Moisture/temperature: Expansion and wrinkling

By Dr. David R. Roisum

There are at least three reasons why hygrothermal expansion is important.

The first is for machine design and maintenance, which we already covered in Web201.69k. Second is for PRODUCT/process design that help meet dimensional specifications and to keep a product flat. Third is that changes in moisture and temperature are one of the 20 most-common causes for web wrinkling and one of the 10 most-common causes of wound-roll wrinkling.