WO1998014661A1 - Encollage du papier - Google Patents

Encollage du papier Download PDF

Info

Publication number
WO1998014661A1
WO1998014661A1 PCT/GB1996/002411 GB9602411W WO9814661A1 WO 1998014661 A1 WO1998014661 A1 WO 1998014661A1 GB 9602411 W GB9602411 W GB 9602411W WO 9814661 A1 WO9814661 A1 WO 9814661A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
formulation
treatment
polymer
mixture
Prior art date
Application number
PCT/GB1996/002411
Other languages
English (en)
Inventor
Suresh Babubhai Kapadia
Original Assignee
Ghelani, Meena, Paresh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ghelani, Meena, Paresh filed Critical Ghelani, Meena, Paresh
Priority to PCT/GB1996/002411 priority Critical patent/WO1998014661A1/fr
Priority to AU71384/96A priority patent/AU7138496A/en
Publication of WO1998014661A1 publication Critical patent/WO1998014661A1/fr

Links

Classifications

    • 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
    • D21H21/16—Sizing or water-repelling agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • 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
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security 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
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • 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
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • This invention relates to a process for the chemical treatment of paper, a chemical formulation utilized in that process, and to novel paper products.
  • Paper has been used for centuries, for mainly three purposes. First, paper is used to record thoughts or ideas by way of printing and writing. Secondly, paper is used as packaging or as packaging articles such as labels or cartons and bags paper. Thirdly, paper is also used as a medium of exchange in the form of printed currency, banknotes, cheques etc.
  • Another coating process comprises laminating the paper with plastic films such as PVC, polyester, HDP etc.
  • plastic films such as PVC, polyester, HDP etc.
  • a process for the manufacture or treatment of paper or a paper product comprises applying to the paper or paper product, either during manufacture or subsequently, a chemical formulation which confers wate ⁇ roofing or water- repellent properties on the paper.
  • the process according to the invention is advantageous in that the paper produced by the process has improved, ie reduced, water-absorbing characteristics compared with conventional papers.
  • the products of the process may have reduced Cobb values, as well improved tensile strength and so-called "burst factor". Consequently, the products may be more durable than conventional papers and increased lifetime.
  • a chemical formulation for use in the manufacture or treatment of paper or paper products the formulation being capable of reducing the water- absorbing properties of the paper or paper products.
  • the formulation preferably comprises a dispersion or solution of a polymer or polymer precursor in an organic solvent or mixture or organic solvents.
  • the formulation is preferably a dispersion of a polymer in a mixture of organic solvents.
  • the solids content of the formulation is preferably greater than 5% w/w and less than 30% w/w. Typically, the solids content is 10-15% w/w.
  • the polymer is most preferably a graft copolymer.
  • the formulation preferably contains a mixture of organic solvents.
  • the solvents preferably include aromatic solvents such as xylene and toluene. Most preferably, the components of the mixture may be present in approximately equal proportions.
  • the formulation may also inco ⁇ orate further organic components. One such further component is methyl isobutyl ketone.
  • the formulation according to the invention has the following characteristics:
  • the process of the invention may be applied to any and all types of paper.
  • the process may be applied during manufacture of the paper or paper product at any suitable stage.
  • the process may be applied to a conventional paper at the end of the normal manufacturing process, or subsequently.
  • the process may also be applied to completed paper products, eg assembled paper packaging units such as envelopes, boxes or cartons.
  • completed paper products eg assembled paper packaging units such as envelopes, boxes or cartons.
  • the external and/or internal surfaces of such packaging may be treated in accordance with the invention.
  • the external and/or internal layers may be produced from papers treated in accordance with the invention.
  • the process of the invention may be of particular utility in relation to security papers for use in, for instance, banknotes.
  • the lifetime of banknotes may be very short (eg no more than a few months) and the regular replacement of banknotes in circulation represents a very costly matter.
  • By extending the lifetime of banknotes by treatment in accordance with the process of the invention very considerable savings may be made.
  • Security papers subjected to the process of the invention may also inco ⁇ orate other security features, eg watermarking, security threads etc.
  • Wate ⁇ roof or water-repellent security papers and items, eg banknotes, produced from them represent a further novel aspect of the present invention.
  • the process of the invention may be applied to any kind of paper made of any kind of pulp or cotton comber, before calendering or final processing.
  • the process may be applied before or after application of a watermark, eg by cylinder mould, four dinier or other process.
  • the process may be applied before or after full or alternate embedding or window threading of any type of security thread, eg comet, continuous printed or imprinted, metallised or demetallised, positive text or negative text, magnetic or machine-readable threads etc.
  • Coating by the process of the invention may also take place before or after inco ⁇ oration of UV- detectable fibres.
  • the process may also be applied after the paper is calendered and ready for use or printing.
  • the process may be applied to all types of plain or printed papers, including currency, posters or packaging, before or after printing by any type of printing ink, including intaglio, magnetic, short-wave, UV, etc.
  • Treated papers produced by the process of the invention may be used for any pu ⁇ ose, eg as currency (banknotes) of all denominations, secured documents, security papers, cheques, packaging papers. Papers for use in packaging may be converted into corrugated boxes, cartons, bags, or special pu ⁇ ose moisture-controlling packaging for soaps, detergents, medicines, processed and unprocessed food articles, fruit and vegetables, etc.
  • pu ⁇ ose eg as currency (banknotes) of all denominations, secured documents, security papers, cheques, packaging papers.
  • Papers for use in packaging may be converted into corrugated boxes, cartons, bags, or special pu ⁇ ose moisture-controlling packaging for soaps, detergents, medicines, processed and unprocessed food articles, fruit and vegetables, etc.
  • the chemical formulation of the invention may be applied by various means, eg using a conventional varnishing machine, gravure machine, brush coating, dip coating or any other method of coating, or on-line during manufacture of the paper.
  • the process may be applied to any and all types of papers including banknote paper, security papers, craft papers, chromo-art, maplitho, yugoart, currency papers with or without security features.
  • Plain or printed papers may be treated in the required quantity depending upon the requirements, in roll, sheet, container or any other desired form.
  • a manufacturing line and process for a security paper inco ⁇ orating a watermark and security thread contains the following stages:
  • the formulation of the invention is applied at the point 10, using an on-line coating machine.
  • the process may be applied at other stages.
  • the treatment may be applied between stages 4 and 5, between stages 5 and 6, stages 8 and 9, stages 11 and 12, stages 12 and 13, stages 13 and 14, or subsequent to stage 14.
  • the process of the invention comprising treatment of the paper with the chemical formulation of the invention, may also replace the PVA/gelatin bath at stage 7. It will be understood that the process of the invention may be applied at any suitable stage of the paper manufacturing process. In other paper manufacturing processes the sequence and methods of operations may be different to that illustrated, and the precise point at which the treatment according to the invention is carried out will generally not be important.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

