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Brochure Glass Technology GLASS PRODUCTION TECHNOLOGY throughLet us the be world your of glass guide Content 4 Enthusiasm starts with excitement. 8 Grenzebach and CNUD EFCO GFT offer a seamless glass engineering experience. 10 Flawless glass manufacturing starts here – in the hot end. 10 The tin bath – endless fascination 11 The annealing lehr for quality glass 12 Waste heat recovery – a green approach 13 Utilities and central power supply – an eco-friendly feed stock solution 6 Today, we speak from experience. 14 The cold end, destined for flexibility and reliability. 14 Seamless conveying 14 Dynamic cutting technology 16 Metrology – good data means better results 17 Stacking technology – good stacking means better glass 20 Glass coating technology for that functional and attractive finish. 20 Glass with added value 21 Future-proof lab coater 18 Coating technology. 21 Integrated control Or the feel-good factor. 22 Smart, connected and transparent processes all along the line. 22 Integrated production logistics 23 Staying on track with product traceability 26 SERICY. A data powerhouse. 28 Plant operation and control that's a breeze. 24 What will the future be like? 29 Intuitive user interfaces Be a part of the journey with our 29 Lower workloads, higher availability digitalization solution for tomorrow’s glass production. 32 WeService. Premium service – and that’s a promise. 34 Grenzebach service to exceed expectations. 30 We live Service. Partnership and service that go the extra mile. startsEnthusiasm with excitement. Glass lets us gaze way out onto the horizon or view the Experts from many disciplines push boundaries because At the same time, we also want to team up with you to ensure ties available today inspire us to help you make your business world and what it has in store under a microscope. The glass is in their DNA. They also understand the bigger pic- that future generations can fully enjoy the appeal of glass. grow. We want to place all added value at the center stage for material is thousands of years old and reveals new facets ture. Architects use glass to create eye-catching buildings. Glass can play a key role in combating climate change and you. Let’s continue to embark on this journey together. of itself each and every day. It fascinates and empowers Manufacturers produce this glass in exceptional quality and making the transition to green energy happen. For example, Let us be your guide through the world of glass. us to work tirelessly on technological innovations so that repeatedly break new ground in the process. They are backed building modules that produce electricity from solar power. we can help you exploit its full potential. up by a whole team of developers, engineers and programmers Today, waste heat from the manufacturing process can already whose day-to-day mission is to discover what further potential be used as a source of energy. Hydrogen or electricity from glass can unlock. renewable resources could run production lines in tomorrow’s world. Glass is naturally planet friendly. It can be recycled and We’re delighted to be part of the journey that glass takes us melted down repeatedly while retaining all of its unique char- on. Our approach is optimistic but we cast a critical eye when acteristics. required. We’re a partner who thrives on bringing our expertise to the table, kick-starting innovations and improving overall This material has been around for thousands of years and is 4 experience from start to finish. now encountering the digital revolution. The digital opportuni- 5 Today, we speak from experience. Glass is one of the world’s oldest materials and has achieved a quantum leap thanks to float glass technology. We provide end-to-end support to float glass manufacturers and I’m always impressed each time I walk down a production line. And that really motivates us as a team to break the mold and make the technology even better for our customers. Egbert Wenninger Chief Commercial Officer Anyone glancing through a wrought-iron window in a Sand, lime, dolomite and soda are all used to make the excep- There’s no end to the variety of ways glass is used. But regard- With production sites in four time zones and service centers historic building, castle or church will immediately notice tional material that is glass. The ingredients melt at a tem- less of whether it’s architectural glass, automobile glass, in many countries, we’re never far away and can be contacted what a difference float glass technology has made. You perature of 1,400 degrees Celsius, or 2,552 Fahrenheit and patterned glass, thin glass, wired glass or customized glass, remotely or locally. can look right through the glass without any optical turn into glass. The basis is a liquid that remains transparent special machinery is required to make, fabricate and convey it. distortion. Grenzebach and CNUD EFCO GFT have been when it solidifies and is very stable. The