Photonics based solutions from ultraviolet to infrared

News of the Month - Case Stories

Did you know what UV light has to do with electric guitars?


Loud music. A good band on stage. At concerts you just always have a really good time. Especially the feeling of a passionately played guitar solo with an electric guitar is loved by many concert goers. But what does an electric guitar have to do with UV light ?

Fender Musical Instruments Corporation, one of the world’s leading electric guitar manufacturers, needed to decrease the cycle time on their guitar body undercoat line in their Corona, CA facility. Countless racks of drying guitar bodies occupied valuable factory floor space and increased Work In Progress (WIP). This problem could be solved with the help of UV curing.

Read the full story here.

Did you know what UV light has to do with school vacations?

 UV light disinfection in classrooms

All schools were asked to do a lot during the pandemic; teachers, students and parents had to react carefully, prudently and flexibly. In the new school year, children and teachers are eager to meet again at school. Learning together, playing sports or music - the desire for a safe presence after the vacations is only too understandable. In addition to the usual hygiene measures, additional protection is needed here. Ventilation is enormously important in this respect. But is opening windows enough? And what if ventilation is not possible at all? Air cleaners help - if they are chosen correctly. Fan power, air flow rate and the right technology. Preferably with UVGI disinfection, preferably from an expert.

Click here to read the case story: August-Gaul School gymnasium

Click here to read the case story: Schoolrooms in the Franciscan High School

Classroom empty during the vacations? Ideal to install air purifiers

Empty classrooms during the vacations are ideal for installing new air purifiers. In Germany, various government programs subsidize the purchase of air handling units or mobile air purification devices, including UVGI disinfection of the air. Air disinfection by means of UV-C light is the most effective and cost-efficient technology.

Taking the bus to school? UV air disinfection for buses

If you want to take the bus to school: Our Soluva® Air V now also disinfects the cabin air with UV-C light.

Did you know what infrared heat has to do with your visit to the theater?

Infrarot und UV-Technologie für den nächsten Theaterbesuch

Movies, concerts, theater performances - when they take place again after the Corona Lockdown, these cultural events will have many enthusiastic visitors.

Hardly anyone thinks about the technology required for stage performances or during filming. Equipment for suspensions and lifting devices, for example, must have reliable corrosion protection. One manufacturer for this technology in film, television, theater and concert halls has been able to significantly improve the quality of the coating while also saving costs by using infrared heat technology.

Click here to read the full success story on infrared drying of coatings on theatrical equipment

Sandwiches during the break? Bread has a longer shelf life due to infrared germ reduction

Intermissions are what make a theater performance really round. In addition to pretzels, delicious sandwiches are also part of the break equipment. To keep the bread tasty for longer, it is treated with IR emitters for four seconds before packaging. This extends the shelf life by three to four days.

Taking the bus to the theater? Our Soluva® Air V disinfects your cabin air

If you want to take the bus to a theater performance: Our Soluva® Air V now also disinfects the cabin air with UV-C light.

Did you know what UV light has to do with Children's Day?

UV curing baby diapers

June 1 is Children's Day. This day was created to draw attention to the rights and needs of children. This includes the basic supply of food and hygiene products for the child.

Diapers are an essential item, especially for young children - cloth diapers were still used in the past, but since the 1960s most parents have resorted to disposable diapers.

Over time, diapers have become more and more advanced. However, the most important feature is still leakage protection. So-called "superabsorbents" are usually used for this purpose. These are special polymers that can absorb many times their own weight in polar liquids. For example, one gram of superabsorber can absorb 500 grams of water. The use of this material makes diapers thinner and creates less waste. In addition to strong absorbency, superabsorbents also help to keep childrens’ skin healthy.

UV light helps in diaper production

Superabsorbents are made through the chemical process of polymerization. In UV polymerization, it is crucial to carefully monitor and control the energy and intensity of UV radiation. Microwave lamp systems are used in this process. These UV lamp systems are very reliable, have constant UV output and low downtime. This is essential for the production of superabsorbents, as the production process runs twenty-four hours a day and has a high production volume.

Would you like to know how polymerisation works? Then take a look at our special pages for UV curing .

Did you know what UV and IR have to do with your picnic?


A nice picnic rounds off the outing. For this, the coffee stays hot or the drinks cool, if you have filled them into suitable insulated bottles beforehand.

Infrared System cures Decorative Coatings on Insulated Containers

Decorative motifs on insulated containers, such as coffee pots or vacuum flasks, must be scratch-resistant, tough and ideally also dishwasher-proof. Alfi GmbH in Wertheim in Germany, a leading manufacturer of high-quality insulated flasks, has resolved this problem using an infrared system from Heraeus Noblelight.

Vacuum flasks from the Isobottle range are made from stainless steel with a painted coating. Decorative patterns are applied to the outside of the flasks using spot colours or screen-printing. Alfi applies the UV paints at six stations on a printing machine. When Alfi redesigned the base of its flasks and opted for a powder coating in order to make them dishwasher-proof, it became clear that the decorative coating would not pass the crosshatch test. In order to resolve this problem, Alfi decided to use heat as part of the post-curing process for the UV paint. Jürgen Hössel, head of assembly and service at Alfi, explains: “We opted for infrared radiation, because in comparison with hot air it has a far higher power density, responds very quickly and is therefore easy to control.” The process parameters, such as the distance between flasks and the heat source, and the process times hat to remain constant, so that all the flasks were processed under the same conditions. However, at the same time it was necessary to be able to adapt these parameters to suit the changing requirements.

The post-curing process begins when a robot places the printed flasks on a rotary plate between two infrared modules. The plate ensures that the products, which are rotationally symmetrical, are evenly heated. The two infrared lamps, which are positioned opposite one another, have a total rated power output of 6 kW. They are fitted with short wave, twin tube emitters which are arranged vertically in each module at a slight angle. Together with gold reflector on the emitters, this ensures that the heat is aimed directly at the product. The use of the infrared system after the UV curing process speeds up the chemical reaction (post-curing). In addition, the initial adhesion of the coloured film to the substrate is improved and the products can be processes or packed immediately. Jürgen Hössel is proud of the screen-printing machine: “The entire printing process is now fully automatic and has functioned perfectly right from the start. We have had a viewing panel installed and enjoy showing groups of visitors our infrared drying process.”

