What Valmet Paper Lab measures?

Bending Stiffness (Board and Paper models)

The Bending Stiffness module is available in two versions, for paper or board. The module cuts a test specimen of the sample, bends it downwards, and measures the bending resistance of both sides.

Measuring range paper
Bending Res. (stiffness) 0.016 - 1 mNm (Taber)
available angles 5° / 7.5° / 15°
Basis Weight range appr. 50-150 g/m² (grade dependent)

Measuring range board
Bending Res. (stiffness) 1 - 100 mNm (Taber)
available angles 5° / 7.5° / 15°
Basis Weight range appr. 150-400 g/m² (grade dependent)

Bending Stiffness Paper, measurement according to standard ISO 5628. Related standards: ISO 2493, DIN 53121, TAPPI T566, TAPPI T556, SCAN P29.

Bending Stiffness Board, measurement according to standard ISO 5628. Related standards: ISO 2493, DIN 53121, TAPPI T489, TAPPI T556.

Datasheet