FI98744C - Method of marking paper and device for detecting marked paper - Google Patents
Method of marking paper and device for detecting marked paper Download PDFInfo
- Publication number
- FI98744C FI98744C FI960239A FI960239A FI98744C FI 98744 C FI98744 C FI 98744C FI 960239 A FI960239 A FI 960239A FI 960239 A FI960239 A FI 960239A FI 98744 C FI98744 C FI 98744C
- Authority
- FI
- Finland
- Prior art keywords
- paper
- tracer
- compound
- labeled
- marking
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/026—Separating fibrous materials from waste
- D21B1/028—Separating fibrous materials from waste by dry methods
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP 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
- D21H21/00—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
- D21H21/14—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 characterised by function or properties in or on the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Description
♦ 98744♦ 98744
MENETELMÄ PAPERIN MERKKAAMISEKSI JA LAITTEISTO MERKATUN PAPERIN DETEKTOIMISEKSIMETHOD OF MARKING PAPER AND EQUIPMENT FOR DETECTING MARKED PAPER
Keksinnön kohteena on menetelmä paperin merkkaamiseksi ja merkatun paperin detektoimiseksi paperin 5 lajittelua varten sen uudelleenkäytön yhteydessä.The invention relates to a method for marking paper and detecting marked paper for sorting paper 5 in connection with its reuse.
Edelleen keksinnön kohteena on laitteisto merkatun paperin detektoimiseksi, kuten on määritelty patenttivaatimuksen 10 johdanto-osassa.The invention further relates to an apparatus for detecting labeled paper as defined in the preamble of claim 10.
Viime aikoina paperin kierrätystä ja uudel-10 leenkäyttöä on pyritty tehostamaan voimakkaasti. Uudelleenkäytössä keräyspaperi seostetaan, mahdollisen siistauksen jälkeen, paperimassaan halutussa suhteessa ja käytetään uudelleen paperiraaka-aineena. Paperilla tarkoitetaan tässä yhteydessä pääasiassa lignosellu-15 loosaperustaisesta raaka-aineesta paperi- tai karton-kikoneella valmistettavia paperi- ja kartonkilaatuja. Käytettäessä paperi uudelleen paperikuidut haurastuvat ja lyhenevät. Näin ollen paperin valmistajan kannalta on ensiarvoisen tärkeää tietää, miten monta kertaa ao.Recently, significant efforts have been made to increase the efficiency of paper recycling and reuse. In reuse, the recovered paper is blended, after possible deinking, into the pulp in the desired ratio and reused as a paper raw material. In this context, paper refers mainly to grades of paper and board made from a lignocellulosic-15-based raw material on a paper or board machine. When paper is reused, the paper fibers become brittle and shortened. Therefore, it is of paramount importance for the paper manufacturer to know how many times ao.
20 paperiraaka-aine on käytetty uudelleen aiemmin. Mikäli paperiraaka-aine on käytetty useamman kerran jo aiemmin, kuidut ovat usein niin lyhyitä ja huonolaatuisia, että raaka-aine ei kelpaa uudelleenkäyttöön ja raaka-aine on poltettava tai hävitettävä muulla tavoin.20 paper raw materials have been reused in the past. If the paper raw material has been used several times before, the fibers are often so short and of poor quality that the raw material is unsuitable for reuse and the raw material must be incinerated or otherwise disposed of.
25 Nykyisin paperin lajittelu uudelleenkäyttöä varten tapahtuu käytännöllisesti katsoen yksinomaan käsin, mikä nostaa keräyspaperin käsittely- ja käyttökustannuksia olennaisesti. Syynä tähän on se, että nykyisin ei yksinkertaisesti tunneta minkäänlaista käyt-30 tökelpoista menetelmää jätepaperin merkkaamiseksi ja merkatun paperin detektoimiseksi jätepaperin mekaanista lajittelua varten sen uudelleenkäytön yhteydessä.25 At present, the sorting of paper for re-use is practically done exclusively by hand, which substantially increases the cost of handling and using recovered paper. The reason for this is that no useful method for marking waste paper and detecting labeled paper for mechanical sorting of waste paper in connection with its reuse is currently simply not known.
