These are usually coated papers that need to be such that they can be printed using offset (and flexographic) printing techniques. Label papers can be coated, foiled and embossed and may also be water- and chemical resistant so that labels do not become detached when the items they are attached to are washed (e.g. in wash down areas of production). Depending on technique and medium employed, there are machine-coated papers, chromolux board papers and high gloss cast coated papers.
These papers need to have excellent properties for printing but, more especially, must conform to the needs of the labelling process. In this case, they may need to be water-resistant, peelable, tearproof, fracture-resistant, oil/chemical resistant, embossable and so on.