appearances, Sal and Str parameters were utilized to quantify surface irregularities in both height and planar directions. The results demonstrated how these parameters provide nuanced insights into surface texture, revealing variations in the degree and directionality of irregularities among different films. Leveraging technologies like the OLS5100 3D laser confocal microscope allows for precise and reliable surface roughness analysis, offering valuable data for applications across various industries. For those seeking guidance on utilizing such technologies for surface roughness measurement and analysis, reaching out to our team can provide further insights and support in optimizing film surface evaluation processes.