This entry is a stub, a starting point for writing a full entry. You can help PrintWiki by expanding it! Just click the "Edit" button.
Paper stiffness is the ability for a sheet of paper to resist bending. Stiffness is influenced by the thickness and basis weight of the sheet.
Stiffness can vary from machine direction (MD) to cross machine direction (CMD). Paper stiffness is typically stiffer across the grain due to the resistance of the paper fibers to bend across themselves.
Measuring Paper Stiffness
Stiffness can be measured using number of different testing devices. A common device is the Gurly stiffness tester. The Gurly testeer uses its own units and is governed by the TAPPI T 543 paper standard.