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The NEWTON relies on warm edge technology from H.B. Fuller | KÖMMERLING

Property developers and employers are increasingly investing in innovative real estate projects that sensibly combine New Work and Zero Waste concepts. A prominent example of such a super-efficient and attractive construction project is the NEWTON in Munich’s Westend, an office property from the TÜV SÜD Gruppe München, completed in 2018. What makes its ultra-modern façade stand out, among other things, are the sophisticated cold-bent, double-curved insulating glass units in the roof dome. To ensure that these meet the high demands for reliable edge-sealing and long-lasting stability, the ultra-high-performance Ködispace 4SG warm edge system from adhesive and sealant manufacturer H.B. Fuller | KÖMMERLING was used.

In recent years, Munich’s Westend has increasingly developed into a popular residential and nightlife area. The successful mix of old and new buildings, small pubs and popular restaurants, as well as the short distances to local recreation areas in and around Munich, make this new trendy neighbourhood especially attractive. At the same time an anprogressive business location has become established which, in addition to the well-known ADAC Tower, the Fraunhofer Institute and other renowned institutions, now boasts he NEWTON as its latest real estate project from the TÜV SÜD Gruppe.

In the NEWTON, a total of close to 35,000 m² of office space in 65 occupancy modules offer ideal conditions for new, forward-looking working environments accommodating up to 2,000 people. The glass-roofed hall forms the main focal point of the building and a forum for events. GEWE-therm 4SG insulating glass from SCHOLLGLAS were used to build the roof dome in the NEWTON. After production and delivery to the construction site, the insulating glass units were bent directly on site by experts from LAMILUX using an assembly and bending method that firstly fixes them to the frame construction diagonally, and then into their final shape.
All edges of the 1,850 x 1,850-millimeter insulating glass units are held in a linear manner using pressure bars and have a maximum corner deflection of 95 millimeters.

In the NEWTON’s double-curved roof dome, the flexible warm edge system with Ködispace 4SG ensures that the cold-bent insulating glass is permanently sealed.
Photo credit: koem_tuev_010.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
In the NEWTON’s double-curved roof dome, the flexible warm edge system with Ködispace 4SG ensures that the cold-bent insulating glass is permanently sealed. Photo credit: koem_tuev_010.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig

The results clearly showed that, especially with cold-bent insulating glass units, the Ködispace 4SG reactive warm edge system has clear advantages over a conventional spacer bar system. This confirmed that stiffer conventional spacers cannot compensate for the resulting loads for two primary reasons. Firstly, inflexibility of the material and secondly, almost all of the shear load relies on absorption through a very thin PIB (butyl primary sealant) layer, often measuring less than 0.5 millimeters. This in turn leads to large deformations in the primary seal consequently leaks cannot be ruled out as a result.

Due to significantly more flexible behaviour, Ködispace 4SG absorbs the external deformation without creating significant stresses. Ködispace 4SG also uses the entire width and volume of the spacer it creates between the panes – depending on the system this is normally 12 to 20 millimeters compared to two 0.3 to 0.5-millimeter PIB layers in conventional systems – and is therefore much more able to compensate for the occurring loads and associated deformations than a conventional, rigid spacer system. With Ködispace 4SG the resulting deformations are smaller by a factor of about ten in the case detailed above. Additionally, greatly improved gas tightness is achieved with the reactive polyisobutylene chemically bonding to both the glass surface and the silicone secondary sealant. As a result, the entire edge seal “blends” into a flexible and resilient unit that is stable over long term becoming permanently tight. This and the final results of the FEA were confirmed by component tests: data that ultimately convinced both the planning parties and the NEWTON façade builders of the system from specialists H.B. Fuller | KÖMMERLING.

 

Platinum for sustainability

When building the NEWTON, long-term thinking and demonstrating responsible and sustainable design principles were top priorities for the team of architects at DMP, a member of the German Sustainable Building Council since 2008. In addition to the use of intelligent and innovative building materials, the building also stands out with an ecological concept that works with existing resources. Regardless of the season, the building is heated or cooled continuously with groundwater. Moreover, photovoltaics on the roof surfaces enable the use of regenerative solar power, reducing the general electricity requirement by a further 25 percent. The energy requirement itself is also impressive: with a primary energy requirement of approx. 72 kWh/m²a, the NEWTON achieves an absolute peak value, almost a third less than the average for an office building of comparable size. The use of the Ködispace 4SG warm edge system in the construction of the roof dome makes a significant contribution to sustainable construction, as long-term energy-efficient insulating glass units can only be achieved in combination with permanently gas-tight spacer systems. The prudent approach of all those involved in designing the environmental strategy for the building  was recently rewarded with a DGNB platinum certificate awarded for a sustainable building  performing at the highest award level. This puts the NEWTON in the top rankings of Munich’s desirable office properties.

