Cartonboard

Cartonboard is a generic term for paperboard used to manufacture folding cartons and similar packaging. It is a solid, printable material that comes in light- to medium-weight grades and is designed to be scored and folded without cracking. Cartonboard can be made from virgin fiber, recycled fiber, or a combination, and may be uncoated or coated on one or both sides to improve printing quality, stiffness, and barrier properties. Common variants include white cartonboard, which provides a bright surface for high-quality graphics, and coated boards that accept gloss or matte finishes and sometimes barrier coatings.

Cartonboard grades are typically distinguished by fiber content and surface treatment. Uncoated recycled cartonboard has good rigidity and printability at lower cost, while coated cartonboard offers a smoother surface and higher whiteness for premium packaging. Coatings may be simple, such as a surface coat, or more complex, involving film laminates to improve moisture resistance.

Applications include folding cartons for food, cosmetics, pharmaceuticals, and consumer electronics, as well as book covers and other retail packaging. The material is chosen for printability, dimensional stability, and the ability to run efficiently on converting equipment, such as flexo and offset presses, as well as die-cutting and embossing.

Environmental considerations include recyclability and the potential for post-consumer content. Coatings and laminates can affect recyclability and compostability, so manufacturers often balance protection needs with sustainability goals and seek certifications like FSC or PEFC where appropriate.