CHICAGO Auxiliary equipment maker Kalwar Group of Halle, Germany, exhibited its innovative new Calvasol series of corona treatment machinery at NPE2009 in Chicago, in conjunction with its North American partner, Lectro Engineering Co. of St. Louis.
To increase efficiency and profitability, the Calvasol unit combines processes typically done independently of one another, the companies said.
Perhaps most significant is the ability to add surface treatments like static and fog inhibitors or ultraviolet primers to film during the corona treatment process. That eliminates the need for compound additives that require humidity to migrate throughout the extruded film over time, according to the companies.
In addition to eliminating climate from the equation, the Calvasol unit provides a lifetime corona film treatment to an industry accustomed to a shelf life sometimes as short as 30 days, they said.
The integration can, depending on the particular process, increase line speed as much as 40 percent, said Markus Kalwar, managing director of family-owned Kalwar Group, in a June 21 interview at NPE.
Kalwar Group has more than 130 surface-treatment patents, he said. The company is split between Kalwar CIV Innoserv GmbH, its research and development arm; and Kalwar CFT Fusiontechnik GmbH, its machinery business.
According to Kalwar Group, a nebulizer installation is used to generate an aerosol, which is applied to the surface of the substrate with the plasma discharge.
The machine also has an integrated power supply, and features an Ethernet connection that allows service technicians to troubleshoot and maintain machines via the Internet.
Kalwar and Lectro have worked together for decades, but forged a formal partnership in 2007, according to Greg Wood, Lectro's vice president of sales and a co-owner of the company.
Lectro's core business was in surface treating of finished molded parts, but the firm's European sales have spiked about $2 million during the past 18 months as a result of the Kalwar partnership, Wood said.