Construction panel

 Project: NEWTON München, Ridlerstrasse 57, Munich

Client: TÜV SÜD AG Munich

Completion: 2018

Architecture firm: DMP Architects Axel Altenberend, Munich

Use: Office, conference and catering

GFA: 61,680 m² (total, incl. 2 basements)

Façade construction: Dodel metal construction and LAMILUX (for the roof construction)

Glass elements: SCHOLLGLAS GEWE-therm® 4SG

Spacer system: H.B. Fuller | KÖMMERLING Ködispace 4SG

 

About Kömmerling Chemische Fabrik GmbH

 Since 2017, Kömmerling Chemische Fabrik GmbH, as H.B. Fuller | KÖMMERLING, has been part of the US adhesives group H.B. Fuller. With its three business units – Engineering Adhesives, Construction Adhesives and Hygiene, Health and Consumable Adhesives – the world’s largest supplier of adhesives and sealants covers a wide range of demanding adhesive and sealant applications used in a number of industries such as electronics, hygiene, medicine, transport, construction and renewable energies. The international group generates sales of some 3 billion US dollars and has 6,500 employees serving customers in more than 125 countries. The Pirmasens site has become the “Technology Center of Excellence” for insulating glass applications and is therefore responsible for research and development of new products and fields of application as well as for advancing existing expertise.

Weitere Informationen und Belegexemplar an:

Kömmerling Chemische Fabrik GmbH
Alexandra Rohr

Zweibrücker Str. 200
D-66954 Pirmasens

E-Mail: marketing.koe@hbfuller.com
www.koe-chemie.de

The covered entrance hall is a central meeting point for employees and a popular location for all types of events.
Photo credit: koem_tuev_158.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
The covered entrance hall is a central meeting point for employees and a popular location for all types of events. Photo credit: koem_tuev_158.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
The warm edge with Ködispace 4SG compensates for any deformations of the cold-bent insulating glass in the roof dome much better than rigid spacer systems.
Photo credit: koem_tuev_103.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
The warm edge with Ködispace 4SG compensates for any deformations of the cold-bent insulating glass in the roof dome much better than rigid spacer systems. Photo credit: koem_tuev_103.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig

A first-class warm edge system with Ködispace 4SG

In order to meet the high demands for reliable sealing and long-lasting stability, the building materials and composites used for the construction of the NEWTON were extensively tested in advance. First and foremost the structural integrity of the Ködispace 4SG spacer system for the glass structure in the roof dome was evaluated. To compare the double-glazed insulating glass units to be installed, two digital models were created: one with a Ködispace 4SG spacer system and one with a conventional aluminum spacer. Both models were then examined in detail within the framework of a finite element analysis (FEA) assessing the shear loads in the edge compound system of the planned roof dome caused by the consequent deformation from the bending.

The ideal prerequisite for a state-of-the-art New Work space: open, transparent office structures that can be flexibly combined.
Image: koem_tuev_085.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
The ideal prerequisite for a state-of-the-art New Work space: open, transparent office structures that can be flexibly combined. Image: koem_tuev_085.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
The NEWTON’s glass-roofed hall is a main focal point of the building, entrance for the working world of up to 2,000 people as well as a forum for events. Photo credit: koem_tuev_122.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
The NEWTON’s glass-roofed hall is a main focal point of the building, entrance for the working world of up to 2,000 people as well as a forum for events. Photo credit: koem_tuev_122.jpg, H.B. Fuller | KÖMMERLING, Martin Lässig
Due to its special composition, Ködispace 4SG forms a chemical bond with the glass as well as with the secondary sealant silicone. The insulating glass therefore becomes a firmly bonded yet flexible unit.
Photo credit: H.B. Fuller | KÖMMERLING
Due to its special composition, Ködispace 4SG forms a chemical bond with the glass as well as with the secondary sealant silicone. The insulating glass therefore becomes a firmly bonded yet flexible unit. Photo credit: H.B. Fuller | KÖMMERLING

Bildnachweis: Kömmerling Chemische Fabrik

H.B. Fuller | KÖMMERLING offers a ‘one-stop solution’ for every adhesive, sealant and other specialist chemical technology that RV manufacturers, among others, need to use to help them improve manufacturing processes, RV durability and performance, and, ultimately, the consumer experience when using them anywhere in the world.

By collaborating with customers across the global RV industry, H.B. Fuller has developed solutions for nearly every part of the RV manufacturing process, including panel lamination of sidewalls, floors, roofs and furniture production. Founded over 100 years ago, H.B. Fuller has supplied the RV industry for 30 years across Europe, USA, and Australia and, most recently, China.

In 2017, H.B. Fuller, the worldwide adhesive supplier, expanded its expertise in the RV sector with the acquisition of Kömmerling, a well-known brand which had also served the global RV industry for many years mainly focused on assembly bonding and sealing. Acting as one robust organisation, they now provide a specialist ‘one-stop shop’ for the RV industry - a global company with local expertise in all markets. While leveraging their combined network of R&D labs, H.B. Fuller has been able to develop a strong portfolio with a full spectrum of adhesive solutions. The company also promotes a close collaboration with OEMs to help them produce improved RVs that truly meet the demands of being used in any climate around the world.

