Method and device in continuously operated unwinding of a paper reel
AssigneeMetso Paper, Inc.
InventorsTeppo Kojo, Janne Veräjänkorva, Petteri Lannes
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Abstract
The invention relates to a method in continuous unwinding of a paper web, in which a paper reel (3) wound on a reeling core (2) or the like is unwound by rotating the same to guide the paper web (1) to a further processing stage. The method is characterized in that the shape of the outer surface of the unwound paper reel (3) is measured with the aim of detecting the defects possibly occurring in the paper reel (3) the invention also relates to an apparatus for applying the method.
Claims22
A method in continuous unwinding of a paper web from a paper reel including a core on which the web has been wound, comprising the steps of:
- unwinding said paper web by rotating said paper reel;
- measuring the radial shape of an outer surface of said paper reel in a plane perpendicular to an axis of said reel, during said unwinding step;
- and
- guiding said paper web from said paper reel to a processing stage.
An apparatus for use in continuous unwinding of a paper web from a paper reel including a core on which the web has been wound, comprising:
- at least one member situated adjacent to said paper web being unwound from said paper reel, said at least one member structured and arranged to measure the radial shape of an outer surface of said paper reel in a plane perpendicular to an axis of said paper reel, during said unwinding.
Dependencies are inferred from the claim text.