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公开(公告)号：US20240344274A1
公开(公告)日：2024-10-17
申请号：US18579219
申请日：2022-06-30
申请人： Klabin S.A.
IPC分类号： D21H21/10 , B65D65/46 , D21D1/20 , D21F11/02 , D21H11/04 , D21H17/34 , D21H19/38 , D21H19/54 , D21H21/12 , D21H23/04 , D21H27/10
CPC分类号： D21H21/10 , B65D65/46 , D21D1/20 , D21F11/02 , D21H11/04 , D21H17/34 , D21H19/385 , D21H19/54 , D21H21/12 , D21H23/04 , D21H27/10 , B65D2565/382
摘要： The present invention is related to a water dispersible paper, particularly for use in packages in the construction area. The dispersibility of the paper of the present invention is achieved due to the low wet resistance and high capillary absorption and basically consists of an unbleached cellulose-based paper aiming at the reduction of ingredients conventionally used, adding only defoamers and drainage aids in the formulation thereof. The paper of the present invention consists in the elimination of the use of disintegration aids (such as surfactants), gluing agents and dry resistance agents (such as starch). There is further described a manufacturing process for dispersible paper which allows obtaining a paper having low wet tensile strength and high capillary rise without the need for the chemical agents usually known for the manufacture of this type of paper. The present invention further foresees a package containing said paper for use in construction such as in packages for, lime, sand, cellulosic or synthetic fibers or powder pigments, among others.
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公开(公告)号：US20240328085A1
公开(公告)日：2024-10-03
申请号：US18740670
申请日：2024-06-12
申请人： VALMET AB
发明人： Robert SHORT
IPC分类号： D21D1/30
CPC分类号： D21D1/303
摘要： An accessory is provided for a disc refiner that is for refining lignocellulosic material and includes at least two refiner discs, at least one of which is a rotor refiner disc, a motor, and a rotation shaft assembly that includes (i) a rotation shaft, (ii) a shaft housing, (iii) at least one bearing between the shaft housing and the rotation shaft for allowing rotation of the rotation shaft within the shaft housing, and (iv) at least one ring-shaped locknut that encircles the rotation shaft, is configured for holding the at least one bearing in place on the rotation shaft, and includes notches for a tool to grip when attaching the locknut in the rotation shaft assembly. The accessory is configured to be attached to the locknut and includes at least one covering part configured to at least partly cover the notches of the locknut when attached to the locknut.
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公开(公告)号：US12012695B2
公开(公告)日：2024-06-18
申请号：US17438100
申请日：2020-02-17
申请人： VALMET AB
发明人： Karl Lönngren , Mikael Lundfors
摘要： A double disc refiner includes a first refining disc at a feed end and an opposing second refining disc. The first disc has inlet opening(s) and a first distal surface facing a second disc opposing surface. A first disc refining segment has a second distal surface facing the opposing surface that has a first height relative to a plane of the first distal surface in a direction toward the opposing surface. A first disc center plate has elongated protrusions radially extending therefrom and a third distal surface having a second height in the direction of the first height that is at least equal to the first height. Each protrusion has a fourth distal surface continuous with the third distal surface and a third height in the direction of the first height equal to the second height. The third distal surface is separated from the opposing surface by 5-15 mm.
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公开(公告)号：US12006627B2
公开(公告)日：2024-06-11
申请号：US15734742
申请日：2019-05-08
申请人： Michael Jarolim
发明人： Michael Jarolim
摘要： A device and method for treating fibres of a mixture of substances containing fibres, wherein the device comprises at least one outlet element for the passage of the mixture of substances containing fibres comprising an outlet opening and at least one first refining surface arranged around the outlet opening in a circumferential direction, as well as at least one feeding device for positioning the outlet element, and wherein a moveable handling body having a second refining surface is arranged opposite the at least one outlet element for handling the mixture of substances containing fibres, wherein, with the passage of the mixture of substances containing fibres through the outlet element, a gap-type handling area is formed between the first refining surface of the outlet element and a sub-surface of the second refining surface of the moveable handling body applied with the mixture of substances.
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公开(公告)号：US20240150962A1
公开(公告)日：2024-05-09
申请号：US18494956
申请日：2023-10-26
发明人： Olli Tuovinen
IPC分类号： D21D1/34
CPC分类号： D21D1/34
摘要： A refining segment (4, 8) for refining fibrous material, and a refining segment (4, 8) for a refiner (1) for refining fibrous material is formed by arranging at least one set of profiled wires (22) next to each other and substantially immovable with respect to each other, wherein a width (Wa) of a bottom (22a) of the profiled wire (22) is different from a width (Wb) of a top (22b) of the profiled wire (22), to form at least one refining bar element (24), and fastening the at least one refining bar element (24) onto a back plate (19), wherein said back plate forms a body of the refining segment (4, 8), by applying at least one solidifying substance (25) between the at least one refining bar element (24) and the back plate (19).
