Centrifugal Film Applicator Model 334 Smart

Description

The centrifugal paint-film applicator, Model 334 Smart is a bench mounted instrument, consisting of a sheet metal housing, touchpanel, specimen holder with collecting trough and protective hood. The speed and the application time are continuously variable between (100 - 2,000)min-1 and (0 - 999)s. The selected speed is shown on the touchpanel. At the end of the preset centrifugation time the applicator switches off automatically and the specimen can be taken out of the holder.

Purpose and application

The Model 334 Smart centrifugal paint-film applicator is used for producing uniform coats on test panels (edge length: 80 to 200 mm) for testing purposes. The advantages of this application method are the affordability (time savings) and its outstanding accuracy and reproducibility. This device is very helpful when extremely thin coatings require high coating thickness constancy.

Application Method

The specimen panel to be coated is centred and positioned with 4 locating screws. With fragile specimens, e.g. of thin glass, it is advisable to use the glass plate attachment, which is available as an accessory. This is also generally suitable for specimen thicknesses between 1 mm and 3 mm. Thanks to the fixed centring feature which is set to the specimen format it is particularly time-saving when applying series coatings. An adequate quantity of coating material (5 - 10 g) is poured onto the centre of the specimen, which is then made to rotate at a preset speed, and for a selected period of time. Optimum application conditions depend on the viscosity, or more accurately on the flow properties, density and solid content of the coating material. Approximate values are shown in the chart in the technical description. The centrifugal force acting on the coating material causes this to be spread evenly across the specimen panel. Surplus coating material is thrown off the edge and collected in the surrounding trough. The coating applied in this way does not vary with distance from the centre of rotation, i.e. it is even over the entire area. Only in the case of thixotrope paints is there a possibility that the film thickness will vary, tapering to greater thickness towards the middle.

Scope of delivery

• Centrifugal Film Applicator, Model 334 Smart
• Connecting cable
• Operating instruction