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公开(公告)号：US20230140638A1
公开(公告)日：2023-05-04
申请号：US17910401
申请日：2021-03-17
申请人： KEMIRA OYJ
发明人： Chen LU
摘要： The present disclosure generally relates to glyoxalated polyacrylamide (GPAM) products, compositions comprising GPAM products, and methods of use thereof, particularly in the paper industry. Moreover, the present disclosure generally pertains to cationic GPAM products, compositions comprising, and use thereof in papermaking applications and in products such as paper-based products, wherein the cationic GPAM products may provide increased wet and/or dry strength to the paper-based product and wherein such GPAMs optionally can be stored and transported to a papermaking site without the addition of large volumes of aqueous carriers.
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公开(公告)号：US20230138993A1
公开(公告)日：2023-05-04
申请号：US17944874
申请日：2022-09-14
申请人： Footprint LLC
发明人： Yoke Dou Chung , Yiyun Zhang , Chee Lee
IPC分类号： D21J3/10 , D21H21/20 , D21H21/16 , D21H17/28 , D21H17/17 , D21H11/14 , D21H11/02 , A47G19/22
摘要： A fiber-based, plastic-free drinking cup is formed by providing a fiber-based slurry comprising a hydrophobic additive and a strength additive, then forming a drinking cup component by compressing and drying the fiber-based slurry in a form press assembly having an internal shape characterized by a conic frustum. The fiber-based slurry may include a dry pulp mixture of virgin fiber and recycled fiber, the hydrophobic additive is 1.0-10.0% of the dry pulp weight, and the strength additive is 1.0-10.0% of the dry pulp weight. In particular, the fiber-based slurry may include about 50% bleached hardwood, about 50% bleached softwood, about 2.5% strength additive, and about 3.5% hydrophobic additive by dry pulp weight.
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公开(公告)号：US20230135892A1
公开(公告)日：2023-05-04
申请号：US17910402
申请日：2021-03-17
申请人： KEMIRA OYJ
IPC分类号： D21H21/20 , C08L33/26 , C08F8/28 , C08F220/56 , D21H17/45
摘要： The present disclosure generally relates to glyoxalated polyacrylamide (GPAM) compositions, methods of preparation and methods of use thereof, particularly in the paper industry. Moreover, the present disclosure generally pertains to cationic GPAM compositions, methods of preparation and methods of use thereof in papermaking applications and in products such as paper-based products, wherein the cationic GPAM compositions may provide increased wet and/or dry strength to the paper-based products, and wherein such cationic GPAM compositions optionally require a reduced volume of an aqueous carrier for storage or transport compared to a volume of an aqueous carrier needed for conventional GPAMs used in papermaking.
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公开(公告)号：US20230135305A1
公开(公告)日：2023-05-04
申请号：US17802279
申请日：2021-02-26
发明人： Henning Röttger
IPC分类号： C11D17/04 , D04H1/26 , A47K10/42 , D04H1/4258 , D04H1/587 , D21H13/08 , D21H17/28 , D21H21/36
摘要： The present invention relates to a dry wipe, a biodegradable packaging containing the dry wipe, an arrangement comprising the dry wipe and a dispenser container, and a process for providing a wet wipe. The dry wipe comprises a wipe substrate impregnated with at least one additive to be activated by addition of water, wherein the at least one additive is selected from the group consisting of a biocide, a surfactant and a care product, wherein the wipe substrate is configured for allowing a distribution of liquid, even when the dry wipe is stacked in a dispenser container.
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公开(公告)号：US20230135217A1
公开(公告)日：2023-05-04
申请号：US17995447
申请日：2021-04-14
申请人： Stora Enso OYJ
摘要： The present invention relates to a method for manufacturing a multilayer film comprising highly refined cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly refined cellulose fibers on a first wire; b) partially dewatering the first wet web to obtain a first partially dewatered web; c) forming a second wet web y applying a foamed second pulp suspension comprising highly refined cellulose fibers and a foaming agent on a second wire; d) partially dewatering the foamed second wet web to obtain a second partially dewatered web; e) joining the first and second partially dewatered web to obtain a multilayer web; and f) further dewatering, and optionally drying, the multilayer web to obtain a multilayer film comprising highly refined cellulose fibers.
