Patent ID: 6598521
Filing Date: 2003-07-29
Classification: D21G

Abstract:
A soft nip calender fix calendering a web comprising:a calender frame; a first heated calender roll mounted for rotation to the frame, the roll having a first cylindrical shell defining a web contacting surface, the surface being hard and smooth; a second calender roll, the roll having a second cylindrical shell having a first selected exterior diameter, the second cylindrical roll being mounted for rotation to the calender frame in spaced parallel relation with the first heated calender roll, the second calender roll defining roll gables at opposed ends of the second calender roll; and an endless polymer mantle belt mounted coaxially with a second calender roll, the mantle belt defining an interior diameter, the interior diameter of the mantle belt being 5-50 mm larger than the first selected diameter; wherein the polymer mantle belt is joined to the gables of the second calender roll by two spaced clamping rings, wherein the clamping rings are mounted to the gables by bearings.