Esillä olevan keksinnön tarkoituksena on poistaa edellä esitetyt epäkohdat. Erityisesti keksin-35 nön tarkoituksena on tuoda esiin uusi menetelmä pape rin merkkaamiseksi ja merkatun paperin detektoimiseksi paperin lajittelua varten sen uudelleenkäytön yhtey 98744 2 dessä siten, että paperin merkkaaminen ja detektointi voidaan toteuttaa mekaanisesti käsin koskematta on-line-menetelmällä.It is an object of the present invention to obviate the above drawbacks. In particular, it is an object of the invention to provide a new method for marking paper and detecting marked paper for sorting paper in connection with its reuse 98744 2 so that the marking and detection of paper can be carried out mechanically without touching by an on-line method.
Keksinnölle tunnusomaisten seikkojen osalta 5 viitataan patenttivaatimuksiin.With respect to the features of the invention, reference is made to the claims.
Keksintö perustuu siihen suoritetuissa tutkimuksissa kehitettyyn perusajatukseen, että merkittävään paperiin pannaan kemiallinen merkkiaine vastaten paperimassan käyttökertaa paperin valmistuksen yhtey-10 dessä. Merkkiaine detektoidaan käytetystä keräyspaperista merkkiaineherkän detektorin avulla keräyspaperin lajittelemiseksi paperin käyttökertojen mukaan sen uudelleenkäyttöä varten. Tällöin, keksinnön ansiosta, keräyspaperista, järjestettynä esim. kuljettimen kul-15 jettamaksi, voidaan määrittää kunkin paperierän tai jopa arkin käyttökertojen lukumäärä detektoidun merkkiaineen perusteella, joka vastaa nimenomaan paperin käyttökertaa. Näin ollen keräyspaperin käyttäjä voi lajitella keräyspaperin esim. detektorin yhteyteen ja 20 tämän ohjaamaksi järjestetyn lajittelijan avulla ja vastaten keräyspaperin käyttökertoja. Käyttökelpoinen ja uudelleen käytettäväksi soveltuva keräyspaperi voidaan johtaa paperinvalmistusprosessiin, kun taas jo monta kertaa käytetty, huonolaatuisempi keräyspaperi 25 voidaan johtaa esim. energiantuotantoon tai kaatopaikalle tai muutoin hävitettäväksi. Keksinnön ansiosta keräyspaperi voidaan täten lajitella halutulla tavalla ja vastaten haluttuja keräyspaperin kriteereitä.The invention is based on the basic idea developed in research carried out that a chemical marker is applied to a significant paper corresponding to the use of the pulp in the manufacture of paper. The tracer is detected from the used recovered paper by means of a tracer-sensitive detector to sort the recovered paper according to the uses of the paper for its reuse. In this case, thanks to the invention, the number of uses of each batch of paper or even a sheet can be determined from the recovered paper, arranged e.g. for conveyor transport, on the basis of the detected tracer, which corresponds exactly to the use of the paper. Thus, the user of the recovered paper can sort the recovered paper, e.g. in connection with a detector and 20 by means of a sorter arranged to be controlled by him and corresponding to the times the recycled paper is used. Recyclable paper that is usable and reusable can be disposed of in the papermaking process, while poorer quality recycled paper 25 that has already been used many times can be disposed of, e.g., for energy production or landfill, or otherwise disposed of. Thanks to the invention, the recovered paper can thus be sorted in the desired manner and meeting the desired recovered paper criteria.
