profine GmbH

About us*

profine GmbH – International Profile Group – is a worldwide leading manufacturer of PVC-U profiles for windows and doors and a renowned provider of shutter systems and PVC sheets. With its KBE, KÖMMERLING, and TROCAL brands, the Group supplies its products to more than 100 countries and has an excellent international standing at 29 sites in 23 countries. profine Group manufactures at production facilities in Germany, France, Italy, Spain, Russia, India, the UK, Ukraine, the USA and China, with its head office in Troisdorf, North Rhine-Westphalia, and a payroll of over 3,000.

High quality approach at all levels: excellent weldability of our systems

We set standards worldwide with our premium systems. Our high quality approach applies at all levels and of course also includes the excellent weldability of our systems.

For decades we have been accompanying the welding process, which is so decisive to the success story of the PVC-U window, with great commitment, and we are in close contact with all well-known industry partners. profine is an active member of the “profile & machine” working group of the GKFP quality association.

profine systems are also optimally prepared for the new welding technologies. Many of our customers have been using corresponding welding systems from different machine manufacturers for a long time in series production and enjoy their advantages.

The central specification for the evaluation of the welded corners remains the individually determined corner break value provided by us. Due to our high quality standards, this requirement applies regardless of the welding technology used. This has the advantage that the window user can always rely on tried and tested specifications, regardless of the welding machine used.

As a leading system provider we also actively support the current research project with the SKZ with great commitment. We are thus creating an even better scientific basis for evaluating the dynamic long-term behavior of welded corner connections. Last but not least, this also strengthens Germany as a country for innovation.

Trend towards “welding without plastination”

In order to accompany the trend towards “welding without plastination” even more intensively, and to make further use of the new possibilities it offers, and to support our partners in a more targeted manner, profine will soon have a corresponding 4-head system based on the latest state of development in our Window Innovations Center.

We are very pleased to be able to work with such a system and thank all our partners.

--- *The company itself is responsible for the correctness of the contents.

Further information

Contact person

Dirk Holzki – Head of Sales for Accessories and Traded Goods, Germany /
Head of Corporate Technical Customer Service


+49 (0) 2241 - 9953-3131