float glass method With over 300 systems installed internationally, Grenzebach shaping the story of float glass technology from the out- is the most successful in the history of flat glass production, and CNUD EFCO GFT are hugely experienced in the sector. set. Our wealth of experience benefits our customers all which goes back thousands of years. Our experts are the people you can bounce ideas off of and around the world. vice versa. They’ve been in the business for many years, know Grenzebach and CNUD EFCO GFT have been supplying produc- all equipment and technology involved and on-site collabora- tion and processing machinery for industrial float glass from tion builds trust. the very beginning. Since the 1990s, we’ve been technology pioneers in this sector. Today, way more than half the panels of To harness the power of technological progress in your inter- glass fitted in buildings are based on Grenzebach technology ests, we see our role as anticipating future challenges and 6 and/or produced by CNUD EFCO GFT. asking critical questions above and beyond the project we’re 7 currently working on. Grenzebach and CNUD EFCO GFT offer a seamless glass engineering experience. Grenzebach and CNUD EFCO GFT’s RAW MATERIALS HOT END COLD END WAREHOUSE COATING mission is to cover the journey glass takes from hot to Melting Forming Annealing Zone cold. Together, we offer a one-stop Batch House Break and Return solution that encom- passes the tin bath to the annealing lehr all the way to the cold end, the coating phase to conveying Furnace Tin Bath Annealing Lehr Cold End Coater Waste Heat Recovery System the finished product to the warehouse. Why not make use Utilities and Central Power N2/H2 Supply (Nitrogen/Hydrogen) of this outstanding combination? Warehouse Logistics Delivered by: We view all parts of the float glass production line as Today, more than 300 float glass production lines worldwide We want to make your processes easier, less complex and min- one. This approach is beneficial in terms of technology use Grenzebach cold-end machinery. As a market leader imize risk to you. Reap the following benefits that two global and makes communication easier because there is one renowned for providing solutions for annealing lehrs, float players provide: single point of contact. Data from all the sections are baths and accessories, CNUD EFCO GFT has been also involved pooled and help create the added value digitalization in fitting out over 300 production lines. » One stop shop offers. » Technology integration across the board Both companies’ experts already know one another from past » Focused, precision engineering collaborations and share the same passion for innovations and » Less project management required by customers superior quality. » A standardized control concept, fewer interfaces » Plant and equipment design in 3D and via simulations » Intuitive glass plant operation » Digital solutions for better output, quality and efficient resource use 8 » Joint focus on energy efficiency and a better carbon 9 footprint glass manufacturing starts here – inFlawless the hot end. We developed a shorter tin bath that delivers the following benefits: » Lower investment costs, due to the requirement for a smaller building, fewer steel structures and less tin. » Lower running costs as fewer resources, like energy and inert gas, are needed. » If space is available, the tonnage of the entire system can therefore be increased. THE TIN BATH – ENDLESS FASCINATION THE ANNEALING LEHR FOR QUALITY GLASS The float process is based on a revolutionary idea by Sir CNUD EFCO GFT supplies the entire tin bath: Once it leaves the tin bath, the glass ribbon enters an up to Our thickness gage in the hot end measures the thickness of Alistair Pilkington where molten glass is poured onto a bed 200 meter, or approx. 656 foot annealing lehr. This is a kind of glass ribbons right at the beginning of the annealing lehr. As of molten tin. This method is the basis of industrial flat glass » Suspended tin bath roof, roof casing, heating elements long kiln in which the glass is cooled slowly from about 600 a result, feedback relevant to the production process is fast. manufacturing up until today. » Top rollers including a camera system degrees Celsius or 1,112 degrees Fahrenheit to 60 degrees Any deviations from specifications are corrected and resources » Coolers Celsius or 140 degrees Fahrenheit. This controlled cooling safeguarded. The molten glass is fed into the tin bath, which contains mol- » Venting system process minimizes stresses in the glass, which is vital when ten tin in an inert gas atmosphere. The glass mass spreads » De-drossing pocket processing the glass afterwards. » Combined measurements including temperature, glass over the molten tin and forms a continuous ribbon. The under- » Dross box ribbon width, glass position side of the glass floats onto tin in the tin bath and is heated » etc.
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