Patent ID: 6221214
Filing Date: 2001-04-24
Classification: D21F

Abstract:
A wet section of a machine for producing a fibrous material web, comprising:a web forming section that preforms the fibrous material web, the web forming section comprising a headbox for supplying a fibrous material pulp and dilution water to the machine;at least one press nip through which the fibrous material web is guided, the at least one press nip comprising an elongated press nip formed between two opposed shoe press rolls having flexible press jackets;at least a first belt set disposed on one side of the web and at least a second belt set disposed on the other side of the web, with the first belt set and the second belt set being guided with the web through the at least one press nip; andeach of the first belt set and the second belt set comprising a woven belt disposed adjacent the web, a porous belt disposed adjacent the woven belt, and a waterproof belt disposed adjacent the porous belt, wherein the waterproof belt comprises one of the flexible press jackets of one of the shoe press rolls;wherein the press nip is located in the web forming section where a dry matter content of the fibrous material web, as it enters the press nip, does not exceed approximately 15%.