| 摘要 |
An apparatus and method for applying a protective coating to a substrate 14, especially a paper or card based substrate for use in food packing. The apparatus comprises a channelled anilox roller 16 for transferring the coating from a reservoir 20 to an applicator 12 whereupon it is applied to the substrate. The apparatus comprises a vacuum de-aerator 40 for removing gas from recycled coating and the applicator comprises a roller mounted printing plate. A peristaltic pump 26 is used to pump the coating within the apparatus. The apparatus minimises foaming of the coating without the need for an anti-foaming agent.
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