CN105431288B - 安全元件,特别是安全标签 - Google Patents
安全元件,特别是安全标签 Download PDFInfo
- Publication number
- CN105431288B CN105431288B CN201480041285.1A CN201480041285A CN105431288B CN 105431288 B CN105431288 B CN 105431288B CN 201480041285 A CN201480041285 A CN 201480041285A CN 105431288 B CN105431288 B CN 105431288B
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- China
- Prior art keywords
- safety element
- sublayer
- layer
- element according
- metal
- 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.)
- Expired - Fee Related
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 17
- 239000004922 lacquer Substances 0.000 claims description 17
- 239000000049 pigment Substances 0.000 claims description 15
- 238000007639 printing Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 229910010272 inorganic material Inorganic materials 0.000 claims description 5
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- 239000010936 titanium Substances 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
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- NJVOHKFLBKQLIZ-UHFFFAOYSA-N (2-ethenylphenyl) prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1C=C NJVOHKFLBKQLIZ-UHFFFAOYSA-N 0.000 claims description 3
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- 125000004122 cyclic group Chemical group 0.000 claims description 2
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- 239000000853 adhesive Substances 0.000 description 5
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- -1 MOPP Substances 0.000 description 4
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
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- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
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- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
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- 230000004888 barrier function Effects 0.000 description 1
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- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
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- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
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Classifications
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- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
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- B32B23/08—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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Abstract
本发明涉及尤其用于安全标签的安全元件,所述安全元件具有载体基材(1),所述载体基材(1)在一个表面上具有由金属团簇层(2)、间隔层(3)和电磁波反射层(6)构成的色移效果结构,其特征在于,间隔层(3)由两个重叠设置的具有相同或不同组成的子层(4,5)构成,其中朝向团簇层(2)的第一子层(4)相比于第二子层(5)具有对团簇层更大的粘附性,并且朝向电磁波反射层(6)的第二子层(5)相比于第一子层(4)具有对电磁波反射层(6)更大的粘附性。
Description
技术领域
本发明涉及尤其作为安全标签的安全元件,所述安全元件具有至少一个色移效果,所述色移效果在操作尝试之后不可逆地变化或破坏。
背景技术
由EP 1 716 007 B1已知一种防伪安全元件,所述安全元件由至少一个电磁波反射层、聚合物间隔层和由金属团簇形成的层构成,其中一个或多个层除了其色移设置的功能之外还满足其它安全功能。
所述安全元件应用在载体基材上或者例如在防伪纸的造纸过程中至少部分地嵌入纸中。
由EP 1 972 674 A已知一种具有操作指示的安全标签或安全胶带,所述安全标签或安全胶带具有基于柔性塑料薄膜的柔性载体基材,其中在载体基材上以字母、记号、符号、线条、花纹、数字或标志的形式局部施加分离漆,然后施加整面的彩色或透明的涂层或进行金属化,并且在所述整面的层上施加整面的透明或彩色的分离层,并且在该分离层上施加自粘合涂层。
发明内容
本发明的目的在于提供安全元件,特别是安全标签,其在完好状态下具有至少一个色移效果,但是所述色移效果在操作尝试时不可逆地变化或破坏。
本发明的主题因此是尤其用于安全标签的安全元件,所述安全元件具有载体基材(1),所述载体基材(1)在一个表面上具有由金属团簇层(2)、间隔层(3)和电磁波反射层(6)构成的色移效果结构,其特征在于,所述间隔层(3)由两个重叠设置的具有相同或不同组成的子层(4,5)构成,其中朝向团簇层(2)的第一子层(4)相比于第二子层(5)具有对团簇层更大的粘附性,并且朝向电磁波反射层(6)的第二子层(5)相比于第一子层(4)具有对电磁波反射层(6)更大的粘附性。
作为载体基材,可以考虑例如载体薄膜,优选例如由PI、PP、MOPP、PE、PPS、PEEK、PEK、PEI、PSU、PAEK、LCP、PEN、PBT、PET、PA、PC、COC、POM、ABS、PVC、含氟聚合物(例如聚四氟乙烯)等构成的柔性塑料薄膜。载体薄膜有利地具有5-700μm,优选5-200μm,特别优选12-100μm的厚度。
在载体基材的一个表面上施加产生色移效果的层序列。根据彩色印象的观察角度,例如从洋红色改变成绿色或从绿色改变成蓝色。
