EP1719634B1 - Authenticable coated paper material, in particular for labelling and packaging, and manufacturing method thereof - Google Patents

Authenticable coated paper material, in particular for labelling and packaging, and manufacturing method thereof Download PDF

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Publication number
EP1719634B1
EP1719634B1 EP20060113009 EP06113009A EP1719634B1 EP 1719634 B1 EP1719634 B1 EP 1719634B1 EP 20060113009 EP20060113009 EP 20060113009 EP 06113009 A EP06113009 A EP 06113009A EP 1719634 B1 EP1719634 B1 EP 1719634B1
Authority
EP
Grant status
Grant
Patent type
Prior art keywords
composition
paper
coating
activating
material
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP20060113009
Other languages
German (de)
French (fr)
Other versions
EP1719634A1 (en )
Inventor
Ferruccio Gilberti
Luca Monacelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gruppo Cordenons SpA
Original Assignee
Gruppo Cordenons SpA
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
Grant date

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14Security printing
    • B41M3/142Security printing using chemical colour-formers or chemical reactions, e.g. leuco-dye/acid, photochromes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/001Printing processes to produce particular kinds of printed work, e.g. patterns using chemical colour-formers or chemical reactions, e.g. leuco dyes or acids

Description

  • [0001]
    The present invention relates to an authenticable coated paper material, in particular for labelling and packaging, to the manufacturing method thereof, and to an authentication kit, in particular for labels and/or packages, using such paper material.
  • [0002]
    Various so-called security papers, i.e. papers provided with various artifices having the function of avoiding or highlighting possible illicit reproduction or forgery, are known; in particular, security papers are known whose composition incorporate substances sensitive to particular external treatments aimed, precisely, to reveal the presence of such substances.
  • [0003]
    This type of paper is not free from drawbacks, both during the manufacturing process (firstly because they require the inclusion of sensitive substances directly in the pulp during the paper manufacturing process, which requires particular precautions and care), and at the moment of use, because they generally require the use of relatively complex and costly authentication tools. Furthermore, the inclusion of sensitive substances in the paper composition compromises to a certain extent the final features of the product, above all in terms of printability, and indeed these papers are not generally suitable for high quality printing, typical of glossy coated paper. On the other hand, these papers cannot be coated, because coating would compromise the efficacy of the sensitisation treatment.
  • [0004]
    Other known security papers also present similar printing problems, because the security treatments, generally, indeed compromise printability.
  • [0005]
    Examples of the known authenticable papers are disclosed in the following documents: US-A-4 037 007 , US-A-5 250 492 , WO 98/33654 , US-A-4 022 771 .
  • [0006]
    Document GB-A-2 052 587 discloses an authenticable coated paper material comprising a paper support and a coating applied to said support, said coating comprising oxidised starch and a chromogen composition sensitive to application of an activating composition and adapted to generate a visible marking following the application of the activating composition.
  • [0007]
    It is an object of the present invention to provide a paper material which is free from the drawbacks of the prior art here described; in particular, it is an object of the invention to provide a paper material which is printable with high printing quality using traditional printing techniques and which is at the same time simply and efficaciously authenticable, being also relatively simple and cost-effective to manufacture.
  • [0008]
    The present invention therefore relates to an authenticable glossy coated paper material, in particular for labelling and packaging, comprising a paper support and a coating applied on at least one side of the support and printable with high printing quality, the material being characterised in that the coating is made of a polymeric coating composition comprising a polymerizable base mixed with kaolin, inert filters, casein and possible other additives and incorporating a chromogen composition sensitive to application of an external activating composition and adapted to generate a visible marking following the application of the external activating composition.
  • [0009]
    In particular, the chromogen composition is adapted to react with a reactant or solvent contained in the activating composition to release a colouring in the coating and generate the marking.
  • [0010]
    According to the invention, the chromogen composition includes at least one xanthene colourant, i.e. a colourant with oxygen-containing heterocyclic chromophores and/or at least one encapsulated colourant, in particular a pre-dispersed grease colourant.
  • [0011]
    In this way, the chromogen composition is sensitive to a chlorine-derivative based activating composition, in particular to an activating composition containing chloro-derivative inorganic acid salts, for example a hypochlorite solution, or organic chloro-derivatives, for example perchloroethylene, and/or to a solvent based activating composition, in particular a polar or apolar organic solvents based composition.
