AU612884B2 - Printing ink system for the production of rub-off printings - Google Patents
Printing ink system for the production of rub-off printings Download PDFInfo
- Publication number
- AU612884B2 AU612884B2 AU40973/89A AU4097389A AU612884B2 AU 612884 B2 AU612884 B2 AU 612884B2 AU 40973/89 A AU40973/89 A AU 40973/89A AU 4097389 A AU4097389 A AU 4097389A AU 612884 B2 AU612884 B2 AU 612884B2
- Authority
- AU
- Australia
- Prior art keywords
- ink
- printing
- release
- covering
- binder
- 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.)
- Ceased
Links
- 238000007639 printing Methods 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000976 ink Substances 0.000 claims abstract description 81
- 238000001035 drying Methods 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 239000000178 monomer Substances 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 5
- -1 polysiloxane acrylate Polymers 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 239000004200 microcrystalline wax Substances 0.000 claims description 3
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- 239000001993 wax Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 125000005474 octanoate group Chemical group 0.000 claims description 2
- 239000003605 opacifier Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229940114937 microcrystalline wax Drugs 0.000 claims 1
- 125000005609 naphthenate group Chemical group 0.000 claims 1
- 150000003377 silicon compounds Chemical class 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 8
- 238000007645 offset printing Methods 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 238000007644 letterpress printing Methods 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 238000006748 scratching Methods 0.000 abstract 1
- 230000002393 scratching effect Effects 0.000 abstract 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 abstract 1
- 238000007650 screen-printing Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 3
- SGGOJYZMTYGPCH-UHFFFAOYSA-L manganese(2+);naphthalene-2-carboxylate Chemical compound [Mn+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 SGGOJYZMTYGPCH-UHFFFAOYSA-L 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 150000008062 acetophenones Chemical class 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical compound C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 159000000032 aromatic acids Chemical class 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- PLOYJEGLPVCRAJ-UHFFFAOYSA-N buta-1,3-diene;prop-2-enoic acid;styrene Chemical compound C=CC=C.OC(=O)C=C.C=CC1=CC=CC=C1 PLOYJEGLPVCRAJ-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/54—Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Printing Methods (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Ceramic Products (AREA)
- Ink Jet (AREA)
Abstract
The printing inks are intended and suitable for making opaque prints which can be removed by rubbing or scratching on areas to be covered of a print substrate by letterpress or offset printing. They comprise a release ink and a covering ink containing metal pigments to be printed thereon. The binder phase of the two systems, which is essentially free from solvents, comprises principally highly reactive, oxidatively drying products and monomers or prepolymers which dry chemically either under the action of atmospheric oxygen, possibly with additional assistance of heat (IR irradiation) or under the action of ultraviolet light (UV irradiation).
Description
i
AUSTRALIA
PATENTS ACT 1952 COMPLETE SPECIFICATION 288Form Form
(ORIGINAL)
FOR OFFICE USE a E 0 ii 0 Short Title: Int. Cl: Application Number: Lodged: Complete Specification-Lodged: Accepted: Lapsed: Published: Priority: Related Art: Name of Applicant: Address of Applicant: Actual Inventor: Address for Service: E COMPLETED BY APPLICANT SICPA HOLDING SA BURGSTRASSE 17 CH-8750 GLARUS
SWITZERLAND
GRIFFITH HACK CO., 601 St. Kilda Road, Melbourne, Victoria 3004, Australia.
Complete Specification for the invention entitled: PRINTING INK SYSTEM FOR THE PRODUCTION OF RUB-OFF PRINTINGS.
The following statement is a full description of this invention including the best method of performing it known to me:i
I
PRINTING INK SYSTEM FOR THE PRODUCTION OF RUB-OFF
PRINTINGS
This invention belongs to the field of the document printing art and is related more specifically to an offset or typographic printing ink system for the production of opaque printings which can be removed by rubbing.
It is well known to produce printed products having mechanically removable regions o: areas where underlying, generally printed indicia are covered by an 09 Ittopaque layer which can be removed by rubbing under disintegration of the covering layer. Application examples thereof are lottery ticketG where the customer may find out, immediately after the purchase of the ticket, whether it has won or not when he rubs off the C C C indicated areas to look what is printed beneath.
C C t As a general rule, damage free removable covering layers on security documents serve to temporarily hiding of alphanumeric indicia or information such as numbers, cc names, other groups of letters as well as combinations ~C~Cof numbers and names, but also of im:.ge information including colours. The covering layer must be perfectly opaque when seen in incident or traversing light.