在此,目前可以任选地在载体基材上施加局部的分离漆涂层。作为分离漆涂层,尤其可以考虑已知的粘附性差的漆组合物,例如基于在合适溶剂中的环烯烃共聚物、硝基纤维素、丙烯酸酯、聚氯乙烯、乙烯丙烯酸酯共聚物或苯乙烯丙烯酸酯的那些。为了调节粘附性,在此优选添加氯化聚烯烃。相比于基础聚合物,氯化聚烯烃在组合物中的份额可以为20至130重量%。
此外还可以使用以约20-300nm的厚度涂布的极薄的聚酰胺层、聚乙烯层、含氟聚合物蜡层或有机硅涂层。
在载体基材的第一表面上或者在局部的分离漆涂层上施加金属团簇层。所述金属团簇层可以整面地施加或者局部施加。金属团簇可以例如由铝、金、钯、铂、铬、银、铜、镍、钽、钛、锡、锌、钼等或其合金,例如Au/Pd、Cu/Ni或Cr/Ni构成。
优选还可以施加从外部(例如通过X射线辐射或电离辐射或电磁相互作用)可触发的等离子体振子激发的团簇材料,例如第III至第VI主族或第II副族的半导体元素。由此在用合适的读取装置观察时可见到色谱的变化(例如强度变化)或色移效果的闪烁。
团簇层还可以具有另外的性质,例如导电性质、磁力性质或荧光性质。例如Ni、Cr/Ni、Fe的团簇层或具有这些材料或这些材料与上述团簇材料的混合物的壳-核结构具有这样的另外的特征。尤其是,还能够通过壳-核结构制备荧光性团簇,例如通过使用QuantumDot Corp公司的Quantum Dots●。
在真空工艺中制备团簇层时,可以有利地通过调节位于其下的层的表面能或粗糙度从而影响团簇的生长及其形状以及任选的性质。这以特有方式改变光谱。这可以例如通过涂布过程中的热处理或者通过基材的预热而进行。
还可以例如通过用氧化性液体(例如用次氯酸钠)或者在PVD或CVD工艺中处理表面从而有目的地改变这些参数。
可以优选地借助溅射施加团簇层。
在此主要通过功率密度、所使用的气体量及其组成、基材的温度和轨道速度调节层的性质,尤其是密度和结构。
为了借助印刷方法施加,在任选必要的团簇的浓缩之后在溶液中混合少量的惰性聚合物,例如PVA、聚甲基丙烯酸甲酯、硝基纤维素体系、聚酯体系或氨基甲酸酯体系。然后可以借助印刷方法(例如丝网印刷法、柔版印刷法或优选凹版印刷法),借助涂布方法(例如涂漆、喷涂、辊涂技术)等施加所述混合物。这样的金属团簇被称为胶态金属团簇,因为其在施加之前存在于溶剂中或漆料体系中的胶质溶液中。
团簇层的厚度优选为2-20nm,特别优选3-10nm。
然后在团簇层上施加基本上透明的间隔层。
根据本发明,该间隔层由两个重叠设置的子层构成。所述子层可以由无机材料或由有机聚合物构成,所述无机材料为例如金属氧化物、金属硫化物、金属氟化物或金属氮化物,例如氧化硅、硫化锌、氧化铜、氧化钛、氧化锆、氟化镁等,所述有机聚合物为例如环烯烃共聚物,例如Ticona公司的6013、6015、6017、5013,硝基纤维素,例如Wolff Walsrode公司的E400,丙烯酸酯,甲基丙烯酸酯,聚氯乙烯聚合物,例如Wacker Chemie AG公司的Vinnol E15/45M、H 30/48M或E 22/48A,乙烯丙烯酸酯共聚物或苯乙烯丙烯酸酯,例如BASF AG的Acronal系列280D、12DE、1051、7104,环氧化物或聚氨酯。
无机子层优选以已知的PVD法或CVD法施加。
聚合物子层通常借助印刷法、辊涂法、喷嘴法、喷射法、浸渍法或涂漆法或所述方法的组合施加。
间隔层的朝向团簇层的第一子层在此以良好粘附在团簇层上的层的形式实施。在此任选可以通过电晕处理、火焰处理或等离子体处理改进间隔层的第一子层对团簇层的粘附性。
第一子层可以例如以阳型或阴型的字母、数字、符号、记号、线条、花纹等的形式整面地实施或者局部实施。
在间隔层的所述第一子层上施加间隔层的第二子层。
相比于第一子层,第二子层具有与之后的电磁波反射层更好的粘附性。
第二子层可以例如以阳型或阴型的字母、数字、符号、记号、线条、花纹等的形式整面地实施或者局部实施。
如果两个子层具有相同或相似的组成,则可以通过对第一子层的朝向第二子层的表面进行合适的表面功能化从而影响两个子层之间的粘附性。用于表面功能化的合适手段为例如电晕处理、火焰处理、等离子体处理、印刷预处理、化学预处理、酸处理、UV照射、臭氧化等。还可以添加氯化聚烯烃来调节第二聚合物子层的粘附性。相比于基础聚合物,所述氯化聚烯烃在组合物中的份额可以为20至130重量%。
