CA2460815A1 - Method for producing a foil material provided with an embossed hologram, as well as a foil material - Google Patents
Method for producing a foil material provided with an embossed hologram, as well as a foil material Download PDFInfo
- Publication number
- CA2460815A1 CA2460815A1 CA002460815A CA2460815A CA2460815A1 CA 2460815 A1 CA2460815 A1 CA 2460815A1 CA 002460815 A CA002460815 A CA 002460815A CA 2460815 A CA2460815 A CA 2460815A CA 2460815 A1 CA2460815 A1 CA 2460815A1
- Authority
- CA
- Canada
- Prior art keywords
- foil material
- lubricant
- foil
- layer
- metal 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.)
- Abandoned
Links
- 239000000463 material Substances 0.000 title claims abstract description 59
- 239000011888 foil Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 31
- 238000004049 embossing Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims description 9
- 239000005030 aluminium foil Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims 1
- 239000004922 lacquer Substances 0.000 description 16
- -1 polyethylene Polymers 0.000 description 14
- 239000001993 wax Substances 0.000 description 11
- 235000014113 dietary fatty acids Nutrition 0.000 description 9
- 239000000194 fatty acid Substances 0.000 description 9
- 229930195729 fatty acid Natural products 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 238000001465 metallisation Methods 0.000 description 4
- 239000005022 packaging material Substances 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 2
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000011973 solid acid Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 description 1
- 229940114072 12-hydroxystearic acid Drugs 0.000 description 1
- ZVTDEEBSWIQAFJ-KHPPLWFESA-N 2-hydroxypropyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(C)O ZVTDEEBSWIQAFJ-KHPPLWFESA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- GWFGDXZQZYMSMJ-UHFFFAOYSA-N Octadecansaeure-heptadecylester Natural products CCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC GWFGDXZQZYMSMJ-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- ULBTUVJTXULMLP-UHFFFAOYSA-N butyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCC ULBTUVJTXULMLP-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- FIASKJZPIYCESA-UHFFFAOYSA-L calcium;octacosanoate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCCCCCCCCCCCC([O-])=O FIASKJZPIYCESA-UHFFFAOYSA-L 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- MQKMBXOZOISLIV-UHFFFAOYSA-N dioctadecyl benzene-1,2-dicarboxylate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCCCCCCCCCCCC MQKMBXOZOISLIV-UHFFFAOYSA-N 0.000 description 1
- GYFBKUFUJKHFLZ-UHFFFAOYSA-N dioctadecyl hexanedioate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCCCC(=O)OCCCCCCCCCCCCCCCCCC GYFBKUFUJKHFLZ-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- YQEMORVAKMFKLG-UHFFFAOYSA-N glycerine monostearate Natural products CCCCCCCCCCCCCCCCCC(=O)OC(CO)CO YQEMORVAKMFKLG-UHFFFAOYSA-N 0.000 description 1
- RZRNAYUHWVFMIP-HXUWFJFHSA-N glycerol monolinoleate Natural products CCCCCCCCC=CCCCCCCCC(=O)OC[C@H](O)CO RZRNAYUHWVFMIP-HXUWFJFHSA-N 0.000 description 1
- SVUQHVRAGMNPLW-UHFFFAOYSA-N glycerol monostearate Natural products CCCCCCCCCCCCCCCCC(=O)OCC(O)CO SVUQHVRAGMNPLW-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 239000004206 montan acid ester Substances 0.000 description 1
- 235000013872 montan acid ester Nutrition 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- UTOPWMOLSKOLTQ-UHFFFAOYSA-N octacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O UTOPWMOLSKOLTQ-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- NKBWPOSQERPBFI-UHFFFAOYSA-N octadecyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCCCCCC NKBWPOSQERPBFI-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
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
- D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/04—Processes or apparatus for producing holograms
- G03H1/20—Copying holograms by holographic, i.e. optical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2203/00—Decoration means, markings, information elements, contents indicators
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
- D21H11/04—Kraft or sulfate pulp
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/30—Foil or other thin sheet-metal making or treating
- Y10T29/301—Method
Abstract
The invention relates to a method for producing a foil material, provided wi th an embossed hologram. Said method comprises the following steps: optionally metallizing said material, applying a lubricant and then directly embossing said material, the embossed surface remaining the material top layer. Said invention also relates to a foil material having the following structure: a metal layer, provided with an embossed hologram, and a lubricant layer, whic h is at least partially applied to said metal layer, whereby said material top layer is exclusively formed by the metal layer and/or the lubricant layer.</ SDOAB>
Description
M_ ethod for Producing a Foil Material Provided with an Embossed Hologram, as well as a Foil Material Field of the Invention The invention relates to a method for producing a foil material provided with an embossed hologram, as well as such a foil material.