Until now, the coverings of the indicated kind are produced by offset printing of a printing carrier on the whole surface, including the regions to be covered (termed as "cover areas"), and then printing by the method of screen printing transparent release layer which may be coloured at will, onto the cover areas. In a further screen printing step, the pigment containing covering layer forming a destroyable film, thus the true rub-off layer, is applied. The pigments are preferably metal particles, especially of aluminum, which could also be coloured by anodiskng, in order to obtain a -lA- DM/28.S. 89 i oo t 0 0 0 o 0 0 00 0 ooo 0000 0 00 0004 0 0o 00 0 b0000 0 0 0 00 o oeo 00 0 0 0 perfect opacity.
Screen printing inks are solvent containing systems which must be applied in very thick layers. Screen printing is a time consuming coating process, and after ink application, the solvent must be evaporated in the so called heat tunnel and the ink must be dried. The solvent which has been evaporated constitutes a stringent problem for most owners of such printing plants due to the severe clean air legislation in most countries.
The application of such high layer thicknesses has of course a great influence on the cojts of the final products.
Screen printing installations do not exist in most offset printing shops so that the products having been 15 printed by offset or typography must generally be shipped to another printing plant in order to apply the rub-off coatings. Therefore, there is already a long lasting need for a possibility to apply also the rub-off layer by typography or offset.
20 The realisation of this demand has been hindered by the technical prejudice that offset techniques would not be capable to produce covering layers. This opinion is based on all experiences made until now; it is an accepted fact that offset can only produce layer thicknesses of about 2 3 um per printing passage whereas by screen printing, layers of 20 em and more can be obtained.
It has now been found that this prejudice is based on known offset inks and their developments and improvements which are within the knowledge of the man skilled in the art.
The first and main object of this invention is to develop offset or typographic inks which will produce printing layers being perfectly opaque when seen in incident and traversing light.- 2 DM/28.8.89 1 D, i~~wi; i, 3C II IPII~ IC~ -r~-rr Another object of the invention is to provide such offset or typographic inks which form a system capable of producing opaque printed layers, which can be removed by rubbing, on flexible substrates.
Still another object of the invention is to provide such printing inks which can be printed on flexible substrates already printed with indicia or other information, and which will well adhere even on the already printed areas; the man skilled in the art knows that it is generally difficult to overprint such areas where the adherence of the overprinting is normally low, often unsufficient.
C And a further object of the invention is to provide curable offset or typographic ink systems giving opaque 15 covering layers with a minimum of printing passages and at low cost.
These objects and still others are met by the printing ink system of the invention which will be defined and described below in more detail.
The rub-off printing ink system of the invention now eliminates the drawbacks of the screen printing processes and the screen printing inks. The printing ink of the invention which is applied by the techniques of typography or offset and which gives printing layers capable of being removed by rubbing is composed of two partial systems which will be described below in detail.
The system comprises a release ink for the production of a release printing, and a covering ink for the production of an opaque, rubbing-off printing on said release printing, wherein the release ink and the covering ink are chemical curable inks printable by typographic or offset processes. The release ink contains at least one unsaturated, polymerizable compound as a binder and an oleophobic polymer or wax as a release agent. The covering ink, the second part-of the system, contains at 3 DM/28.8.89 0 least one unsaturatedr polymerizable compound as a binder and a metal pigment as an opacifier.
Printing can be accomplished by typography, dry offset or wet offset. All flexible substrates which can be printed .by these processes can be used as printing supports. The ink distinguishes by a perfectly appropriate printing behaviour on all known offset printing machines. The results which are obtained can be compared with the screen printing' quality regarding opacity and rubbing-off properties. The mechanical resistances of the covering metal pigmented printings are better than those of the screen printing inks. Furthermore, the printing speed is substantially higher than screen S' printing speed.
15 According to this invention, the release ink is a highly reactive system with chemical drying. Chemical It c drying, in contrast to physical drying only comprising evaporating a volatile solvent, is known to be a poly-
S
c merization and/or a curing reaction transforming liquid components into solid ones (see Klages, Lehrbuch der organischen Chemie, Berlin 1967, Vol. III, p. 394).
However, this does not necessarily mean that a chemically drying printing ink is totally free from (physically drying) volatile solvents.
