WEB TENSION PROFILE MEASURING METHOD AND A ROLL FOR APPLYING THE SAME

摘要

The invention relates to a method and a roll for measuring a web tension profile by a spiral inclined pressure sensor film, e.g., an EMFi pressure sensor film, which contacts the web at an inclination. The film has been oriented in such a way that its measurement region in the machine direction is equally long as or shorter than the coverage area of the web when using the roll for measuring a cross-sectional tension profile.