The high performance Low-E tempering process

Eero Jalkanen, Product Group Manager
Glaston Services Ltd.

New, stricter regulations on energy efficiency have driven the development of high performance single and double silver-based Low-E coatings for high energy-efficiency window and architectural applications. The new post-tempered sputter-coated glass products in themselves require advanced processing technology to ensure flawless quality and productivity on the processing line. The most powerful heating method available today is the profiled high convection heating system, which combines convection and radiation. This paper describes the physical nature of such a heating system in theory and practice. The controlling of different heat transfer factors such as convection, radiation and contact heat transfer (conduction) into the glass are discussed. The objective of this paper is to find an optimum processing technology for today’s demanding architectural and IG-glass applications, including solar control and Low-E glass. The latest profiled high convection heating furnace technology, implemented with machine-vision-based on-line process control, boosts productivity and improves the quality of glass and production.

Full Text Article [339 KB]

The Authors

Mr. Eero Jalkanen Product Group Manager Glaston Services Ltd. Oy Mr. Jalkanen is the Product Group Manager of Glaston Services Ltd. Oy in Finland. He is responsible for advanced flat tempering lines and specializes in convection technology. Before joining Glaston i... Read more