FIELD: formation of sheet metal materials.
SUBSTANCE: sheet material (100) has a ridge and recess pattern formed on both of its major surfaces in a first portion (101) and a brand name (103) formed in a second portion at a break (102) of the ridge and recess pattern. At least the branding portion provides a visual and/or machine-readable indication of the alignment of the tools used to form the sheet material.
EFFECT: alignment mismatch between tools can be quickly and/or more easily identified.
19 cl, 13 dwg
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