Paper machine for the production of tissue paper

Details Paper machine for the production of tissue paper Paper machine for the production of tissue paper

1993-07-27

1995-02-28

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

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

162206, 162301, 1623583, 1623602, 1623603, D21F 304

Patent

active

053933842

ABSTRACT:
The invention is directed to a paper machine for the production of a fiber web, including a headbox for forming the fiber web. Disposed adjacent the headbox is either a dewatering unit, e.g., a dewatering cylinder, a double wire former or a four-drinier wire section. Also provided are at least one press unit for dewatering the fiber web, a tissue drying cylinder for finish drying the fiber web, a device for fiber web pickup from the tissue drying cylinder (Yankee cylinder), e.g., a creping doctor or a Clupak device, and a carrier belt for carrying the fiber web. At least one of the press units is configured as a shoe press for drying the fiber web, and includes a device for immediately separating the fiber web from a press felt after at least one press pass. The belt is preferably water impermeable, and an adhesion force between the water impermeable belt and the fiber web is greater than an adhesion force between the press felt and the fiber web.

REFERENCES:
patent: 4055461 (1977-10-01), Turunen
patent: 4144124 (1979-03-01), Turunen et al.
patent: 4483745 (1984-11-01), Wicks et al.
patent: 4526655 (1985-07-01), Karrinen et al.
patent: 4738752 (1988-04-01), Busker et al.
patent: 4915790 (1990-04-01), Dahl
patent: 4976820 (1990-11-01), Laapotti
patent: 4988410 (1991-01-01), Meinecke et al.

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