CaseStory to download

Did you know what Easter has to do with UV-C light?


Large rooms such as movie theaters, theaters or churches are difficult to heat. This is often done with recirculating air heaters, where a burner heats the air and it is then blown into the large room. Viruses and other germs are distributed in this way, however.

The Protestant city church in Groß-Gerau is heated by a burner in the basement. Since the Corona pandemic, the heating must remain switched off for safety reasons when people are in the church. Heating has to be done only in between so that the organ is not damaged. In addition to all the other measures, such as keeping a distance, hand disinfection and masks, a chilled church interior makes church services more difficult.

In search of technical solutions, the church council contacted the experts for UV disinfection from Heraeus Noblelight. They calculated and designed a disinfection system that exactly matched the need. The components had to ensure air disinfection with the existing air flow without negatively affecting the performance of the heating system. For this purpose, UV-C lamps were installed in the air shafts . There UV-C light quickly and safely inactivates viruses in the warm air flowing past. UV light cannot escape unintentionally and only purified warm air enters the church interior.

Holger Tampe, church warden: "We are the first congregation in the Protestant Church (EKHN) that can disinfect the air with our heating system. This is the perfect addition to our existing hygiene measures!" In summer, the system provides germ-free ventilation without heating.

Café Schien

Companies prepare for openings and loosenings. What does UV light have to do with it?

For over a year, the world has been struggling with Covid-19. Especially businesses that rely on customers physically coming to them have suffered from the prolonged lockdowns. But relaxations and openings are hopefully on the horizon soon. Thus, the question for many tradespeople is how to continue to protect customers and employees during openings.

Keeping distance and wearing a mask are certainly important measures for this. But there is a useful supplement to the use of classical methods - air purification devices with UV light. Because UV light inactivates viruses of any kind immediately and permanently. Soluva® disinfection units ensure sufficient air exchange. The air contaminated with germs is sucked in, disinfected inside the device, and released germ-free. This reduces the risk of infection enormously.

Soluva® devices have already been successfully installed in various locations. Take a look for yourself:

With coffee and cake at Café Schien

Everyone would like to sit in a café and comfortably drink a cappuccino or eat something. And Jens Arndt, master confectioner and operator of Café Schien in Hanau, would like to offer this to his customers again. As soon as this is possible, two UV-C air purifiers from Heraeus Noblelight, which have already been installed, will ensure fresh air in his guest room.

Click here to read the whole story

Seminars at Swagelog

Seminars, conferences or technical trainings are often face-to-face events that cannot always be replaced equally by digital alternatives. Especially in training courses, the topics of air quality and safety play an important role. The air cleaning devices from Heraeus now enables the company Swagelog Frankfurt to hold in-house seminars again. The company has built the wall-mounted unit on a mobile construction, allowing it to be used on a mobile basis in the training rooms.

Click here to read the whole story

Dancing in the Berné dance school

Hip-hop, tango or line dancing, dance students ¬and dance enthusiasts are waiting to be able to go to clubs or dance schools again. Despite ¬adherence to typical hygiene measures, dance schools ¬can often only offer one-on-one lessons during pandemic periods. Adequate ventilation is often a problem. That's why Britt Harrington and Ute Berné, owners of the Dance School Berné, use sterilization equipment in the dance hall and bar area. This way, the two can offer their participants and instructors more safety when normal dance school operations hopefully start soon.

Click here to read the whole story

Studies prove the efficacy of UV light against Sars-CoV-2 and its mutations:

Tested for the first time under real conditions: UV-C light can reduce viruses in classrooms by up to 99%, study with Fraunhofer Institute for Building Physics IBP.

UV-C air purifiers destroy surrogate viruses up to 5 log levels immediately and very reliably at high air flow rates, study with Hygenie Insitut biotec GmbH.

Unique test with real corona viruses on surfaces. The result: 99.99% inactivation of the SARS-CoV-2 virus. Study with University Hospital Tübingen.


Did you know what infrared heaters have to do with Valentine's Day?

Infrared heat and UV technology help to make the colour design for your perfume bottle unique!

Read here how infrared heat dries a coating on glass bottles:

Fragrances and perfumes are not filled in simple containers, but in flacons that have been refined using various decorative techniques or coatings. A carbon infrared oven from Heraeus Noblelight helps Stoelzle Flaconnage to dry sprayed organic paint on highly decorative perfume bottles significantly faster. Compared to a normal hot air oven, the new installation also saves significant time and space.

Infrared emitter helps with increased demand:

Stoelze Flaconnage supplies decorative glass bottles for spirits, perfumes and cosmetics. Increased demand led to a bottleneck in the paint drying process. A decommissioned ceramic spraying plant was to be reactivated for this purpose, but the existing space for a hot-air oven for drying was not sufficient. At the same time, the paint drying times were to be reduced in order to keep up with the production speed.

Tests showed that coatings on glass containers could be cured in 90 seconds at a production speed of 4.4m/min using carbon infrared heaters. A hot air oven would have taken 25 minutes. After testing, a 5-zone oven was installed at the Knottingley site over the existing conveyor system. The heaters respond very quickly, allowing the oven to be switched off or on within seconds in the event of a production gap or an unexpected belt stop.

"Apart from meeting our requirements for space saving and fast curing phases, the new oven also allows for greater control during ink curing" explains Shayne Carr, Project Engineer at Stoelzle. The new system is much more energy efficient than the hot air alternative and the controllability of the heaters allows for quick adjustment to changes in bottle size.

