Production Speed and its Influence on Hue Variation on Tiles Decoration Based on Silicon Cylinder Technique Laser Engraving Method

Abstract

On the ceramic tile production there are plenty of different possible origins inside the process that can lead to hue variation. Many tile producers use to increase the speed of production and the machinery industry follow this tendency to please their costumers; and so this scenario creates a need of a study on the influence of the speed production on hue variation. In this work this influence was verified using the silicon laser engraving method, one of the most methods worldwide used.

Objective criterion for evaluation of the quality decoration in ceramic floor tile production prior to the sintering process

“…A variable at a time was changed and studied using the other six constants. In this process a digital image is transferred to the cylinder with laser shots, making an ellipse-shaped hole (with dimensions of fractions of millimeters), and depending on the type of engraving and image definition (px/in) used, these holes can vary on dimension and/or number inside an area to represent a gray scale [10][11][12]. The evaluated characteristics through the decoration results, that is, the dots formation laid-up over the ceramic tiles were analyzed using an optical microscopy (Zeiss, Axio Scope A1), with the software Axio Vision v.4.8.2 image analyzer.…”