WO1997043126A1 - Improved process for the production of scratch-off cards - Google Patents

Improved process for the production of scratch-off cards Download PDF

Info

Publication number
WO1997043126A1
WO1997043126A1 PCT/GB1997/001281 GB9701281W WO9743126A1 WO 1997043126 A1 WO1997043126 A1 WO 1997043126A1 GB 9701281 W GB9701281 W GB 9701281W WO 9743126 A1 WO9743126 A1 WO 9743126A1
Authority
WO
WIPO (PCT)
Prior art keywords
wax
release
scratch
process
cards
Prior art date
Application number
PCT/GB1997/001281
Other languages
French (fr)
Inventor
Gary Clarence Scupham
Original Assignee
The British Printing Company Ltd.
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
Priority to GBGB9610011.0A priority Critical patent/GB9610011D0/en
Priority to GB9610011.0 priority
Application filed by The British Printing Company Ltd. filed Critical The British Printing Company Ltd.
Publication of WO1997043126A1 publication Critical patent/WO1997043126A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/02Dusting, e.g. with an anti-offset powder for obtaining raised printing such as by thermogravure ; Varnishing
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63FCARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F3/00Board games; Raffle games
    • A63F3/06Lottos or bingo games; Systems, apparatus or devices for checking such games
    • A63F3/065Tickets or accessories for use therewith
    • A63F3/0665Tickets or accessories for use therewith having a message becoming legible after rubbing-off a coating or removing an adhesive layer
    • 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
    • B41M3/005Colour cards; Painting supports; Latent or hidden images, e.g. for games; Time delayed images

Abstract

A process for the production of scratch-off cards, based on offset-lithographic printing, is disclosed. The process comprises applying printed matter to a base by means of at least one set of rollers, then applying a wax-like release layer of oleoresinous release varnish onto at least one area of said printed matter by means of at least one other set of rollers, and then applying an opaque coating over said release layer by means of at least one further set of rollers. The release layer is preferred to be transparent, and to comprise an oleamide wax and a polyethylene wax that provide a surface-active ingredient to induce release of the opaque coating from over the printed matter. The wax-like oleoresinous release material may have other applications.

Description

IMPROVED PROCESS FOR THE PRODUCTION OF SCRATCH-OFF CARDS

This invention relates to scratch-off cards and, more specifically, to a process for producing scratch-off cards and to a release material particularly intended for use in such production. Scratch-off cards are well-known in having an opaque layer that can be scratched off to reveal "secret" printed matter which, typically, can be redeemable for cash or some other prize.

The conventional process for producing scratch-off cards, utilises a form of rotary-screen printing in which aromatic solvent-based inks and a rubber/latex-based so- called "silver" coating are applied through a polypropylene mesh screen. However, this known process has the disadvantages of being relatively slow and, usually also, environmentally unfriendly as the extracted solvents may subsequently be discharged into the atmosphere.

It is one object of the present invention to provide a process for producing scratch-off cards, in which the above disadvantages are at least reduced - usually at less expense than that involved with the conventional process.

According to the present invention, a process for the production of scratch-off cards is based on offset- lithographic printing and comprises applying printed- matter to a base by means of at least one set of rollers, then applying a wax-like release layer of oleoresinous resin varnish onto at least one area of said printed matter by means of at least one other set of rollers, and then applying an opaque coating over said release layer by means of at least one further set of rollers.

Preferably, the release layer is transparent and comprises oleamide wax and a polyethylene wax which provide a surface-active ingredient to induce release of the opaque coating. The printed matter may be derived from conventional grey-text offset-litho ink, and the opaque coating may be an aluminium-containing coater "silver" ink applied by means of a coating unit and then dried and cured by UV light.

The invention also provides a wax-like release material, particularly intended for use in the production of scratch-off cards, and comprising an oleoresinous varnish which provides a surface-active ingredient to induce release of an over-coating layer.

Preferably, the oleoresinous varnish includes an oleamide wax and a propylene wax.

An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings in which:

Fig. 1 is a cross-sectional view illustrating, on an exaggerated scale, the basic structure of a scratch-off card according to the invention;

Fig. 2 is a plan view illustrating the (printed) base part of the card; and,

Fig. 3 is a diagrammatic side elevation showing a printing press for producing the scratch-off cards.