根据组成,两个子层可以具有相同或不同的折射率。
由两个子层构成的间隔层的厚度在此可以在宽的范围内,例如在约10nm至4μm的范围内有目的地变化。在此,间隔层的两个子层可以具有相同或不同的厚度,并且各自的厚度为约10nm至2μm。
两个子层可以是无色透明的。所述子层的至少一个也可以具有颜色,其中两个子层的色调则优选不同。
为了形成有机层的色调,在相应的聚合物中添加着色剂或颜料,其中所有的市售着色剂或颜料都是合适的,例如使用无机基颜料如二氧化钛、硫化锌、高岭土、ATO、FTO、铝、氧化铬和氧化硅,或有机基颜料如酞菁蓝、异吲哚啉酮黄(i-Indolidingelb)、二噁嗪紫等以及彩色颜料和/或包囊颜料。作为着色剂可以例如考虑1,1-或1,2-铬-钴-配合物。在此不允许通过所使用的颜料或着色剂显著影响层的透明度,从而不抑制间隔层中的干扰效果。间隔层的颜色与色移效果叠加并且在不同的观察角度下造成变化的彩色印象。
无机材料的子层或者是无色透明的,或者具有本色。
然后在第二子层上施加电磁波反射层、镜面层或反射层。所述层可以优选由金属例如铝、金、铬、银、铜、钛、锡、铂、镍、钼或钽,半导体例如硅,及其合金例如镍/铬、铜/铝等或具有金属颜料的印刷油墨以及金属氧化物、金属硫化物、金属氮化物或金属氟化物构成。
电磁波反射层通过已知方法(例如喷射、蒸镀、溅射、PVD法或CVD法),或例如以印刷油墨的方式通过已知的印刷方法(凹版印刷、柔版印刷、丝网印刷、数字印刷),通过涂漆、辊涂法、狭窄喷嘴涂布法、浸涂法(辊浸涂布)或帘膜涂布法(帘膜式涂布)等整面地施加或者局部施加。
电磁波反射层和团簇层均可以局部施加。当借助PVD法或CVD法施加时,借助已知的腐蚀法或洗涤法进行结构化。这种方法例如公开于EP 1 291 463 A中。
然后可以在电磁波反射层上施加覆盖层,所述覆盖层任选地也可以具有功能性标志。
所述覆盖层任选地充当用于之后施加的粘合涂层,尤其是自粘合涂层或热密封涂层或冷密封涂层的屏障层。覆盖层同时充当用于电磁波反射层的保护层。
任选地可以在载体基材的第二表面上施加印刷底漆,从而促进或实现之后对表面进行的印刷。
在另一个实施方案中,色移效果的层结构还可以前后倒置地进行,其中在载体基材的第一表面上首先施加电磁波反射层,然后施加由2个子层构成的间隔层,然后在间隔层上施加团簇层。
此外,根据本发明的安全元件可以具有其它视觉可见的和/或机器可读的安全标志。
这些层例如可以具有一定的磁力性质、化学性质、物理性质以及光学性质。
为了调节磁力性质,可以使用顺磁性、反磁性和铁磁性物质,例如铁、镍和钴或其化合物或盐(例如氧化物或硫化物)。
通过可见的着色剂或颜料,发光着色剂或颜料,在可见光范围、紫外线范围或红外线范围内发荧光或发磷光的效果颜料,如液晶、珠光、青铜和/或多层色移颜料和热敏性染料或颜料,能够影响层的光学性质。所述物质可以单独使用或以任何可能的组合使用。
此外,根据本发明的安全元件可以具有光学活性标志,如衍射光栅、衍射结构、全息图、显像图等。
为了调节电性质(例如导电性),可以例如添加石墨、炭黑、有机或无机导电聚合物、金属颜料(例如铜、铝、银、金、铁、铬等),金属合金(如铜-锌或铜-铝)以及无定形或结晶陶瓷颜料(如ITO等)。
根据本发明的安全元件可以具有自粘合涂层、热密封涂层或冷密封涂层,安全元件可以通过这些涂层固定在待保护的物品上。
附图说明
图1至5中显示了根据本发明的安全元件的根据本发明的实施方案。
其中
1表示载体基材
2表示金属团簇层
3表示间隔层
4表示间隔层的第一子层
5表示间隔层的第二子层
6表示电磁波反射层
7表示覆盖层
8表示自粘合层
9表示易印刷底漆层
10表示局部分离漆层
11表示助粘剂层
具体实施方式
图1中显示的安全元件具有例如由PET构成的载体基材1。在所述载体基材1的一个表面上施加易印刷底漆9,另一个表面上施加由金属团簇构成的层2,其中团簇层在该情况下由Cr构成。
在该金属团簇层上施加由两个子层4和5构成的间隔层3。整面的第一子层4具有对团簇层的良好粘附性并且由Wacker公司的聚氯乙烯聚合物Vinnol 14/45H构成,第二子层5同样整面地实施,并且在该情况下由Wolff Walsrode公司的硝基纤维素E 400构成。两个子层是无色透明的。
