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US 7,883,454 B2Granted
Inner elongated structure of the roll of a paper/board machine or finishing machine
AssigneeMetso Paper, Inc.
InventorsTommi Korolainen, Kari Holopainen, Ari Lehto
Life of this patent
Estimating the term…
Abstract
The roll of a paper/board machine or finishing machine has an inner elongated structure (11; 104) which is at least partly comprised of composite material, including reinforcing fibers in matrix material. The structure is preferably comprised of a combination of metallic material and composite material.
Claims18
A roll assembly in a paper/board machine or finishing machine comprising:
- an inner non-rotating fiber reinforced material beam;
- and
- a roll shell mounted for rotation on and with respect to the inner non-rotating fiber reinforced material beam, wherein the inner non-rotating fiber reinforced material beam is at least partly comprised of composite material of reinforcing fibers in a matrix of polymeric material;
- wherein the fiber reinforced material beam has upper portions which define a longitudinal groove in which a support part holds a plurality of support elements in supporting engagement with the roll shell, the support part being of steel or cast iron and positioned on the fiber reinforced material beam by means of an intermediate layer which is selected to even out differences in thermal expansion between the support part and the beam and which intermediate layer fixes the support part to the fiber reinforced material beam.
1 more element
A roll assembly in a paper/board machine or finishing machine comprising:
- an inner non-rotating structure;
- and
- a roll shell mounted for rotation about the inner non-rotating structure, wherein the inner non-rotating structure is at least partly comprised of a fiber-reinforced polymeric material;
- wherein the inner non-rotating structure is a beam having a fiber-reinforced polymeric material lower portion and an upper part made of steel or cast iron fixed to the fiber-reinforced lower portion.
1 more element
A suction roll assembly in a paper/board machine or finishing machine comprising:
- an inner non-rotating suction box structure;
- and
- a roll shell which is perforated, mounted for rotation about and with respect to the inner non-rotating suction box structure, wherein the inner non-rotating suction box structure is at least partly comprised of composite material of reinforcing fibers in a matrix of polymeric material;
- wherein the suction box has seals mounted to holder structures of composite material of reinforcing fibers in a matrix of polymeric material, which form part of the suction box structure.
1 more element
A roll assembly in a paper/board machine or finishing machine comprising:
- a roll shell;
- an inner non-rotating structure, wherein the roll shell is mounted for rotation about the inner non-rotating structure;
- wherein the inner non-rotating structure comprises a steel or cast iron frame formed as an integrated structure with opposed end parts, each opposed end part having an opposed shaft journal by which the inner non-rotating structure is mounted;
- wherein the opposed shaft journals define a neutral axis and wherein the frame has portions which define a free space in the frame in an area between the end parts where portions of the frame do not extend below the neutral axis, the frame defining a portion above the free space which comprises a member in compression;
- and
- a fiber reinforced bar or plate connecting the opposed end parts and extending across the free space below the neutral axis to form a member in tension.
3 more elements
Dependencies are inferred from the claim text.