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Thursday, 19 September 2019
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Raw materials & technologies

New standard evaluates inherent dry fall characteristics of paints

Monday, 19 August 2013

Coatings such as paint show inherent dry fall characteristics. A new ASTM International standard was developed to substantiate manufacturers’ claims.

Paints have inherent dry fall properties 

Source: Evgeniy Gorbunov / Fotolia

Paints have inherent dry fall properties 

Source: Evgeniy Gorbunov / Fotolia

ASTM D7868, Practice for Determining the Dry Fall (Fog) Properties of Protective Coatings, was developed by Subcommittee D01.46 on Industrial Protective Coatings, part of ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications.

Dry fall coatings are produced and sold throughout the world

According to Bill Corbett, vice president, KTA-Tator Inc., dry fall coatings have been available for decades and are produced and sold by coating manufacturers throughout the world. Dry fall coatings are formulated so that overspray particles dry as they move through the air before landing on horizontal surfaces. Particles can then be brushed off, vacuumed or washed from surfaces with no damage.

Investigation of automotive coatings in sunlight

The new standard was developed to qualitatively evaluate the dry fall properties of coatings prior to use on painting projects in which overspray cannot be tolerated. In addition, the new practice will be used to evaluate whether coatings demonstrate the same dry fall properties when the fallout collects on surfaces having an elevated temperature, such as cars parked in sunlight.

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