Pulpboard

A sturdy paperboard grade whose plies are predominantly wood pulp, though recycled waste paper sometimes fills the middle layers. It forms the folding cartons, trays, and sleeves that carry countless food products, chosen for rigidity, smooth printability, and low cost rather than for barrier performance. Where it touches food directly, coatings of wax, plastic, or clay are applied to resist grease and moisture, and food-grade specifications restrict inks and contaminants. Recycling streams welcome it, provided food residues are managed. Moisture-resistant coatings extend its use to chilled and frozen food packaging.