公开(公告)号：WO2022144682A1

公开(公告)日：2022-07-07

申请号：PCT/IB2021/061939

申请日：2021-12-17

申请人： STORA ENSO OYJ

发明人： PENG, Frank ,  HEISKANEN, Isto ,  BACKFOLK, Kaj ,  KAZEMAHVAZI, Sohrab

IPC分类号： D21J7/00 ,  C09D101/02 ,  D21H11/18 ,  D21J3/00 ,  D21J5/00 ,  C08L1/02 ,  D21H19/12 ,  D21H21/18

摘要： The invention discloses a method for producing a three-dimensional molded article from cellulose fibers, comprising the steps of: -providing a pulp molding composition; -molding a three-dimensional precursor structure from said composition wherein said structure comprises a dry content between 15-80wt%; -providing an aqueous suspension comprising microfibrillated cellulose; -applying the aqueous suspension onto at least one face of said precursor structure to create a surface barrier layer on said structure; and -dewatering and drying said molded precursor structure under elevated temperature >150°C to a dry content of ≥88wt%, preferably ≥94wt%, more preferably ≥96% to achieve the three- dimensional molded article comprising a surface barrier layer.

公开(公告)号：WO2022129653A1

公开(公告)日：2022-06-23

申请号：PCT/ES2021/070778

申请日：2021-10-27

申请人： CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC)

发明人： GÓMEZ HERNÁNDEZ, Nuria ,  VERGARA ALARCÓN, Priscilla Valeska ,  VILLAR GUTIÉRREZ, Juan Carlos

IPC分类号： D21H21/18 ,  D21H27/10 ,  D21C3/20 ,  D21H21/34 ,  D21H17/24 ,  C13K1/00 ,  C08L97/00 ,  C08L97/02 ,  D21H17/23

摘要： La presente invención es un procedimiento para la obtención de un papel de embalaje reforzado que comprende la aplicación de un licor residual de pretratamiento de restos lignocelulósicos con alcohol-agua en el papel de embalaje y su posterior secado. El licor residual comprende una fracción sólida en suspensión de 1 - 70% en peso / volumen respecto del total, que comprende lignina y complejos lignina- carbohidratos; y una fracción líquida de 30 - 99 % en peso / volumen respecto del total, que contiene glucosa entre 0,04 y 2,07 g/L, xilosa entre 0,31 y 14,57 g/L, arabinosa entre 0,09 y 3,46 g/L, ácido acético entre 0,083 y 12,40 g/L, furfural entre 0,004 y 8,73 g/L. El procedimiento consigue mejorar la eficiencia de los licores residuales de pasta de celulosa en el proceso de reforzamiento de un papel de embalaje, y es válido para todo tipo de papel o cartón crudo.

公开(公告)号：WO2022117921A1

公开(公告)日：2022-06-09

申请号：PCT/FI2021/050831

申请日：2021-12-01

申请人： KEMIRA OYJ

发明人： HIETANIEMI, Matti ,  KARPPI, Asko ,  KORHONEN, Markus ,  KVIST, Markus

IPC分类号： D21H17/26 ,  D21H17/27 ,  D21H17/28 ,  D21H17/37 ,  D21H21/18 ,  D21H21/20 ,  D21H11/14

摘要： The invention relates to a chemical treatment system for manufacture of paper,board or the like and to a method employing it. The system comprises a firstcomponent, which is a glyoxylated polyacrylamide having a net cationic charge5density and obtained by glyoxylation of a cationic polyacrylamide base polymerhaving a weight average molecular weight MW in a range of 30 000 – 500 000 g/mol.The system further comprises a second component, which comprises a mixture ofat least a high-amylopectin starch, and an anionic first polymer, which has a weightaverage molecular weight MW >200 000 g/mol. The second component has a net0cationic charge density in a range from 0.05 meq/g to 0.9 meq/g, when measuredat pH 2.8, and a net anionic charge density in a range from -2 meq/g to -0.1 meq/g,when measured at pH 7.

公开(公告)号：WO2022084835A1

公开(公告)日：2022-04-28

申请号：PCT/IB2021/059591

申请日：2021-10-19

申请人： STORA ENSO OYJ

发明人： LJUNGQVIST, Carl-Henrik

IPC分类号： D21H19/84 ,  D21H21/16 ,  D21H21/18 ,  D21H27/10 ,  D21H21/20 ,  B65D71/40 ,  B65D65/42

摘要： The invention relates to a coated paperboard (10) for beverage container carriers (30) comprising: a paperboard substrate (12), a dispersion coating layer (18, 20) on each side (14, 16) of the paperboard substrate (12), wherein the paperboard substrate (12) comprises wet strength agents in an amount in a range from ≥ 0 wt% to ≤ 0.05 wt%, based on the dry solid content of the substrate (12) and sizing agents for making the paperboard (12) substrate more hydrophobic, wherein the sizing agents are present in an amount of ≥ 0,15 wt%, especially in a range from ≥ 0,15 wt% to ≤ 0.5 wt%, based on the dry solid content of the substrate (12). The invention further relates to a beverage container carrier (30) comprising or being made from the aforementioned coated paperboard (10).

公开(公告)号：WO2022010959A1

公开(公告)日：2022-01-13

申请号：PCT/US2021/040605

申请日：2021-07-07

申请人： ECOLAB USA INC.

