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US 2020/0378068 A1Published application
Machine and method for manufacturing tissue paper
AssigneeA.Celli Paper S.P.A.
InventorAndrea FILIPPI
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AssigneeA.Celli Paper S.P.A.
InventorAndrea FILIPPI
Estimating the term…
The machine (10) comprises a Yankee cylinder (35), having a cylindrical side surface (35S), rotating around an axis (35A) thereof, and a continuous flexible member (17) comprising a first surface (17A) suitable to receive a layer of cellulose pulp (S), comprising cellulose fibers and water, and a second surface (17B), opposite to the first surface (17A). A guide roller (31) is also provided, around which the continuous flexible member (17) is driven. The second surface (17B) of the continuous flexible member (17) is in contact with the first guide roller (31). The machine further comprises a first pressure roller (33) around which the continuous flexible member (17) is driven, arranged downstream of the guide roller (31) with respect to a feeding direction of the layer of cellulose pulp (S). The first pressure roller (33) and the Yankee cylinder (35) define a first pressure nip (34), inside which the continuous flexible member (17) is pressed by means of the first pressure roller (33) against the cylindrical surface (35S) of the Yankee cylinder (35) in order to remove water from the layer of cellulose pulp (S) through the continuous flexible member (17).
A machine (10) for wet manufacturing of tissue paper, comprising in combination:
The machine (10) of one or more of the previous claims, wherein the first pressure roller (33) is a pressure roller with dead holes (57).
The machine (10) of one or more of the previous claims, further comprising a second pressure roller (61), around which the continuous flexible member (17) is driven, arranged downstream of the first pressure roller (33) with respect to the feeding direction of the layer of cellulose pulp (S);
The machine (10) of one or more of the previous claims, comprising a heating device adapted to act on said continuous flexible member (17) and arranged between said guide roller (31) and said first pressure roller (33).
The machine (10) of one or more of the previous claims, further comprising a forming wire (15), adapted to receive the layer of cellulose pulp (S) from a headbox (11), and configured to transfer, directly or indirectly, the layer of cellulose pulp (S) to the continuous flexible member (17).
The machine (10) of one or more of the previous claims, wherein said heating device comprises an air suction module arranged preferably at opposite side from the continuous flexible member and facing it.
The machine (10) according to one or more of the previous claims, comprising a further heating device arranged immediately upstream of the guide roller.
A method for removing water from a layer of cellulose pulp (S) comprising water and cellulose fibers, the method comprising the following steps:
Dependencies are inferred from the claim text.