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公开(公告)号：US20230133654A1
公开(公告)日：2023-05-04
申请号：US17912651
申请日：2021-03-22
申请人： METGEN OY
发明人： Liji Sobhana SELEENMARY SOBHANADHAS , Tom Christian LUNDIN , Antoine Patrice Noël MIALON , Tanja Pauliina SALORANTA
摘要： The invention is in the field of papermaking. It provides methods for improving the compressive strength of paper and board by improving the moisture resistance of paper and board. The invention also provides paper and board with an improved compressive strength as well as a composition for improving the compressive strength of paper and board. More in particular, the invention relates to a process for the manufacture of paper wherein the process comprises a wet phase and a dry phase, wherein an enzymatically oxidized lignin is added in the wet phase.
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公开(公告)号：US11638504B2
公开(公告)日：2023-05-02
申请号：US17190019
申请日：2021-03-02
申请人： GPCP IP Holdings LLC
摘要： The present disclosure provides paper wraps, paper wrapped products, such as rolled bath tissue, paper towel products, or bundles of rolled bath tissue or paper towels, and methods for covering a product or bundled products in a paper wrap. For example, printed paper wraps and their use are described, wherein the printed paper wraps comprise at least one heat-sealable adhesive that may be applied in varying locations, coverage levels, and patterns comprising different seal strengths, which may be sealed using heat and/or pressure external to the products for packaging and protective purposes.
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公开(公告)号：US20230131438A1
公开(公告)日：2023-04-27
申请号：US17996940
申请日：2021-05-06
申请人： Stora Enso OYJ
发明人： Kaj Backfolk , Isto Heiskanen , Katja Lyytikäinen
摘要： The present invention is directed to a coated paper substrate that is particularly suitable for metallization and other nano-coatings that provide barrier properties and are applied using vacuum deposition techniques. The invention is also directed to a process for preparing the coated paper substrate. The invention is also directed to a packaging material comprising the coated paper substrate.
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公开(公告)号：US11634863B2
公开(公告)日：2023-04-25
申请号：US16754556
申请日：2018-10-11
摘要： An improved market pulp and process for making the same by adding a composite material are described. The composite material includes cellulose nanocrystals, cellulose nanofibers, or another high aspect ratio, high surface area cellulose material (or a starch, or both) and a crosslinking compound that crosslinks a portion of the surface hydroxyl groups to form a 3-D matrix. Adding the composite material to market pulp has been shown to improve the strength of twice-dried paper products, made from such an enhanced market pulp. By crosslinking a portion of the surface hydroxyl groups in the market pulp to form a 3-D matrix, a first drying step may be accomplished without loss of benefits afforded when the market pulp is later re-pulped to make a paper product.
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10.发明申请公开(公告)号：US20230112349A1
公开(公告)日：2023-04-13
申请号：US17914254
申请日：2021-03-23
申请人： CELLULOTECH INC
发明人： Daniel SAMAIN
IPC分类号： B01D39/18 , B32B7/14 , B32B29/00 , B32B29/06 , A62B23/02 , A61L9/014 , D21H11/20 , D21H27/08 , B32B37/18 , B32B37/12
摘要： The invention relates to a filtering material permeable to air and impermeable to oral, nasal and/or ocular human liquid aqueous excretions, comprising at least one bundle, referred to as a hydrophobic bundle, of at least two hydrophobic sheets which are superimposed and each formed by porous paper, having a gsm substance less than 30 g/m2, each hydrophobic sheet being formed by cellulose fibres, referred to as cross-linked cellulose fibres, which are connected to each other by hydrogen bonds and by covalent bonds which are formed with at least one group of cross-linking atoms, characterised in that at least some of the hydroxyls of the cross-linked cellulose fibres which are not engaged in hydrogen bonds and which are accessible to the gases form a covalent bond with an acyl group with a hydrophobic chain.
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