Apparatus to produce a fibrous web

Details Apparatus to produce a fibrous web Apparatus to produce a fibrous web

2011-07-12

2011-07-12

Halpern, Mark (Department: 1741)

Paper making and fiber liberation

Apparatus

Apparatus repair, cleaning or conditioning

Reexamination Certificate

active

07976681

ABSTRACT:
An apparatus to produce a fibrous web having a three-dimensional surface structure, especially a paper, cardboard or tissue web, includes a headbox, a forming element, especially a forming roll, a structured fabric and a dewatering fabric, whereby the structured fabric and the dewatering fabric run together and form a stock infeed nip and are carried over the forming element whereby the structured fabric is the inside fabric and the dewatering fabric is the outside fabric and whereby fibrous suspension is fed into the stock infeed nip by way of the headbox. At least one catch pan is provided in the area of the outfeed nip which is formed between the forming element and the structured fabric coming off it for water, fibers, fines and/or similar substances accumulating in the area of this outfeed nip.

REFERENCES:
patent: 4529480 (1985-07-01), Trokhan
patent: 2003/0136018 (2003-07-01), Herman et al.
patent: 2005/0126031 (2005-06-01), Herman et al.
patent: 2005/0167066 (2005-08-01), Herman et al.
patent: 3222428 (1983-12-01), None
patent: 0075423 (2000-12-01), None
patent: 2005075737 (2005-08-01), None
11 pages of documents for PCT/EP2007/064201 dated May 2, 2008.

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