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1. WO1997026408 - METHOD FOR MARKING PAPER AND APPARATUS FOR DETECTED MARKED PAPER

Publication Number WO/1997/026408
Publication Date 24.07.1997
International Application No. PCT/FI1997/000025
International Filing Date 17.01.1997
Chapter 2 Demand Filed 15.08.1997
IPC
D21B 1/02 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1Fibrous raw materials or their mechanical treatment
02Pretreatment of the raw materials by physical or chemical means
D21C 5/02 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5Other processes for obtaining cellulose, e.g. cooking cotton linters
02Working-up waste paper
D21H 17/67 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63Inorganic compounds
67Water-insoluble compounds, e.g. fillers or pigments
D21H 21/14 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
21Non-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
14characterised by function or properties in or on the paper
D21H 23/50 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
22Addition to the formed paper
50Spraying or projecting
CPC
D21B 1/028
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1Fibrous raw materials or their mechanical treatment
02Pretreatment of the raw materials by chemical or physical means
026Separating fibrous materials from waste
028by dry methods
D21C 5/02
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
5Other processes for obtaining cellulose, e.g. cooking cotton linters
02Working-up waste paper
D21H 17/67
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
63Inorganic compounds
67Water-insoluble compounds, e.g. fillers, pigments
D21H 21/14
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
21Non-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
14characterised by function or properties in or on the paper
D21H 23/50
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
22Addition to the formed paper
50Spraying or projecting
Y02W 30/64
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
30Technologies for solid waste management
50Reuse, recycling or recovery technologies
64Paper recycling
Applicants
  • VALTION TEKNILLINEN TUTKIMUSKESKUS [FI]/[FI] (AllExceptUS)
  • ROSENBERG, Rolf [FI]/[FI] (UsOnly)
Inventors
  • ROSENBERG, Rolf
Agents
  • PAPULA REIN LAHTELA OY
Priority Data
96023917.01.1996FI
Publication Language English (EN)
Filing Language Finnish (FI)
Designated States
Title
(EN) METHOD FOR MARKING PAPER AND APPARATUS FOR DETECTED MARKED PAPER
(FR) PROCEDE DE MARQUAGE DE PAPIER ET APPAREIL DE DETECTION DE PAPIER MARQUE
Abstract
(EN)
The invention relates to a procedure for the marking of paper and detection of marked paper for sorting when the paper is recycled, in which procedure a chemical tracer corresponding to the number of times the pulp has been used in the papermaking process is introduced into paper to be marked, and the tracer is detected in reclaimed paper by means of a detector sensitive to the tracer to allow reclaimed paper to be sorted for recycling according to the number of times it has been used.
(FR)
L'invention concerne un procédé de marquage de papier et de détection de papier marqué destiné à effectuer un triage lorsque le papier est recyclé, procédé dans lequel un traceur chimique correspondant au nombre de fois que la pâte à papier a été utilisée dans le processus de production de papier est introduit dans le papier à marquer, et le traceur est détecté dans du papier de récupération au moyen d'un détecteur sensible audit traceur permettant le triage de papier de récupération destiné au recyclage, selon le nombre de fois qu'il a été utilisé.
Also published as
Latest bibliographic data on file with the International Bureau