Model 419

Description

Parallel strips of wet film are applied to a substrate using a special paint applicator frame made of stainless steel and featuring slots of various heights.

The sag tendency is determined in a vertical flow test, the levelling tendency is ascertained when the specimen is horizontal. The specimen panel is examined visually after the coating has hardened.

Design and function

The four drawing blades of the film applicator frame feature a total of 24 slots. As in the case of Model 419-ASTM, the slot width and the distance between the slots is predetermined. The slot heights vary between 75 μm and 1300 μm.

Sag test according to DIN 55 677

The strips of wet film are applied, preferably to a standard specimen panel made of steel. Subsequent to application, the specimen panel is positioned vertically (film strips running across the panel with the thinnest strip uppermost) and the coating allowed to dry. A suitable thickness gauge is used to determine the thickness of the thickest layer where no change is evident as a result of sagging. This layer is regarded as the flow index for the sag properties.

Scope of delivery

• Sag Tester Model 419-DIN
• Case