Method for producing fiber rolls
AssigneeOy Wartsila Ab
InventorEero Paakkunainen
Life of this patent
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Abstract
A fiber roll and a method for producing the fiber roll comprising a load carrying shaft portion and having thereon a cover portion made of fiber material. The cover portion is made by subjecting a great number of annular fiber material sheets fitted on the shaft portion to a very strong compression in the axial direction of the roll. The method includes the step of making at least one supply duct leading from an end portion of the roll to the interface of the shaft portion and the cover portion. After the axial compression of the fiber material, a hardening fluid is fed through the supply duct and pressure is applied thereto so as to force the fluid to penetrate between the cover portion and the shaft portion and to fill all possible cavities between the shaft portion and the cover portion.
Claims11
In a method for producing a fiber roll usable as a calender roll, the roll comprising a load carrying shaft portion and thereon a cover portion made of fiber material forming the outer portion of said roll, said cover portion being made by strong compression of the fiber material, in an axial direction of the roll, of a great number of annular fiber material sheets fitted on said shaft portion, said method including the steps of:
- making at least one supply duct leading from an end portion to said roll to the interface of said shaft portion and said cover portion,
- after said axial compression of the fiber material, feeding a hardenable fluid through said supply duct, and
- applying pressure thereto so as to force said fluid to penetrate between said cover portion and said shaft portion and to fill possible cavities between said shaft portion and said cover portion and hardening said fluid.
A fiber roll for use as a calender roll comprising
- a load carrying metal shaft portion and thereon a cover portion made of fiber material, said portion being made by
- applying on said shaft portion a great number of annular fiber material sheets,
- subjecting said sheets to a strong compression in an axial direction of the roll, making at least one supply duct leading from an end portion of said roll to the interface of said shaft portion and said cover portion,
- feeding a hardenable fluid through said supply duct after said axial compression of the fiber material, and applying pressure to said fluid so as to force said fluid to penetrate between said cover portion and said shaft portion and to fill any cavities between said shaft portion and said cover portion and hardening said fluid.
Dependencies are inferred from the claim text.