
thumb|upright=1.35|Corrugated fiberboard made from paperboard
thumb|upright=1.35|Corrugated fiberboard made from paperboard
Paperboard is a thick paper-based material. According to ISO standards, paperboard is a paper with a grammage above 250 g/m2, but there are exceptions. Paperboard can be single- or multi-ply. The related term box board dates at least to the 1790s. Terminology and classifications of paperboard are not always uniform.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).