Paperboard
From Wikipedia, the free encyclopedia
Paperboard are paper materials with high thickness, normally over 0.010 inches (0.25 mm) or basis weight (grammage) above 150 g/cm². It might be built up of one or several plies and is often used in packaging materials. Paperboards are classified into cartonboard, containerboard and speciality boards. See also Cardboard which is a generic, non-specific, lay term used to refer to any heavy paper pulp based board.
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[edit] Properties
Thickness, bulk and caliper are significant aspects to paperboard manufacture, as the end product must be able to withstand the bending forces of packaging, load carrying, shipping etc., while still maintaining their shape. Consequently, these paperboard products are sometimes composed of two or more plies to provide the required stiffness.
Within the industry, paperboard is referred to by weight (grams per square meter, pounds per 1000 square feet) or by thickness (mm or thousandths of an inch, or 'points' - i.e. 0.009" thick paperboard is also known as 9-point) or by name: foodboard, chipboard, solid bleached sulfate, clay coated, corrugating medium, boxboard etc.
Today paperboard packaging in general, and especially products from certified sustainable sources, are receiving new attention, as manufacturers dealing with environmental, health, and regulatory issues look to renewable resources to meet increasing demand. It is now mandatory in many countries for paper-based packaging to be manufactured wholly or partially composed of recycled material.
[edit] Types
- Corrugating medium and linerboard are used in the construction of corrugated fiberboard.
- Liquid packaging board
- Containerboard
- Card stock
- Folding cartons
- Set-up boxes
- Carded packaging
- Composition board
- Posterboard
- Blister pack
- Foamcore
- Gypsum board
- Packaging and labelling
- Skin pack
[edit] Industry classification
Based on the production process and the source of the pulp, different types of paperboard are produced. The common industry abbreviations are:
CCN (Clay Coated News)
CKB (Coated Kraft Back)
CNB (Coated News Back)
CWTK (Coated White Top Kraft)
FBB (Folding Boxboard)
SBB (Solid Bleached Board)
SBS (Solid Bleached Sulphate)
SUB (Solid Unbleached Board)
SUS (Solid Unbleached Sulphate)
WLC (White Lined Chipboard)
[edit] Grades
The DIN Standard 19303 "Paperboard - Terms and grades" (Publication date : 2005-09) defines different grades of paperboard based on the surface treatment (first letter), the main furnish (second letter) and the colour (non-D grade) or bulk (D grade only) (numbering).
First letter (surface treatment):
A = cast-coated
G = pigment coated
U = uncoated
Second letter (main furnish):
Z = bleached virgin chemical pulp
C = virgin mechanical pulp
N = unbleached virgin chemical pulp
T = recycled/secondary fibre with white, cream or brown reverse
D = recycled/secondary fibre with grey back
Number
(all except D grades):
1 = white reverse side
2 = cream reverse side
3 = brown reverse side
(D grades only):
1 = bulk >= 1.45 cm³/g
2 = bulk < 1.45 cm³/g, > 1.3 cm³/g
3 = bulk <= 1.3 cm³/g
Example: GC1 would be a "pigment coated", "virgin mechanical pulp" board with a "white reverse side". Often the used paperboard type would be FBB, which was coated on both sides.
[edit] History
Will Keith Kellogg first used paperboard folding cartons to hold flaked corn cereal[citation needed], and later when he began marketing it to the general public, a heat-sealed waxed bag of Waxtite was wrapped around the outside of the box and printed with their brand name. This marked the origin of the cereal box, though in modern times the sealed bag is plastic and is kept inside the box rather than outside.
[edit] See also
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Look up paperboard in Wiktionary, the free dictionary. |
[edit] Recycling
[edit] Further reading
- Brody, A. L., and Marsh, K, S., "Encyclopedia of Packaging Technology", John Wiley & Sons, 1997, ISBN 0-471-06397-5
- Soroka, W, "Fundamentals of Packaging Technology", IoPP, 2002, ISBN 1-930268-25-4
[edit] External links
- TAPPI Technical Association of the Pulp and Paper Industry
