Can Coating

Wash coat concentration measurement

In can coating technologies a wash coat is used to provide high chemical resistance, hardness, flexibility and gloss to can caps and closures.

The wash coat is prepared by mixing acrylic substance with water. It is then applied to the outside of the cans in order to protect them from oxidation before the labels are applied.

In-line Vaisala Polaris^TM process refractometer monitors the wash coat concentration to ensure a high quality coat, good anti-corrosion properties and alkali-resistance, good adhesion properties for labels, and better storage stability. The refractometer’s output signal is used for automatic control of the dilution operation.

Learn the details of the can coating process from the application note.

Download the application note in PDF by filling the form.

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