Further information about infrared drying of coatings, paints and varnishes

More about the heating process in the glass industry

More about the curing of UV printing on glass


Did you know how infrared emitters seal your wiper water tanks?

Infrared heat technology welds plastic wiping water containers reliably and unbreakably!

To produce a wiper water tank you need, for example, glass-fibre reinforced polypropylene for the water treatment and what else? - Infrared radiation for welding, of course!

The cylindrical water tanks are made from two halves, which are then welded together using short-wave infrared radiation. The glass fibres ensure that the tanks are as robust as possible, because they should be able to withstand a pressure of about 10 bar in use. But they are also the reason why conventional welding with contact heat is difficult to perform. The glass fibres in the plastic are exposed by melting the surface and damage the hot contact plates.

Infrared emitters transmit the energy without contact and generate the heat in the material first. This means that no material can get stuck to the heat source. An infrared module heats the ends of the prefabricated cylinder halves, then the module is automatically moved out- The parts with the heated, soft ends are pressed together and thus welded.

Tests have shown that this connection also holds under very high pressure, up to 28 bar were applied without destroying the connection.

You want to know more about infrared welding and the use of this product? Read interesting facts on our Special pages for infrared

More on infrared heat for plastics Applications


Astonishing Productive Light Stories with 5-years Anniversary!

For five years now, we have been telling you every month where you encounter our lamps, emitters and systems in your everyday life. Infrared heat, UV technology, flash lamps and systems or lamps for optical analysis - not always visible at first glance, but always reliable and efficient!

What was your favourite story? Look for yourself 5 years newsletter

YOTL Novmeber 2020 magazine

Did you know what November 26th has to do with specialty light sources?

November 26th, is the World Magazines Day. The origins of this special day can be found in the 14th century. At that time, private, political and business news within a city was already conveyed through merchant's letters. With the invention of letterpress printing in1445, a mass distribution of press products was possible. The actual magazine as we know it, has only been popular since 1704.

Today, magazines look much higher quality. Have you ever paid attention to the glossy finish? Special varnishes are used to finish magazines. UV technology supports the curing process to create an evenly hardened and brilliant surface.

The printing process is also much faster and more automated today. Digital printing processes are widespread and are particularly used for personalization, small print runs and high printing speeds. Infrared emitters or UV LEDs support the drying and curing process which enabled increased efficiency and cost reduction. Depending on the color and ink, infrared radiation and UV technology or a combination of both are used to achieve reliable drying results and thus high-quality print products.

Do you want to learn more about inkjet digital printing processes and the use of special light sources? Discover more interesting facts on our special pages .

More about our applications .

Infrared for thermoplastic material

Did you know what infrared heat has to do with laundry transport in hospitals?

Mountains of bedclothes, towels, work clothes, protective clothing or textile medical products accumulate daily in hospitals or nursing homes. A continuous logistics is necessary for supply and disposal, for in-house or external laundry.
Hardly noticed but still indispensable for laundry transport are reliable transport boxes. They should be light but still robust and reliable. The complex manufacturing process benefits from targeted use of infrared heat.

HDPE becomes a transport box
HDPE (high density polyethylene) thermoplastic material is injection molded into sheets. These panels are already provided with all the fixing straps, holes and slots that will later be needed to form the final product, a new lightweight transport box.
Robot Units in the United Kingdom designs and manufactures specialized equipment that assembles complex containers from flat plastic panels. A major challenge in this process are the tabs and holes, which are all different in thickness, geometry and color.
The panels are first attached before short-wave infrared emitters are switched on in an individually programmed sequence. This ensures that the heat matches the geometry, thickness and color of the plastic part exactly.
Infrared radiation selectively melts the surface of the plastic within a few seconds and the sheets are then folded by a pneumatic joining tool. In this way, the specifically heated joining points are welded together. Tests showed that the joint was even stronger than the starting material. Cold air then floods the system and the box can be removed. The boxes are fitted with wheels and are then ready for use for laundry transport in hospitals.

More about plastic welding with infrared radiation

IR for brakes

Did you know how infrared emitters help with braking cars?

Whether we drive to work by car, take our bikes to go shopping or go on vacation by motorcycle, we always want to arrive healthy. To achieve this, our vehicle should have well-functioning brakes that bring us safely to a halt in critical situations.
Did you know how infrared emitters contribute to the production of safe brake systems?

Friction materials are important for well functioning brake systems. A leading manufacturer of friction materials for brake discs, brake pads or brake blocks for the automotive industry optimized its production with the help of carbon infrared emitters .

By replacing the previous short-wave heating system with carbon infrared modules (CIR modules), the company is now experiencing less downtime and considerably easier maintenance. Furthermore, the new CIR system proves to be much more controllable.

The manufacturer of friction materials has three powder coating lines at one of its production sites, which are used to create a black finish coating on brake pads. The curing of the powder coating was previously effected by an infrared system using short-wave halogen emitters. However, these emitters were proving to have a relatively short operating life and their replacement was difficult. The halogen emitters ran in a line along the furnace conveyor system. Therefore, the entire spotlight system had to be lifted mechanically to gain access for the changeover.

To solve these problems, Heraeus Noblelight developed a system with carbon infrared emitters for easier retrofitting. The carbon infrared system consists of four 72 kW zones, each of which is controllable to suit the product being coated. The module zones are arranged transversely to the conveyor motion and each zone can be easily rotated through 90°. If an emitter change is required, this can now be done without the previously required mechanical lifting system.

The new system has proven to be extremely successful in operation. It is now much easier to replace all emitters when necessary. In addition, the CIR emitters have proven to be very durable and reliable: the company has had to replace only two emitters since the installation 15 months ago.

Further information about infrared emitters

Infrared systems for the automotive industry

More about infrared and special emitters in the automotive industry

Fire Truck

Did you know that UV light helps firefighters stay operational?

