EP1180173A1 - Bedruckte sowie bedruckbare substrate - Google Patents
Bedruckte sowie bedruckbare substrateInfo
- Publication number
- EP1180173A1 EP1180173A1 EP00915089A EP00915089A EP1180173A1 EP 1180173 A1 EP1180173 A1 EP 1180173A1 EP 00915089 A EP00915089 A EP 00915089A EP 00915089 A EP00915089 A EP 00915089A EP 1180173 A1 EP1180173 A1 EP 1180173A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- particularly preferably
- pressure
- filmable
- fixing layer
- 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.)
- Granted
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
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
- B41M5/506—Intermediate layers
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/42—Coatings with pigments characterised by the pigments at least partly organic
Definitions
- the present invention relates to printable and printed substrates, in particular special papers, processes for their production, and their uses.
- WO 97/18090 (Kimberly-Clark) describes a printable special paper which has a filmable layer arranged on a carrier material and which is intended to be filmed over a large area after printing using heat and / or pressure. The print is then essentially irreversibly bound and protected behind the film.
- a special paper based on the essentially same idea is also described in DE 196 28 342 (Sihl GmbH, Düren) and EP 0 826 823 by the applicant.
- the carrier material and the formulation of the filmable layer are chosen in the first font so that the filmed paper is particularly resistant to the influence of water.
- the specialty papers described above have a number of disadvantages.
- the special papers have to be kept at temperatures of 140 ° C to 180 ° C for a period of 20-60s for complete filming. Such conditions can only be set with very special heating presses or with laminators of the highest price range.
- the special papers are no longer planar after the filming, or a curvature of the papers occurs during filming in the laminator and the papers therefore occasionally die Have a tendency to get stuck in the laminator.
- the object of the invention is to specify how prints, in particular inkjet prints, more abrasion-resistant, smudge-proof, water-resistant, brilliant, light-resistant and finally also more resistant can be made in the sense of increased security against forgery.
- the substrate should also be inexpensive to manufacture and using conventional machines.
- the subject of the invention is a printable substrate according to claim 1 and a method for producing such a substrate according to claim 7.
- the invention further relates to a printed substrate according to claim 10 and a method for producing such a substrate according to claim 12.
- Claims 17-19 relate to special uses of the substrates according to the invention.
- the essence of the present invention is therefore to apply e.g. first apply a pressure-fixing layer from paper on at least one side, and apply a filmable coating containing organic pigments (plastic pigments) and binders to this pressure-fixing layer.
- This filmable coating is intended to be filmed after printing by supplying at least heat, but preferably heat and pressure.
- the ink penetrates into the porous filmable coating during printing, penetrates it and is bound on or in the fixing layer when the pressure fixing layer arranged between the carrier material and the filmable layer is reached. In other words, before filming, part of the ink is in the filmable layer, and the other, usually larger part of the ink is in resp. bound on the pressure fixing layer.
- Other printing inks such as those used in offset processes, and which cannot penetrate into the filmable coating due to their physicochemical properties, remain essentially on the surface of the filmable coating after the printing process.
- Filming the filmable layer means that the print subsequently behind or in the filmed layer is more abrasion-resistant, smudge-proof, water-resistant, brilliant and light-resistant.
- the use of the pressure-fixing layer means that if there is residual porosity after filming or microscopic cracks in the filmed layer, the print is still water-resistant because the pressure-fixing layer binds the ink under the film.
- the applied printed image appears to the viewer with increased brilliance. It has also been shown that print images produced according to the invention are substantially more lightfast than conventional inkjet prints. Additional and expensive laminations, such as are sometimes made with inkjet papers, are superfluous. Other printing inks remaining essentially on the surface after the printing process are also partially welded in by the filming and are more strongly bound.
- a first preferred embodiment is characterized in that the filmable coating contains the following components:
- binder 1-30% by weight, particularly preferably 2-10% by weight, of binder
- UV stabilizers - 0- 5% by weight
- the organic pigments having a particle size preferably in the range from 0.1 to 10 ⁇ m, more preferably in the range from 0.5 to 10 ⁇ m, particularly preferably in the range from 0.5 to 2 ⁇ m, preferably styrenes, butadienes, acrylates and their copolymers or their copolymers Combinations thereof with glass transition temperatures in the range between 40 ° C and 90 ° C, but especially between 50 ° C-70 ° C, as film-forming aids styrenes, butadienes, acrylates and their copolymers or combinations thereof with glass transition temperatures below room temperature, but especially between (-50 ° C) - (+ 20 ° C), and the binder used is preferably starch, polyvinyl alcohol, polyvinylpyrrolidone or a plastic dispersion containing acrylate, styrene or PVAC.