 

Hotmelt and Reactive Hotmelt

Every adhesive and sealant solution has its specific application. It is often the customer’s needs and circumstances that define the adhesive technology finally recommended.
A popular adhesive in many industries, including furniture and laminated sandwich panels for the RV segment is the hotmelt technology - a fast adhesive solution with immediate position tack that does not require any further fixation of the parts. In principle, it is necessary to differentiate between thermoplastic
hotmelt and reactive hotmelt. Thermoplastic hotmelt is a non-reactive adhesive that becomes liquid at high temperatures above 130°C to make it easy to apply and stick parts together quickly. However, for items such as sandwich panels and furniture for areas exposed to high temperatures, like kitchens, there would be the risk of low resistance to heat. For these situations, the reactive hotmelt is more resistant to high temperatures and, therefore, more durable.
The working principle of reactive hotmelt is similar to the thermoplastic hotmelt explained above, as it is also applied once it has been heated and melted but it uses an additional chemical reaction to build a strong connection that cannot be opened again once it is cross-linked. This is quite a popular choice for sandwich panel construction for RV OEMs in North America, whereas European manufacturers mainly prefer to use liquid moisture cure products, such as H.B. Fuller’s Icema™ R 145 grades.
The H.B. Fuller Rakol® and Rapidex® reactive hotmelt products are used for flat lamination processes to create safe, durable, high quality furniture, flooring, doors and window products. For the process of edge banding in RV furniture production, there are both thermoplastic and reactive hotmelt products with heat resistance ranging from 75°C to 140°C in use.
Throughout its history, H.B. Fuller has built upon its strong knowledge by continuous innovation. Its scientists are always searching for new technologies that can help improve a customer’s operations, product applications and finished goods.

Words bei John Rawling for Aboutcamp BtoB

Read more on aboutcampbtob.eu.

Young chef cooking in a caravan
Aboutcamp1

Global markets

RV OEMs using hotmelt adhesive from H.B. Fuller include wellknown brands across the global RV market as well as independent single producers, in major markets like the USA, Germany, France, Italy, UK and Slovenia. As part of its growth strategy, H.B. Fuller is now also better positioned to meet the increasing demand from the Australian and upcoming Chinese RV markets.

 

Continuous development

With more than 6,000 employees, 72 productions sites and 38 technology centres globally, H.B. Fuller has the power of a truly global adhesive provider with local expertise in each market it serves, and is continually undertaking huge amounts of R&D all over the world.
The three dedicated teams that specialize in the RV industry for the Americas, Europe and Asia Pacific regions benefit from being part of a global support capability and add customer value by deeply understanding local challenges, priorities and processes inside out. The company has a wide distribution network serving manufacturers of all sizes and ensures the same level of expertise in every corner of the globe.

Aboutcamp2

Weitere Informationen und Belegexemplar an:

Kömmerling Chemische Fabrik GmbH
Alexandra Rohr

Zweibrücker Str. 200
D-66954 Pirmasens

E-Mail: marketing.koe@hbfuller.com
www.koe-chemie.de

Bildnachweis: H.B. Fuller | Kömmerling

Quality of support and expertise a key factor for new relationship

Tuffx, one of the country’s leading manufacturers of specialist glass for both the residential and commercial markets, has forged a long-term partnership with Kommerling UK. The latter is providing Tuffx with a range of hotmelts and specialist resins that are being incorporated into several of the company’s market leading products including glass for balustrades, canopies and stair treads.

Paul Higgins, Purchasing Manager at Tuffx, explained more; “Opportunities for laminated products in which the glass has one or more inherent properties eg photovoltaic capabilities or UV protection, are only going to increase as we see glass used in ever more creative ways, in both the commercial and high end residential markets. It became clear that Kommerling could offer us far more than just a high-performance product. From our first meeting the support from both the team here in the UK, backed up by extensive technical and development expertise in Germany has been first class.” He continued; We very much view this as a collaboration where our knowledge of glass manufacturing combined with Kommerling’s unrivalled expertise in the development and production of resins will lead to some exciting new products in the not too distant future.”

Kommerling supplies both its Koedigaurd UV-HS R liquid composite for Tuffx’s structural applications and Isomelt M, a hotmelt, for its IG glass range. Chris Davis, Composites Manager for Kommerling UK, said;” We are delighted to be working with Tuffx, and that they have recognised the true value of our technical and product support. We look forward to fruitful joint technical collaboration on various projects in the coming months that will deliver new products that we believe will extend how and where glass is used and which will excite the architectural community.”

 

The product that Tuffx has introduced on its production line is Koedigaurd UV-HS R liquid composite. With exceptional performance in terms of the strength of the finished bond, combined with quicker processing times and the ability to apply it to bespoke pieces of glass without having to subject them to a lengthy application and curing process, the product is delivering very real benefits in terms of production times. This in turn means that not only are customer lead times reduced but so are direct production costs.

Two examples of Tuffx products

Tuffx_Staircases

Background

Tuffx Processed Glass Ltd, has nearly twenty years’ experience in specialist, toughened safety glass manufacturing. Tuffx is established as one of the UK’s most progressive, customer-oriented companies. The company is based in Knowsley, Merseyside where it employs 156 people. For more information on Tuffx products visit

http://www.tuffxglass.co.uk

 

Koemmerling Chemische Fabrik GmbH is a leading international manufacturer of high-quality adhesives and sealants. Its European headquarters and extensive research and development facilities are in Pirmasens, Germany and it has a network of subsidiaries, sales offices and sales partners, in more than 80 different countries. With over 110 years’ experience, the company has established itself as an innovative market leader in provision of Polysulfide, Polyurethane, Silicone and Polyisobutylene sealants for the automotive, insulating glass and photovoltaic industries. In April 2015, Royal Holdings, Inc. through its Kommerling UK Limited subsidiary, acquired CIL.

