Measurable properties
Tensile strength (ISO 1924-2)
Tensile strength is evaluated by measuring the force
required to break a 15 mm wide paperboard strip. The
force is divided by the sample width and the result is
expressed in kN/m.
Tensile strength = F/w
F = maximum force
w = initial sample width
Test methods and equipment
All Iggesund Paperboard’s products are tested using
a tensile tester. Besides tensile strength, the instrument
also measures the elongation at break, the
tensile energy absorption, and the tensile stiffness
(elastic modulus).