It is becoming more and more common in particular in the field of packaging technology to distinguish packagings by means of specific design features from competitive products so as to make it easier to recognise, in particular, imitations of trademark products.
Holograms or holographic structures, for example, are hereby applied to the packaging material, in particular embossed therein, in order to make it possible to distinguish the packaging material and the product packaged therewith from other products.
Prior Art Known from DE 37 44 650 A1 is a holographic embossing method, in which a substrate is provided with a lacquer layer, then metallisation of the material is carried out and finally a hologram is embossed through the metallisation. Lacquers having specific properties are required for such a method. Known for this purpose are lacquers which cure under UV
light, said lacquers not being completely cured when embossing is carried out so that the embossing structure can be applied. The material is then normally provided with a protective lacquer and it can subsequently be cut into narrow rolls. It is alternatively known to carry out metallisation after embossing of the partially cured lacquer has taken place. The protective lacquer applied as the topmost layer is necessary to protect the fine embossing structures and to generate the required abrasion resistance and gliding property of the material. The known holographic embossing methods have the disadvantage that they always require an additional, separate production step during the manufacturing process. In particular, the embossing process has to occur before the covering protective lacquer is applied. The problem arises here that it is uneconomical to produce small lot sizes with varying embossed motifs since metallisation and coating with lacquer can only be carried out economically for large lot sizes, e.g. large rolls.
This disadvantage also applies to the production of a packaging material according to DE
299 00 043 U 1 and DE 299 04 872 U 1. The packaging material described therein also comprises a plastic layer as the outermost layer, which leads to the cited problems in view of economicalness.
Description of the Invention The object of the invention is to create an economically improved method for producing a foil material provided with an embossed hologram, as well as a foil material which can be economically produced.
This object is solved by the method according to patent claim 1 and the foil material according to patent claim 5.
Within the scope of the method according to the invention, the foil material is first of all optionally metallised. It is noted at this point that the method according to the invention is basically suitable for metal foils, for example aluminium foils, for metal-paper composites, in particular aluminium-paper composites, and also for paper which is to be correspondingly metallised in a first method step, i.e. is to be provided with a thin metal layer. A lubricant is then applied within the scope of the method according to the invention.
Embossing of the metallised or metal layer occurs directly thereafter. In other words, the step normally required according to the prior art of applying a suitable lacquer in which the embossing structures are formed, is no longer required. Embossing is rather carried out directly on the metal layer. The lubricant hereby ensures that the required structures can be formed without the risk of the metal peeling off. Embossing essentially occurs directly on the finished foil material since embossing does not occur on a lacquer which still has to be subsequently cured, nor is a subsequently applied cover or protective lacquer required. It has shown during tests that with the exception of the lubricant layer, which is also present at least in residual amounts following embossing, the embossed surface can form the topmost layer of the foil material produced according to the invention.