 

Koemmerling Chemische Fabrik has been awarded ISO 9001, ISO 14001 ISO 50001 and OHSAS 18001 certification.

To find out more, Aboutcamp BtoB interviewed Iñaki Sigler - Marketing Manager, Durable Assembly - EIMEA at H.B. Fuller, and Ralf Fuhrmann - Business Manager, Transportation Adhesives & Aftermarket at Kömmerling Chemische Fabrik GmbH, an H.B. Fuller company.

H.B. Fuller is a major industrial adhesives manufacturer with factories and customers worldwide. It is headquartered in Minnesota, U.S. The recent acquisition of Royal Adhesives brought its annual turnover to $2.3 billion and included the Kömmerling brand and technology.

Aboutcamp BtoB: What has been the driver to bring these two companies together for the RV market in Europe?

Iñaki: H.B. Fuller has acquired Royal's business globally. In Europe, this means Kömmerling, and we now operate as a single company.

Ralf: Both H.B. Fuller and Kömmerling have been supplying the same market but with little overlap between their products. For example, H.B. Fuller was well known for its range of adhesives for sandwich panels and furniture, and Kömmerling is well known for its sealants and adhesives for assembly bonding and interior finishing. It was really quite amazing how our products complemented each other, a perfect fit you might say. The acquisition has, therefore, provided the opportunity to offer a one-stop solution for all RV manufacturers. This means the one company can now supply all the sealants and adhesives needed by the RV industry where previously this was not possible.

Aboutcamp BtoB: Did you each have RV manufacturer customers already in Europe?

Ralf: Yes, we did. I was hired some 20 years ago by Kömmerling to develop the RV sector and have been doing so ever since, together with an international team in the relevant European market. Beside this, H.B. Fuller has been in the RV market for more than 30 years.

Aboutcamp BtoB: How big do you think the European market is?

Ralf: Looking at RV production numbers, the European market is very large. Indeed, we jointly supply some 1,000 tonnes of adhesives and sealants each year. We have many customers with both large production operations but also with independent single producers. So, we are already a big player in the market, and we definitely want to grow further.

Aboutcamp BtoB: Do you also sell these products outside Europe, for example to the U.S. or Australia?

Ralf: We are a global company, and we have production sites and colleagues around the world, but Kömmerling has only a small presence outside Europe. We sell to the Australian market, and a couple of years ago, we began to manufacture and sell in China. We see this as a market with excellent growth potential.

Aboutcamp BtoB: Presumably you see yourselves as competitors to Henkel, Sika, Deka and so on?

Ralf: Exactly! Competition is strong, and we are now in a better position to expand our business than ever before, as we are now able to supply every single technology needed for production of high quality recreational vehicles.

Aboutcamp BtoB: What about new applications and products? Hwo do you go about testing to ensure fitness for purpose?

Ralf: Having a product for every conceivable RV application is key to the success of the new venture, and as new applications arise, we will commence dialogue with our client's technical teams and purchasing departments to better understand their requirements. Once we have a specific request, we discuss it face to face to understand the application and what environmental or other conditions might influence the joint line. Extensive testing is then carried out on the original customer substrates according to the conditions in which the new application will be used. Only once we are 100-percent happy is the new product or application released for production. But it's not only RV manufacturers we talk to about new applications. With new materials constantly coming to the market, we stay ahead of the game by talking directly to RV material suppliers and by testing samples before anything goes into production.

Aboutcamp BtoB: Which is your best-selling product in the RV market?

Ralf: Both parts of the business - legacy H.B. Fuller and Kömmerling - have strong product applications. H.B. Fuller was very strong in the sandwich panel fabrication and furniture markets, and these adhesives remain best sellers. Twenty years ago one-part polyurethane solutions dominated the market in other areas, but Kömmerling came along with a range of silane-terminated polymers and marketed these across the European RV sector. Isocyanate and solvent-free solutions have good adhesion on a wide range of substrate materials, and they offer good temperature and UV resistance. Today, these products are amongst our best sellers.

Aboutcamp BtoB: How is the adhesives industry evolving? For example, we hear quite a bit about 'Hot Melt'. Is this a process that's gaining ground?

Iñaki: There are different solutions to meet different needs. For example, there are thermoplastic hot melt and reactive hot melt in use. H.B. Fuller is very strong in both types of technology, but in the sandwich element fabrication market, one- or two-component, liquid reactive adhesives dominate. Some years ago, the use of reactive hot melt adhesives was analyzed for this application in order to speed up fabrication times. With reactive hot melt, it's ready to go as soon as it's cool, whereas with liquid reactive adhesives, pressure over time is needed for the chemical reaction to take place. We have very good reactive hot melt solutions, though we work closely with customers to determine the right solution. What we do is align our proudcts very closely to the conditions our customers have or want to implement. If they are liquid reactive proudcts and our customers want to change a line, we work with them from the beginning to adjust our formulations to give maximum performance under the new conditions.

Ralf: Unlike the non-reactive thermoplastic hot melts, reactive hot melt adhesive is transformed into an infusible bond, making it more resistant to high temperatures and, therefore, more durable. In Europe, reactive hot melt technology is not widely used with sandwich panel production. It is seen more often in the U.S. market.

Iñaki: That's very true. We do supply reactive and thermoplastic hot melt adhesives to factories worldwide - high quality furniture manufacturing is one example and is an application field in RV industries as well.