- Such a formulation of the filmable layer allows filming temperatures below or in the range of 100 ° C. These are conditions that can be easily set with cheap laminators. However, despite the low film-forming temperature, the formulation still allows a coating process for the substrate in which there is no premature filming of the coating when the application of the filmable layer dries, and moreover the substrate does not have to be stored under special conditions such as under cooling before printing. Furthermore, the low filming temperature also has the advantage that the carrier material does not dry out to the same degree during filming as is the case at temperatures above 100 ° C. In this way, the substrates remain flat after filming and the risk of jams in the laminator is reduced. It is shown that, in particular when using the above, deep-melting organic pigments, the use of the pressure fixing layer results in a precise and waterproof printed image.
- the pressure-fixing layer is cationic and the ink is absorbent, particularly preferably water-resistant.
- the ink is actively removed from the layer sucked down and, since inks are usually anionic in character, precipitated and fixed by the cationic portions of the pressure-fixing layer.
- the printed image appears both with a high resolution, and there is also an increase in water resistance through the use of an already waterproof pressure-fixing layer.
- silica or aluminum oxide hydrates preferably being the inorganic pigment
- a vinylamine polymer being the cationic polymer, N- Vinylamine-formamide polymer, a combination or copolymers thereof and a polyacrylate or polyvinyl alcohol is preferably used as the binder.
- inorganic pigments leads to the desired suction power of the pressure-fixing layer, and the use of a cationic resin allows the permanent, water-resistant precipitation and local fixing of anionic inks in the layer.
- FIG. 1 shows a section through the layered structure of the proposed substrate 13.
- a carrier material 12 which as a rule can be paper, but possibly also a pretreated or partially synthetic paper or a film, is here preferably on the entire surface with a pressure-fixing layer 11 coated.
- the substrate 13 can also consist of a carrier material 12 coated on both sides with the layers 11 and 10. It can then be printed and filmed on both sides.
- the substrate 13 should in particular be filmable with conventional, if possible in particular inexpensive laminators.
- Inexpensive laminators for the continuous process which are available usually have at least one pair of counter-rotating rollers, between which the laminate is guided Laminating paper or the film heated before penetration between the rollers.
- the cheap laminators usually only allow the setting of a single predetermined temperature, normally in the range from 120 ° C. to 130 ° C., since cooling or special materials for rollers and Housing are necessary
- the pressure between the rollers can usually not be changed, and the transport speed, if at all, can often only be set between a few discrete values.
- Conventional filmable and printable substrates according to the prior art can be used in such lam Filming of the inators usually only unsatisfactorily, since higher filming temperatures and / or higher pressure are necessary, and furthermore the papers tend to bulge after filming
- the three-layer laminate shown in FIG. 1 now solves this problem area in that the ink is bound by a pressure-fixing layer 11 after at least partial penetration into the porous filmable layer 10 just be eliminated.
- the inks, or corresponding colors, which due to their physicochemical properties are able to penetrate into the filmable layer 10, are sucked down and bound locally on the fixing layer 11.
- the water resistance remains so high that there is no blurring of the ink.
- Other printing inks such as those used in offset processes and which cannot penetrate into the filmable coating due to their physicochemical properties, can also be applied, but remain essentially on the surface of the filmable coating after the printing process.
- carrier material 12 With regard to the type of carrier material 12 and its basis weight, there are no special requirements. Normal cellulose or cotton papers or combinations thereof with typical basis weights in the range between 80 g / m 2 and 300 g / m 2 are suitable. For prints of photographic representations it is preferred to use papers with a higher basis weight in the upper part of the specified range.
- the structure is the same for applications in the security area, but papers with additional security elements (such as watermarks, chemical security agents or paint applications containing iridescent pigments) in the weight range of 70-150 g / m 2 are preferably used here.
- the pressure fixing layer 11 is advantageously already applied in a step integrated in the paper production process, for example using a film press.
- the layer 11 should be absorbent so that the ink is actively absorbed by the layer 11 during the printing process from the filmable coating 10 onto the pressure fixing layer 11.
- the layer 11 should fix the ink and bind it waterproof.
- Conventional inks are mostly anionic in nature, and fixing is most easily achieved with cationic substances to which the ink components are locally bound in a precipitation.
- composition of the pressure fixing layer 11, formulated for application as an aqueous dispersion has e.g. proven suitable:
- Aerosil K315 (Degussa AG, DE) is a brilliant, white, absorbent, highly dispersed pyrogenic silicon dioxide. It is in the form of a 15% aqueous dispersion of the silica powder. Catiofast * PR 8106 (BASF, Ludwigshafen, DE) is actually an AOX-free wet strength agent for the production of wet-strength paper qualities in the neutral range. It is a light to dark yellow aqueous, 22% solution of a polymer based on vinylamine and N-vinyl-formamide and acts as a cationic, water-soluble, high-molecular resin for fixing anionic inks. It also acts as a binder.
