Traffolyte, sometimes spelled Traffolite, is a generic name for multi-layered phenolic plastic sheets suitable for engraving.
Each layer has a different colour so engraved letters or shapes are a different colour from the unengraved portions. Thus its use is used for name tags, labels and general signs.
Traditionally its use has been in the oil & gas industry due to its resitance to high temperatures but the material lends itself to smaller labels, valve tags and signage including name plates.