在第二子层上是电磁波反射层6,在该情况下是Al金属层。第二子层对Al金属层之间的粘附性高于第二子层对第一子层的粘附性。在本实施例中,借助等离子体预处理额外地提高Al层在第二子层上的粘附性。
该电磁波反射层设置有覆盖层7(特别是漆层),然后设置有自粘合涂层8,所述结构可以借助于自粘合涂层8固定在待保护的物品上。
所述结构显示从洋红色到绿色的色移效果。
如果在粘合之后操作(即尝试从待保护的物品上撕除)标签,则所述结构在间隔层的两个子层之间分离。
由此由于间隔层中的干扰效果的破坏而完全失去色移效果。所述结构的残留在待保护物品上的部分呈现金属光泽,而被撕除的部分呈现灰色透明。
如果例如通过挤压或者借助粘合涂层尝试再次组装所述结构,则色移效果不可重现,因为不能恢复间隔层的原始厚度。或者在两个子层之间存在空气间隙,或者当在两个子层之间使用粘合层时间隔层的厚度以一定程度变化,使得不能原样重现色移效果。
图2中显示了本发明的另一个实施方案。
在此,根据本发明的安全元件由载体基材1构成,所述载体基材1的一个表面上设置有底漆9且另一个表面上具有字母、数字、符号、记号、线条、花纹等的形式的局部分离漆层10。分离涂层由有机硅涂层形成。
然后可以施加任选的助粘剂层11用于增强之后施加的金属团簇层2的粘附性。该助粘剂层并非强制需要的,但是在高的光学要求下是有利的,因为在需要时通过助粘剂层可以弄平分离漆涂层的不平坦性。然后,图2中显示的安全元件具有由第一子层4和第二子层5构成的间隔层3,所述第一子层4良好粘附在团簇层上并且由氧化硅构成,所述第二子层5由硫化锌构成并且对第一子层的粘附性较差,但是具有对之后的电磁波反射层的良好粘附性。在该实施例中,两个子层以透明的方式实施。
在间隔层上施加电磁波反射金属层6,所述电磁波反射金属层6又设置有覆盖漆层7和自粘合涂层8。
在此这样调节所述层的粘附关系,使得相比于间隔层3的两个子层4,5彼此的粘附性,分离涂层10较差地粘附在载体基材1上。
如果在粘合之后操作(即尝试从待保护的物品上撕除)标签,则在存在分离漆涂层10的区域中,分离漆涂层10与载体基材1或与团簇层2分离,在不存在分离漆涂层10的区域中,两个子层4和5彼此分离。在后一个区域中失去色移效果,在存在分离漆涂层10的区域中,保持色移效果,因为未造成间隔层3的子层4,5的分离,因此间隔层3的厚度不改变。
图3中显示了一种结构,其中在操作尝试时完全失去或破坏第一色移效果然而保持第二色移效果。
安全元件具有载体基材1,例如厚度为50μm的PET塑料薄膜。
在所述载体基材1的一个表面上施加易印刷底漆9,在另一个表面上施加由金属团簇构成的层2,其中团簇层在该情况下由Ti构成。
在该金属团簇层上施加由两个子层4和5构成的间隔层3。整面的第一子层4具有对团簇层的良好粘附性,第二子层5以记号、字母、数字、符号、图案、线条或花纹的形式局部施加并且具有对第一子层4的差的粘附性和对电磁波反射层6的出色的粘附性,所述电磁波反射层6位于第二子层5上并且在该情况下由Ni构成。
该电磁波反射层6设置有覆盖层7然后设置有自粘合涂层8,所述结构可以通过自粘合涂层8固定在待保护的物品上。
所述结构在存在两个子层4和5的区域中具有从洋红色至绿色的色移效果,并且在仅存在整面的第一子层4的区域中具有从绿色至蓝色的另一个色移效果。
如果在粘合之后操作(即尝试从待保护的物品上撕除)标签,则在存在两个子层的区域4和5中,所述结构在间隔层的两个子层之间分离。在仅存在子层4的其它区域中,粘合涂层8从待保护的物品上脱落。
因此,由于间隔层(所述间隔层在完整的安全元件中由两个子层4和5构成)中的干扰的破坏而失去第一色移效果。然而第二色移效果保持不变。如果例如通过挤压或者借助粘合涂层尝试再次组装所述结构,则第一色移效果不可重现,因为不能恢复间隔层的原始厚度。或者在两个子层之间存在空气间隙,或者当在两个子层之间使用粘合层时间隔层的厚度以一定程度变化,使得不能原样重现第一色移效果,并且或者产生变化的色移效果,或者失去色移效果。
图4中显示了与图3中所示的安全元件类似的本发明的实施方案。然而在此处显示的实施方案中,间隔层的第一子层4局部实施且间隔层的第二子层整面地实施。
与图3中所示的实施方案类似,在操作尝试时色移效果被破坏。
除了图3中显示的实施方案之外,图5中显示的根据本发明的安全元件的实施方案在载体基材上还具有字母、数字、记号、图案、符号、线条或花纹形式的局部的分离漆层10。分离漆层在此由有机硅涂层构成。
