Apparatus for forming, pressing and drying paper webs having a f

Details Apparatus for forming, pressing and drying paper webs having a f Apparatus for forming, pressing and drying paper webs having a f

1988-08-22

1990-03-27

Alvo, Steve

Paper making and fiber liberation

Apparatus

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

162359, 1623601, D21F 200, D21F 300, D21F 500, D21F 900

Patent

active

049117912

ABSTRACT:
A machine for producing thin paper web at high speed comprises a forming section (often called a twin wire former), a web transfer section (in which the formed sheet is transferred to the press felt), and a press roll over which the press felt with the web is turned so that the web presses against the warm Yankee cylinder, the web being formed between a felt--or a press fabric (2)--and a forming fabric (3). The forming unit, consisting of the felt and fabric, is placed in such a position in relation to the press roll (8) that the web (10), when separated from the forming fabric (3), is transproted on the top side of the felt (2) into a press nip against a Yankee cylinder (7) surface along a straight path tangentially to the Yankee cylinder surface.

REFERENCES:
patent: 3331734 (1967-07-01), Rojecki
patent: 3560333 (1971-02-01), Douglas et al.
patent: 4008122 (1977-02-01), Welte
patent: 4139410 (1979-02-01), Tapio et al.
patent: 4526655 (1985-07-01), Karvinen et al.

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