Valmet Aktiebolag

Elin Engqvist

Leif Videgren

Anders Lindén

Tord Gustavsson

Danilo Marcos

Jan Erikson

Johan Björn

Arvid Johansson

Johan Rågård

Magnus Holmberg

Stefan PÅLSSON

The invention relates to a tissue paper making machine designed for possible rebuild from one concept to another. The machine comprises a forming section () and a Yankee drying cylinder () mounted to be rotatable about a first axis of rotation (A). The forming section has a forming roll mounted for rotation about a second axis of rotation (A) which is parallel to the first axis of rotation (A). The forming section () has a head box () and a first and a second forming fabric (). The head box () is arranged to inject stock into a gap () between the first forming fabric () and the second forming fabric (). The first forming fabric () is a felt that forms a loop and is arranged to carry a newly formed fibrous web (W) from the forming section () to the Yankee drying cylinder (). The tissue paper making machine () comprises a press roll () arranged inside the loop of the first forming fabric () and forming a nip (N) against the Yankee drying cylinder (). The distance (X) in the horizontal direction between the first axis of rotation (A) and the second axis of rotation (A) is in the range of 18 m-40 m.

Tissue paper making machine

Aspects provide for a Whitewater processing system suitable for managing an ejected Whitewater spray during operation of a paper or board making machine. A de-air system may provide for improved removal of air from the Whitewater. A calming system may reduce turbulence in a liquid flow, reducing turbulence in the flume. The de-air system and calming system may be disposed together or separately. Certain aspects may be implemented with a turbine (e.g., used to generate electricity from the Whitewater spray). Some aspects may provide for improved handling of variable spray velocities.

Apparatus and method for processing white water in a paper machine

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Karlstad, Sweden

Elin Engqvist