Markets and Events

IST Metz – Interview with Christian Metz: “UV light is and will remain indispensable”

Christian Metz vom IST Metz (Source: IST Metz)

GERMANY •In this interview, Christian Metz, CEO of IST Metz, explains the relevance of the printing industry for the company, the co-existence of UV lamps, UV-LED and alternative drying methods, a big in-house trade fair in May and the strategic orientation of this group of companies. The German supplier of UV systems is headquartered in Nürtingen.

Christian Metz, could you please briefly introduce IST Metz?

My grandfather established the company in 1977 under the name “Impuls-Strahlungs-Trocknung – IST” which, since then, has grown into a group of 13 companies all over the world. We have 500 members of staff and our most recent total group turnover amounted to 73 million Euro.

Where do you see growth potential?

Metz: We generate approximately 85 percent of our sales abroad, more than half of these in countries outside Europe. Now the aim is further diversification of the target markets. In addition to being used for analogue label and packaging printing, our systems are in demand in inkjet printing. Furthermore, we supply UV technology for drinking water disinfection, coating and bonding technology.

What`s the share of the traditional printing company applications in your total sales?

Metz: About half of them. I think that we should have a close look despite all consolidation. It`s not clear whether high gloss prospectuses have a big future. However, I see long-term growth potential in packaging and commercial printing.

The same applies to the UV world with the crucial question: UV lamp or UV-LED?

Metz: This discussion is more objective again. Lamps and LEDs have specific advantages and disadvantages. We help our customers to analyse the total cost of ownership (TCO) and to select the right technology considering the concrete requirements in specific applications. Broadly speaking, the UV lamp provides much power for little money, and there is a broadband spectrum. The LED, on the other hand, can be switched more quickly, can be dimmed, has a long service life and the well-known energy efficiency.

To which extent have the light sources become exchangeable?

Metz: At drupa, we presented the UV Hot Swap System. On the stage, we switched from lamp to LED live. The peripheral equipment, i.e., ballast, cooling and control technology, remain the same. That`s not to say that the printing companies now swap the light sources continuously. We rather wish to create a secure future for investments. Anyone who purchases systems with UV lamps now can switch whenever necessity arises. For instance, when dimmable, fast switchable light is required for orders or where the legislator urges for the use of LED technology.

Is the drying technology needed for digital printing different from that of analogue printing?

Metz: We see that the manufacturers of inkjet systems show openness towards UV-LEDs, but they also use infrared systems for drying. The infrared and thermal technology has somehow got out of sight – but it`s by no means a technology that has run its course. We rather see something of a renaissance. A large variety of drying technologies are needed in order to cover the processes in all industries. Our new slogan “Energy in Light” says it all: It`s not the wavelength that counts. It`s the right portion of energy at the right place and time.

Do digitisation and the trend towards 3D processing take effect in the UV sector?

Metz: Our ray tracing technology enables to calculate and optimize the efficiency of a unit, the homogeneity of radiation and the distance characteristics. Using ray tracing and thermosimulation, we can considerably shorten development times. With our UV-LED systems, digitization is standard. The LEDs on an array can be individually controlled, depending on where light is needed on the substrate. Of course, we also focus on 3D printing methods in which UV curing is important.

Last question: What do you see when you look ahead to the year 2030?

Metz: By then, things will have calmed down in the printing sector. There will be a division of work between offset, flexographic and other analogue methods on the one hand and digital printing methods on the other hand. Being well informed, customers will choose the drying and curing technology that is suited for them. We will have a strong basis in printing machinery manufacturing. However, our UV systems can also be used in two to three dozen applications in other industries. UV light is indispensable in many industrial processes. It will most certainly not go out.

IST Metz organises an Open House event calles “UV Days” from 15 to 18 May 2017 in Nürtingen, Germany with about 40 exbitors.
(More informations to this event please finde here:

Rosina Obermayer

Your Opinion