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公开(公告)号：US20240018696A1
公开(公告)日：2024-01-18
申请号：US18035928
申请日：2021-11-09
申请人： Shikha SHAH
发明人： Shikha SHAH
CPC分类号： D01G11/00 , D01G1/10 , D01G9/00 , D01G13/00 , D06M10/02 , D06M16/003 , D01G5/00 , D21B1/02 , D10B2201/00 , D06M2101/06
摘要： A method 100 for processing fibrous matter from a waste material involves obtaining 101 the waste material, trimming 102 the waste material, pre-treating 104, second mechanical treatment 106, washing 108, first chemical treatment 110 with an enzyme and water solution, draining 112 the enzyme and water solution, heating 114 to obtain a fiber cake, providing 116 controlled shockwaves, a second chemical treatment 118, hydro-extracting 120 fiber cake, opening 122 the fiber cake, drying 124, pre-conditioning and softening 126, mechanically treating and segregating 128, softening 129, processing 130 to obtain a sliver and spinning 132 the sliver to obtain a product.
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2.发明授权公开(公告)号：US11767403B2
公开(公告)日：2023-09-26
申请号：US16722297
申请日：2019-12-20
发明人： Yanhong Feng , Hang Cheng , Bo Lei , Xinliang Zou
CPC分类号： C08J3/18 , D21B1/021 , C08J2397/02
摘要： The present disclosure relates to a method for controlling thermoplasticity and toughness of a redox-modified plant fiber, comprising following steps: (1) pretreating a plant fiber; (2) obtaining an oxidation-modified plant fiber by adding an oxidant solution, then filtering, and washing; and obtaining the redox-modified plant fiber by adding a reductant solution, then filtering, and washing; and (3) fully mixing a plasticizer with the redox-modified plant fiber; the plasticizer being a hydroxyl plasticizer, an ionic liquid plasticizer, a deep eutectic solvent, an ester plasticizer, an amine plasticizer, a glycidyl plasticizer, or an inorganic salt plasticizer. The method according to the present disclosure can improve the toughness of the redox-modified plant fiber material, reduce the processing temperature of the plant fiber material, and broaden the processing window of the plant fiber material.
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公开(公告)号：US20230265609A1
公开(公告)日：2023-08-24
申请号：US18098490
申请日：2023-01-18
申请人： GPCP IP Holdings LLC
发明人： Jeffrey A. Lee , Kevin M. Holtman
CPC分类号： D21B1/026 , D21C9/1068 , D21C9/1005 , D21C9/163 , D21C3/026 , D21H11/02
摘要： A method of producing high yield chemical cellulosic pulp includes: (a) chemically pulping wood chips to separate lignin and liberate cellulosic fibers from the wood chips to generate a cellulosic pulp; (b) washing and screening the pulp of step (a); (c) pre-treating the washed pulp with oxygen; (d) optionally washing the treated pulp of step (c); (e) bleaching the pre-treated pulp in an extended duration oxidative bleaching stage; (f) optionally washing the bleached pulp of step (e); and (g) optionally further oxidatively or reductively bleaching the bleached pulp in a shorter duration bleaching stage, wherein the bleached pulp is produced at a yield of greater than 60% based on the weight of the pulped wood chips (dry basis).
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公开(公告)号：US20230256411A1
公开(公告)日：2023-08-17
申请号：US18008858
申请日：2021-05-10
申请人： VALMET AB
CPC分类号： B01J19/20 , B65G33/24 , B65G45/005 , C10L5/40 , D21B1/02 , D21C1/02 , C12P2201/00
摘要： A pre-hydrolysis pressure vessel system includes; a material inlet for receiving biomass material to be treated in the pre-hydrolysis pressure vessel system and a material outlet for expelling treated biomass material out from the pre-hydrolysis pressure vessel system; a transport screw arrangement including a transport screw provided inside an enclosing housing of the transport screw arrangement, said transport screw being configured for transporting biomass material through the enclosing housing towards the material outlet of the pre-hydrolysis pressure vessel system. The enclosing housing includes a cleaning arrangement that includes: at least one elongated fluid channel positioned in connection with an inner wall of the enclosing housing and wherein said at least one elongated fluid channel comprises a number of fluid outlets, and at least one cleaning fluid inlet which is provided through the enclosing housing in fluid connection with the at least one fluid channel.
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公开(公告)号：US11724414B2
公开(公告)日：2023-08-15
申请号：US16048605
申请日：2018-07-30
发明人： Yoichi Miyasaka
摘要： A defibrated material manufacturing device is configured to defibrate a feedstock of clumps of shreds containing fiber into defibrated material. The defibrated material manufacturing device has a removal device, a metering device, storage device, and a defibrator. The removal device is configured to remove at least a part of foreign matter contained in the feedstock. The metering device is configured to measure the feedstock that has passed the removal device. The storage device is configured to store a measured feedstock measured by the metering device. The defibrator is configured to defibrate the measured feedstock supplied from the storage device into the defibrated material.