Surprisingly, it has been found that already very thin release layers will be sufficient for the aimed purpose, namely the degree of rejection of the covering layer. Without willing to be bound by an explanation which could be limit the invention, there are indications that the release agents in the release printing ink will migrate during the polymerization of the binder towards the surfaces or will be displaced thereto since they are no longer compatible with the polymerized binder. In any case, the release effect is errhanced after polymerization.
4 DM/28.8.89 As a polymerizable system, modified unsaturated vegetable oils and fats can be used in the release ink as well as in the covering ink. Modifying components are for example colophonium and rosin optionally partially esterified, aromatic acids or aliphatic alcohols. In this case, the known metalic catalysts, especially cobalt or manganese naphthenate or octoate, can be used.
These inks may contain small amounts of high boiling solvents, about up to 10 as a viscosity controlling agent.
The invention further comprises release and covering inks whose drying is initiated by radiation, namely whose binders polymerize or reticulate under the influence of ultraviolet light (UV light) and which will be used in such cases where the already existing offset printing machine is equipped with an ultraviolet dryer.
These ink systems of the invention will be used on sheet and rotary printing machines. An important advantage of the printing systems of the invention is the immediate drying of all components and thus the possibility of immediate further processing.
As a general rule, the covering printing ink is a two component system. One component contains the polymerizable binder together with the accelerator and any other additives, and the other component is a metal pigment paste. Both components are normally mixed together immediately before printing according to a predeterminated mixing ratio.
As a pigment, very finely devided metals normally used in printing inks will the employed. Such metals are aluminum which may be coloured by anodisation, brass, but even copper, silver and gold for very high quality purposes.
The components to be used in the printing inks are generally known per se. Preferably, the release ink 5 DM/28.8.89 contains as a release agent, a polysilicon compound together with a microcrystalline wax, but these two substances can also be used separately. Particularly prefered are polysiloxane acrylates as release agents in the release ink.
The following examples are given only for illustration purposes. They will not limit the invention whose scope is defined by the claims. All amounts given in the examples are by weight and refer to the weight of the finished ink if not otherwise indicated.
Example 1 Air-drying infrared active printing ink 9 9 o et O 0 001 0 0 9t 0 C C A. Release ink The following components are mixed together: vegetable oil having an eleastearinic 20 acid content of about 75 by weight and modified with rosin (Oil CP): 25 to linseed oil refined and modified with acid, alcohol and rosin (Oil CL): 30 to 36% polysilicone and microcrystalline wax: 25 to cobalt naphthenate, manganese naphthenate 0,10 to 0,20% aromate free mineral oil, b.p. 2400 to 3100 C: 5 to 10% B Covering ink Oil CP: 5 to 15% Oil CL: 40 to 50% aluminum paste, calculated as Al 35 to 45% cobalt naphthenate, manganese naphthenate 0,1 to 0,2% i: L r'.
i r.' C c
I.
s; r i; r e a c~
E
P
"T s
B
B
r:.
rr; h i 6 DM/28.8. 89 LCi~l~LY LL-i rrr~E-rM1 aromate free mineral oil, h.p. 2400 to 3100 C: 5 to For printing, first the releasing ink is printed by wet offse. or preferably by typography and dry offset until a glossy printing is produced after drying. In most cases, two passages are sufficient. The printing is then stored for about 48 hours in order to complete curing by oxidation.
Thereafter, the covering ink is printed in the same manner where only one passage is generally sufficient.
After the chemical drying of the covering layer, the rub-off printing is ready for use.
Example 2 UV drying printing ink A Release ink prepolymer based on epoxy-, urethane-, polyester- or styrene-butadiene-acrylate, alone or in combination (prepolymer I): multifunctional acrylate monomers: polysiloxane acrylate: benzophenone amine based co-initiators acetophenone derivatives or benzil ketals: fluorinated organic salts: paraffine and teflon waxes 6% 6% 3% B Covering ink component 1: varnish prepolymer I: 7 80 to DM/22._8.89 CI_ multifunctional acrylate monomers: 0 to acetophenone derivatives or benzil ketals: 4 to 6% amine based co-initiators 4 to 6% component 2:metal paste aluminum bronze (gold or silver bronze): 60 to solvent and wetting agent: 40 to The drying of this system requires UV drying installations which are generally used presently in the Sfield of offset and typographic printing. The drying is effected by intermediate and/or final drying and is accomplished faster than the heat induced chemical Sdrying S: 15 In general, both inks of the system may be applied in dry offset processes and by typography, thicker covering layers being obtained in typography by means of nyloprint cliches.
