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Carton Basics > Paperboard
Paperboard
There are two basic types of paperboard used to produce folding
cartons: Virgin Fiber and Recycled Fiber or Combination.
Virgin Fiber Paperboard Grades
SBS Paperboard (Solid Bleached
Sulfate)
Bleached paperboard or solid bleached sulfate (SBS) is a premium
paperboard grade that is produced from a furnish containing
at least 80% virgin-bleached wood pulp. Most bleached paperboard
is coated with a thin layer of kaolin clay to improve its
printing surface and may be also coated with polyethylene
(PE) resin for wet strength food packaging.
Coated Unbleached Kraft Paperboard (CUK)
Clay natural kraft (CNK®) made by MeadWestvaco Corporation or solid unbleached sulfate (SUS®) made by Graphic Packaging International, Inc. is a superior strength paperboard grade that is produced from a furnish containing at least 80% virgin unbleached, natural wood pulp. Most unbleached or natural kraft paperboard is coated with a thin layer of kaolin clay to improve its printing surface and may be also coated with polyethylene (PE) resin for wet strength food packaging.
Recycled Fiber or Combination Paperboard
Grades
Uncoated Paperboard
Uncoated recycled paperboard, a multiply material,
is produced from 100% recovered paper -collected from paper
manufacturing and converting plants and post consumer sources-
and represents the single largest market for recovered paper
in the United States. Some uncoated paperboard is produced
with a top ply of white recovered fiber or vat dyed for color.
| Basic
Grades of Uncoated Recycled Paperboard |
| BC |
Bending Chip |
| TBC |
Tan Bending
Chip |
| DKL |
Double Kraft Lined |
| WLBC |
White Lined
Bending Chip |
Coated Paperboard
Coated recycled paperboard, a multiply material, is
produced from 100% recovered paperboard just as uncoated paperboard;
however, typically coated with a thin layer of kaolin clay
over a top ply of white recovered fiber to improve its printing
surface.
| Basic
Grades of Coated Recycled Paperboard |
| CCNB |
Clay Coated News Back |
| CCKB |
Clay Coated
Kraft Back |
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