Coating with a protective lacquer is no longer necessary. The method according to the invention thus achieves a noticeable economic improvement. As regards the foil material to be processed according to the invention, it is noted that this material can be material according to EP 0 676 503 Al, and the entire disclosure of this document concerning the material used according to the invention is herewith made the subject matter of the present application. Since the material mentioned therein already comprises a lubricant coating, it is obvious that a further lubricant coating is not absolutely necessary, but is, however, possible at any time.
A lubricant having a softening point which lies above the temperature occurring during embossing is preferably selected as the lubricant. Efficient production can hereby be ensured in an advantageous manner. In connection with the present invention, the usable lubricants preferably belong to the following chemical classes: paraffins, polyethylene waxes, polypropylene waxes modified with malefic anhydride, ester and acid waxes, amide waxes, polytetrafluoroethylene waxes, polytetrafluoroethylene/polyethylene waxes, ethyl vinyl acetate copolymer waxes, natural waxes, fatty alcohols, fatty acids, metal soaps, fatty acid esters, solid acid amides, siloxanes and sulphated oils. According to the invention, they can be used as individual compounds or in mutually compatible mixtures.
Most lubricants are commercially available and can be used directly without any further preparation.
If the lubricant is a paraffin, it is preferably selected from predominantly branched-chain liquid hydrocarbons or from predominantly straight-chain solid hydrocarbons.
Polyethylene waxes as lubricants are preferably selected from polyethylenes having an average molecular weight of 2000 to 12000 or from air-oxidised, low molecular weight polyethylenes.
A preferred natural wax is carnauba wax.
Typical representatives of fatty acids as lubricants are stearic acid, 12-hydroxystearic acid and montan acids (mixture of long-chain carboxylic acids having 26 to 33 carbon atoms).
Metal soaps are also suitable as lubricants. Calcium stearate, magnesium stearate and zinc stearate are preferably used.
Fatty acid esters as lubricants are preferably selected from fatty acid esters of short-chain, monohydric alcohols, fatty acid esters of long-chain, monohydric alcohols, glycol fatty acid esters, glycerol fatty acid esters, montan acid ester waxes, solid or liquid high molecular weight mixed esters or esters of polybasic carboxylic acids.
Typical representatives of this class of compound are n-butyl stearate, stearyl stearate, propylene glycol monooleate, glycerol monooleate, glycerol monostearate, distearyl adipate, distearyl phthalate, polycondensates of pentaerythrite + adipic acid + oleic acid or stearic acid, and esters of montan acids mixed with free montan acids and calcium montanate.
A solid acid amide as the lubricant is advantageously a fatty acid amide selected from oleic acid amide, erucic acid amide or stearic acid amide, or N,N'-bis-stearoyl-ethylenediamine.
The lubricant is normally applied in that it is applied as a dispersion and then dried. The solvent used hereby evaporates so that a comparatively solid lubricant coating remains.
As regards the embossing of a hologram within the scope of the method according to the invention, it is noted that in contrast to another embossing wherein the entire material is deformed, only a deformation of the surface hereby occurs. In other words, the unprocessed "rear side" remains largely even when a hologram is embossed. A
typical material thickness for the foil material used here is approximately 50 Vim. A
spacing of the embossing lines in the range of less than one micrometer, e.g. 0.5 Vim, is also typical for the embossing of a hologram. Finally, it is preferred within the scope of the invention for embossing to be carried out in a continuous method, for example by rotation, i.e. by means of rotating rollers.
Preferred developments of the method according to the invention are described in claims 2 to 4.
Particularly good experiences have been had within the scope of the method according to the invention with paper which is firstly metallised. The method according to the invention can furthermore be applied in an advantageous manner to metal, in particular aluminium, foils or strips. Finally, a foil material having an embossed hologram, which consists of a metal-paper composite, in particular an aluminium-paper composite, can also be produced within the scope of the method. Such a composite material is to be coated with lubricant on the foil side, i.e. the metal side, within the scope of the method according to the invention, and can also be processed according to the invention without the need for a lacquer coating and can be made into a foil material having an embossed hologram.