The corona virus has a tight grip on us all and still impacts our daily life. It also impacts the local fire department. Every time they respond, there is a risk of direct contamination via the equipment or other contact surfaces within vehicles. A corona infection would have serious consequences, endangering the fire department's operational readiness and threatening the safety of the surrounding community.

It is therefore essential to disinfect the equipment and vehicles after each use. However, disinfecting with wet wipes takes a lot of time and effort, and the chemicals also attack surfaces, damage the environment, and over time the microbes can become resistant.

A time and cost-saving alternative is disinfection with UVC light , which reliably inactivates viruses, kills bacteria and fungi - without using chemicals.

With the new portable Soluva® UV Handheld Disinfection System , the interiors of fire engines, tables with laptops and emergency radios can be disinfected quickly and reliably after an operation. This ensures the operational readiness of personnel, vehicles and equipment.

The fire department also uses the Soluva® UV Disinfection Chamber

The Soluva® UV Disinfection Chamber enables 360 degree irradiation and disinfection of thermal imaging cameras, flashlights and emergency radios, and encourages use due to its short disinfection time and easy handling.

chocolates trays benefit from IR heat

Did you know how infrared heat helps with the packaging of chocolates?

Sweets, chocolates and other types of confectionery are packed in boxes with plastic insert trays. These trays are manufactured by thermoforming plastic foil. Infrared emitters from Heraeus Noblelight are helping to heat bioplastics before forming. These emitters transfer energy without contact and generate the heat predominantly in the material itself. As a result, heating is targeted and fast. The forming process is optimised and reject levels are reduced.

Trays made of bioplastic for chocolates
A relative new development is to produce the inserts in bioplastic. Bioplastics are environmentally-friendly, not least because they are produced from renewable raw materials and are not petroleum-based. In addition, they are degradable and can be composted.

Corn starch is used to manufacture trays, blisters and sorting inserts in chocolate packaging. To do this, the foil must be heated before and then formed. Usually, using conventional plastic foils, this takes place in several stages, each involving a few seconds heating, until the deformation temperature is achieved. However, properties such as strength, flexibility and stability of the corn starch foil can be detrimentally affected by long heat-up times. This is because water can leach from the foil in the heating process and this can lead to embrittlement.

IR for efficient heating of foils
After intensive testing, short wave emitters demonstrated that they were particularly suitable for the task, as using high power, they could bring the foil to the deformation temperature of around 140ºC in approximately two seconds. This is so fast that there is virtually no water loss. A heating module with overlapping emitter ends and several heating zones ensures a homogenous temperature distribution across the foil. Consequently, the forming process for corn starch foils is optimised and it has also been shown that reject rates at process start-up can be minimised.

Learn more about IR and UV for plastics processing

Home Office

Did you know what IR and UV have to do with home office?

A lot of people are currently spared the long way to the office. The reason is that they can work from home. Instead of being stuck in traffic jams, the commute to work takes only a few seconds. The job is done at home, no problem in times of the internet.
But did you know what IR and UV have to do with your home office?

UV for Optical Fibers
Many households use fiber optic as their internet connection. The advantage is that the data transfer is faster than with DSL connections or TV cables. UV light is needed to produce glass fibers. The UV-curing coating guarantees that the glass fibers are flexible, while remaining stable and being protected. Read more about UV-curing of glass fibers here.

UV and IR for Screens
Before surfaces can be wetted, coated or bonded, they must first be pre-treated. Conventional methods for this are mechanical roughening, the use of primers, flame treatment or plasma treatment.

A very uncomplicated alternative, which is also gentle on the material and cost-effective, is the treatment with UV light . No electrostatic charge is generated, and UV light is suitable for both conductive and non-conductive material. LCD displays are cleaned with UV lamps during production and plastic containers are activated before printing.

Infrared Emitters help to dry the needed coatings on the displays.

Printing with IR and UV
When manufacturing high-quality keyboards, the necessary electrical connections are printed on PET membranes. This screen print is dried and the membrane must not slip under any circumstances, as this would influence the electrical connection.

An innovative, very compact carbon infrared system was fitted exactly in the available space directly in front of the screen printing station. The pre-treatment of the membranes with infrared heat today ensures the quality of the keyboards.

The keyboards are then printed with UV-curing inks . These are usually applied by screen printing. The same technique can also be used to print logos on computer mice or screens. Afterwards coatings are sprayed on and then cured with UV. This prevents the products from scratching and the imprints last for a long time. They are resistant to chemicals and get the soft-touch effect.

Would you like more information? Contact us.

Vaccination Emitters

Did you know what special emitters have to do with vaccination?

Whether vaccine sera or other medication, ampoules and syringes are often used. These should be hygienic and unbreakable, safe to use for medical staff and clearly labeled. Infrared radiation and UV technology help in the manufacture.

UV labeling for medical devices
UV inks are ideal for screen print, offset, pad and inkjet printing onto a variety of substrates for both marking and decorating. Whether you want to print a logo onto a plastic part, measurement markings, or on-demand printing of serial numbers, UV curing can increase productivity and print durability.

UV curing adhesives in the medical industry
Needle retracted syringes make work safer for medical personnel. A UV-curing adhesive connects the stainless steel needle to the plastic body of the syringe. UV curing adhesives are ideal for such applications with adhesives and pressure sensitive adhesives. UV technology improves quality and speeds up production. Read here our case story!

Infrared heat protects glass ampoules from breaking
Packaging glass for medications or tablets must be tempered after it is heat-formed, otherwise thermal stresses can lead to glass bottles or ampoules cracking or shattering. The new MAX infrared oven carries out this stress-relieving process five times faster than conventional electric heating methods, while cutting energy consumption by 90%.

Would you like more information? Contact us.

Did you know what beer has to do with UV light?

Flash disinfection Beer bottles

Whether at noon or in the evening, everyone likes to spend time outside in the warm temperatures. Barbecuing together is a particularly enjoyable event. Salads are prepared. Steaks sizzle on the grill. And of course, one thing that should not be missing in Germany: a cold beer.

