Measurable properties
The measurable properties are those which are commonly
found when describing the technical data for a
paperboard grade. The methods described are those
most commonly used. They are also used by Iggesund
Paperboard.
For further information about specific testing equipment
see the manufacturers’ product catalogues
(e.g. Lorentzen & Wettre).
The measuring methods for the properties listed are
described in the following pages:
• tensile strength
• tearing resistance
• interlayer strength, plybond
• bending stiffness
• bending resistance
• bending moment
• density
• dimensional properties - Flatness
• grammage
• grammage (plastic-coated products)
• thickness
• compression strength
• moisture content
• stiffness
• curl and twist.