Abb Industry Oy

Saimatec Engineering Oy

Saimtec Engineering Oy

Heikki Rasimus

Risto Laukkanen

Seppo Rasimus

Ismo Itkonen

Veli Ulvinen

Esa Nuutinen

Tapio Korhonen

Juha Pitkänen

Timo Silvennoinen

The invention relates to a method for packaging rolls, particularly paper web rolls; the method includes the steps of taking a roll into a supported position on a roll rotation station and wrapping onto the roll a paper wrapper or the like material dispensed by means of at least one wrapper dispensing station and dispensing means, whereby the wrapper is wound so as to form either a centered wrapping or an overlapping wrapping. The invention is implemented by way of aligning the roll for the wrapping operation by means of transferring the roll rotation station laterally in the axial direction of the roll in regard to the wrapper dispensing system. The invention also relates to an apparatus and a novel roll package utilizing the method.

Method of packaging rolls, particularly paper web rolls, apparatus for implementing the method and roll package

A package of a roll, particularly a paper web roll comprising a wrapper, particularly a paper web wrapper wound stagewise into at least two wrappings about the roll in an overlap fashion. The paper web wrapper is wound about the roll in a slightly helical manner so that the edges of the wrapper layers overlap in a staggered fashion. The staggered edges of the overlap wrapping are formed so that each superposed wrapper layer conceals the underlying wrapper layer, whereby in a finished wrapping of a product only one wrapper edge remains visible.

Roll package

A method and arrangement for adaptively compensating for load changes, particularly in connection with an electric motor drive which comprises a motor, the shaft of the motor being connected to a load (,) having a known moment of inertia; a device (,), such as an inverter, to control the motor, a torque controller being arranged in connection with the device; and a speed controller (,) arranged to control the speed of the motor. The method comprises steps of determining, during the load change, an estimate (M,) for an external torque disturbance which causes load changes, and employing the torque disturbance estimate (M,) determined during the previous load change for compensating for the external torque disturbance in controlling the torque of the motor.

Method and arrangement for adaptive load change compensation

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Savonlinna, Finland

Heikki Rasimus