Keksinnön mukaisessa menetelmässä käytettävä 30 merkkiaine sisältää edullisesti metallia ja/tai metal-liyhdistettä, esim. lantanidia ja/tai lantanidiyhdis-tettä. Edelleen merkkiaine voi olla esim. organometal-liyhdistettä. Yleisesti ottaen merkkiaine voi muodostua mistä tahansa merkkiaineesta, joka voidaan panna 35 paperiin sen valmistuksen yhteydessä vastaten kuitu-raaka-aineen käyttökertojen lukumäärää ja joka ei liukene tai poistu muulla tavoin paperista paperin vai- 3 98744 mistusprosessin yhteydessä. Merkkiaine voi koostua.yhdestä yhdisteestä tai se voi sisältää kaksi tai useampia yhdisteitä, joiden suhde merkkiaineessa on vakio. Kemiallinen merkkiaine voidaan lisätä paperiin tai jo-5 honkin paperin raaka-aineeseen, esim. lignoselluloosa-kuitumassaan, paperin täyteaineeseen, pigmenttiin tai yleensä millä tavoin tahansa.The tracer used in the process according to the invention preferably contains a metal and / or a metal compound, e.g. lanthanide and / or a lanthanide compound. Furthermore, the tracer may be, for example, an organometallic compound. In general, the tracer may consist of any tracer that can be applied to the paper during its manufacture corresponding to the number of uses of the fibrous raw material and that does not dissolve or otherwise exit the paper during the papermaking process. The label may consist of a single compound or may contain two or more compounds with a constant ratio of label. The chemical tracer can be added to the paper or to the raw material of the paper, e.g. lignocellulosic pulp, paper filler, pigment or generally in any way.
Valittaessa merkkiainetta on tärkeää, että merkkiaine voidaan detektoida helposti ja nopeasti, 10 so. on-line-menetelmällä, esim. emissiospektrometril-lä. Erityisen edullinen detektointitapa on höyrystää merkkiaine laserilla ja detektoida se emissiospektro-metrillä. Haluttaessa myös muunlaisia merkitsemistapoja ja/tai detektointimenetelmiä ja/tai -laitteita voi-15 daan käyttää.When selecting a tracer, it is important that the tracer can be detected easily and quickly, i.e. by an on-line method, e.g. by emission spectrometry. A particularly preferred method of detection is to vaporize the tracer with a laser and detect it with an emission spectrometer. If desired, other labeling methods and / or detection methods and / or devices may also be used.
Keksintöä selostetaan seuraavassa yksityiskohtaisesti suoritusesimerkkien avulla.The invention is described in detail below by means of exemplary embodiments.
ESIMERKKI 1 20 Paperin valmistaja haluaa tuotevastuusyistä tunnistaa paperinsa missä tahansa tilanteessa. Paperitehtaalla paperia valmistettaessa täyteaineeseen sekoitetaan nitraattimuodossa lantaania 100 μg/g täyteainetta ja samariumia 150 μg/g. Täyteaine lisätään pa-25 periin valmistuksen yhteydessä. Valmis paperi lähetetään asiakkaalle. Myöhemmin paperitehdasta vastaan tehdään reklamaatio, jossa väitetään tehtaan myymän paperin olleen jollain tavalla viallinen. Tehdas pyytää viallisesta tuotteesta näytteen. Näyte analysoi-30 daan laboratoriossa. Siitä määritetään ICP-emissiospektrografilla lantanidien pitoisuudet. Havaitaan La/Sm-suhteen olevan 3,5. Koska merkatun paperin La/Sm-suhde on 0,67, voi tehdas todistaa, että kyseessä ei ole heidän tuotteensa.EXAMPLE 1 20 For reasons of product liability, a paper manufacturer wants to identify his paper in any situation. When making paper at a paper mill, 100 μg / g of lanthanum and 150 μg / g of samarium are mixed into the filler in the nitrate form. The filler is added to the paper during manufacture. The finished paper is sent to the customer. A complaint is later made against the paper mill alleging that the paper sold by the mill was defective in some way. The factory requests a sample of the defective product. The sample is analyzed in the laboratory. The concentrations of lanthanides are determined by ICP emission spectrography. The La / Sm ratio is found to be 3.5. As the La / Sm ratio of the labeled paper is 0.67, the mill can prove that it is not their product.
ESIMERKKI 2EXAMPLE 2
Uusiokuitua käyttävä paperitehdas ilmoittaa 35 98744 4 markkinoinnissaan, että sen kuitukoostumukseltaan määrätynlaiseksi sertifioitu paperi voidaan lajittelun yhteydessä tunnistaa automaattisesti, ja siten erottaa määrättyyn käyttöön. Siten esimerkiksi 10% uusiokuitua 5 sisältävä paperi merkataan siten, että siinä on nitraattina lantaania 100 pg/dm2 ja samariumia 200 μς/είπι2.A paper mill using recycled fiber states in its marketing 35 98744 4 that paper certified to have a specific fiber composition can be automatically identified during sorting and thus separated for a specific use. Thus, for example, paper containing 10% recycled fiber 5 is labeled as containing 100 pg / dm2 of lanthanum and 200 μς / είπι2 of nitrate as nitrate.