发明人： JORDAN, David, Steven ,  HUANG, Heqing ,  CHENG, Weiguo ,  WEI, Mingli ,  LIU, Mei ,  GRANGER, William, Arthur

IPC分类号： D21H17/37 ,  D21H17/42 ,  D21H17/44 ,  D21H21/18 ,  D21H23/28 ,  D21H23/50 ,  D21H27/30 ,  D21H27/32

摘要： The present disclosure provides methods and compositions for strengthening paper. The methods may include a step of spraying an anionic polymer onto a paper sheet to increase the strength of the paper sheet. The anionic polymer may have amino groups, amide groups, or a combination of amino groups and amide groups. These groups may be functionalized with an aldehyde. Methods may also include a step of adding a wet end composition to a wet end of the papermaking process.

公开(公告)号：WO2021166898A1

公开(公告)日：2021-08-26

申请号：PCT/JP2021/005677

申请日：2021-02-16

申请人： 星光ＰＭＣ株式会社

发明人： 山本　慎也 ,  久米田　和寛 ,  茨木　英夫

IPC分类号： D21H21/18 ,  D21H17/37

摘要： 本発明は、以下の（Ａ）成分及び（Ｂ）成分を含有する紙力増強剤であって、前記紙力増強剤に含有するＩＣＰ分析により算出された１価又は２価の金属イオン（ただし、前記（Ａ）成分におけるカルボキシ基の対イオンである金属イオンを除く）の、カルボキシ基を有する水溶性多糖類（Ａ）成分及び（メタ）アクリルアミド５５～９９モル％、カチオン性モノマー０．５～２０モル％、アニオン性モノマー０．５～１５モル％、その他モノマー０～１０モル％の重合物（Ｂ）成分の合計に対する質量比が０．０２～０．２５である紙力増強剤が紙力増強効果に優れることを見出した。

公开(公告)号：WO2021018347A1

公开(公告)日：2021-02-04

申请号：PCT/DE2020/100637

申请日：2020-07-21

申请人： SCHAEFFLER TECHNOLOGIES AG & CO. KG

发明人： STEINMETZ, Stefan ,  MATTERN, Gregor

IPC分类号： D21H17/48 ,  D21H21/18 ,  D21H17/67 ,  D21H17/70 ,  D21H25/04 ,  D21H27/14

摘要： Die Erfindung betrifft Verfahren zur Herstellung eines Nasslaufreibpapiers und ein Nasslaufpapier, welches zumindest einen Faseranteil aus zumindest einer Fasersorte, einen Anteil zumindest eines Füllstoffs und einen Anteil eines Binders auf Phenolharzbasis enthält. Zur Vereinfachung der Herstellung und Verbesserung der Eigenschaften des Nasslaufreibpapiers werden der Faseranteil, der Füllstoffanteil und der als Phenolat gelöste Binderanteil gemeinsam in einem Papierherstellungsprozess zu dem Nasslaufreibpapier verarbeitet.

公开(公告)号：WO2021014206A1

公开(公告)日：2021-01-28

申请号：PCT/IB2020/000582

申请日：2020-07-14

申请人： FIBERLEAN TECHNOLOGIES LIMITED

发明人： TAYLOR, Lewis ,  SKUSE, David ,  PHIPPS, Jon

IPC分类号： D21C9/00 ,  D21B1/30 ,  D21D1/20 ,  D21H11/18 ,  D21H17/67 ,  D21H17/68 ,  D21H21/18 ,  D21H21/50 ,  D21C9/007 ,  D21H17/675

摘要： Methods for preparing aqueous suspensions comprising microfibrillated cellulose, and optionally inorganic particulate material, with increased tensile properties, and methods for selecting a fibrous substrate comprising cellulose for preparation of microfibrillated cellulose having increased tensile properties.

公开(公告)号：WO2020205905A1

公开(公告)日：2020-10-08

申请号：PCT/US2020/026064

申请日：2020-04-01

申请人： KEMIRA OYJ ,  KEMIRA CHEMICALS INC.

发明人： BUGG, George Gordon

IPC分类号： D21H17/63 ,  D21H17/66 ,  D21H17/00 ,  D21H19/84 ,  D21H21/18

摘要： The embodiments of the present invention generally relate to i) paper and paperboard or molded products with improved abrasion resistance and/or taber stiffness, ii) methods for making paper and paperboard or molded products with improved abrasion resistance and/or taber stiffness, and iii) methods for improving abrasion resistance and/or taber stiffness paper and paperboard or molded products, by using a metal chelate, such as, Ammonium Zirconium Carbonate (AZC) or Potassium Zirconium Carbonate (PZC). Further advantages of the embodiments of the present invention will be readily apparent to the reader from this disclosure.

公开(公告)号：WO2020182977A1

公开(公告)日：2020-09-17

申请号：PCT/EP2020/056774

申请日：2020-03-13

申请人： S.P.C.M. SA

发明人： FAUCHER, Gatien ,  FOUGEROUSE, Damien ,  HUND, René

IPC分类号： D21H17/37 ,  D21H17/24 ,  D21H17/66 ,  D21H17/00 ,  D21H21/18

摘要： Ce procédé de traitement de la surface du papier, et/ou au moins une de ses couches, comprend les étapes successives suivantes : i) Fournir une suspension aqueuse S de polysaccharide, ii) Fournir une dispersion aqueuse D comprenant (a) des particules d'au moins un polymère hydrogonflable anionique P et (b) au moins un composé choisi parmi un sel minéral, un sel organique, un polymère organique dispersant et leurs mélanges, iii) Mélanger la suspension S et de la dispersion D, pour obtenir un mélange M, iv) Appliquer le mélange M en surface du papier, et/ou de ses couches.