- Plextol E220 Polymer Latex GmbH & Co KG, Dormagen, DE is a 60% dispersion of a self-adhesive acrylic polymer and acts as a binder.
- Syloid 244 WR Grace & Co, USA is a powdered matting agent made of silica, it also reduces the viscosity of the dispersion for the coating.
- the grain size can be set to ⁇ 120 ⁇ m or smaller if required.
- the dispersion has a pH in the range of 7.5.
- the layer should be in the range of 6-10 g / m 2 , in the above-mentioned formulation 8-8.5 g / m 2 are ideally applied.
- the filmable coating 10 should have a minimum film-forming temperature which, on the one hand, enables filming at the lowest possible temperatures, but nevertheless permits an efficient drying process, ie meaningful drying temperatures for drying the filmable coating 10.
- the following composition of the filmable layer 10 formulated for application as an aqueous dispersion has proven to be suitable, for example:
- Baystal Polymer Latex GmbH & Co KG, Dormagen, DE is a 50% colloidal dispersion made from a copolymer of butadiene, styrene and acrylic acid and a low proportion of emulsifier. The styrene content is approximately 78%. Baystal forms the major part of filmable organic polymer with a glass transition temperature in the range of 50 ° C-60 ° C. These are pigment beads, such as those formed in emulsion polymerization, with a size in the range of 0.5 - 1 ⁇ m.
- Gohsenol (Nippon Gohsei, Osaka, JP) and Mowiol (Clariant, Muttenz, CH) are aqueous solutions of polyvinyl alcohol, serve as binders and have a water-absorbing effect.
- particularly long-chain polyvinyl alcohols can advantageously be used.
- Litex (Polymer Latex GmbH & Co KG, Dormagen, DE) is an aqueous anionic 50% dispersion of a carboxylated styrene-butadiene copolymer (copolymer of butadiene, styrene and acrylic acid), which is used as a binder for coating colors in the paper industry.
- Litex has a glass transition temperature of approx. -6 ° C and serves here as a film-forming aid and to increase the gloss.
- Plextol (Polymer Latex GmbH & Co KG, Dormagen, DE) also serves with a glass transition temperature in the range of -47 ° C.
- Plextol is a 60% dispersion of a self-adhesive acrylic polymer.
- Tinuvin (Ciba SC, Basel, CH) is an optional UV stabilizer. It supports, among other things, the light fastness of the colors fixed in the underlying pressure fixing layer 11.
- plasticizers, inorganic pigments or other additives can also be added. If the above constituents of the filmable layer 11 are mixed, particles of a size in the range of 20 ⁇ m are formed and the dispersion has a pH in the range of 8.
- the coating formulation can be applied offline or inline by means of a doctor blade application, a screen engraving roller, an air brush or in a casting process onto the substrate material 12 pre-coated with the pressure-fixing layer 11.
- the layer thickness should be chosen with the above formulation in the range of 9-12 g / m 2 . If you choose thicker layers, a higher temperature must usually be selected for filming; with a thinner coating, the protective function of the layer is reduced.
- the finished non-filmed substrate can be printed using a classic printing process, but is particularly suitable for printing using an inkjet process.
- the ink penetrates into or through the porous filmable layer 10 and is sucked in by the pressure-fixing layer 11 and fixed locally on it due to the cationic character of the layer 11.
- Those types of printing inks which cannot penetrate into the filmable coating remain, as already mentioned above, essentially on the surface of the filmable coating after the printing process.
- the paper can be passed through a laminator at a local laminating temperature in the range of 100 ° C without further processing. If the temperature of the laminator cannot be adjusted, the local laminating temperature can be adjusted by the transport speed through the laminator.
- pressure is preferably used at the same time for filming in addition to heat.
- a pressure in the range between 0.5-5 bar in a static press or a corresponding line pressure in a continuous laminator has proven to be sufficient and cheap. It is also conceivable to carry out the filming at a low temperature but with a very high pressure, but in most cases the time period during which the pressure is applied must then be increased significantly.
- Films with a roughness between 0.01 - 5 ⁇ m are suitable for "matt" surfaces and those with a roughness less than 0.01 ⁇ m for "glossy” surfaces. After filming, the film must of course be easily removable from the filmed surface. Polyester or polyamide films (such as GRILON 6, 10, 12) are therefore suitable. Siliconized papers are also possible covers for the lamination process, and it turns out that especially not too thick papers with thick siliconization contribute to a good and even filming. For example, it is advantageous to design a so-called carrier in which the substrate to be filmed can be inserted and the inner surface of which has the desired surface structure. The substrate is placed in the carrier for the lamination process, and after the lamination, the carrier is removed again from the filmed paper. Such a carrier can ideally be used several times.