20% uusiokuitua sisältävä paperi taas sisältää lantaania 100 μg/clm2 ja samariumia 150 pg/dm2. Kun paperin lajittelijassa on anturina laserherätteinen emissi-10 ospektrografi, pystyy se helposti määrittämään pape reista lantanidien pitoisuudet ja niiden suhteet. Tällä tavalla pystytään automaattisesti erottamaan nämä paperilaadut muista, ei merkatuista papereista, ja toisistaan.Paper containing 20% recycled fiber, on the other hand, contains 100 μg / clm2 of lanthanum and 150 pg / dm2 of samarium. When the paper sorter has a laser-excited emission 10 spectrograph as a sensor, it can easily determine the concentrations of lanthanides and their ratios in the papers. In this way, it is possible to automatically distinguish these grades of paper from other, unlabeled papers, and from each other.
15 Suoritusesimerkit on tarkoitettu ainoastaan havainnollistamaan keksintöä rajoittamatta sitä millään tavoin.The working examples are intended only to illustrate the invention without limiting it in any way.
Claims (14)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI960239A FI98744C (en) | 1996-01-17 | 1996-01-17 | Method of marking paper and device for detecting marked paper |
EP19970901099 EP0876535A1 (en) | 1996-01-17 | 1997-01-17 | Method for marking paper and apparatus for detected marked paper |
PCT/FI1997/000025 WO1997026408A1 (en) | 1996-01-17 | 1997-01-17 | Method for marking paper and apparatus for detected marked paper |
AU14463/97A AU1446397A (en) | 1996-01-17 | 1997-01-17 | Method for marking paper and apparatus for detected marked paper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI960239 | 1996-01-17 | ||
FI960239A FI98744C (en) | 1996-01-17 | 1996-01-17 | Method of marking paper and device for detecting marked paper |
Publications (3)
Publication Number | Publication Date |
---|---|
FI960239A0 FI960239A0 (en) | 1996-01-17 |
FI98744B FI98744B (en) | 1997-04-30 |
FI98744C true FI98744C (en) | 1997-08-11 |
Family
ID=8544930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI960239A FI98744C (en) | 1996-01-17 | 1996-01-17 | Method of marking paper and device for detecting marked paper |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0876535A1 (en) |
AU (1) | AU1446397A (en) |
FI (1) | FI98744C (en) |
WO (1) | WO1997026408A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6172128B2 (en) * | 2014-03-25 | 2017-08-02 | セイコーエプソン株式会社 | Sheet manufacturing equipment |
JP2021119267A (en) * | 2020-01-30 | 2021-08-12 | セイコーエプソン株式会社 | Fiber processing system and fiber processing method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3020652A1 (en) * | 1980-05-30 | 1981-12-10 | GAO Gesellschaft für Automation und Organisation mbH, 8000 München | SECURITY PAPER WITH CHARACTERISTICS IN THE FORM OF LUMINESCENT SUBSTANCES AND METHOD FOR MODIFYING THE SAME |
DE3122470C2 (en) * | 1981-06-05 | 1985-09-05 | GAO Gesellschaft für Automation und Organisation mbH, 8000 München | Security paper and process for making the same |
US5118349A (en) * | 1986-08-19 | 1992-06-02 | Petrel | Security markings, material provided with security marks, and apparatus to detect the security mark |
-
1996
- 1996-01-17 FI FI960239A patent/FI98744C/en active
-
1997
- 1997-01-17 WO PCT/FI1997/000025 patent/WO1997026408A1/en not_active Application Discontinuation
- 1997-01-17 EP EP19970901099 patent/EP0876535A1/en not_active Withdrawn
- 1997-01-17 AU AU14463/97A patent/AU1446397A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP0876535A1 (en) | 1998-11-11 |
WO1997026408A1 (en) | 1997-07-24 |
AU1446397A (en) | 1997-08-11 |
FI98744B (en) | 1997-04-30 |
FI960239A0 (en) | 1996-01-17 |
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