  • [0012]
    The invention also relates to an authentication kit, in particular for labels and/or packages, comprising the coated paper material described above and an authentication felt-tip pen adapted to release the activating composition to highlight the chromogen composition in the paper material coating.
  • [0013]
    In particular, the activating composition includes a reactant or solvent adapted to react with the chromogen composition to release a colouring in the coating.
  • [0014]
    The authentication felt-tip pen therefore contains a chloride derivate based activating composition, in particular an activating composition containing chloride derived inorganic acid salts, for example a hypochlorite solution, or organic chloro derivatives, for example perchloroethylene, and/or a polar or apolar organic solvent-based activating composition (according to the chromogen composition present in the coating).
  • [0015]
    The paper material described above is manufactured, according to a further aspect of the present invention, using the following method.
  • [0016]
    The paper support of essentially known type, for example a cellulosic base paper having a traditional composition and, preferably, a substance ranging between approximately 50 and 500 g/m2, is first manufactured in a known way.
  • [0017]
    A polymeric coating composition is then prepared, comprising a polymerizable base (acrylic, polyurethane, polyolefinic, etc.) mixed with kaolin, inert fillers (e.g. carbonate in crystalline form), casein and possible other (known) additives.
  • [0018]
    The chromogen composition described above is added to the coating composition.
  • [0019]
    The coating composition incorporating the chromogen composition is therefore applied, in a quantity ranging between approximately 1 and approximately 50 g/m2 and preferably between approximately 5 and approximately 20 g/m2 (dry) on one side (or also on both sides) of the paper support, so as to form a coated glossy surface, which is printable with high printing quality and authenticable by applying the external activating composition.
  • [0020]
    The coating composition is applied by spreading with an air-blade or sliding-blade coating machine.
  • [0021]
    A heating step then follows to dry and polymerise the coating composition to form the coating. The heating step is performed in infrared and/or hot air oven, at temperatures from approximately 100°C to 180°C and permanence time in the oven of approximately 0,5 to 4 minutes.
  • [0022]
    The material after traditional finishing steps is used in particular to make labels (e.g. for wine, beverages and foodstuff in general) and/or boxes, packages and wrappings of various types.
  • [0023]
    The advantages of the present invention are clear from the foregoing description. The paper material according to the invention allows indeed to manufacture labels and/or packages with excellent graphic quality, and also allows rapid and secure authentication.
  • [0024]
    The paper material according to the invention is indeed perfectly printable with the usual printing techniques, in particular ink printing techniques, with high printing quality; at the same time, the paper material of the invention may be easily and rapidly authenticated to verify that it is an original material (and therefore applied to an original item). For verifying authenticity, it is sufficient to pass the authentication felt-tip pen on the coated surface of the paper material so as to make the chromogen composition, present in the coating, react with the external activating composition, released by the authentication felt-tip pen, and generate a visible marking.
  • [0025]
    Instead, if following the passage of the authentication pen no marking is detected, it means that the paper material is a fake, and not an original.
  • [0026]
    The manufacturing method is also simple and cost-effective, in particular because the chromogen composition is not directly incorporated in the paper support (i.e. incorporated in the paper material mass) but is added to the coating composition before it is spread on the paper support; the chromogen composition is therefore present in the coating and not in the mass of the paper support.
  • [0027]
    The invention is further described by way of example in the following non-limiting embodiments.
  • EXAMPLES
  • [0028]
    Various series of paper supports having substance of 50, 90, 120, 150, 200, 250, 350, 500 g/m2, and various coating compositions (mixtures of different polymeric materials, kaolin, fillers and casein in various ratios) were prepared using the method described above.
  • [0029]
    Xanthene colourants and/or encapsulated colourants, in particular pre-dispersed grease colourants, available on the market, were added to the coating compositions.
  • [0030]
    The resulting compositions were then applied to one or both sides of the paper supports in variable amounts, in particular 1, 5, 10, 15, 20, 35, 50 g/m2, using the procedure described above.
  • [0031]
    The paper material obtained were printed using traditional techniques, with excellent graphic quality, and tested by passing an authentication felt-tip pen on the coated surfaces.