First, the release ink is printed. According to the properties of the support, one or two applications may be necessary for complete covering. The application can be made in two printing units by wet-in-wet or wet-ondry, an intermediate drying being effected by UV. A sufficiently thick release layer is visible by gloss and 25 the filling degree of the printing and is a necessary i condition for the good rubbing effect of the metal pigmented covering layer printed afterwards.
Ucj When the release printing passes the UV dryer Sspontaneous drying, i.e. polymerization, of the layer is obtained. This layer will then be overprinted by the covering printing ink.
In order to obtain the covering ink ready for use, the varnish (component 1) is thoroughly mixed wi'th the metal paste (component 2) in -a weight ratio comprised -8- DM/28.8.89
~I~L~
between about 5:5 and about 8:2, preferably about 6:4 to about 7.3, aooording to thQ dQcirod covoring dogr9 In order to perfectly covering the underground colour which is already covered by the transparent release printing and which should correspond, as far as possible, to the tone of the metal ink, the application of the covering ink should be made in two printing units by wet-in-wet or wet-on-dry with an intermediate drying by UV.
The intermediate drying produces a thicker covering layer and a substantially better overall drying of the printings.
The printing inks of the invention can be modified in the scope of the claims and its aquivalents. For example, pigments or other dyestuffs can be incorporated in all inks. The nature and the amount of the components can be changed and adapted to special uses. It is only important that the inks must be capable of chemically drying. The substrate to be printed may be a paper or any other substrate, for example plastic sheets.
DM/28 i ii I i -9 DM/2Q. 8.89
Claims (6)
1. A printing ink system for the production of opaque printed areas, removable by rubbing, on flexible sub- strates, comprising a release ink for the production of a release printing, and a covering ink for the produc- tion of an opaque, rubbing-off printing on said release printing, wherein the release ink and the covering ink are chemically curable inks printable by typographic or offset processes, said release ink containing at least one unsaturated, polymerizable compound as a binder and an oleophobic polymer or wax as a release agent, and said covering ink containing at least one unsaturated, polymerizable compound as a binder and a metal pigment as an opacifier.
2. The printing ink of claim 1, wherein said covering ink further contains a small amount of an organic silicon compound as an agent facilitating the disinte- gration of the opaque covering printed layer.
3. The printing ink of claim 1, wherein both said release ink and said covering ink contain at least one modified polymerizable vegetable oil as a binder toge- ther with a metal naphthenate or octoate as a ac elera- Stor, said ink being capable of drying by oxidation.
4. The printing ink of claim 1, wherein both the release ink and the covering ink contain at least one acrylate monomer or prepolymer polymerizable by ultra- violet radiation, as a binder together with an amine as an accelerator, and the covering ink is a two component system being mixed just before use, one of the two components containing said polymerizable binder together with accelerator and any additives, and the other component comprising a metal pigment paste, said ink being capable of drying under ultraviolet radiation.
The printing ink of claim 3, wherein said -release ink contains a polysilicone -compound together with a 10 DM/28.8.89 1 I I I I I I B i: micro-crystalline wax, as a release agent.
