Valmet Aktiebolag

Valmet Ab

Danilo Marcos

Anders Lindén

Michael Bjerke

Elin Engqvist

Magnus Holmberg

Johan Rågård

Petter Ericsson

Bruno Tremblay

Jan Erikson

Johan Björn

Viktor Bergström

Arvid Johansson

Viktor Bergstrom

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

The invention relates to a method of transferring a tissue web with residual moisture to a Yankee cylinder and final removal of the dried tissue web from the Yankee cylinder using a doctor blade and collecting the dried web on a reel-up machine forming a tissue reel. The invention also relates to the Yankee adhesive composition per se. The method involves preparation of a water solution of a Yankee adhesive composition with less than 10% final solids content to be applied on the surface of the Yankee cylinder ahead of transferring the tissue web with residual moisture to the Yankee cylinder. The inventive method applies an aqueous PVOH solution with a very high molecular weight polyvinyl alcohol as a part of the solid content of the Yankee adhesive in an amount ranging from 20-65% of the final solids content of the Yankee adhesive. The aqueous PVOH solution with the very high molecular weight polyvinyl alcohol establish a viscosity ranging from 90 cP to 300 cP.

Yankee adhesive compositions and methods of using these compositions

Growing community of inventors

Karlstad, Sweden

Danilo Marcos