Ralf Fuhrmann

"We are delighted to be part of this exciting opportunity. Our name is already well established in the RV sector in Europe, and now, with the backing of H.B. Fuller and its complementary product range, we can offer our customers new technologies and even better value. We look forward to the challenges ahead and to working with our customers to solve them."

Iñaki Sigler

"Combining these two businesses allows us to offer our RV customers new technologies, expertise and capabilities. For the first time, we can submit problem-solving passion that has been our hallmark. We will continue to discover and apply innovations in adhesive technology and to help our customers excel in this area."

Company profile

H.B. Fuller

From a one-man wallpaper paste shop in Minnesota in 1887, H.B. Fuller has grown into a $2.3 billion adhesives global leader today. Its recent acquisition of Royal, further strengthens its market reach as teh two companies have very little customer or product overlap. Nowhere is this more evident than with Royal's European brand, Kömmerling, a major supplier to the RV industry in Europe.

 

Kömmerling

Headquartered in Pirmasens, some 170 km south west of Frankfurt, and founded in 1897, Kömmerling is a leading international manufacturer of high-quality adhesives and sealants. In this capacity, it has been supplying the RV industry in Europe and beyond for more than 20 years. It became a member of H.B. Fuller's global network through the company's acquisition of Royal Adhesives & Sealants in October 2017.

Source: Aboutcamp BtoB, issue June 2018

Melbourne: Warm Edge for cold bent glass

Modern glass architecture places extreme demands on the permanent energy efficiency and gas-tightness of the insulating glass. Ködispace 4SG is a tried-and-tested, high-performance warm-edge system that is ideal for demanding structural glazing projects - such as the impressive Chadstone shopping mall in Australia.

On the fine line between form and function, glass facades today have to blast seemingly irrefutable physical boundaries. What is already feasible is shown by the boldly flowing glass-steel roof of the Chadstone mall in Melbourne. The three-dimensional shape of the more than 7,000 square meter roof construction results from steel knots, rods and edge beams. They carry 2,672 cold-bent insulating glass units with the thermoplastic spacer Ködispace 4SG as a warm-edge system.

Not a single one of the 1.2 to 8 sqm insulated glass units is identical to one of the others, as each one has to adapt differently to the organic shape of the building. For this purpose, the 39 mm thick, double-insulating glass was cold bent and fixed in their respective profile during installation. Cold bending also deforms the edge bond, which can easily lead to leaks in the space between the panes of conventional spacers. The warm edge with Ködispace 4SG, on the other hand, compensates for the deformations significantly better than rigid spacer systems, as the reactive polyisobutylene chemically bonds both to the glass surface and to the silicone sealant, thereby “blending” the entire edge bond to form a flexible and resilient unit.

The high load capacity of the spacer was demonstrated by experimental component tests as well as by finite element simulations. Thus, Ködispace 4SG ensures excellent long-term stability and permanent gas-tightness even with curved insulating glass units.

Bildnachweis: Kömmerling Chemische Fabrik

Not a single one of the 1.2 to 8 sqm insulated glass units is identical to one of the others, as each one has to adapt differently to the organic shape of the building.

Chad progress

In the flowing glass roof of the Chadstone Mall in Melbourne, the flexible warm edge system with Ködispace 4SG ensures that the cold-bent insulating glass is permanently gas-tight.

For further information and to forward a specimen copy,

please contact:

Kömmerling Chemische Fabrik GmbH
Alexandra Rohr

Zweibrücker Str. 200
D-66954 Pirmasens
E-Mail: marketing@koe-chemie.de
www.koe-chemie.de

About the Kömmerling Chemische Fabrik GmbH

Since 2017, the Kömmerling Chemische Fabrik GmbH has been part of the US H.B. Fuller | KÖMMERLING Adhesives Group. The world’s largest supplier of adhesives and sealants for insulating glass applications therefore has significant expertise in this area, which is constantly being advanced at H.B. Fuller | KÖMMERLING at its German site in Pirmasens through research and new fields of application. With its three business units – Engineering Adhesives, Construction Adhesives and Hygiene, Health and Consumable Adhesives – H.B. Fuller | KÖMMERLING covers a wide range of high-quality adhesive and sealant applications that are used in a variety of industries such as electronics, hygiene, medicine, transportation, construction and renewable energies. The international group generates sales of close to 3 billion US dollars and has 6,500 employees serving customers in more than 125 countries.

Korea’s largest research laboratory dazzles with sustainable glass architecture

In the west end of the metropolis of Seoul, the globally active LG Group is re-grouping its research and development departments. The new LG Sciencepark currently employs a workforce of some 22,000 and is developing solutions for a new age of digitalization and Industry 4.0. To date, 20 buildings have been built on the campus under the management of the internationally active HOK architectural firm. A key part of the sustainably designed and LEED-certified research centers are the high-quality glass facades incorporating insulating units manufactured with the Ködispace 4SG warm-edge system from H.B. Fuller | KÖMMERLING.

The LG Group with its subsidiaries, such as LG Electronics or LG Hausys, is recognized as one of the world’s largest corporations. Founded in 1947, the company employs over 200,000 people worldwide with its headquarters in the South Korean capital Seoul. Until 2018, the subsidiaries’ research and development departments were spread throughout the city. With the new LG Sciencepark, the Group is concentrating its research laboratories in one location. Over a total area of 170,000 square meters, a building complex the size of a medium-sized German city is being built in the west of Seoul for up to 25,000 employees – making it Korea’s largest science center.

