Pinholes and Missing Spots in Solid Foil Areas
Pinholes and missing spots are common when stamping large solid foil areas on paper boxes. A small logo may look perfect, while a wide metallic block can still look uneven. ## Why Solid Areas Are Harder Large areas require even contact across the whole design. If the paper surface is rough, dusty or uneven, the foil may miss small points. If the machine setting is not balanced, one area may transfer better than another. ## Check the Paper Surface Rough paper, textured paper and coated paper can all show different coverage. If the missing spots follow the paper texture, the substrate is li…