We Germans have been known for beer and especially for the Reinheitsgebot (purity law) for a long time. In honour of the Reinheitsgebot, the day of German beer is celebrated every year on 23 April. This holiday has been celebrated since 1994. The Purity Law allows only four ingredients for beer: hops, malt, yeast and water, and is supposed to guarantee the unique taste of Germany's favourite drink. However, this taste can only be enjoyed properly if no bacteria can develop in the beer. Some bacteria are a serious health risk for humans. Therefore it is important that the bottles are disinfected before filling.

Did you know that ultraviolet light is used for this? UV light in the wavelengths from 200 to 300 nm has a disinfecting effect. It is absorbed by the microorganisms and therefore destroys their structure. Within seconds, viruses and bacteria are rendered harmless without affecting the taste of the beer. The beer bottle is rendered harmless. This process is not only effective, but also environmentally friendly, as no chemicals are used and no by-products harmful to health can be produced.

It is particularly useful to use flash lamps that emit UV light. Beer bottles usually pass through the filling lines at high speed and therefore must be irradiated with a high UV dose in a short time. Flash lamps are ideally suited for this purpose. Flash lamps from Heraeus are operated at high average power, pulse durations in the millisecond range and repetition rates in the kilohertz range. They offer high efficiency and high stability.

Would you like to learn more about UV disinfection? Read more about the mechanism of action or about new trends and products .

Did you know how UV and Infrared can help you right now?

UV technology and Infrared heat for disinfection and more

Right now, cleanliness and a reduction of dangerous germs is extremely important.

UV technology helps to disinfect air and surfaces , to destroy germs in drinking water and to sterilize packaging.
Infrared heat reduces germs on baking tools and bread , giving it a longer shelf life.
And those who buy canned goods or ready meals now also benefit from powerful infrared and UV technology.

Did you know how infrared emitters refine whiskey?

Infrared Toasting Helps Ensure Whisky’s Unique Taste

High quality spirits get their special taste by storing in barrels. Such wooden barrels are roasted before filling. Previously, roasting was done with an open flame. A method that is not without risks for the barrels and the workers. Infrared heat also handles special heat processes efficiently and controlled.

Infrared Toasting Helps Ensure Whisky’s Unique Taste

A purpose-built infrared heating system from Heraeus Noblelight is being used by Edrington, the premium spirits company, to assist in regenerating casks. This is achieved by replacing the existing ends of refill casks with new toasted ends toasted in the Hereaus Infrared toaster. The impact of the flavours created by toasting (and charring) will diminish each time the cask is filled with new make spirit. This is one of the reasons for regenerating casks. Traditionally, this has been done by using a naked flame to char both the body of the cask and the ends. However, this can produce an inconsistent finish and, in today’s world, has Health and Safety implications. As a result, Edrington turned to infrared specialists, Heraeus Noblelight, to investigate the possibility of a more efficient alternative to the traditional process. Successful extensive trials at Heraeus’s Neston Applications Centre established that infrared would satisfy the end toasting requirement and consequently, an 80.4kW carbon medium wave oven was installed at Edrington’s Muirhall Cooperage site. The heating zone of the oven can accommodate two cask ends and is fitted with an optical pyrometer. The pyrometer measures the temperature of one of the cask ends and its output automatically regulates the power to the twelve 6.7W IR emitters, which, initially, heat both cask ends and then hold them at temperature. A typical cycle time is ten minutes, but this can be adjusted at the control panel. The cask ends are loaded into the oven, two at a time, by means of a sliding drawer. The heating cycle is started automatically, or manually from the control panel, once the drawer has been closed. If a drawer is opened during the cycle, the heating is automatically switched off and a flashing red light indicates that the toasting is incomplete. In operation, it has been found that full oven power is required for only two minutes to bring the cask ends to the required temperature, which is then held for the remaining eight minutes at just 50% power.

Richard Russell, Cooperage Manager at Edrington, is very pleased with the new installation: “Quality is paramount for Edrington and the regeneration of our refill casks is an important element in this. The infrared system now gives us a consistent quality and cask end treatment has now become a controllable operation, which is easy to use.”

Click here to learn more about infrared heat for the food industry.

Would you like more information? Contact us.


Did you know, what analytical lamps have to do with the safety of ski goggles?

Clear air, white snow-covered mountains and rapid descents. Skiing is simply a must for many in winter. It's especially much fun when you can whizz down the slopes in wonderful sunshine or enjoy a cool drink on the sunny terrace of a mountain hut.

But particularly with sunshine and shiny new snow the danger for our eyes is very high. This is because snow reflects light and therefore also reflects a large proportion of ultraviolet (UV) rays. If our eyes are then not properly protected, the UV radiation can damage the cornea of the eye. Very strong radiation causes burn similar to sunburn of the cornea and conjunctiva - similar to those of normal skin - which in severe cases can destroy and detach the outermost layer of the cornea. In these cases, nerve endings are then exposed, which leads to severe pain, extreme sensitivity to light, tears, reddened eyes and foreign body sensation in the eye. Experts speak of snow blindness in such cases.

It is therefore important that we always wear sunglasses or ski goggles with UV protection, which block dangerous UV radiation. However, there are considerable differences in quality, as not all sunglasses block UV radiation equally well.

UV/Vis spectroscopy can be used to measure the transmission of spectacle lenses over the entire spectral range.

To perform this measurement, a spectrometer is used, which requires a broadband light source. FiberLight® Xe from Heraeus offers a broad continuous UV-Vis spectrum with very good flash to flash stability due to carefully selected electrode materials. This makes it, in addition to its long lifetime, the ideal light source for spectrometers.

The transmission spectra resulting from the measurement then provide information about the UV range in which the light is absorbed. With an absorption in the UV range from 200 to 400nm, the glasses then offer complete protection against UV radiation and the skiing day can be enjoyed without any worries.

Click here to learn more about analytical lamps like Deuterium lamps , FiberLight® D2 and FiberLight® Xe .

