Composite machine roll and method of manufacture
AssigneeComposite Development Corporation
InventorPeter A. Quigley
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Abstract
A machine roll has a roller sleeve structured with an outer layer that is hard, wear resistant and machinable, and with an interior body layer of a fiber-reinforced polymer. The body layer is relatively light in weight, is structured to damp vibration and provides the structural rigidity of the roll. The sleeve can also have one or more interface layers, preferably of a composite, disposed in one instance between the outer and body layers and disposed in another instance within the body layer.
Claims20
In a machine roll having a pair of axially spaced journals mounting a roller sleeve, the improvement in which
- A. said roller sleeve is a tubular laminate of at least a first tubular layer and a second tubular layer disposed thereover, said second tubular layer forming the machine roll outer surface and having a hard, scratch resistant and dimensionally stable outer surface, and
- B. said first tubular layer has high mechanical damping and high strength, and consists essentially of a composite of polymer resin and reinforcing fibers characterized by damping of vibration greater than by carbon fiber and greater than by fiberglass fiber, whereby said roller sleeve is characterized by significant resistance to mechanical vibration.
A roller sleeve for a machine roll, said sleeve having a cylindrical outer surface and a tubular inner surface, said sleeve comprising
- A. a first interior tubular layer of fiber-reinforced composite material and having inner and outer tubular surfaces, said first layer being characterized by light weight and high damping of mechanically induced vibration and being structured essentially of resin and of high damping polymer fibers, and
- B. a second layer disposed over the tubular outer surface of said first layer, said second layer having a selected relatively high hardness for resisting scratching and abrasion and forming said sleeve outer surface.
A method of fabricating a roller sleeve comprising the steps of
- forming a tubularly-shaped damped body layer of polymer reinforced with fibers,
- selecting said fibers to have mechanical damping in excess of that of carbon fibers and of fiberglass fibers
- applying a machinable and hard, wear-resistant outer roller layer over said body layer.
Dependencies are inferred from the claim text.