 

Innovation for a better life

 

At the LG Sciencepark, research is conducted on new technologies such as artificial intelligence, robotics, autonomous driving and on the latest innovations for efficient energy management, renewable energies or biotechnologies. To enable new, revolutionary ideas to emerge, LG wanted an inspiring environment for its researchers. The campus is intended to promote teamwork, the joy of discovery and the ability to react flexibly to changing space requirements. In close collaboration with LG, the HOK architectural office designed the Sciencepark under the LG slogan “Innovation for a better life”. By 2024, 26 buildings are scheduled to be built on the campus, with 20 currently completed. Each subsidiary will have its own individually designed building, and each building boasts nine floors, its own entrance and a spacious foyer. The units are connected to each other by landscaped pedestrian promenades that invite you to linger and exchange ideas. Several single-story bridge buildings also connect the individual units. These provide shade on the ground floors, and artistically designed gardens have been created on their accessible roofs.

 

Aktuell umfasst der Campus 20 Gebäude, die alle LEED-zertifiziert sind.

The glass facades consist of Low-E insulating glass from LG Hausys, which is produced with the Ködispace 4SG warm-edge system.

DCIM100MEDIADJI_0031.JPG

The LG Sciencepark is Korea’s largest research laboratory.

Bis zu 25.000 Mitarbeiter des LG-Konzerns werden hier an Innovationen für die Zukunft forschen.

Up to 25,000 LG Group employees will be researching innovations for the future here.

Certified sustainability

The American HOK architectural firm (Hellmuth, Obata + Kassabaum) with more than 1,600 employees worldwide, together with its local partner firm Gansam Architects, created an exceptionally sustainable architectural design for the science campus. Compared to the building units previously spread across the city, energy consumption has been reduced by 38 percent. The LG Sciencepark was certified according to the U.S. Green Building Council’s LEED sustainability standard. The research buildings received the Silver award, the Integrated Support Center (ICS) even achieved the highest level with a Platinum certification. The ICS is located at the heart of the campus and serves as a venue for events, exhibitions and seminars, and includes daycare facilities for children, as well as sports and recreation areas. The campus has also been named “Energy Champion” by the Korea Energy Agency. In addition to photovoltaic systems and groundwater heat pumps, the highly thermally insulated facades with their expansive glass elements play a major role in the energy concept.

High-tech glass panes for the Sciencepark

Some 98,000 square meters of glass have been installed on the campus to date – the equivalent of roughly 14 soccer fields. LG was able to use the proven Low-E glass from its LG Hausys subsidiary for the double-glazed insulation glass used. LG Hausys has been producing low-emissivity glass for about ten years.  As a wafer-thin metal layer applied to one surface the low emissivity coating reduces the emissivity of the glazing and serves as a thermal insulation and solar control layer.

 

Durable edge sealing

LG Hausys is regarded as an innovation driver in the construction industry and is the only insulating glass manufacturer in South Korea to date to use the high-quality Ködispace 4SG warm-edge system from H.B. Fuller | KÖMMERLING. The thermoplastic spacer for insulating glass offers maximum energy efficiency and service life with a uniquely distinctive appearance, while fully meeting LG’s high manufacturing quality standards. After all, glass facades such as those in the LG Sciencepark need to be able to permanently cope with the ever-changing thermal loads in Seoul, where winters are cold and summers are hot. To ensure that the insulating glass panes can process these temperature differences and maintain their energy efficiency, a permanently functioning and tight edge seal is an absolute prerequisite. Insulating glass with the Ködispace 4SG elastic spacer has proven to be extremely robust, resilient and durable. The warm-edge solution not only fulfils the requirements for a permanently tight edge seal in a uniquely effective way but is also extremely interesting from a design perspective. Because the reactive thermoplastic spacer system is applied fully automatically, insulating glass with Ködispace 4SG can be produced with absolute precision and optical perfection. As a result, these panes develop a unique aesthetic: no unattractive offset of the spacer profiles and, above all, no disturbing light reflections as with classic spacer systems – the black Ködispace 4SG makes the space between the panes practically invisible.

 

The insulating glass from LG Hausys with the warm-edge system from H.B. Fuller | KÖMMERLING makes a significant contribution to the high-quality and sustainable architecture that embodies the spirit of the Sciencepark. Moreover, the generous glass facades provide the buildings with plenty of natural daylight while generating light-flooded laboratories and offices for the Science Campus staff. “All design decisions were centered around the wellbeing of the researchers – with a focus on productivity and the exchange between researchers. This is where LG will focus on designing the future for mankind,” explained Ju-Hwan Shin, Managing Director LG Sciencepark Business Unit/Construction Drive Division, at the opening of the LG Sciencepark.

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The campus currently consists of 20 buildings, all of which are LEED-certified.