You are also welcome to contact us if you would like more information.

Infrared emitters make textiles flameproof

Did you know how infrared emitters make your curtain flameproof?

When it's cold and dark in winter, everyone likes to light a open fire or candles. Have you ever forgotten to extinguish your candles? Have you ever come to close to a curtain or armchair in front of the Christmas tree with real candles? Home textiles that are flameproof can then help to prevent room fires.

In the production of such textiles, infrared emitters carry out the necessary drying processes.

Essex Flameproofing is a long-established company which works with designers and specifiers, fabric manufacturers, major retailers and upholsterers to impart fire-retarding properties to furniture and fittings. This is achieved by treating the fabric of the upholstery or curtains with flame-retardant chemicals to comply with British and foreign standards and flame retarding regulations. The application of the relevant chemicals/coatings is a wet process and drying is, necessarily, an important production stage.

Upholstery is made fire-resistant by spraying the back of the upholstery cloth with a latex flame-retardant coating, which must then be dried. Previously this was achieved by heating the coated upholstery web with a long wave infrared system. However, to meet increasing demand for the company’s expertise, it was decided to investigate ways of speeding up the drying process.

As a result, a new Heraeus medium wave infrared system was retrofitted. Now coated upholstery fabric can be dried in a single pass whereas three passes were often required with the previous system. This is partly due to the efficiency of medium wave infrared in water removal, as radiation at medium wave frequency is readily absorbed by water molecules and the energy is rapidly converted into heat.

The new system also finds further employment when it is used to provide extra capacity to dry treated curtains. Curtains are made fire-retardant by spraying them with a salt-based solution, which soaks into the fibres. When curtains come Scotch guarded, or when fabrics have low permeability, the uptake of the solution needs to be assisted by passing the wetted curtain through nip rollers. Normally, curtains are dried on their own line, but when there is capacity on the new Heraeus system, they are passed through for drying, again at twice to three times the speed.

Click here to learn more about infrared heat for the textile industry.

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Infrared system is drying water-repellent coating on outdoor clothing

Did you know how infrared emitters protect you from rain?

Good outdoor clothing offers double protection from rain. A water repellent coating on the clothing fabric removes surface water while the garment itself is water-proof but “breathable”. The water-repellent coating must be thoroughly dried after application so that the fabric can be further processed.

Quick and efficient drying without burning the materials? This is where infrared heat comes into play.

A carbon infrared system is helping to increase production line speeds by providing pre-drying of a water repellent coating applied to a specialised fabric used in the manufacture of outdoor clothing. Moreover, its ease of control is also ensuring that there is no damage to the fabric caused by over-heating.

The best outdoor clothing provides double protection to rain, as a water repellent coating on the clothing fabric removes surface water while the garment itself, with its combination of textile fabric, membrane and lining is water-proof but “breathable”. The application of the water repellent coating is an important part of the production process but it is also important that the chemical coating applied is thoroughly dried before the next manufacturing stage. Conventionally, this is carried out in a Stenter, a very versatile, gas-fired oven used extensively in the textile industry. However, when a wellknown manufacturer of top quality outerwear had to deal with meeting a significant rise in market demand for its products, as well as handling a more diverse product range, it soon realised that drying speeds had to be increased to match increased production speeds.

The answer lay in fitting a carbon medium wave infrared system immediately in front of the Stenter to achieve the required degree of pre-drying. A determining factor in the selection of infrared for this application was the fact that it would have been impossible to fit a hot air oven easily in the available space and it would have been necessary to carry out a major and costly re-organisation of the line. The hot air oven alternative would also have involved significant line downtime. The 124kW infrared system was first proven by on-site trials before its easy and compact installation in the roof of the Stenter entry enclosure.

Since installation, the new system has allowed an increase in line speed averaging around 6%, depending on how much the chemical coating is taken up by the textile and the construction of the textile itself. In addition, the carbon emitters have also demonstrated another very important benefit over alternative heating techniques, as their very fast response ensures that the fabric does not become overheated.

Click here to learn more about infrared heat for the textile industry.

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Infrared heat for classic cars

Did you know what infrared heat has to do with classic cars?

When restoring classic cars, not only bodywork and mechanical components must be renewed. The interior should shine too. Infrared emitters from Heraeus help to create custom-fit carpets using the original carpet shapes for classic cars. The infrared heat ensures that the rigid carpet blanks can be formed.

Custom Car Carpets sources original carpet moulds and provides customized carpets to fit exactly into restored classic cars. The carpet is bought as blanks and is extremely stiff and so needs softening before the moulding process to ensure optimum performance and finish. To investigate how this could best be done, the company asked Heraeus to carry out tests at their Neston Application Centre and, as a result, a fast response, medium wave infrared oven, consisting of three 34kW, modules with pyrometer control have been installed.

In operation, the carpet blanks are cut to size and then located in the oven. They are heated in 1 to 2 seconds to the required temperature, which can vary according to the type and pile density of the carpet, and on reaching the temperature, the modules are automatically switched off by the pyrometer. The softened carpet is then moulded before plastic protective sheet is welded to its base.

“The infrared system helps to ensure that moulding is carried out easily and efficiently,” is the verdict of the company. “The fact that the emitters are fast response also means that the process is very energy-efficient.”

Click here to learn more about infrared heat for the automotive industry.

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UV light facilitates environmental monitoring

Did you know that UV light helps to facilitate environmental monitoring?

Also in this summer we liked to be out in the fresh air when the weather was nice. However, since there are more pollutants in our environment, it is important that the upper limits are not exceeded so that there are no long-term effects on our health.

The quality of clean water and clean air is continuously monitored. For this, experts regularly carry out measurements at various points.

The quality of clean water and clean air is continuously monitored. For this, experts regularly carry out measurements at various points.

