Leading South American fittings manufacturer relies on Wittmann Battenfeld

Krona Indústria - its rapid rise to South American market leadership

(PresseBox) (Kottingbrunn, ) Krona Indústria, a Wittmann Battenfeld customer of long standing based in Joinville, Brazil, celebrates its 14th anniversary this year. Krona ranks among the leading suppliers of pipes and fittings in the South American market. Since its establishment in 1994, Krona has relied on cooperation with the Austrian injection molding machine manufacturer Wittmann Battenfeld.

Krona's success story began in 1994. It started with two extruders producing PVC pipes with an annual capacity of roughly 150 tons. Three years later, the company extended its production capacity by adding three injection molding machines to manufacture PVC fittings. In the following years, Krona experienced annual growth rates between 25 and 33%.

With targeted investments and uncompromisingly high quality standards, the company quickly achieved a position of market leadership. Today, Krona ranks among the most important plastics processors in South America.

On a 33,000 m² production floor, about 350 different PVC products are extruded, injection-molded, joined, assembled and packed. The areas of application are diversified and range from fresh water and waste water transport pipes to irrigation systems. Krona also offers a product line for private sanitary installations with more than 60 different parts. The company's 350 employees process over 20,000 tons of PVC every year.

To keep pace with the company's rapid expansion, Krona's production facilities have been extended several times over the years. After three major construction phases in 1996, 2001 and 2005, another new hall with over 14.000 m² production floor space was opened in May of this year. This production hall in ultra-modern design stands out by its unique logistics system, with streamlined production processes from material feeding to the integrated truck loading facility, involving minimized transport distances. Not only the production of pipes and fittings, but also material deliveries and the removal of finished parts are guaranteed around the clock on seven days a week.

Social Responsibility as a success factor

Social responsibility towards its staff and the local population is a major concern for the company's management. So Krona continuously invests in further training of its employees. Moreover, local schools, social service institutions, medical aid projects and sports events are supported on a regular basis.

Krona relies on Wittmann Battenfeld

In its injection molding department, Krona has currently 75 machines, with clamping forces ranging from 130 to 500 tons. Most of these machines come from Wittmann Battenfeld. In conjunction with the opening of the new production hall, 12 additional machines were delivered to Krona.

"In Wittmann Battenfeld, we have found a reliable partner to meet our stringent requirements to 100%", José Armecides Gonçalves, proprietor of Krona, notes with satisfaction. "Wittmann Battenfeld is more than just a supplier to us; they are fully integrated partners. The all-important points are this supplier's cooperation and counseling prior to delivery of the equipment, continuous optimization of production processes, and servicing of machinery in operation. The 'Krona' equipment package for injection molding machines which has been specially developed for our needs and for PVC processing, is a good example of this excellent cooperation which ensures maximum uptime for us. We appreciate our close partnership with the local service engineer as well as the South American headquarters of Wittmann Battenfeld in São Paulo and, of course, our direct cooperation with the development department and production plant in Austria."

HM series with PVC equipment package

With its HM series, Wittmann Battenfeld provides a high-performance basis to meet the demanding requirements of hard PVC processing. The extremely high precision of the machines' hydraulic system and clamping units with generous space to accommodate molds are ideal prerequisites for the production of fittings. The symmetrically arranged clamping cylinders with fast-stroke cylinders ensure symmetrical force transmission, fast and even clamping force build-up, while providing a highly sensitive mold safety system to protect the mold. The fast-stroke cylinders with differential circuits allow high opening and closing speeds, thus increasing productivity in manufacturing. Precise platen parallelism is ensured by the generously dimensioned linear guides of the moving platen.

The machines delivered to Krona come with an equipment package specially designed for the conditions of PVC processing. One special feature of this package is the screw-and-barrel unit with external cooling. It ensures that the sensitive PVC material is not damaged through overheating. The screws offer a fixed L/D ratio of 22 which delivers maximum plasticizing performance with optimal melt quality. They come with a special PVC melt geometry developed by Wittmann Battenfeld, which functions without a non-return valve and with a compression rate adapted to the conditions of PVC processing. The stringent demands on plasticizing this material are met with a specially developed material feeding drive concept which provides the necessary torque.

The plasticizing unit from Wittmann Battenfeld is also designed for easy maintenance as required. The machine is equipped with a separate service stroke, which is activated by the control system, for easy dismantling of the screw and barrel. The ceramic heater bands and sensors can be plugged in separately in each heating zone. All parts of the machine are highly corrosion-resistant, to ensure trouble-free processing of the aggressive material PVC for many years.

Wittmann Battenfeld in South America

Wittmann Battenfeld has already taken care of its customers and partners in South America for over 40 years. In Brazil, Wittmann Battenfeld has maintained a service and spare parts center for many years, which supports customers throughout South America and thus provides the basis for quick and efficient service. More than 6,500 machines installed speak for themselves. The center near São Paulo is assisted by six local agencies in the most import regions of the country.

In the company's Osasco office, São Paulo, a total of thirteen employees take care of Wittmann Battenfeld's extensive service portfolio. In addition to a service hotline and spare parts and repair service, Wittmann Battenfeld also offers a technical lab to carry out pilot production, training seminars and test runs for customers.

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