It has proven to be advantageous for the application of the lubricant to apply the lubricant in an amount in the order of magnitude of 0.02 g/mz. The required processability, in particular the possibility of embossing, can be hereby ensured in an economically favourable manner.
WO 03/027775 Al 5 PCT/EP02/09139 Since a subsequent application of a protective lacquer which possibly requires curing is not necessary according to the method of the invention, a cutting process is preferably carried out within the scope of the method according to the invention in a single operation together with embossing, which has further economic advantages. The material according to the invention can, in particular, be produced on a combined embossing and cutting machine, in particular a roll cutting machine. The material can then be wound with little effort to at least one roll.
The aforementioned object is furthermore solved by the foil material described in claim 5.
Said foil material comprises a metal layer provided with an embossed hologram as well as a lubricant layer which is applied to the finished foil material at least partially on said metal layer. The method according to the invention is reflected in the associated foil material in that the topmost layer of the material is exclusively formed by the metal layer and/or the lubricant layer. In other words, according to the invention, no protective lacquer is needed on the foil material. A material which can be produced in an extremely economical manner is thus created, which can, for example, be used as an inner foil for cigarette packets.
Preferred embodiments of the foil material according to the invention can be found in the subsequent claims. Essentially in accordance with the embodiments of the method according to the invention, it is preferred for the foil material to be a metallised paper, a metal foil, in particular an aluminium foil, or a metal-paper composite, in particular an aluminium-paper composite.
The required processability for producing the foil material according to the invention can be ensured in that the finished material has a lubricant coating in the order of magnitude of 0.02 g/m2.
It is finally preferred from the point of view of economics and transport for the foil material according to the invention to be a roll of material.
It is becoming more and more common in particular in the field of packaging technology to distinguish packagings by means of specific design features from competitive products so as to make it easier to recognise, in particular, imitations of trademark products.
Holograms or holographic structures, for example, are hereby applied to the packaging material, in particular embossed therein, in order to make it possible to distinguish the packaging material and the product packaged therewith from other products.
Prior Art Known from DE 37 44 650 A1 is a holographic embossing method, in which a substrate is provided with a lacquer layer, then metallisation of the material is carried out and finally a hologram is embossed through the metallisation. Lacquers having specific properties are required for such a method. Known for this purpose are lacquers which cure under UV
light, said lacquers not being completely cured when embossing is carried out so that the embossing structure can be applied. The material is then normally provided with a protective lacquer and it can subsequently be cut into narrow rolls. It is alternatively known to carry out metallisation after embossing of the partially cured lacquer has taken place. The protective lacquer applied as the topmost layer is necessary to protect the fine embossing structures and to generate the required abrasion resistance and gliding property of the material. The known holographic embossing methods have the disadvantage that they always require an additional, separate production step during the manufacturing process. In particular, the embossing process has to occur before the covering protective lacquer is applied. The problem arises here that it is uneconomical to produce small lot sizes with varying embossed motifs since metallisation and coating with lacquer can only be carried out economically for large lot sizes, e.g. large rolls.
This disadvantage also applies to the production of a packaging material according to DE
299 00 043 U 1 and DE 299 04 872 U 1. The packaging material described therein also comprises a plastic layer as the outermost layer, which leads to the cited problems in view of economicalness.
Description of the Invention The object of the invention is to create an economically improved method for producing a foil material provided with an embossed hologram, as well as a foil material which can be economically produced.
This object is solved by the method according to patent claim 1 and the foil material according to patent claim 5.
Within the scope of the method according to the invention, the foil material is first of all optionally metallised. It is noted at this point that the method according to the invention is basically suitable for metal foils, for example aluminium foils, for metal-paper composites, in particular aluminium-paper composites, and also for paper which is to be correspondingly metallised in a first method step, i.e. is to be provided with a thin metal layer. A lubricant is then applied within the scope of the method according to the invention.
