Glass Types at a Glance – Definition, Properties and Structure

Technical glass is used wherever components must function reliably – even under high temperatures, chemical stress, or electrical voltage. Examples include sight and gauge glasses in industrial plants, laboratory glassware, glass tubes, insulators, specialty plates, and housings in electrical engineering.

Compared to standard household glass, technical glasses offer superior chemical resistance, greater thermal shock resistance, and higher mechanical strength. This is achieved through targeted raw material formulations (e.g., borosilicate glass) and a precisely controlled melting and refining process.

For glass manufacturers, this means that temperature control, melt bath flow, and furnace design must be perfectly coordinated to consistently achieve the required properties.

Our glass furnaces are designed exactly for this – with optimized tank and firing concepts, adaptable heating, and efficient energy use. The result: a solid foundation for producing demanding technical glasses stably, economically, and at consistently high quality.

Optical glass demands the highest levels of purity, homogeneity, and refractive precision. Whether for eyewear lenses, camera optics, microscopes, or precision instruments – even the smallest streaks, bubbles, or stresses in the glass determine the difference between standard and high-end quality.

In optical glass production, it's not just the recipe that matters – it's the absolute stability and precision of the melting process itself.

Temperature profiles, residence times, flow conditions, and refining must all work together seamlessly. Only then can melts with uniform composition and minimal inhomogeneities be achieved. Our glass furnaces meet this challenge with precisely controllable heating, optimized tank hydraulics, and furnace geometries specifically designed for optical-grade quality. Special conditioning zones also enable fine adjustment of glass viscosity and temperature before discharge.

The result: stable process conditions that enable our customers to produce optical glasses with defined refraction, high transparency, and reproducible quality.

Glassware and kitchen glass must withstand a lot in everyday life: frequent washing, temperature fluctuations between the refrigerator, room temperature, and hot liquids, as well as bumps and scratches. At the same time, the glass should remain clear, brilliant, and permanently appealing – whether it\'s a drinking glass, bowl, storage jar, or heat-resistant casserole dish.

Glass manufacturers primarily rely on robust soda-lime glasses and – for more demanding applications – borosilicate grades with higher thermal shock resistance. The key requirement: the glass recipe must be processed in the furnace so that shape, surface quality, and stability are reliably achieved in the final product.

This requires melting furnaces with stable temperatures, homogeneous melt baths, and precise conditioning before forming. Our furnace concepts are designed for high throughputs and consistent series quality – from clear standard glasses to colored or specially refined kitchen glass. This gives manufacturers a reliable foundation for producing durable, everyday glassware that meets the expectations of end consumers.

Glass containers must serve multiple purposes at once: safely protecting their contents, presenting them attractively, and meeting the demands of filling lines, logistics, and retail. Whether bottles for beverages, jars for food, vials for pharmaceuticals, or flacons for cosmetics – packaging glass must be robust, leak-proof, dimensionally stable, and light-resistant.

Depending on the application, specific glass colors for light protection, defined wall thicknesses, and tight dimensional tolerances for closures and dosing systems may also be required. Producing such container glass in high volumes at consistent quality demands reliable melting furnaces with precise temperature and flow control.

Our furnace concepts are built for the demands of packaging glass: stable melt guidance, homogeneous glass baths, flexible adaptation to different color and glass formulations, and high energy efficiency. The result: glass containers that run smoothly on the filling line – and deliver the quality, safety, and sustainability that end customers expect.

Art glass lives at the intersection of technology and emotion. Whether hand-blown one-of-a-kind pieces, color-rich design series, structured architectural glass, or large-format art objects – here, it's not just function that counts, but above all visual impact, play of light, and tactile quality.

Color additives, inclusions, overlay layers, and special surface finishes place high demands on melt management, viscosity, and temperature stability. At the same time, many manufacturers and studios work with small batch sizes, changing formulations, and one-off projects.
This variety calls for furnace systems that respond flexibly and precisely: stable melting conditions for clear, homogeneous glasses, combined with variable temperature profiles for special colors, textures, or experimental glass types.

Our glass furnaces support art glass producers with adaptable heating concepts, finely controllable temperature management, and furnace geometries suited for both continuous production and project-based melts. This provides the technical foundation for designers, artists, and glass studios to freely realize their ideas – from small editions to large-scale architectural glass installations.