Referring to Figs. 1 and 2 of the drawings, a scratch-off card comprises a base (10) formed of conventional material such as paper or card and carrying printed matter (11) on its upper face, a wax-like release layer (12) adhering firmly to the base, and an opaque coating (13) removably adhering to the release layer (12). As with known scratch-off cards, the opaque coating conceals completely an area of "secret" text (14) within the printed matter on the base, but can be removed - using for example the edge of a coin - to reveal the secret text which may comprise numbers or other symbols that can occasionally form a combination to attract a prize.

The scratch-off cards are produced, in sheets, on an offset-litho printing press such as illustrated in Fig. 3, and which can comprise a modified version of the Roland 600 series produced by MAN Roland Drukmaschinen AG, Germany.

In the printing operation, blank sheets (15) are fed from a stack (16) by means of a feeder separator (17), and passed through first, second and third banks of double printing units (18,19,20). The six units are more or less standard, and each comprises first and second printing plate cylinders (21,22), offset blanket cylinders (23,24) and an impression cylinder (25). Promotional and instructional material is printed on each sheet (15) by means of the first and second printing units (18 and 19) in a conventional manner. In the third unit (20) the secret text (14) is applied to an area of the sheet by means of printing plate cylinder (21A), and a release layer of oxidation wax (12) is applied over that area by means of a relief plate mounted on cylinder (22A). From the printing unit (20) the sheets are fed to a coating unit (26) which has a printing plate cylinder (27) and an impression cylinder (28), and which applied an opaque scratch-off coating (13) over the wax layer by means of a Cyrel relief plate; the coating is then dried and cured by UV radiation in a Spectral UV light system (29). More specifically, in the drying/curing process, the "silver" coating is cured by the UV radiation whereas the transparent release layer dries by oxidation.

The finished sheets are fed to a collection bay (30), again by means of gripper bars (31), and subsequently guillotined or punched into individual or blocks of scratch-off cards.

The printing of the secret text (14) may employ a conventional grey-text ink such as Coates Lorilleux V0727, although other colours may be employed, and the opaque coating may comprise an aluminium-containing coater "silver" ink such as Coates Lorilleux Ultra-Violet UX 7024 which is a combination of finely-divided aluminium blended into mixed molecular weight acrylates, photoinitiators and stabilisers; it is printed from photopolymer plates and dried immediately by the end-of- press UV lamps in the light system (29). The product is printed wet-on-wet over the wax release varnish so that, when UV-cured, it withstands general handling and subsequently, when scratched off, both coater "silver" (13) and wax release varnish (12) are removed from inks beneath.

The release layer (12) is preferably an oleoresinous release varnish which will be referred to as VO 730 and which comprises an oleamide wax and a polyethylene wax that provide a surface-active ingredient to induce release of the overprinted ink. The oleamide and polyethylene waxes are semi-oxidative and are dispersed into a base varnish which is used as the carrier for the wax through the printing machine, so enabling transfer of the image and binding of the wax to the substrate or base

(10). The base varnish consists of rosin maleic resin and vinyl toluidine alkyl dissolved in a mixture of soya alkyd, vegetable oil and petroleum distillate to impart hardness, flexibility and chemical resistance of the printed film, with the metallic drier used to accelerate the speed by which this is achieved. The release varnish layer (12) is applied dry-offset in the last printing unit (20) over any other inks on the particular design required, and is immediately over-printed by the coater silver. VO 730 has the following analysis (%):

Oleamide Wax 28 - 30

Polyethylene Wax 8 - 10

Rosin Maleic Resin 15 - 17

Vinyl Toluidine Alkyd 4 - 6

Soya Alkyd 4 - 6

Vegetable Oil 11 - 13

Petroleum Distillate 21 - 23

Metallic (Co) Driers 0.3 - 0.5

The above-defined release material is novel and it has been found that, with the use of release and coating materials as described above, in combination, scratch-off cards can be readily produced relatively quickly; the opaque silver coating (13) can be cured in a short period of time and, after just a few hours or even less, the opaque coating can be removed to leave the grey-type text (14) clearly visible through any residual (transparent) wax layer (12) .

It will be appreciated to one skilled in the art that at least the above-mentioned Vegetable Oil may be substituted by a suitable equivalent material.

The release material may be employed in other processes for producing scratch-off cards, preferably using off-set lithographic rather than rotary-screen printing, and the adhesive properties of the material can find applications other than in the production of scratch-off cards.

Although the printing machine described above is generally conventional, the normal use of the coating unit (26) is for the application of transparent lacquers, and of course the UV drying/curing unit (29) is an additional feature of the machine. If necessary for increased security, an additional printing unit may be incorporated. It will also be appreciated that scratch- off cards according to the present invention can be produced by a reel-fed system as an alternative to a sheet-fed system.