Embossing of the metallised or metal layer occurs directly thereafter. In other words, the step normally required according to the prior art of applying a suitable lacquer in which the embossing structures are formed, is no longer required. Embossing is rather carried out directly on the metal layer. The lubricant hereby ensures that the required structures can be formed without the risk of the metal peeling off. Embossing essentially occurs directly on the finished foil material since embossing does not occur on a lacquer which still has to be subsequently cured, nor is a subsequently applied cover or protective lacquer required. It has shown during tests that with the exception of the lubricant layer, which is also present at least in residual amounts following embossing, the embossed surface can form the topmost layer of the foil material produced according to the invention.
Coating with a protective lacquer is no longer necessary. The method according to the invention thus achieves a noticeable economic improvement. As regards the foil material to be processed according to the invention, it is noted that this material can be material according to EP 0 676 503 Al, and the entire disclosure of this document concerning the material used according to the invention is herewith made the subject matter of the present application. Since the material mentioned therein already comprises a lubricant coating, it is obvious that a further lubricant coating is not absolutely necessary, but is, however, possible at any time.
A lubricant having a softening point which lies above the temperature occurring during embossing is preferably selected as the lubricant. Efficient production can hereby be ensured in an advantageous manner. In connection with the present invention, the usable lubricants preferably belong to the following chemical classes: paraffins, polyethylene waxes, polypropylene waxes modified with malefic anhydride, ester and acid waxes, amide waxes, polytetrafluoroethylene waxes, polytetrafluoroethylene/polyethylene waxes, ethyl vinyl acetate copolymer waxes, natural waxes, fatty alcohols, fatty acids, metal soaps, fatty acid esters, solid acid amides, siloxanes and sulphated oils. According to the invention, they can be used as individual compounds or in mutually compatible mixtures.
Most lubricants are commercially available and can be used directly without any further preparation.
If the lubricant is a paraffin, it is preferably selected from predominantly branched-chain liquid hydrocarbons or from predominantly straight-chain solid hydrocarbons.
Polyethylene waxes as lubricants are preferably selected from polyethylenes having an average molecular weight of 2000 to 12000 or from air-oxidised, low molecular weight polyethylenes.
A preferred natural wax is carnauba wax.
Typical representatives of fatty acids as lubricants are stearic acid, 12-hydroxystearic acid and montan acids (mixture of long-chain carboxylic acids having 26 to 33 carbon atoms).
Metal soaps are also suitable as lubricants. Calcium stearate, magnesium stearate and zinc stearate are preferably used.
Fatty acid esters as lubricants are preferably selected from fatty acid esters of short-chain, monohydric alcohols, fatty acid esters of long-chain, monohydric alcohols, glycol fatty acid esters, glycerol fatty acid esters, montan acid ester waxes, solid or liquid high molecular weight mixed esters or esters of polybasic carboxylic acids.
Typical representatives of this class of compound are n-butyl stearate, stearyl stearate, propylene glycol monooleate, glycerol monooleate, glycerol monostearate, distearyl adipate, distearyl phthalate, polycondensates of pentaerythrite + adipic acid + oleic acid or stearic acid, and esters of montan acids mixed with free montan acids and calcium montanate.
A solid acid amide as the lubricant is advantageously a fatty acid amide selected from oleic acid amide, erucic acid amide or stearic acid amide, or N,N'-bis-stearoyl-ethylenediamine.
The lubricant is normally applied in that it is applied as a dispersion and then dried. The solvent used hereby evaporates so that a comparatively solid lubricant coating remains.
As regards the embossing of a hologram within the scope of the method according to the invention, it is noted that in contrast to another embossing wherein the entire material is deformed, only a deformation of the surface hereby occurs. In other words, the unprocessed "rear side" remains largely even when a hologram is embossed. A
typical material thickness for the foil material used here is approximately 50 Vim. A
spacing of the embossing lines in the range of less than one micrometer, e.g. 0.5 Vim, is also typical for the embossing of a hologram. Finally, it is preferred within the scope of the invention for embossing to be carried out in a continuous method, for example by rotation, i.e. by means of rotating rollers.
