Patent ID: 7089682

Claim:
An air impingement system for heating and drying a web travelling around a roll of a drying section, comprising: a single hood positioned so as to surround a portion of the roll upon which the web travels in the drying section, the web wrapping around a lower portion the roll, the hood surrounding a portion of the web extending from proximate a location where the web separates from the roll on a trailing side of the roll and so that a portion of an incoming side of the roll where the web contacts the roll is not wrapped by the hood; at least one fan; a heating device for heating the air blown by the at least one fan; and an air directing means for directing air blown by the at least one fan onto a portion of a surface of the web as the web travels around the roll within the hood; wherein the hood is positioned so that air blown onto the web circulates within the hood.