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Paperboard

is a thick paper based material. While there is no rigid differentiation between paper and paperboard, paperboard is generally thicker (usually over 0.25 mm/0.010 in or 10 points) than paper. According to ISO standards, paperboard is a paper with a basis weight (grammage) above 224 g/m2, but there are exceptions.[1] Paperboard can be single or multi-ply. Paperboard can be easily cut and formed, is lightweight, and because it is strong, is used in packaging. Another end-use would be graphic printing, such as book and magazine covers or postcards. Sometimes it is referred to as cardboard, which is a generic, lay term used to refer to any heavy paper pulp based board.

Terminology and classification

Terminology and classifications of paperboard are not always uniform. Differences occur depending on specific industry, locale, and personal choice. In general, the following are often used:[3][4]

  • Boxboard or cartonboard – paperboard for folding cartons and rigid set-up boxes
  • Containerboard – a type of paperboard manufactured for the production of corrugated fiberboard
    • Corrugated medium – the inner fluted portion of corrugated fiberboard
    • Linerboard – a strong stiff board for one or both sides of corrugated boxes. It is the flat covering over the corrugating medium.
  • Other
    • Binder's board – a paperboard used in bookbinding for making hardcovers.

 

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