FiberLight® L3 is a unique and innovative light source module that can be easily integrated into portable spectroscopic instruments thanks to its small size and plug & play technology. It is used for environmental monitoring, but also in laboratory equipment, e.g. for sample cleaning.

For the first time, FiberLight® L3 combines state-of-the-art LED technology with a true broadband spectrum. This opens up completely new application fields and gives unexpected flexibility in analytical measurement. Qualitativ measurements (type of substances present) and quantitativ measurements (amount of a certain substance) are possible with only one instrument. The broadband spectrum is generated in a wavelength range from 250 to 490 nm using a single UV LED chip with special doping. This innovation avoids the disadvantages of earlier solutions with multi-LEDs. The above-average service life of more than 5,000 hours reduces maintenance and operating costs.

Click here to learn more about FiberLight® L3.

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UV disinfection for food packaging

Did you know that UV light helps you enjoy sausages even longer?

Wether with the family or friends, on summer days nearly everyone loves spending time with the dearest ones. Having Barbeque is a popular break in everyday life. You find homemade salads on the table and sausages sizzle on the grill. Everyone enjoys the good weather and the delicious food in a relaxed atmosphere. But why can you still eat the meat after storing it for a longer time in the fridge? One reason for this is the sterilization of the packaging, the food is shrink-wrapped in.

In the food industry ultraviolet light is often used for disinfection. This way it is possible to kill harmful germs within a few seconds. Bacteria, yeasts and fungi on the grill sausage packaging are rendered harmless.

UVC disinfection is not only energy-efficient, but also an environmentally-friendly process. Adding chemicals can be avoided and the risk that unhealthy by-products occur is minimized. This does not affect the taste and smell of the sausages.

Click here to learn more about UVC disinfection of food packaging materials and surfaces.

The UV systems are emitting cold UV light to ensure that heat-sensitive packaging materials such as sealing foils are not damaged during disinfection. Besides a wide variety of packaging materials, conveyor belts are treated the same way. These conveyor belts are used for the transport of various foods, including meat products.

The UVC sterilization process destroys the DNA of the microorganism. Consequently, germs have no chance to multiply any further. Their structure is destroyed and living cells are inactivated. Furthermore, they are unable to build up resistances to UV radiation. Would you like to know more about UV disinfection ? Follow the links to our website or contact us here .

YOTL Juli UV Cruise Ship

Do you know how UV light can beautify your holiday on cruise ships?

It’s the warmest time of the year, most people take a little break from work to recharge their batteries: The summer holidays are coming! Whether it's a trip to the sea with fantastic beaches, a relaxing holiday in the middle of nature or a cruise with wonderful views of different coasts. Of course, a cozy evening in a nice restaurant on board should not be missing. A well-equipped, clean and safe kitchen on board is necessary to serve a freshly prepared and delicious meal to the tourists.

For this reason, cruise ships are subject to particularly strict safety and fire protection regulations. These are used, for example, in the ship's restaurant, because cooking produces vapors that contain highly flammable fats. These are increasingly deposited in the kitchen hoods and there is a high risk of fire.

To avoid this, UV light is used in the kitchens of cruise ships. because UV systems in the kitchen hoods destroy and neutralize the molecules of grease and odors. As a result, the risk of fire will be reduced. A nice side effect - the hood body must be cleaned much less frequently. This considerably reduces the cleaning costs.

UV light also can neutralize odors that arise during cooking. Cruise tourists do not have to worry about being disturbed on deck by fumes from the restaurants. Nothing stands in the way of a relaxing experience on board!

Would you like to learn more about the reduction of odors and fats in kitchen exhaust air? Click here for more information.

UV light is used in many other places of large ships. For example, UV light is also used in the ballast water of large ships. Special UV lamps disinfect the water in the ballast water tank and they make the bacteria and pathogens inactive.

Are you interested in our special topic: How can UV light treat and disinfect water?

Click here to learn more about UV ballast water treatment.

Have you ever wondered how the beautiful wood decoration and furniture on cruise ships remain so glossy and scratch-resistant?

UV light cures the varnishes, that are on the wood and achieves these properties on the furniture. But UV light also provides a great surface for matt coatings.

Click here to learn more about drying and curing varnish on wood with UV.

Did you also know that our light sources can be used for emission monitoring of ship exhaust gases?

You can determine different gases, among others nitrogen oxides or Sulphur but also dust and soot particles with a special spectroscopy method. Special light sources such as FiberLight D2 , a compact UV Vis light source or NOx UV light sources are used.

Did you know, what Carbon Infrared Emitters have to do with your T-Shirts?

Did you know, what Carbon Infrared Emitters have to do with your T-Shirts?

Especially in the hot summer months, t-shirts are a must have! But the imprint is what makes them a genuine eye-catcher. Infrared emitters help to dry these imprints fast and energy efficient.

Lots of motives are applied as screen print inks on textile and need to be dried afterwards.

Calmatech BV is a globally-acknowledged manufacturer of flash cure dryers and tunnel dryers for the textiles industry, with over 20 years experience of drying and heating technology. The company strives to incorporate the latest technologies in infrared and electronics to improve the efficiency and effectiveness of its dryers. A recent development saw it replace halogen infrared lamps with medium wave carbon infrared emitters from Heraeus.

The medium wavelength is optimally suited for surface drying, as this wavelength closely matches the absorption characteristics of water. By contrast, the short wavelength of halogen lamps is more penetrative so that energy is lost as it penetrates the ink and the textile itself.

The new emitters are fitted precisely in the dryers to create an even heat distribution over the target textile surface. Calmatech BV was able du reduce the drying time from seven to eight seconds, down to two to three seconds, by using Heraeus carbon infrared emitters.

This is a great benefit for the customers, since they do not only get reduced drying time but also reduced energy costs. This is due to the fact that carbon infrared emitters have a very short response time. Different to halogen emitters which need to be switched on permanently, they are suitable for pulse operation, by being switched on only when required.

Extensive research has shown that a Carbon infrared emitter requires up to 30% less energy than a conventional short wave emitter to carry out the same drying process.