Claims (14)

  1. An authenticable coated paper material for labelling and packaging, comprising a paper support and a glossy coating applied on at least one side of the support and printable with high printing quality; wherein
    the coating is made of a polymeric coating composition comprising a polymerizable base mixed with kaolin, inert fillers, casein and possible other additives; and incorporating a chromogen composition sensitive to application of an external activating composition and adapted to generate a visible marking following the application of the external activating composition; the chromogen composition including at least one xanthene colourant and/or an encapsulated colourant.
  2. A paper material according to claim 1, characterised in that the chromogen composition is adapted to react with a reactant or solvent contained in the activating composition so as to release a colouring in the coating and generate the marking.
  3. A paper material according to one of the preceding claims, characterised in that the encapsulated colourant is a pre-dispersed grease colourant.
  4. A paper material according to one of the preceding claims, characterised in that the chromogen composition is sensitive to a chlorine-derivative based activating composition.
  5. A paper material according to one of the preceding claims, characterised in that the chromogen composition is sensitive to an activating composition containing chloro-derivative inorganic acid salts or organic chloro-derivatives.
  6. A paper material according to one of the preceding claims, characterised in that the chromogen composition is sensitive to a solvent based activating composition, in particular a polar or apolar organic solvents based composition.
  7. An authentication kit for labels and/or packaging, comprising a coated paper material according to one of the preceding claims and an authentication felt-tip pen, adapted to release said activating composition to highlight the chromogen composition in the coating.
  8. An authentication kit according to claim 7, characterised in that the activating composition includes a reactant or solvent adapted to react with the chromogen composition to release a colouring in the coating.
  9. An authentication kit according to claim 7 or 8, characterised in that the authentication felt-tip pen contains a chlorine-derivative based activating composition.
  10. An authentication kit according to claim 9, characterised in that the activating composition contains chloro-derivative inorganic acid salts and/or organic chloro-derivatives.
  11. An authentication kit according to one of the claims from 7 to 10, characterised in that the authentication felt-tip pen contains a solvent-based activating composition, in particular a polar or apolar organic solvents based composition.
  12. A method for manufacturing an authenticable coated paper material for labelling and packaging, comprising the steps of: providing a paper support; preparing a polymeric coating composition comprising a polymerizable base mixed with kaolin, inert fillers, casein and possible other additives; adding to the coating composition a chromogen composition sensitive to the application of an external activating composition adapted to generate a visible marking following the application of the external activating composition and including a xanthene colourant and/or an encapsulated colourant; applying the coating composition incorporating the chromogen composition on one side of the support to form a glossy printable coating with high printing quality and authenticable by applying the external activating composition.
  13. A method according to claim 12, characterised in that the chromogen composition is adapted to react with a reactant or solvent contained in the activating composition so as to release a colouring in the coating and generate said marking.
  14. A method according to claims 12 or 13, characterised in that the chromogen composition is sensitive to a chlorine-derivative based activating composition and/or a solvent based activating composition, in particular a polar or apolar organic solvents based composition.
EP20060113009 2005-04-26 2006-04-24 Authenticable coated paper material, in particular for labelling and packaging, and manufacturing method thereof Active EP1719634B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITMI20050744 2005-04-26

Publications (2)

Publication Number Publication Date
EP1719634A1 true EP1719634A1 (en) 2006-11-08
EP1719634B1 true EP1719634B1 (en) 2009-03-18

Family

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Family Applications (1)

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EP20060113009 Active EP1719634B1 (en) 2005-04-26 2006-04-24 Authenticable coated paper material, in particular for labelling and packaging, and manufacturing method thereof

Country Status (1)

Country Link
EP (1) EP1719634B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8697003B2 (en) 2009-12-14 2014-04-15 Kimberly-Clark Worldwide, Inc. Aqueous-triggered color-appearing inks

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1525383A (en) * 1974-08-02 1978-09-20 Portals Ltd Paper for printed sheets
US4022771A (en) * 1975-04-10 1977-05-10 Ncr Corporation Aminophenyl lactone compounds containing an ethyleno group
GB2052587B (en) * 1979-06-02 1983-04-07 Tullis Russel & Co Ltd Security papers
EP0475908A1 (en) * 1990-09-14 1992-03-18 Ciba-Geigy Ag Chromogenic lactam compounds, their production and use
US5318939A (en) * 1990-09-17 1994-06-07 Ciba-Geigy Corporation Pressure-sensitive or heat-sensitive recording material
US5250492A (en) * 1991-03-07 1993-10-05 The Standard Register Company Coatings for use with business forms, security documents, or safety paper
US5912205A (en) * 1997-01-30 1999-06-15 The Standard Register Company Heat resistant security document

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8697003B2 (en) 2009-12-14 2014-04-15 Kimberly-Clark Worldwide, Inc. Aqueous-triggered color-appearing inks
US9555147B2 (en) 2009-12-14 2017-01-31 Kimberly-Clark Worldwide, Inc. Aqueous-triggered color-appearing inks

Also Published As

Publication number Publication date Type
EP1719634A1 (en) 2006-11-08 application

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