Research and development
Quality improvement in production and the reduction of the CO2 footprint take priority for our research and development projects.
Use of cullet
- Use of up to 20% cullet made of recycled glass in the flint glass furnace at the Köflach location
- Use of industrial cullet (PIR glass)
- 6% energy and 10% CO2 reduction
Use of secondary raw materials
- 2015 – 2019 we increased the use of secondary raw materials from 5,000 tons per year to ~9,000 tons
- Calumite/slag from steel production
- Biomass ash
- Soda ash
Calumite®/Slag
- Does not contain fixed CO2 and thus significantly reduces the ecological footprint as well as the energy expenditure during melting
- Blast furnace slag is available as a by-product of the steel industry
- This homogeneous material has a positive effect on glass colour and quality
Biomass ash
- The proprietary CAG Holding GmbH biomass plant produces over 10,000 tons of biomass ash which is available for us
- Stoelzle participates in international research projects
State-of-the-art glass laboratory
- Enlarged in-house glass laboratory
- Experimental laboratory for research and development for the glass melt
Process optimization
- The collection and analysis of process data enables a more precise calibration of the manufacturing processes
- Implementation of new technologies in the field of inspection machines and process automatization
Type II pharmaceutical glass
- New development of an old process
- Innovative solution for interior surface treatment
- Important reduction of the use of chemicals
- Reduction of the environmental impact
NRG 4.0
- New phosphorescent glass decoration technique
- The colour changes according to the surrounding light