L'invention concerne le traitement du papier pendant la fabrication à l'aide d'une formulation chimique. Ce traitement permet d'améliorer la valeur de Cobb, et sa résistance à la traction. Ce traitement peut être effectué pendant la fabrication du papier. Par ailleurs, ce traitement peut également être réalisé sur le papier fini, ou sur des produits de papier comme des articles d'emballage. La formulation chimique comprend des solvants organiques, et est, de préférence, une dispersion d'un polymère dans un mélange de ces solvants. Le procédé selon l'invention est particulièrement utile pour les papiers fiduciaires, tels que ceux utilisés pour des billets de banque, etc.
PCT/GB1996/002411 1996-10-01 1996-10-01 Encollage du papier WO1998014661A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/GB1996/002411 WO1998014661A1 (fr) 1996-10-01 1996-10-01 Encollage du papier
AU71384/96A AU7138496A (en) 1996-10-01 1996-10-01 Paper sizing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB1996/002411 WO1998014661A1 (fr) 1996-10-01 1996-10-01 Encollage du papier

Publications (1)

Publication Number Publication Date
WO1998014661A1 true WO1998014661A1 (fr) 1998-04-09

Family

ID=10788227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/002411 WO1998014661A1 (fr) 1996-10-01 1996-10-01 Encollage du papier

Country Status (2)

Country Link
AU (1) AU7138496A (fr)
WO (1) WO1998014661A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000019015A1 (fr) * 1998-09-26 2000-04-06 Ghelani, Meena, Paresh Produits papetiers et formulations chimiques associees a leur fabrication
WO2004028825A2 (fr) * 2002-09-19 2004-04-08 Giesecke & Devrient Gmbh Papier de securite
WO2008054581A1 (fr) * 2006-10-27 2008-05-08 Crane & Co., Inc. Document de sécurité résistant à la terre et/ou à l'humidité
FR2966382A1 (fr) * 2010-10-26 2012-04-27 Oberthur Technologies Procede de traitement de surface d'un document de securite, document et machine correspondants
FR2967363A1 (fr) * 2010-11-16 2012-05-18 Centre Nat Rech Scient Machine et procede de traitement par greffage chromatogenique d'un substrat hydroxyle
US20120205062A1 (en) * 2006-02-09 2012-08-16 Arjowiggins Security Sheet material comprising at least one watermark having a colored shade

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1118268A (en) * 1965-07-28 1968-06-26 Gen Mills Inc Treating materials with polyisocyanates
JPS5218908A (en) * 1975-07-30 1977-02-12 Mitsubishi Paper Mills Ltd Production of coating paper for printing
EP0226408A2 (fr) * 1985-12-09 1987-06-24 Paper Chemistry Laboratory, Inc. Procédé pour la fabrication de produits papetiers
EP0285134A2 (fr) * 1987-03-31 1988-10-05 Union Carbide Corporation Traitement par hydridoaminosilane pour rendre imperméables des surfaces
EP0348127A2 (fr) * 1988-06-21 1989-12-27 Exxon Chemical Patents Inc. Procédé d'encollage de papier et de produits similaires
GB2241966A (en) * 1990-03-15 1991-09-18 Nacional Moneda Timbre Process for the manufacture of paper
EP0545228A1 (fr) * 1991-11-25 1993-06-09 Yhtyneet Paperitehtaat Oy Sac résistant à l'humidité

