Main roll for an air press of a papermaking machine
A roll for use in an air press assembly of a papermaking machine has a pair of ends associated therewith. The roll includes a pair of edge portions with each edge portion extending to one of the pair of ends. Each edge portion has an edge surface portion composed of a first material, the first material having a first hardness. The roll further includes a middle portion located between the pair of edge portions, the middle portion having a middle surface portion composed of a second material. The second material has a second hardness, the second material being harder than the first material. The first material is preferably a soft, seal material which promotes reduced air leakage from the air press assembly.
- Research Organization:
- Voith Paper Patent Gmbh, Heidenheim, DE (Germany)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC36-01GO10622
- Assignee:
- Voith Paper Patent Gmbh
- Patent Number(s):
- 6,702,924
- Application Number:
- 09/965,016
- OSTI ID:
- 1174754
- Country of Publication:
- United States
- Language:
- English
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