Mini-Encyclopedia of Papermaking Wet-End
Part Two: Definitions and Concepts
Dry strength is a general term that applies to various destructive tests of paper. The word "dry" usually implies that the paper is in equilibrium with the 50% relative humidity condition of a standard testing laboratory. The words "dry strength" are most often associated with tensile strength, burst strength, and internal bond strength. Dry stength usually is increased by refining and by addition of starch products, etc. However, as shown below, tear strength may decline at some point if the increased bonding within a paper sheet has the effect of making it more brittle.
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