Click here to learn more about infrared emitters for drying printing inks or contact us if you would like to receive more information.


Do you know what Mother´s Day has to do with UV light?

Who is always there for you? Who does help with problems of any kind? Your mum! Because she is the best advisor in the entire world. Therefore, there is a day in the year when we would like to give something back to her: Mother's Day.

On this special day we would like to make her feel special, buy her flowers or invite her and the whole family into a nice restaurant. There, it can get unpleasant when guests and the whole neighbourhood smell like bad kitchen fumes.

Especially when cooking with a lot of fat and oil, unpleasant smells and grease deposits can appear in kitchen hoods. Only some of these deposits can be caught by the conventional grease filters in the kitchen hood. The rest accumulates in the hood and there is a high fire risk as well as severe odor nuisances. Here UV light can create remedy. Because treatment with high-energy UV radiation photolyzes, destroys and neutralizes the molecules of grease and odors. The surface of the kitchen hood is thus kept clean and unpleasant odours are a thing of the past. So Mother's Day can be enjoyed again in the restaurant. You can find out more about grease and odor control for food service on our UV application pages.

UV radiation also protects against fires in industrial kitchens

Especially in industrial kitchens, where fats are deposited in hoods and exhaust air ducts, a fire can quickly develop. One ignition spark can be enough to ignite the old fat and cause a fire. Are you interested in our special topic: How does UV light minimizes the fire risk in industrial kitchens?

UV light helps to give the quark for your cake a long shelf life

Do you know what UV light has to do with carrot-quark cake?

At Easter you can bake a lot of delicious things. Quark is used as an ingredient in many recipes. In order to keep the quark as long as possible in the fridge, curd cups or lid foils are irradiated with UV light before the filling process.

Only a few seconds of intense light are sufficient to render spoilage germs such as bacteria, yeast or fungi on sealing films and yoghurt pots harmless.

To effectively destroy also the UVC radiation-resistant mildew, the combination of UVC radiation after exposure to low-percentage hydrogen peroxide (1-3%) is recommended. You can find out more about this effective combined disinfection method on our UV application pages .

Perhaps you would like to try out the editorial staff's favorite recipe at Easter? We attached it for you - enjoy it!

Click here to download the carrot-banana-quark cake recipe.

UV curing of rim coatings for steel and aluminium beverage cans

Do you know what UV light has to do with St. Patrick's Day?

St. Patrick’s Day is an Irish holiday that falls on March 17th. This traditional Irish holiday celebrates Saint Patrick. He is credited with bringing Christianity to the country. Still today there are St. Patrick’s Day parades in many parts all over the world.

Now, what has UV light to do with that?

Food and drink remain an important part of the holiday. One Irish custom is known as “drowning the shamrock.” This is when a shamrock is placed in a cup that is then filled with Irish whiskey, cider, or beer. It’s then drank as part of a toast, with the shamrock either being consumed or tossed over the shoulder for good luck.

Many of the drinks are served in cans. Heraeus Noblelight was instrumental in pioneering the use of UV rim coating for steel and aluminum beverage cans in the early 1990's. UV processors are engineered to install under a coater vacuum conveyor to cure rim coating on aluminum beverage containers. A coat of varnish or lacquer makes cans move through processing smoothly without tipping and spilling during filling operations. This increases production time and quality of the filling process.

Benefits of UV Bottom Rim Coating at a glance:

  • For Steel: to protect the Can from corrosion after it leaves the Canmaker until it reaches the consumer.
  • For Aluminium: to improve Can mobility and production efficiency through the manufacturing and filling lines.

Click here to learn more about UV curing systems for bottom rim coating of beverage cans or contact us if you would like more information.

IR Heat for easy manufacturing

Did you know that Infrared heat helps to reduce the risks of RSI?

A temperature difference of a few degrees does not sound like much - but it can nevertheless lead to a huge reduction of workload in automotive manufacturing (RSI = repetitive strain injury).

Minimal heating of plastic parts greatly reduces the effort required for some installation work. This reduces the burden on the worker enormously. Infrared emitters from Heraeus Noblelight help with the process.

Rubber fuel pipes are being installed at Jaguar Land Rover in England directly on the production line in the Jaguar XJ. However, because of the hardness of the rubber and the tight fit, operatives were having trouble in securing the pipes. By heating the material, the plastic softens and facilitates the assembly work.

To help facilitate the manual fitting, an infrared system consisting of a floor-standing aluminum framework and a controllable heating zone with two heating modules, was installed on the Jaguar production line at the hose-fitting location.

The heater zone is provided with a sliding drawer and, in operation, a hose to be heated is placed on the table in the drawer between two locating pins. When the drawer is shut manually, the heating cycle commences and the penetrative short wave infra-red radiation heats and softens 80-100mm of the hose length. A subsequent holding period helps to maintain the heat on the hose and ensure that the rubber is soft enough for fitting.

Click here to learn more about IR heat for the automotive industry or contact us if you would like more information.

Composite Materials for skis and snowboards

Did you know that skis and snowboards benefit from Infrared heat?

Not only should skis and snowboards look appealing, they also need to be built to withstand the rigors of snow and ice. Almost all popular skis and snowboards contain composite materials, which are manufactured by Isosport in Austria.

For the modern, high-quality composite fabrics rovings and fabrics made of glass and carbon fiber are impregnated with high-quality epoxy resins. Afterwards it is cured in a continuous process with infrared emitters from Heraeus.

So far, metal-tube emitters were used for this process, but in 2018 they were replaced by medium wave infrared emitters from Heraeus. The more modern emitters have a gold reflector, which directs the heat directly to the product, which significantly increases the efficiency.

Christian Puschitz from the purchasing department at Isosport Verbundbauteile GmbH is enthusiastic: "The new emitters have improved energy efficiency by up to 30%."

Click here to learn more about IR heat for composites or contact us for further information.