Patent ID: 6257520
Filing Date: 2001-07-10
Classification: B65H

Abstract:
A noncontact web transporting apparatus, comprising:at least two cylindrical air chambers which support a web running along helical routes through air films without coming into contact with the web by jetting air from jets formed in peripheries of the at least two cylindrical air chambers, the at least two cylindrical air chambers being substantially arranged parallel;direction changing air chambers which support the web through air films by jetting air from jets formed in peripheries of the direction changing air chambers to change running directions of the web when the web enters and leaves the helical routes of the at least two cylindrical air chambers, the direction changing air chambers being arranged in rows at both ends of the at least two cylindrical air chambers;a tension determining device which determines tensions at both edges of the web before the web enters the helical routes of the at least two cylindrical air chambers, the tension determining device being arranged above the at least two cylindrical air chambers; andan inclining device which inclines the direction changing air chambers according to determination results of the tension determining device.