Claims

CLAIMS :
1. A process for the production of scratch-off cards, based on offset-lithographic printing and comprising: applying printed matter to a base by means of at least one set of rollers, then applying a wax-like release layer of oleoresinous release varnish onto at least one area of said printed matter by means of at least one other set of rollers, and then applying an opaque coating over said release layer by means of at least one further set of rollers.
2. A process as claimed in Claim 1, in which said release layer is transparent and comprises an oleamide wax and a polyethylene wax that provide a surface-active ingredient to induce release of the opaque coating from over the printed matter.
3. A process as claimed in Claim 2, in which said release layer also comprises a resinous wax carrier for the wax, vegetable or like oil, a vehicle such as petroleum distilate, and a metallic drier.
4. A process as claimed in any preceding Claim, in which said printed matter is derived from text using offset-litho ink.
5. A process as claimed in any preceding Claim, in which said opaque coating comprises an aluminium- containing coater "silver" ink.
6. A process for producing scratch-off cards, substantially as hereinbefore described with reference to the accompanying drawings.
7. Scratch-off cards whenever produced by a process according to any preceding Claim.
8. A wax-like release material, particularly intended for use in the production of scratch-off cards, and comprising an oleoresinous varnish which provides a surface-active ingredient to induce release of an over¬ coating layer.
9. A release material as claimed in Claim 8, and including oleamide wax and polyethylene wax.
10. A release material as claimed in Claim 9, and also comprising a resinous wax-carrier, a vegetable or like oil, a vehicle such as petroleum distilate, and a metallic drier.
11. A transparent wax-like release material, substantially as hereinbefore described.
PCT/GB1997/001281 1996-05-14 1997-05-13 Improved process for the production of scratch-off cards WO1997043126A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB9610011.0A GB9610011D0 (en) 1996-05-14 1996-05-14 Improved process for the production of scratch-off cards
GB9610011.0 1996-05-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU27815/97A AU2781597A (en) 1996-05-14 1997-05-13 Improved process for the production of scratch-off cards

Publications (1)

Publication Number Publication Date
WO1997043126A1 true WO1997043126A1 (en) 1997-11-20

Family

ID=10793651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/001281 WO1997043126A1 (en) 1996-05-14 1997-05-13 Improved process for the production of scratch-off cards

Country Status (3)

Country Link
AU (1) AU2781597A (en)
GB (1) GB9610011D0 (en)
WO (1) WO1997043126A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0931673A2 (en) * 1998-01-26 1999-07-28 Tektronix, Inc. Phase change inks and methods of printing
EP0972548A2 (en) * 1998-07-16 2000-01-19 KANZAN SPEZIALPAPIERE GmbH Scratch-off lottery tickets and method for their manufacture
GB2351039A (en) * 1999-06-15 2000-12-20 Kcm Partnership The Printing method
FR2827842A1 (en) * 2001-07-25 2003-01-31 Sequoias Method for securing a document which includes masked code, comprises mass production techniques of assembly, making supports opaque, secure printing, code masking and packaging in a pocket
WO2003069549A1 (en) * 2002-02-13 2003-08-21 T.S.D. Llc Debit card having applied personal identification number (pin) and scratch-off coating and method of forming same
WO2006084651A1 (en) * 2005-02-08 2006-08-17 Giesecke & Devrient Gmbh Information secure
US7793590B2 (en) 2008-05-15 2010-09-14 T.S.D. Llc System and method for forming debit card using improved print cylinder mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1183734A (en) * 1983-02-09 1985-03-12 Eli A. Ganho Process and compositions for lithographic printing in multiple layers
CA1190987A (en) * 1984-05-23 1985-07-23 Eli Ganho Process and compositions for printing in multiple layers
US4726608A (en) * 1986-08-05 1988-02-23 Scientific Games Of California, Inc. Information bearing article with tamper resistant scratch-off opaque coating
EP0358610A2 (en) * 1988-09-05 1990-03-14 Sicpa Holding S.A. Printing ink for making erasable prints

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1183734A (en) * 1983-02-09 1985-03-12 Eli A. Ganho Process and compositions for lithographic printing in multiple layers
CA1190987A (en) * 1984-05-23 1985-07-23 Eli Ganho Process and compositions for printing in multiple layers
US4726608A (en) * 1986-08-05 1988-02-23 Scientific Games Of California, Inc. Information bearing article with tamper resistant scratch-off opaque coating
EP0358610A2 (en) * 1988-09-05 1990-03-14 Sicpa Holding S.A. Printing ink for making erasable prints

