Method and apparatus for producing calendered paper or board

Details Method and apparatus for producing calendered paper or board Method and apparatus for producing calendered paper or board

2005-05-10

2005-05-10

Chin, Peter (Department: 1731)

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

C162S204000, C162S214000, C162S361000, C162S358100, C162S358300, C100S038000, C100S306000, C100S311000, C100S313000, C100S153000, C100S161000

Reexamination Certificate

active

06890407

ABSTRACT:
A method and an arrangement for manufacturing calendered paper or board particularly in the on-line manufacturing method. In the method, a base web is formed from a mixture of water and pulp supplied from the headbox and the web is dried by removing water over the press section and over the dryer section by heating. The formed web is calendered at least once to modify the surface on at least one of its sides. Before calendering the cross-direction thickness profile of the web is standardized and calendering is carried out by means of a long-nip calender, whereby good surface quality is obtained without losing the bulk or stiffness of the web.

REFERENCES:
patent: 5651863 (1997-07-01), Van Haag et al.
patent: 5658432 (1997-08-01), Heaven et al.
patent: 6179964 (2001-01-01), Begemann et al.
patent: 6413371 (2002-07-01), Ahonen et al.
patent: 6418840 (2002-07-01), Viljanmaa
patent: 0 826 821 (1998-03-01), None
patent: WO 9534715 (1995-12-01), None
patent: WO 9832916 (1998-07-01), None
patent: WO 9844195 (1998-10-01), None

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