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公开(公告)号：US11673172B2
公开(公告)日：2023-06-13
申请号：US16760107
申请日：2018-07-26
申请人： Unicharm Corporation
摘要： Provided is a method that, when pulp fibers are recovered from used absorbent articles that have been put into collection bags, makes it possible to safely and sanitarily crush the used absorbent articles while suppressing costs. A method for recovering pulp fibers from used absorbent articles, the method comprising: a crushing step (S12) in which collection bags (A) in which used absorbent articles have been sealed are put into a container (65), the collection bags in the container are transferred to a crushing device (12) that communicates with the container, and, bag by bag, the crushing device crushes the used absorbent articles in the collections bags in a deactivating aqueous solution; and a separation step (S13) in which the pulp fibers, a highly water-absorbent polymer, and the deactivating aqueous solution are separated from the crushed product and deactivating aqueous solution obtained in the crushing step.
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公开(公告)号：US20230124761A1
公开(公告)日：2023-04-20
申请号：US18066119
申请日：2022-12-14
申请人： EVRNU, SPC
发明人： Stacy Flynn , Christopher Stanev
IPC分类号： C08J11/10 , C08J11/08 , D01F11/08 , D01F11/02 , D21C5/00 , D21C3/20 , C08J11/16 , D21C3/22 , D21C9/00 , D21C1/02 , D21C9/10 , C08J11/18 , D21B1/02
摘要： Methods and systems of the present invention use mixed textile feedstock, which may include post-consumer waste garments, scrap fabric and/or other textile materials as a raw feed material to produce isolated cellulose and other isolated molecules having desirable properties that can be used and be used in the textile and apparel industries, and in other industries. A multi-stage process is provided, in which mixed textile feed material is subjected to one or more pretreatment stages, followed by at least two pulping treatments for isolating cellulose molecules and other molecular constituents, such as polyester. The isolated cellulose and polyester molecules may be used in a variety of downstream applications. In one application, isolated cellulose and polyester molecules are extruded to provide regenerated cellulose fibers and regenerated polyester fibers having desirable (and selectable) properties that are usable in various industrial applications, including textile production.
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公开(公告)号：US20230089779A1
公开(公告)日：2023-03-23
申请号：US17947091
申请日：2022-09-17
发明人： PEI-JEN WU
摘要： The present invention provides a fiber raw material processing system and its operation method. The fiber raw material processing system is composed of a cutting module, a bulk pulping module, a salt slurry processing module, a pressure screen, a separation module, an inclined screen module, and an extrusion module and a recycling module, which are connected in series. The operating method of the fiber raw material processing system is to process absorptive articles such as diapers or sanitary napkins, etc., which are retained and made into fluff fiber raw materials through the purification and separation steps performed by the modules of the fiber raw material processing system.
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公开(公告)号：US20230061371A1
公开(公告)日：2023-03-02
申请号：US17802051
申请日：2021-02-26
申请人： FIBERBOARD GMBH
摘要： The disclosure relates to a method for reducing volatile organic compounds (VOC) from wood chips for wood fibre production in a processing system, at least comprising the following consecutive steps: a first thermal treatment of the wood chips in a first thermal treatment device, which is designed to receive VOC-containing waste gases; cleaning the wood chips in a washing device; a second thermal treatment of the wood chips in a second thermal treatment device, which is designed to receive and separate VOC-containing waste gases; digesting the wood chips in a digester, which is designed to receive and separate VOC-containing waste gases; and crushing the wood chips in a refiner, which is designed to separate VOC-containing waste gases. This allows for an efficient, and thus energy-optimised or environmentally friendly and therefore also cost-optimised reduction of volatile organic compounds from wood chips.
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公开(公告)号：US20230060430A1
公开(公告)日：2023-03-02
申请号：US17982353
申请日：2022-11-07
申请人： Re: NewCell AB
摘要： There is provided a method for separation of fibers in for instance recycled textile, starting with a mixture comprising cellulose fibers and non-cellulose fibers and then reducing the cellulose chain length of the cellulose fibers so that the limiting viscosity number determined according to ISO 5351 is in the interval 200-900 ml/g, mechanically breaking agglomerates of fibers into smaller pieces, adjusting the concentration of fibers to 0.1-4 wt %, and subjecting the mixture to flotation to remove the non-cellulose fibers. Non-cellulosic fibers such as synthetic fibers can be removed very specifically without or essentially without removing cellulose fibers in the mixture. This gives a very high degree of removal and simultaneously the yield is kept high because no or only few cellulose fibers are removed.
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