6. The printing ink of claim 4, wherein said release ink contains at least one polysiloxane acrylate as a release agent. DATED THIS 31ST DAY OF AUGUST 1989 SICPA HOLDING SA By its Patent Attorneys: GRIFFITH HACK CO. Fellows Institute of Patent Attorneys of Australia. r 11 DM/28.8.89
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3318/88A CH674989A5 (en) | 1988-09-05 | 1988-09-05 | |
| CH3318/88 | 1988-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU4097389A AU4097389A (en) | 1990-03-08 |
| AU612884B2 true AU612884B2 (en) | 1991-07-18 |
Family
ID=4253394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU40973/89A Ceased AU612884B2 (en) | 1988-09-05 | 1989-08-31 | Printing ink system for the production of rub-off printings |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0358610B1 (en) |
| JP (1) | JPH02167372A (en) |
| KR (1) | KR900004890A (en) |
| AT (1) | ATE104324T1 (en) |
| AU (1) | AU612884B2 (en) |
| CA (1) | CA1330177C (en) |
| CH (1) | CH674989A5 (en) |
| DE (1) | DE58907445D1 (en) |
| ES (1) | ES2051383T3 (en) |
| FI (1) | FI100663B (en) |
| HK (1) | HK52396A (en) |
| NO (1) | NO306473B1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06164914A (en) * | 1992-11-20 | 1994-06-10 | Toppan Printing Co Ltd | Copy prevention method and copying machine |
| GB9610011D0 (en) * | 1996-05-14 | 1996-07-17 | British Printing Company The L | Improved process for the production of scratch-off cards |
| DE19832004C2 (en) * | 1998-07-16 | 2000-06-29 | Kanzan Spezialpapiere Gmbh | Scratch cards and process for their manufacture |
| AR090178A1 (en) * | 2012-03-23 | 2014-10-22 | Sicpa Holding Sa | PRINTING METHOD WITH OXIDATION DRY CALCOGRAPHIC INK AND UV-VIS CURABLE CALCOGRAPHIC INKS |
| DE102012010534A1 (en) * | 2012-05-29 | 2013-12-05 | Giesecke & Devrient Gmbh | Method for producing a value document |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406137A (en) * | 1965-04-29 | 1968-10-15 | Xerox Corp | Imaging material |
| US4095824A (en) * | 1976-07-01 | 1978-06-20 | Dittler Brothers, Inc. | Secure contest card |
| US4113895A (en) * | 1976-11-19 | 1978-09-12 | American Can Company | Method for producing multilayered coated substrate |
| DE3043742A1 (en) * | 1980-11-20 | 1982-06-24 | Agrob Anlagenbau GmbH, 8045 Ismaning | METHOD FOR PRODUCING DECALS, PRINT MEDIA AND VARNISHES THEREFOR |
| CA1183734A (en) * | 1983-02-09 | 1985-03-12 | Eli A. Ganho | Process and compositions for lithographic printing in multiple layers |
| DE3614653A1 (en) * | 1986-04-30 | 1987-11-05 | Buchdruckerei Lorenz Winter Gm | Continuous flexographic printing with silver rub off ink - prepd. by making paste of aluminium powder and latex and adding waxy release agent |
| US4756760A (en) * | 1986-09-15 | 1988-07-12 | Basf Corporation | Drying oil soap for intaglio inks |
-
1988
- 1988-09-05 CH CH3318/88A patent/CH674989A5/de not_active IP Right Cessation
-
1989
- 1989-08-31 CA CA000610066A patent/CA1330177C/en not_active Expired - Fee Related
- 1989-08-31 AU AU40973/89A patent/AU612884B2/en not_active Ceased
- 1989-09-01 FI FI894138A patent/FI100663B/en active IP Right Grant
- 1989-09-04 NO NO893544A patent/NO306473B1/en unknown
- 1989-09-04 JP JP1229094A patent/JPH02167372A/en active Pending
- 1989-09-04 DE DE58907445T patent/DE58907445D1/en not_active Expired - Fee Related
- 1989-09-04 ES ES89810658T patent/ES2051383T3/en not_active Expired - Lifetime
- 1989-09-04 AT AT89810658T patent/ATE104324T1/en not_active IP Right Cessation
- 1989-09-04 EP EP89810658A patent/EP0358610B1/en not_active Expired - Lifetime
- 1989-09-04 KR KR1019890012736A patent/KR900004890A/en not_active Application Discontinuation
-
1996
- 1996-03-21 HK HK52396A patent/HK52396A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0358610A3 (en) | 1991-12-27 |
| FI894138A0 (en) | 1989-09-01 |
| EP0358610B1 (en) | 1994-04-13 |
| KR900004890A (en) | 1990-04-13 |
| FI100663B (en) | 1998-01-30 |
| ES2051383T3 (en) | 1994-06-16 |
| JPH02167372A (en) | 1990-06-27 |
| AU4097389A (en) | 1990-03-08 |
| HK52396A (en) | 1996-03-29 |
| CA1330177C (en) | 1994-06-14 |
| DE58907445D1 (en) | 1994-05-19 |
| NO893544L (en) | 1990-03-06 |
| FI894138A (en) | 1990-03-06 |
| CH674989A5 (en) | 1990-08-15 |
| NO893544D0 (en) | 1989-09-04 |
| ATE104324T1 (en) | 1994-04-15 |
| EP0358610A2 (en) | 1990-03-14 |
| NO306473B1 (en) | 1999-11-08 |
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