- rollers of the laminator it is also possible to coat the rollers of the laminator directly in a suitable manner. Teflon or ceramic materials are likely to be suitable for rolls of continuous filming devices with a view to good releasability.
- the invention is therefore particularly suitable for use in the security field, for example for the production of ID cards, passports, certificates or the like.
- the security paper can first be printed in the form of a classic printing process, such as an offset process, and then individualized by the end user with simple inkjet printing and then filmed in a laminator.
- the offset printing ink remains essentially on the surface, but is also partially welded in during filming and fixed. It is also conceivable to combine the substrate with the use of conventional film pockets, in which the paper is embedded and laminated, for outdoor applications or similar applications in which extremely pronounced protection of the printed image is necessary.
Landscapes
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
- Ink Jet (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH84099 | 1999-05-05 | ||
CH84099 | 1999-05-05 | ||
PCT/CH2000/000232 WO2000068501A1 (de) | 1999-05-05 | 2000-04-25 | Bedruckte sowie bedruckbare substrate |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1180173A1 true EP1180173A1 (de) | 2002-02-20 |
EP1180173B1 EP1180173B1 (de) | 2004-06-16 |
Family
ID=4196438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00915089A Expired - Lifetime EP1180173B1 (de) | 1999-05-05 | 2000-04-25 | Bedruckte sowie bedruckbare substrate |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1180173B1 (de) |
AT (1) | ATE269440T1 (de) |
AU (1) | AU3653000A (de) |
CA (1) | CA2372770A1 (de) |
DE (1) | DE50006826D1 (de) |
WO (1) | WO2000068501A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11046862B2 (en) | 2017-03-01 | 2021-06-29 | Avery Dennison Corporation | Print receptive topcoat |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2352681A (en) | 1999-08-04 | 2001-02-07 | Ilford Imaging Uk Ltd | Ink jet printing method |
DE10055592A1 (de) | 2000-11-09 | 2002-05-23 | Basf Ag | Papierstreichmassen |
DE10161158A1 (de) * | 2001-02-23 | 2002-09-05 | Basf Ag | Streichmassen für Ink-Jet-Aufzeichnungsmaterialien |
ES2238895B1 (es) * | 2003-02-11 | 2007-02-16 | Industrias De Hijos De Antonio Fabregas, S.A. | Papel de seguridad. |
GB2573272A (en) | 2018-04-04 | 2019-11-06 | Innovation Tech Coatings Limited | An image-receptive coating for high-speed printing applications |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2856285B2 (ja) * | 1989-11-27 | 1999-02-10 | 日本製紙株式会社 | 印刷用塗被紙およびその製造方法 |
WO1997018090A1 (en) * | 1995-11-13 | 1997-05-22 | Kimberly-Clark Worldwide, Inc. | Image-receptive coating |
DE19628342C2 (de) * | 1996-07-13 | 1999-03-04 | Sihl Gmbh | Aufzeichnungsmaterial und dessen Verwendung für den Tintenstrahldruck |
EP0826823A1 (de) * | 1996-08-29 | 1998-03-04 | - Sihl - Zürcher Papierfabrik An Der Sihl | Spezialpapier |
EP0858905B1 (de) * | 1997-02-18 | 2002-11-27 | Canon Kabushiki Kaisha | Aufzeichnungsmaterial, Verfahren zu dessen Herstellung und Tintenstrahlgedruckten Bildern unter Verwendung dieses Materials |
-
2000
- 2000-04-25 AU AU36530/00A patent/AU3653000A/en not_active Abandoned
- 2000-04-25 AT AT00915089T patent/ATE269440T1/de not_active IP Right Cessation
- 2000-04-25 WO PCT/CH2000/000232 patent/WO2000068501A1/de active IP Right Grant
- 2000-04-25 CA CA002372770A patent/CA2372770A1/en not_active Abandoned
- 2000-04-25 DE DE50006826T patent/DE50006826D1/de not_active Expired - Fee Related
- 2000-04-25 EP EP00915089A patent/EP1180173B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0068501A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11046862B2 (en) | 2017-03-01 | 2021-06-29 | Avery Dennison Corporation | Print receptive topcoat |
Also Published As
Publication number | Publication date |
---|---|
DE50006826D1 (de) | 2004-07-22 |
AU3653000A (en) | 2000-11-21 |
CA2372770A1 (en) | 2000-11-16 |
EP1180173B1 (de) | 2004-06-16 |
ATE269440T1 (de) | 2004-07-15 |
WO2000068501A1 (de) | 2000-11-16 |
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