Process and apparatus for producing a tissue web

Details Process and apparatus for producing a tissue web Process and apparatus for producing a tissue web

2011-03-15

2011-03-15

Halpern, Mark (Department: 1741)

Paper making and fiber liberation

Apparatus

With product winding or reeling means

C162S358300, C162S281000, C162S363000, C162S900000, C034S114000, C034S452000

Reexamination Certificate

active

07905989

ABSTRACT:
An apparatus for producing a fibrous web includes: a circulating permeable structured belt defining a sheet forming zone in which the fibrous web is formed; a circulating unstructured permeable supporting belt; a pressing section through which the fibrous web is led lying between the circulating permeable structured belt and the circulating unstructured permeable supporting belt; a Yankee cylinder having a surface and defining a press nip and a press nip region, wherein the fibrous web is led together with the structured belt through said press nip, the fibrous web in the region of the press nip being transferred from the structured belt to the surface of the Yankee cylinder; at least one doctor which doctors off the surface of the Yankee cylinder continuously; and a coating device which recoats the surface of the Yankee cylinder so that a renewed coating material is always present in the press nip.

REFERENCES:
patent: 6187137 (2001-02-01), Druecke et al.
patent: 6669818 (2003-12-01), Lindén
patent: 6921460 (2005-07-01), Hermans et al.
patent: 2004/0173333 (2004-09-01), Hermans et al.
patent: 2005/0167066 (2005-08-01), Herman et al.
patent: 2007/0074837 (2007-04-01), Scherb et al.

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