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1. (WO2017032927) A METHOD FOR TREATING STARCH IN PULP, PAPER AND BOARD MAKING PROCESSES
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Pub. No.: WO/2017/032927 International Application No.: PCT/FI2016/050583
Publication Date: 02.03.2017 International Filing Date: 26.08.2016
IPC:
D21C 5/00 (2006.01) ,D21C 5/02 (2006.01) ,D21H 11/14 (2006.01) ,D21H 21/36 (2006.01)
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5
Other processes for obtaining cellulose, e.g. cooking cotton linters
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5
Other processes for obtaining cellulose, e.g. cooking cotton linters
02
Working-up waste paper
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
11
Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
14
Secondary fibres
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
21
Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
14
characterised by function or properties in or on the paper
36
Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
Applicants:
KEMIRA OYJ [FI/FI]; Porkkalankatu 3 00180 Helsinki, FI
Inventors:
HIETANIEMI, Matti; FI
EKMAN, Jaakko; FI
KARPPI, Asko; FI
KOLARI, Marko; FI
Agent:
BERGGREN OY; P.O. Box 99 20521 Turku, FI
Priority Data:
2015561227.08.2015FI
Title (EN) A METHOD FOR TREATING STARCH IN PULP, PAPER AND BOARD MAKING PROCESSES
(FR) PROCÉDÉ DE TRAITEMENT DE L'AMIDON DANS LA PÂTE À PAPIER, PROCESSUS DE FABRICATION DE PAPIER ET DE CARTON
Abstract:
(EN) The invention relates to a method for treating starch in pulp, paper and board making processes, in which processes recycled fibre material is used as raw material wherein the recycled fibre material is pulped in a pulper and obtaining a pulp flow comprising an aqueous phase and at least recycled fibres and starch dispersed in the aqueous phase. The method comprising the following steps: - adding amylase enzyme inhibitor and/or at least one biocide to pulp flow or to an aqueous process flow comprising starch for preventing starch degradation, and - adding an amphoteric polymer obtained by copolymerisation of (meth)acrylamide with cationic and anionic monomers to pulp flow or to an aqueous process flow comprising starch for binding starch to the fibres.
(FR) L'invention concerne un procédé de traitement de l'amidon dans la pâte à papier, des processus de fabrication de papier et de carton, processus au cours desquels un matériau fibreux recyclé est utilisé en tant que matière première, le matériau fibreux recyclé étant réduit en pâte dans un triturateur, pour obtenir un flux de pâte à papier comprenant une phase aqueuse et au moins des fibres recyclées et de l'amidon dispersé dans la phase aqueuse. Le procédé comprend les étapes suivantes consistant à : - ajouter un inhibiteur d'amylase et/ou au moins un biocide à un flux de pâte à papier ou à un flux de traitement aqueux comprenant de l'amidon pour empêcher la décomposition de l'amidon; et - ajouter un polymère amphotère obtenu par copolymérisation de (méth)acrylamide avec des monomères cationiques et anioniques à un flux de pâte à papier ou à un flux de traitement aqueux comprenant de l'amidon pour la liaison de l'amidon aux fibres.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)