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0931673A2 (en) * 1998-01-26 1999-07-28 Tektronix, Inc. Phase change inks and methods of printing
EP0931673A3 (en) * 1998-01-26 1999-10-27 Tektronix, Inc. Phase change inks and methods of printing
EP0972548A2 (en) * 1998-07-16 2000-01-19 KANZAN SPEZIALPAPIERE GmbH Scratch-off lottery tickets and method for their manufacture
DE19832004A1 (en) * 1998-07-16 2000-01-27 Kanzan Spezialpapiere Gmbh Scratch cards and methods for their preparation
DE19832004C2 (en) * 1998-07-16 2000-06-29 Kanzan Spezialpapiere Gmbh Scratch cards and methods for their preparation
EP0972548A3 (en) * 1998-07-16 2001-03-28 KANZAN SPEZIALPAPIERE GmbH Scratch-off lottery tickets and method for their manufacture
GB2351039A (en) * 1999-06-15 2000-12-20 Kcm Partnership The Printing method
GB2351039B (en) * 1999-06-15 2002-12-18 Kcm Partnership The Printing method
FR2827842A1 (en) * 2001-07-25 2003-01-31 Sequoias Method for securing a document which includes masked code, comprises mass production techniques of assembly, making supports opaque, secure printing, code masking and packaging in a pocket
WO2003069549A1 (en) * 2002-02-13 2003-08-21 T.S.D. Llc Debit card having applied personal identification number (pin) and scratch-off coating and method of forming same
US6729656B2 (en) 2002-02-13 2004-05-04 T.S.D. Llc Debit card having applied personal identification number (PIN) and scratch-off coating and method of forming same
CN100354886C (en) * 2002-02-13 2007-12-12 T·S·D·有限公司 Debit card having applied personal identification number (pin) and scratch-off coating and method of forming same
WO2006084651A1 (en) * 2005-02-08 2006-08-17 Giesecke & Devrient Gmbh Information secure
US7793590B2 (en) 2008-05-15 2010-09-14 T.S.D. Llc System and method for forming debit card using improved print cylinder mechanism
US8205552B2 (en) 2008-05-15 2012-06-26 T.S.D. Llc System and method for forming debit card using improved print cylinder mechanism

Also Published As

Publication number Publication date
GB9610011D0 (en) 1996-07-17
AU2781597A (en) 1997-12-05

Similar Documents

Publication Publication Date Title
US3363557A (en) Heat transfer of indicia containing sublimable coloring agent
US4121003A (en) Tamper indicating labels
KR100554301B1 (en) A web-fed or sheet-fed printing machine for security papers
US4299637A (en) Method of making a game ticket
US4726608A (en) Information bearing article with tamper resistant scratch-off opaque coating
CA1110063A (en) Process for producing pressure-sensitive copy sheets using novel radiation curable coatings
CA2176175C (en) Multi-color overprinting of scratch-off lottery tickets
EP1555133B1 (en) Equipment of a printing machine for coating a printed product
US4627642A (en) Method of marking for deterring fraud with valuable documents
US5704647A (en) Multi-color overprinting of scratch-off lottery tickets
KR20110099681A (en) Magnetically oriented ink on primer layer
US20030136847A1 (en) Method for producing laser-writable data carriers and data carrier produced according to this method
US4420515A (en) Metallization process for protecting documents of value
EP0538358B1 (en) Improvements relating to signature panels
US5630363A (en) Combined lithographic/flexographic printing apparatus and process
UA88775C2 (en) Security document, method of producing Security document and use of Security document
EP1109675B1 (en) Method and product for protecting an object with a soluble binder security print
WO2004072378A1 (en) Security paper and method for the production thereof
EP1818893B1 (en) Adhesive label, method of manufacture and its utilisation
JPH06320712A (en) Offset printing press for in-lilne coating printed matter
EP1984086A1 (en) Improved instant lottery ticket and method
RU95108006A (en) Valuable paper with color marking
EP0279526A3 (en) Security document
CN101898445B (en) Process for producing security papers, intaglio printing press for implementing the process, and security paper produced according to the process
DE60110228T3 (en) Process for preparing an image on a substrate and ink used thereof

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN YU AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase in:

Ref country code: JP

Ref document number: 97540646

Format of ref document f/p: F

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase in:

Ref country code: CA