For further information and to forward a specimen copy,

please contact:

Kömmerling Chemische Fabrik GmbH
Alexandra Rohr

Zweibrücker Str. 200
D-66954 Pirmasens
E-Mail: marketing@koe-chemie.de
www.koe-chemie.de

About the Kömmerling Chemische Fabrik GmbH

Since 2017, the Kömmerling Chemische Fabrik GmbH has been part of the US H.B. Fuller | KÖMMERLING Adhesives Group. The world’s largest supplier of adhesives and sealants for insulating glass applications therefore has significant expertise in this area, which is constantly being advanced at H.B. Fuller | KÖMMERLING at its German site in Pirmasens through research and new fields of application. With its three business units – Engineering Adhesives, Construction Adhesives and Hygiene, Health and Consumable Adhesives – H.B. Fuller | KÖMMERLING covers a wide range of high-quality adhesive and sealant applications that are used in a variety of industries such as electronics, hygiene, medicine, transportation, construction and renewable energies. The international group generates sales of close to 3 billion US dollars and has 6,500 employees serving customers in more than 125 countries.

The Next Generation of Spacers

 

The Ködispace 4SG thermoplastic warm edge system from H.B. Fuller | KÖMMERLING has been awarded the ASC Innovation Award by the North American Adhesive and Sealant Council (ASC). With the next-generation spacer, the world’s largest supplier of adhesives and sealants for insulating glass applications has been impressing the US construction industry since 2016.

In early November 2020, the Adhesive and Sealant Council based in Alexandria, Virginia (USA), presented its coveted Innovation Award for the fourth time. The ASC Innovation Award is aimed at promoting innovation in the adhesives and sealants industry, as well as in the scientific community. An independent jury evaluates the solutions submitted for their innovative strength and the impact of the technology on the state of the art. H.B. Fuller | KÖMMERLING impressed the jurors with its Ködispace 4SG thermoplastic spacer and was honoured with second place.

 

The Adhesive and Sealant Council (ASC) is a North American association representing the adhesives and sealants industry. It is an alliance of over 100 adhesive and sealant manufacturers, suppliers, distributors and industry consultants. The ASC offers its members a platform for knowledge exchange, promotes collaboration for innovative product development and represents the industry as a common interest group.

 

Ködispace 4SG wins over the jury

 

Ködispace 4SG is a reactive thermoplastic spacer for use with insulating glass. As a next-generation warm edge system, Ködispace 4SG combines spacer, desiccant and primary sealant in one product. Since Ködispace 4SG chemically bonds to both the glass surface and a silicone secondary sealant, the entire edge seal “melts” into a highly durable unit. This results in permanently tight and extremely durable insulating sealed units. Another significant advantage is the flexibility of Ködispace 4SG: It absorbs deformations without creating significant stresses in the edge seal. This makes the warm edge system especially suitable for the most demanding of mechanical applications, such as the cold bending of insulating glass units, where it offers a clear advantage over conventional, rigid spacers. Ködispace 4SG is ideal for the production of insulating glass for standard windows, as well as more complex structural glazing applications.

 

“We are very pleased that the Adhesive and Sealant Council has acknowledged Ködispace 4SG’s potential and rewarded the value of the solution,” said Dr. Christian Scherer, Head of Business Development Glass at H.B. Fuller | KÖMMERLING. “With our spacer system, we not only ensure energy-efficient, durable insulating glass, we also offer planners and building owners virtually unlimited design freedom, thereby enabling innovative glass designs. To date, more than 15 million square metres of Ködispace 4SG insulating glass units have been installed worldwide, achieving long-term energy efficiency in thousands of residential and commercial buildings – from small single-family homes to huge skyscrapers with stunning architecture – and therefore providing a valuable contribution to the fight against climate change.”

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In the flowing glass roof of the Chadstone Mall in Melbourne, Australia, the flexible warm edge system with Ködispace 4SG ensures permanent gas tightness for the cold-bent insulating glass panes.

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The ASC Innovation Award trophy for the Ködispace 4SG reactive thermoplastic spacer system.

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Due to its special composition, Ködispace 4SG forms a chemical bond with the glass as well as with the secondary silicone sealant. The insulating glass therefore becomes a firmly bonded yet flexible unit.

Kommerling warm edge system, Ködispace 4SG, has been used in a recent extension to the Gösta Serlachius Museum in Finland. The Gosta Pavilion is the latest addition to the home of the industrialist and art collector, Gosta Serlachius. Designed by Spanish architect, MX-SI, the extension’s structure consists of 100 parallel laminated timber frames, interspersed by high windows.

The pavilion, which took 18 months to construct, is 135m long and 17m high at its maximum height. It is joined to the Serlachius private family residence, a brick house with a copper roof, by a glass corridor. The addition of this new building has reportedly increased the museum space by 500m², to a total of 1.500m², and it houses both a permanent exhibition of the Gost Serlachius art collection alongside varying exhibitions by both Finnish and international artists.

The warm edge system

The silicone-sealed glass panels in the project were manufactured by Finnish company, Seloy, with specialist sealant made by Kommerling. The bonded elements conceal a special warm-edge system, which thanks to flexible edging, is said to be equal to the wild temperature extremes of the local climate. At the heart of the sealing process is a separator called Ködispace 4SG.

According to Kommerling, the warm-edge system menas that insulation panes are ‘extraordinarily’ robust, resilient and durable and also ideally suited for the physical requirements of structural glazing.

