Photonics based solutions from ultraviolet to infrared

News of the Month - Case Stories

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.

Skier

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.

Would you like more information? Contact us.

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.

Would you like more information? Contact us.

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.

Would you like more information? Contact us.

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.

Would you like more information? Contact us.

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.

UV_Moth

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.

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