Preferred developments of the method according to the invention are described in claims 2 to 4.
Particularly good experiences have been had within the scope of the method according to the invention with paper which is firstly metallised. The method according to the invention can furthermore be applied in an advantageous manner to metal, in particular aluminium, foils or strips. Finally, a foil material having an embossed hologram, which consists of a metal-paper composite, in particular an aluminium-paper composite, can also be produced within the scope of the method. Such a composite material is to be coated with lubricant on the foil side, i.e. the metal side, within the scope of the method according to the invention, and can also be processed according to the invention without the need for a lacquer coating and can be made into a foil material having an embossed hologram.
It has proven to be advantageous for the application of the lubricant to apply the lubricant in an amount in the order of magnitude of 0.02 g/mz. The required processability, in particular the possibility of embossing, can be hereby ensured in an economically favourable manner.
WO 03/027775 Al 5 PCT/EP02/09139 Since a subsequent application of a protective lacquer which possibly requires curing is not necessary according to the method of the invention, a cutting process is preferably carried out within the scope of the method according to the invention in a single operation together with embossing, which has further economic advantages. The material according to the invention can, in particular, be produced on a combined embossing and cutting machine, in particular a roll cutting machine. The material can then be wound with little effort to at least one roll.
The aforementioned object is furthermore solved by the foil material described in claim 5.
Said foil material comprises a metal layer provided with an embossed hologram as well as a lubricant layer which is applied to the finished foil material at least partially on said metal layer. The method according to the invention is reflected in the associated foil material in that the topmost layer of the material is exclusively formed by the metal layer and/or the lubricant layer. In other words, according to the invention, no protective lacquer is needed on the foil material. A material which can be produced in an extremely economical manner is thus created, which can, for example, be used as an inner foil for cigarette packets.
Preferred embodiments of the foil material according to the invention can be found in the subsequent claims. Essentially in accordance with the embodiments of the method according to the invention, it is preferred for the foil material to be a metallised paper, a metal foil, in particular an aluminium foil, or a metal-paper composite, in particular an aluminium-paper composite.
The required processability for producing the foil material according to the invention can be ensured in that the finished material has a lubricant coating in the order of magnitude of 0.02 g/m2.
It is finally preferred from the point of view of economics and transport for the foil material according to the invention to be a roll of material.
Claims (8)
1. Method for producing a foil material provided with an embossed hologram and having a metal layer, comprising the following steps:
- applying a lubricant to the metal layer, and - directly thereafter embossing the metal layer of the material, the embossed surface remaining the topmost layer of the material.
- applying a lubricant to the metal layer, and - directly thereafter embossing the metal layer of the material, the embossed surface remaining the topmost layer of the material.
2. Method according to claim 1, characterised in that the material is an aluminium foil, an aluminium-paper composite or paper which is firstly metallised.
3. Method according to claim 1 or 2, characterised in that the lubricant is applied in a order of magnitude of 0.02 g/m2.
4. Method according to one of claims 1 to 3, characterised in that a cutting process occurs in a single operation together with embossing, which is followed by winding onto at least one roll.
5. Foil material comprising - a metal layer provided with an embossed hologram, and - a lubricant layer which is at least partially applied to said metal layer, - the topmost layer of the material being formed exclusively by the metal layer and/or the lubricant layer.
6. Foil material according to claim 5, characterised in that the material is a metallised paper, an aluminium foil or an aluminium-paper composite.
7. Foil material according to claim 5 or 6, characterised in that the material has a lubricant layer in a order of magnitude of 0.02 g/m2.
