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US 7,000,536 B2Granted
Belt calender
AssigneeMetso Paper, Inc.
InventorsMarkus Laitila, Mika Viljanmaa
Life of this patent
Estimating the term…
Abstract
The invention relates to a belt calender, comprising a first roll (11), a second roll (13; 15), and a belt loop therebetween, comprising an incompressible metal belt (12) pressed by the second roll (13; 15) against the first roll (11) to establish a calendering zone between the first roll (11) and said belt (12). The second roll (13; 15) is provided with a compressible belt section (14; 18) to be pressed against the metal belt (12).
Claims4
A belt calender, comprising:
- a first roll (11),
- a second roll (13;
- 15), and
- a belt loop arranged between said first and second roll, said belt loop comprising an incompressible metal belt (12) pressed by the second roll (13;
- 15) against the first roll (11) to establish a calendering zone between the first roll (11) and said incompressible metal belt (12),
- wherein the first roll (11) comprises a polymer-coated roll and the second roll (13;
- 15) is provided with a resiliently compressible belt section (14;
- 18) to be pressed against the incompressible metal belt (12), the belt calender for treating both sides of a web simultaneously in the calendering zone, and wherein the incompressible metal belt extends over a plurality of guide rolls;
- and wherein the resiliently compressible belt section having a compressible belt extends over a plurality of guide rolls, and the compressible belt is pressed by the second roll against the incompressible metal belt.
6 more elements
A method for calendering a web of material in a belt calender comprising the steps of:
- arranging a first roll and a second roll and a belt around said second roll, wherein said belt comprises an incompressible metal belt;
- pressing said belt by said second roll against said first roll such that a calender zone is defined between the first roll and said belt;
- wherein said first roll comprises a polymer-coated roll and said second roll is provided with a resiliently compressible belt section to be pressed against said metal belt;
- and
- passing a web of material through a nip defined between the polymer coated and the metal belt to treat both sides of the web simultaneously in the calendering zone, and wherein the incompressible metal belt extends over a plurality of guide rolls;
- and wherein the resiliently compressible belt section having a compressible belt extends over a plurality of guide rolls, and the compressible belt is pressed by the second roll against the incompressible metal belt.
3 more elements
Dependencies are inferred from the claim text.