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公开(公告)号：US11965290B2
公开(公告)日：2024-04-23
申请号：US17315638
申请日：2021-05-10
摘要： A refining member comprising a refining body with a refining surface comprising first and second refiner bars separated by first and second refiner grooves, respectively. The first refiner bars extend from a radially inward position to a first radially outward position. The second refiner bars extend to a second radially outward position that is nearer to an outermost part of the refining body than the first radially outward position. The second refiner bars have a longitudinal length from about 0.6 cm to about 10 cm. The first and second refiner bars have a respective first and second maximum height extending upward from a floor of a respective, adjacent first or second refiner groove. The second maximum height is at least 0.35 mm less than the first maximum height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
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公开(公告)号：US20240068161A1
公开(公告)日：2024-02-29
申请号：US17894384
申请日：2022-08-24
申请人： VALMET AB
发明人： Robert SHORT
IPC分类号： D21D1/30
CPC分类号： D21D1/303
摘要： A method for updating a disc refiner by at least partly covering notches of a locknut in the disc refiner and an accessory for a disc refiner Said disc refiner comprising a motor and a rotation shaft assembly, wherein said rotation shaft assembly comprises a rotation shaft, which is connecting the motor and a rotor refiner disc of the disc refiner for driving rotation of the rotor refiner disc from the motor, said rotation shaft assembly further comprising at least one bearing, which is provided between a shaft housing and the rotation shaft for allowing rotation of the rotation shaft within the shaft housing, said rotation shaft assembly further comprising at least one ring-shaped locknut, which is encircling the rotation shaft and configured for holding the at least one bearing in place on the rotation shaft, said locknut comprising notches for a tool to grip when attaching the locknut in the rotation shaft assembly, wherein said accessory is configured for being attached to the locknut and comprises at least one covering part configured for at least partly covering said notches of the locknut when attached to the locknut.
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公开(公告)号：US11898310B2
公开(公告)日：2024-02-13
申请号：US17432458
申请日：2020-02-18
发明人： Petteri Vuorio , Håkan Sjöström
摘要： A processing plate (4, 12) for mechanically processing pulp. The plate has projecting parts (6, 7, 14, 15). The projecting parts (7, 15) have a radially inner part (28) having an inclined ascending wall (29) towards the outer periphery (23) of the plate and a radially outer part (30) having an inclined descending wall (31) towards the outer periphery (23) of the plate (4, 12). The inner and outer parts (28, 30) are radially coupled to each other by a ridge (32) along a coupling line (CL). The walls (29, 31) are mutually connected only partly so that they have in common only a crest section (40) of the ridge (32) which crest section (40) is less than a width of at least one of the wall (29) of the inner part (28) and the wall (31) of the outer part (30) at the coupling line (CL).
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公开(公告)号：US11846069B2
公开(公告)日：2023-12-19
申请号：US15734295
申请日：2019-05-02
申请人： VALMET AB
发明人： Åke Olsson
摘要： A refiner segment for refining lignocellulosic material, has a surface including a plurality of bars extending along a direction between an inner periphery of the refiner segment and an outer periphery of the refiner segment, and a plurality of dams, each of the plurality of dams extending between a corresponding pair of adjacent bars among the plurality of bars, wherein at least one of the plurality of dams is a three-dimensionally extending body including three sides, the three-dimensionally extending body extends between the corresponding pair of adjacent bars and includes a curved side, forming one of the three sides, facing the inner periphery of the refiner segment, the curved side having a concave curvature with regard to the inner periphery to thereby form a rounded section in an area defined by the at least one of the plurality of dams and the corresponding pair of adjacent bars.
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10.发明授权公开(公告)号：US11834785B2
公开(公告)日：2023-12-05
申请号：US16332386
申请日：2017-09-14
申请人： FPInnovations
摘要： The present invention is directed to a method of transforming a pulp fibrous into a pre-dispersed semi-dry or dry fibrous material and to the material produced. The method opens, de-entangles and fibrillates the fibrous material of the input pulp. The method mixes the input fibrous with chemicals while evaporating moisture in an updated mechanical disc refiner process. The refiner operates to set three process variables: 1) applied refining specific energy; 2) refiner gap opening and 3) refiner output consistency. Depending on the feed pulp type and consistency, the refiner's output is a pre-dispersed semi-dry fibrous material of 30 to 99% solids with 70 to 100% of separated fibers that depending on chemical treatment are loosely entangled fibrous that disperse in water using common techniques. The pre-dispersed semi-dry output may be further processed inline or by batch process air agitation at velocities sufficient to further separate fibers and loosen fibrous entanglements.
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