An inkless relief feature that can consist of shapes,symbols,numbers and/or letters.
Blind embossing is a tactile feature that can be applied onto paper and/ or polymer substrates by pressure or by heating which will deform the substrate.
The result is a tactile feature in paper and/or polymer that can be checked by:
Tangible elevations and recesses in the substrate.
Above elevations and recesses can be made visible by using oblique light.