Glass with aesthetic properties

Ködispace 4SG is said to considerably enhance the aesthetic properties of glass elements; there are no ‘ugly’ separator displacements in the three-ply insulation panes or disruptive light reflections that can be caused by metal parts. The black sealant ensures that the space between panes is almost invisible and sight lines from within the museum are unhindered, giving the impression of a ‘fluid transition’ between the building and its surroundings.

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Q&A with Dr. Knut Göke, product manager at KÖMMERLING Chemische Fabrik GmbH

GGP: What sort of problems can arise with glass facades?

KG: The extreme temperatures occurring in the faces cause the insulation glass to expand and pull together again, thus exposing the edging to enormous stresses. If the sealant is not able to accommodate this movement and instead compensates for them, the seal becomes leaky, hence elasticity of the sealant is a significant precondition for permanently, well-sealed insulation glass. If the seal cannot be maintained then there is a risk of loss of gas and thermal insulation. Material incompatibility among the adhesives and sealants used and in interactions between construction materials deployed can also cause additional problem, which in the worst case scenario can lead to expensive and hazardous structural damage.

GGP: Why is Ködispace 4SG so well suited to structural glazing?

KG: Black polyisobutylene is extruded from the barrel direct on to the disc to create a well-sealed, homogeneous separator. In the process it replaces primary sealant, metallic separator and desiccant. Its special formulation allows it to form a chemical bond with the glass and secondary sealant silicone. The overall edging remains permanently elastic and gas-tight over the long term. Kommerling also offers suitable secondary sealants that are fully compatible and thus provide a reliable and safe warm-edge system.

GGP: How has this sealant benefited the Gosta pavilion?

KG: Serious cold puts additional strain on glass. The warm edges of Ködispace 4SG are great at surviving the severe sub zero temperatures of the Finnish winter without any problems. It is clear that this climate places great demands on thermal glass insulation and its durability. Without the appearance of an unsightly separator, the warm edge approach allows the interesting architectural design to deliver maximum impact.

Source: Glass & Glazing Products, issue October 2016

The last crime figures show that the police registered exactly 167,136 burglaries in Germany last year. Which means that another flat is ransacked every three minutes on average. Doors and windows are frequently exploited vulnerabilities for break-ins. But the protection from burglars can be markedly improved by gluing.

The annual number of burglaries has been on the increase again for a while, most recently by nearly 10 percent in 2015. The perpetrators very often break into flats and houses by prying open a window. A simple screwdriver will suffice to do this with standard windows. Leverage is applied to design-related vulnerabilities: the connections between the glazing and casement, between the casement and window frame, and between the window frame and wall.

Tested resistance classes

A remedy is provided by anti-burglary windows with demonstrably tested resistance classes. Which is also why the police is recommending components rated RC2 or higher. But a window will only prevent intrusion if the safety chain formed by the bonding of the glass, rebate area and connection to the wall is completely closed and the entire system meets the requirements of the desired resistance class.

Glued all around

What this means for the glass bonding is that glass strips need to be screwed or glued in place to make the grade. A far better solution for this is to glue the insulating glass into the casement, however, because the circumferential bond will fuse them into a single entity.

Only a small number of glazing blocks will now be required for load transfer, if any at all. This eliminates a leverage point for prying the window open at the glass joint. The gluing additionally improves the statics of the entire casement, which is rendered torsion-resistant and virtually impossible to twist. The consequence: A burglary tool applied to only a single point of the window will be unable to gain enough leverage for bending the casement. The gluing hence not only strengthens the glass joint, but indirectly also the connection between the casement and window frame.

The recommended RC2 resistance class is furthermore reached with particular ease if the insulating glass is glued to the casement. This offers tangible advantages for window makers and fitters: The blocking is reduced or even done away with entirely, with no separate fastening of glass strips required. All the window needs now is the right RC2 fitting, and appropriate installation at the building site. In addition, this can also be done using profiles with no additional steel reinforcements.

Polyurethane glue meets the requirements

To be recommended as an optimal antiburglary solution is the gluing position at the base of the rebate with a polyurethane adhesive called Ködiglaze P from Kömmerling. This can not only be used for RC-gluing to plastic profiles, but also all the other commonly used frame materials such as wood, wood/aluminium and aluminium, for example. The glue is available in a one-component version in 600 ml sausages or also in a two-component version for application with mixing and dispensing systems.

Glued to the rebate base

The bonding with the rebate base achieves the best statics: As opposed to glass edge bonding, the casement will not require additional overlaps for reinforcement. The PUR adhesive furthermore achieves a high mechanical stability and is hard to cut. It can even be used to provide RC2-compliant fixed glazing directly at the building site. The one-component adhesive is easy to handle, enabling the insulating glass to be glued into the ready-assembled frame on site without difficulties.

To ensure a permanently secure bond, the manufacturer’s adhesives are compatible with most insulating glass sealants available on the market. This also means that they are attuned to the commonly used polysulphide- or polyurethane-based insulating glass sealants in their chemical as well as mechanical properties. These materials are furthermore compatible with the commercially available PVB films used to increase the glazing’s anti-burglary effect from resistance class RC2.

 

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The polyurethane adhesive can not only be used on plastic to meet the RC requirements, but also on all other commonly found frame materials
such as wood, wood/aluminium and aluminium, for example.

 

Source: Adhesion, The Trade Journal for Industrial Adhesives and Sealants, 3/2016 Vol. 13

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