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公开(公告)号：EP4428296A3
公开(公告)日：2024-11-13
申请号：EP24191765.7
申请日：2013-01-25
摘要： An improved processes for making fluff pulp sheets mechanically eliminates many of the unwanted fiber-to-fiber bonding (fiber bundles) which may be contained in the sheet to produce consistent and uniform quality fluff pulp. Pulp slurry is deposited on a moving bottom forming wire to form a stock web. Pulp slurry is brought into contact with a moving top forming wire. The stock web is subjected to up and down dewatering creating separately formed layers to reduce fiber-to-fiber bonding. The stock web can be subjected to strong pulsating shear forces as it is being advanced along the bottom forming wire to break a majority of fiber bundles contained in the web. The pulp slurry can be deposited on the bottom forming wire utilizing a headbox with dilution control to selectively adjust the concentration of the pulp slurry. A shoe press can be used to dewater the web after it is subjected to the pulsating shear forces. The web can be dried utilizing conventional drying equipment, such as cylindrical driers.
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公开(公告)号：EP3828337B1
公开(公告)日：2024-11-06
申请号：EP20210225.7
申请日：2020-11-27
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3.发明公开
公开(公告)号：EP4357503A1
公开(公告)日：2024-04-24
申请号：EP23198174.7
申请日：2023-09-19
发明人： Andreas, Schmidt
CPC分类号： D04H1/425 , D04H1/736 , D04H1/732 , D21F9/00 , D21G9/0018 , D01G11/00 , B27N1/00 , B27N3/04 , B27N3/12
摘要： Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Herstellung eines Vliesproduktes (1) aus wirr im Luftstrom gelegten Fasern (2), insbesondere Zellulosefasern, bei dem ein Fasermaterial, welches Fasern (2) in gebundener Form umfasst, in wenigstens einer Mühle (4) zerfasert wird und die hierdurch gebildeten Fasern (2) in einem Luftstrom von der wenigstens einen Mühle (4) zu wenigstens einem Ablegesieb(5) gefördert werden und auf dem wenigstens einen Ablegesieb (5) wirr abgelagert werden, wodurch sich auf dem jeweiligen Ablegesieb (5) das jeweilige Vliesprodukt (1) ausbildet, wobei ein Fasermaterial (3) in einer Vorzerkleinerungsvorrichtung (6) in ein in einem Luftstrom förderfähiges vorzerkleinertes Fasermaterial (7) zerlegt wird und das vorzerkleinerte Fasermaterial (7) in einen Pufferspeicher (8) überführt wird zur Bildung eines vorzerkleinerten Fasermaterial-Vorrats (7a), wobei dem gebildeten Fasermaterial-Vorrat (7a) mit wenigstens einer Entnahmevorrichtung (9), vorzugsweise mehreren parallel betriebenen Entnahmevorrichtungen (9) vorzerkleinertes Fasermaterial (7) entnommen und im Luftstrom (9) der wenigstens einen Mühle (4) zugeführt wird. Die Erfindung betrifft auch ein so hergestelltes Vliesprodukt.
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公开(公告)号：EP4339344A1
公开(公告)日：2024-03-20
申请号：EP23197722.4
申请日：2023-09-15
发明人： KANADA, Hidemasa , NAGAI, Yoshiyuki , FUKASAWA, Masanao , MIYAZAWA, Kazuma , NAKAMURA, Masahide
摘要： There is provided a sheet manufacturing apparatus including: an accumulation section that accumulates a material containing fibers by an air flow to form a web; a humidification section that applies moisture from one surface side of the web; and a pressurization section that pressurizes the humidified web to form a sheet, in which the pressurization section includes a first roller that comes into contact with one surface of the web and a second roller that comes into contact with the other surface of the web, and a surface of the first roller is harder than a surface of the second roller.
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公开(公告)号：EP4249675A3
公开(公告)日：2023-12-27
申请号：EP23192183.4
申请日：2017-01-31
申请人： GPCP IP Holdings LLC
发明人： BECK, David A.
摘要： It is provided a roll for molding a fibrous sheet. The roll comprising:
(A) a cylindrical shell configured to be rotatably driven in a circumferential direction, the cylindrical shell including:
(a) a structural layer having an interior surface, an exterior surface, and a plurality of holes extending from the exterior surface to the interior surface to allow air to be moved through the structural layer; (b) a molding layer having a permeable patterned surface, the permeable patterned surface having at least one of a plurality of recesses and a plurality of projections, the density of the at least one of the plurality of recesses and the plurality of projections being greater than about fifty per square inch; and (c) an air distribution layer located between the structural layer and the molding layer, the air distribution layer being permeable to distribute air moved through the structural layer in the circumferential direction of the shell and under the molding layer; and
(B) a vacuum box positioned on the inside of the cylindrical shell and being configured to draw air through the molding layer, the air distribution layer, and the plurality of holes to the interior surface of the structural layer, the vacuum box being stationary with respect to the rotation of the cylindrical shell.-
公开(公告)号：EP4067030B1
公开(公告)日：2023-12-13
申请号：EP22165105.2
申请日：2022-03-29
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公开(公告)号：EP4283033A1
公开(公告)日：2023-11-29
申请号：EP23175642.0
申请日：2023-05-26
摘要： A sheet manufacturing apparatus includes a pipe that supplies a material containing fibers, a supply direction change section that changes a movement direction of the material supplied from the pipe, a reducer section that is disposed downstream of the supply direction change section and decreases a movement speed of the material, and an accumulation section that is disposed downstream of the reducer section and accumulates the material to form a web.
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公开(公告)号：EP4127290A1
公开(公告)日：2023-02-08
申请号：EP21779947.7
申请日：2021-03-31
发明人： QIN, Jian , RANGANATHAN, Sridhar , ABUTO, Francis , KAUL, Vikram
IPC分类号： D04H1/736 , D21F1/02 , D21F1/04 , A61F13/532 , A61F13/535 , D21F9/00 , D21F11/00
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