PE, PP, PEX are polymers that cause causes when printing on.
Pipe manufacturers in the gas and water industry often require surface treatment to ensure that their markings stay on their product when ink abrasion occurs due to handling in installation.
Materials like LSZH widely used in the fibre optic industry contain additives that cause a high level of surface contamination.
That along with minimal surface roughness and inherent low surface energy leads to a surface that cause poor ink adhesion.
Plasma Surface treatment improves ink adhesion by cleaning, etching and functionalising the material.