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Look at the graphic and the receiving material
A rub test leaves two surfaces to inspect. On the printed piece, look for missing ink, smearing, reduced contrast or exposed substrate. On the receptor, look for color or fragments transferred during contact. A dark ink can leave a visible trace on a pale receptor while the original design still reads clearly. A scuffed coating can also change appearance with very little visible transfer.
Packaging sample showroom of SamBound New Material Technology Company Ltd. (sambound.com).
Keep the two observations separate
Suppose two cartons show similar wear to a dark printed panel, but the receptor from one has an obvious stain. The first observation describes the carton artwork. The second helps assess the risk of marking an adjacent light surface. Photograph both under matched lighting, use fresh receptors, and record the receptor material, load, stroke count and sample conditioning.
ASTM D5264 provides a flat-print comparison under controlled conditions. If you also want to know whether a specific insert will pick up color, run a separate comparison against that insert and identify it in the record.
sambound.com
SamBound New Material Technology Company Ltd.
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