GLASS COLORATION AND COLOR TRANSITION (INTRODUCTORY TRAINING)

In addition to its aesthetic purpose, glass coloration plays an important role. In packaging, color contributes to the protection of food and beverages against UV radiation. The coloration of building and automotive glazing filters IR radiation and reduces the need for air conditioning.

During this course, we will review the physics and chemistry at play in glass coloration, illustrated by industrial examples. Switching from one color to another is a complex transition that must be performed quickly without damaging production, while generating as few losses and defects as possible. Ideal transitions will be presented as well as operational limits and key parameters that must be monitored during color transitions.

Contents:

Definition of color, colorimetry, and color spaces
Influence of various coloring agents on glass color
Principle and limits of glass decoloration
Basics of redox, control, and reduced colors
Color transition: calculation and limitation
Operational parameter changes during the color change

Trainers

Johan Lotter

Johan Lotter obtained a master’s degree in chemical engineering from the University of the Witwatersrand. He worked at PFG building glass as a furnace engineer, technical expert, and manager of the technical department of two plants. He developed a large experience in raw materials, melting and floating process and defect analysis. He is now working as a CFD Engineer and trainer at CelSian.

Corinne Claireaux

Corinne Claireaux studied glass and materials chemistry in Rennes and obtained her PhD from the Sorbonne University in Paris in 2014. She worked as an internal trainer and R&D project leader for Saint-Gobain, improving or developing new glass formulations for different businesses and products (float, glass wool, glass-ceramics). She joined CelSian as a glass scientist and trainer in 2019.

GLASS COLORATION AND COLOR TRANSITION (INTRODUCTORY TRAINING)

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