8. Foil material according to one of claims 5 to 7, characterised in that said material is a roll of material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10146635.8 | 2001-09-21 | ||
| DE10146635A DE10146635B4 (en) | 2001-09-21 | 2001-09-21 | Process for producing a hologram embossed film material and film material |
| PCT/EP2002/009139 WO2003027775A1 (en) | 2001-09-21 | 2002-08-14 | Method for producing a foil material, provided with an embossed hologram, as well as a foil material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2460815A1 true CA2460815A1 (en) | 2003-04-03 |
Family
ID=7699844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002460815A Abandoned CA2460815A1 (en) | 2001-09-21 | 2002-08-14 | Method for producing a foil material provided with an embossed hologram, as well as a foil material |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20040231118A1 (en) |
| EP (1) | EP1430366A1 (en) |
| CA (1) | CA2460815A1 (en) |
| DE (1) | DE10146635B4 (en) |
| EA (1) | EA005833B1 (en) |
| WO (1) | WO2003027775A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008061998A1 (en) | 2008-12-12 | 2010-06-17 | Seismografics Jk Gmbh | Method for manufacturing embossing roller for planishing tool to form diffraction effect-images, involves corroding areas of sheet metal up to pre-determined corroding depth, so that sheet metal is optionally bent to form cylinder section |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3266416A (en) * | 1964-12-10 | 1966-08-16 | Grace W R & Co | Embossing method |
| US3490362A (en) * | 1967-07-20 | 1970-01-20 | Bernard J Massari | Die plate for embossing and cutting |
| US4725111A (en) * | 1986-07-29 | 1988-02-16 | American Bank Note Holographics, Inc. | Holograms embossed into metal surfaces |
| US4773718A (en) * | 1986-07-29 | 1988-09-27 | American Bank Note Holographics, Inc. | Holograms embossed into metal surfaces |
| US5155604A (en) * | 1987-10-26 | 1992-10-13 | Van Leer Metallized Products (Usa) Limited | Coated paper sheet embossed with a diffraction or holographic pattern |
| DE3744650A1 (en) * | 1987-12-30 | 1989-07-20 | Matthiesen Geb Sievers Gerda | Holographic impression method |
| DE8807814U1 (en) * | 1988-06-16 | 1988-11-10 | Lueg, Otto, Dr. | |
| ES2032724T1 (en) * | 1989-03-01 | 1993-03-01 | Austria Metall Aktiengesellschaft | PROCEDURE FOR THE MECHANICAL TREATMENT OF POLISHED SHEET SURFACES. |
| US4918800A (en) * | 1989-04-03 | 1990-04-24 | Eastman Kodak Company | Continuous method for making decorative sheet materials |
| US5081923A (en) * | 1990-03-29 | 1992-01-21 | Enamel Products & Plating Company | Method of creating a registered pattern on a metal coil and associated apparatus |
| CH681614A5 (en) * | 1991-07-03 | 1993-04-30 | Soremartec Sa | |
| US5672410A (en) * | 1992-05-11 | 1997-09-30 | Avery Dennison Corporation | Embossed metallic leafing pigments |
| US5464690A (en) * | 1994-04-04 | 1995-11-07 | Novavision, Inc. | Holographic document and method for forming |
| DE4412019C2 (en) * | 1994-04-07 | 1996-08-01 | Alcan Gmbh | Metallized paper cigarette wrapper and process for its manufacture |
| US5789066A (en) * | 1994-09-16 | 1998-08-04 | Sidmar N.V. | Method and device for manufacturing cold rolled metal sheets or strips and metal sheets or strips obtained |
| US6372073B1 (en) * | 1999-08-11 | 2002-04-16 | Southpac Trust International Inc. | Process for producing holographic material |