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1118268A (en) * 1965-07-28 1968-06-26 Gen Mills Inc Treating materials with polyisocyanates
JPS5218908A (en) * 1975-07-30 1977-02-12 Mitsubishi Paper Mills Ltd Production of coating paper for printing
EP0226408A2 (fr) * 1985-12-09 1987-06-24 Paper Chemistry Laboratory, Inc. Procédé pour la fabrication de produits papetiers
EP0285134A2 (fr) * 1987-03-31 1988-10-05 Union Carbide Corporation Traitement par hydridoaminosilane pour rendre imperméables des surfaces
EP0348127A2 (fr) * 1988-06-21 1989-12-27 Exxon Chemical Patents Inc. Procédé d'encollage de papier et de produits similaires
GB2241966A (en) * 1990-03-15 1991-09-18 Nacional Moneda Timbre Process for the manufacture of paper
EP0545228A1 (fr) * 1991-11-25 1993-06-09 Yhtyneet Paperitehtaat Oy Sac résistant à l'humidité

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 7712, Derwent World Patents Index; Class A82, AN 77-21101Y, XP002031272 *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000019015A1 (fr) * 1998-09-26 2000-04-06 Ghelani, Meena, Paresh Produits papetiers et formulations chimiques associees a leur fabrication
WO2004028825A2 (fr) * 2002-09-19 2004-04-08 Giesecke & Devrient Gmbh Papier de securite
WO2004028825A3 (fr) * 2002-09-19 2004-12-16 Giesecke & Devrient Gmbh Papier de securite
US8333870B2 (en) 2002-09-19 2012-12-18 Giesecke & Devrient Gmbh Security paper
US8852396B2 (en) * 2006-02-09 2014-10-07 Arjowiggins Security Sheet material comprising at least one watermark having a colored shade
US20120205062A1 (en) * 2006-02-09 2012-08-16 Arjowiggins Security Sheet material comprising at least one watermark having a colored shade
EP2466005A1 (fr) * 2006-10-27 2012-06-20 Crane & Co., Inc. Document sécurisé résistant aux salissures et/ou à l'humidité
WO2008054581A1 (fr) * 2006-10-27 2008-05-08 Crane & Co., Inc. Document de sécurité résistant à la terre et/ou à l'humidité
EP3231938B1 (fr) 2006-10-27 2021-08-04 Crane & Co., Inc. Document sécurisé résistant aux salissures et/ou à l'humidité
EP3231938A1 (fr) * 2006-10-27 2017-10-18 Crane & Co., Inc. Document sécurisé résistant aux salissures et/ou à l'humidité
EP2466005B1 (fr) 2006-10-27 2017-10-04 Crane & Co., Inc. Document sécurisé résistant aux salissures et/ou à l'humidité
KR101117020B1 (ko) * 2006-10-27 2012-03-22 크레인 앤드 캄파니 인코퍼레이티드 내오성 및/또는 내습성 보안 서류
JP2010507511A (ja) * 2006-10-27 2010-03-11 クレイン アンド カンパニー インコーポレーテッド 耐汚染性および／または耐湿性セキュリティドキュメント
US8366879B2 (en) 2006-10-27 2013-02-05 Crane & Co., Inc. Soil and/or moisture resistant secure document
WO2012055885A1 (fr) 2010-10-26 2012-05-03 Oberthur Technologies Procede de traitement de surface d'un document de securite, document et machine correspondants
FR2966382A1 (fr) * 2010-10-26 2012-04-27 Oberthur Technologies Procede de traitement de surface d'un document de securite, document et machine correspondants
CN103298864A (zh) * 2010-11-16 2013-09-11 国家科学研究中心 用于通过产色嫁接处理羟基化的基底的机器和方法
CN103298864B (zh) * 2010-11-16 2014-08-13 国家科学研究中心 用于通过产色嫁接处理羟基化的基底的机器和方法
WO2012066015A1 (fr) * 2010-11-16 2012-05-24 Centre National De La Recherche Scientifique (Cnrs) Machine et procede de traitement par greffage chromatogenique d'un substrat hydroxyle
US10207287B2 (en) 2010-11-16 2019-02-19 Centre National De La Recherche Scientifique (Cnrs) Machine and treatment process via chromatogenous grafting of a hydroxylated substrate
FR2967363A1 (fr) * 2010-11-16 2012-05-18 Centre Nat Rech Scient Machine et procede de traitement par greffage chromatogenique d'un substrat hydroxyle

Also Published As

Publication number Publication date
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