R&D tailored to the requirements of our customers
Development of the E3 beaters was matched especially to the requirements of the powder coating industries. The demands of our customers were clear: the new beaters must minimise the undesired fines portion and ensure an increased throughput as well as a reduction of the batch times. Over and above this, the new solution has to be easy to clean and suitable for retrofitting in existing systems.
As a partner, Hosokawa Alpine chose a long-standing customer who already has ACM classifier mills in operation. Karl Bubenhofer AG is a Swiss family-owned business which can look back on more than 110 years of experience in the production of paints. Products for the fields of building paints, plaster, industrial paints and powder coatings are researched and developed at the headquarters in Gossau. For the grinding of powder coating chips, Karl Bubenhofer AG currently has a total of twelve Hosokawa Alpine ACM classifier mills in operation at four powder coating plants, more are already in the planning stage and will follow. The successful cooperation exists since 1987.
An old system back to 1990 which was due to be replaced provided the motivation for application of the new beaters. "Preliminary tests convinced us that the mill could be re-activated by retrofitting it with the new E3 beaters", explains Thomas Gächter, Arnegg plant manager at Karl Bubenhofer AG. In order to make the new solution as attractive as possible for all customers, there was constant coordination between the R&D team and the customer.
Karl Bubenhofer AG is also convinced with the result and is currently optimising all the existing systems by retrofitting the E3 beaters, as Thomas Gächter explains: "The tests with the E3 beaters and the excellent cooperation with Hosokawa Alpine have really paid off. With the completely renovated system and as a result of the E3 beaters, we are able to achieve a hitherto unattained performance of up to 1200 kilos throughput per hour, and this significantly exceeds our expectations. At the same time, the feed product is less prone to coating formation, which makes cleaning a lot easier". Two new systems equipped with the new beater unit were ordered straight away in order to ensure a future-oriented production.