| US5922455A (en) * | 1996-06-04 | 1999-07-13 | Hampshire Holographic Manufacturing Corp. | Holographically enhanced wrapping elements |
| US5902436A (en) * | 1996-07-09 | 1999-05-11 | Hampshire Holographic Manufacturing Corp. | Method for transferring a metallized holographic image |
| DE19627638A1 (en) * | 1996-07-09 | 1998-01-15 | Giesecke & Devrient Gmbh | Stamping cylinder for the production of stamping foils |
| DE19722575A1 (en) * | 1997-05-29 | 1998-12-03 | Matthiesen Miriam | Process for embossing microstructures in metals or other hard materials |
| US6112388A (en) * | 1997-07-07 | 2000-09-05 | Toyota Jidosha Kabushiki Kaisha | Embossed metallic flakelets and method for producing the same |
| US6168100B1 (en) * | 1997-10-23 | 2001-01-02 | Toyota Jidosha Kabushiki Kaisha | Method for producing embossed metallic flakelets |
| US6093256A (en) * | 1997-11-14 | 2000-07-25 | Fort James Corp | Embossing roll cleaning method |
| US5881444A (en) * | 1997-12-12 | 1999-03-16 | Aluminum Company Of America | Techniques for transferring holograms into metal surfaces |
| EP0939037A1 (en) | 1998-02-26 | 1999-09-01 | Alusuisse Technology & Management AG | Packaging material |
| DE19809817A1 (en) * | 1998-03-09 | 1999-09-16 | Burkhard Mueller | Jewelry element with diffraction active-microstructure support |
| DE19813314A1 (en) * | 1998-03-26 | 1999-09-30 | Kurz Leonhard Fa | Stamping foil, especially hot stamping foil |
| JPH11300829A (en) * | 1998-04-22 | 1999-11-02 | Toyota Motor Corp | Production of metal film having embossed pattern |
| JP2000089677A (en) * | 1998-09-02 | 2000-03-31 | Hoei Yo | Hologram sticker for decoration and production therefor |
| EP1132786A2 (en) * | 2000-03-06 | 2001-09-12 | Illinois Tool Works Inc. | Holographic element and process for transferring a plurality of holographic images from a polymeric support to a paper or tissue support |
| US6638386B2 (en) * | 2000-04-19 | 2003-10-28 | Novavision, Inc. | Method for making holographic foil |
| US6497778B1 (en) * | 2000-04-19 | 2002-12-24 | Novavision, Inc. | Method for making holographic foil |
| DE10023888A1 (en) * | 2000-05-17 | 2001-11-22 | Armin Steuer | Hot stamping process for imprinting material layers using foil web involves temporarily accelerating foil web between imprinting intervals to produce larger interspaces than non-printed area of printed material |
| US6604457B2 (en) * | 2001-05-11 | 2003-08-12 | Graftech Inc. | Process and apparatus for embossing graphite articles |
| US7008364B2 (en) * | 2002-09-27 | 2006-03-07 | C.G. Bretting Manufacturing Company, Inc. | Sheet folding apparatus and method |
-
2001
- 2001-09-21 DE DE10146635A patent/DE10146635B4/en not_active Expired - Fee Related
-
2002
- 2002-08-14 CA CA002460815A patent/CA2460815A1/en not_active Abandoned
- 2002-08-14 EA EA200400450A patent/EA005833B1/en not_active IP Right Cessation
- 2002-08-14 WO PCT/EP2002/009139 patent/WO2003027775A1/en not_active Application Discontinuation
- 2002-08-14 US US10/489,480 patent/US20040231118A1/en not_active Abandoned
- 2002-08-14 EP EP02767392A patent/EP1430366A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EA200400450A1 (en) | 2004-08-26 |
| WO2003027775A1 (en) | 2003-04-03 |
| DE10146635A1 (en) | 2003-04-24 |
| EP1430366A1 (en) | 2004-06-23 |
| US20040231118A1 (en) | 2004-11-25 |
| EA005833B1 (en) | 2005-06-30 |
| DE10146635B4 (en) | 2005-06-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |