Canadian Finishing and Coatings Manufacturing

April 14, 2021

KOTEFASTOxford Advanced Surfaces, (OAS), in the surface preparation of plastic and composite components for painting and lacquering market, has developed a new treatment called KOTEFAST, it says reduces surface preparation time by 90 percent  compared to the existing approach of sanding. It is available in a water-based formulation, avoiding the need to use solvents.

KOTEFAST was tested on a truck panel and the treatment was recorded at less than 15 minutes. An identical panel took three hours to prepare using the usual method of manual sanding, indicating a time saving of more than 90 percent, the company says.

KOTEFAST also delivered a significant improvement in quality, enabled by the consistency of its straightforward spray application process, OAS says. The adhesion of the paint or coating to the substrate is improved as the KOTEFAST chemically bonds to both using the company’s proprietary “Onto” technology.

Application by spray allows even difficult areas, such as internal corners, difficult angles and blind voids to be easily prepared, leading to improved quality finish compared to sanding including on complex parts.

As well as being available in a water-based formulation, KOTEFAST avoids environmental challenges which arise with sanding dust.

“Having a water-based treatment that reduces surface preparation time by 90 percent could be a game changer,” says Dr. Jon-Paul Griffiths, Chief Technology Officer, OAS. “At a stroke, we have improved the efficiency and productivity in the preparation of plastic and composite parts for painting and lacquering. KOTEFAST has been tested rigorously and is already being used by two OEMs, and we are now working closely with other OEMs and other customers to plot a course for its full integration.”

www.oxfordsurfaces.com

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CFCM slingpsychrometer 400Paul N. Gardner USA, global distributors, producers, and designers of quality physical and inspection instruments for the paint, coatings, and related industries, has introduced a new offering: The compact, portable Sling Psychrometer.

As an easy way to measure relative humidity levels quickly, this uniquely compact Bacharach Sling Psychrometer accurately determines per cent relative humidity without the necessity of consulting complex tables. There is no need to wet the wick each time a reading is taken, and it contains a slide rule calculator which correlates wet and dry bulb thermometer indications for direct reading of relative humidity. When not in use, the thermometer case telescopes into the handle for protection.

The Sling Psychrometer consists of two thermometers that are turned by vigorously swinging the handle and exposing the thermometers to rapid air movement. These two thermometers are called dry bulb and wet bulb. The bulb of one thermometer is placed in direct contact with the room air to measure dry-bulb air temperature. The bulb of the other thermometer is covered with a silk or muslin sleeve that is kept moist to record the wet bulb temperature. Evaporation cools the wet bulb more than the dry bulb, and the humidity is obtained as a function of change in temperature. The atmospheric humidity is determined by calculations, steam tables, or using a psychrometric chart. Gardco.com  

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