因此这样调节所述层的粘附关系,使得相比于间隔层3的两个子层4,5彼此的粘附性,分离涂层10较差地粘附在载体基材1上。
所述结构在存在两个子层4和5的区域中具有从洋红色至绿色的第一色移效果,并且在仅存在整面的第一子层4的区域中具有从绿色至蓝色的第二色移效果。
如果在粘合之后操作(即尝试从待保护的物品上撕除)标签,则在存在分离漆涂层10的区域中,分离漆涂层10与载体基材1或与团簇层2分离,在不存在分离漆涂层10的区域中,两个子层4和5彼此分离。在存在分离漆涂层10的区域中,保持第一色移效果,因为此处未造成子层4和5的分离并且间隔层3的厚度因此保持不变。第二色移效果同样保持不变。
在不存在分离层10的区域中,在子层4和5分离时失去第一色移效果,保持第二色移效果,因为在该处粘合涂层8与待保护的物品脱离。
取决于局部的分离漆涂层10和局部的子层5彼此的相对位置,在分离漆涂层10和间隔层3的局部的子层5的位置重叠时,在重叠区域中存在第一色移效果,在待保护的物品上进行操作之后,相反在分离层10不与间隔层3的局部的子层5重叠的区域中,失去第一色移效果,因为间隔层3被破坏。在任何情况下都存在第二色移效果,其中在存在分离漆涂层10的区域中,在待保护的物品上可见到色移效果,在不存在分离漆涂层10的区域中,包括粘合涂层8的整个层结构残留在被撕除部分上。
根据本发明的安全元件可以用作安全标签从而保护贵重物品、数据载体、物品或包装,例如用于制药、电子和/或食品工业中。
Claims (16)
1.用于安全标签的安全元件,所述安全元件具有载体基材(1),所述载体基材(1)在一个表面上具有由金属团簇层(2)、间隔层(3)和电磁波反射层(6)构成的色移效果结构,其特征在于,间隔层(3)由两个重叠设置的具有相同或不同组成的子层(4,5)构成,其中朝向团簇层(2)的第一子层(4)相比于第二子层(5)具有对团簇层更大的粘附性,并且朝向电磁波反射层(6)的第二子层(5)相比于第一子层(4)具有对电磁波反射层(6)更大的粘附性。
2.根据权利要求1所述的安全元件,其特征在于,在载体基材(1)上在色移效果结构的下方施加局部的分离漆涂层(10)。
3.根据权利要求1或2任一项所述的安全元件,其特征在于,两个子层(4,5)各自彼此独立地由无机材料或由聚合物材料构成,所述无机材料为金属氧化物、金属硫化物、金属氟化物或金属氮化物,所述聚合物材料为环烯烃共聚物、硝基纤维素、丙烯酸酯、甲基丙烯酸酯、聚氯乙烯、乙烯丙烯酸酯共聚物、苯乙烯丙烯酸酯、环氧化物或聚氨酯。
4.根据权利要求1或2任一项所述的安全元件,其特征在于,两个子层(4,5)具有相同或不同的折射率。
5.根据权利要求1或2任一项所述的安全元件,其特征在于,两个子层(4,5)各自具有在10nm和2μm之间的层厚度,其中两个子层可以具有相同或不同的厚度。
6.根据权利要求1或2任一项所述的安全元件,其特征在于,两个子层(4,5)是透明的。
7.根据权利要求1或2任一项所述的安全元件,其特征在于,两个子层(4,5)的至少一个具有颜色或本色。
8.根据权利要求1或2任一项所述的安全元件,其特征在于,两个子层(4,5)整面地实施或者至少一个子层(4,5)作为局部层以阳型或阴型的字母、数字、符号、记号、线条、花纹的形式实施。
9.根据权利要求8所述的安全元件,其特征在于,以阳型或阴型的字母、数字、符号、记号、线条或花纹的形式实施的子层(4,5)在操作之前引起不同的色移效果。
10.根据权利要求8所述的安全元件,其特征在于,以阳型或阴型的字母、数字、符号、记号、线条或花纹的形式实施的子层(4,5)在操作之后引起褪色。
11.根据权利要求1或2任一项所述的安全元件,其特征在于,团簇层(2)由铝、金、钯、铂、铬、银、铜、镍、钽、钛、锡、锌、钼或其合金Au/Pd、Cu/Ni或Cr/Ni的金属团簇或由胶态金属团簇构成。
12.根据权利要求1或2任一项所述的安全元件,其特征在于,电磁波反射层(6)由金属铝、金、铬、银、铜、钛、锡、铂、镍、钼或钽,半导体硅,及其合金镍/铬、铜/铝或具有金属颜料的印刷油墨以及金属氧化物、金属硫化物、金属氮化物或金属氟化物构成。
13.根据权利要求1或2任一项所述的安全元件,其特征在于,所述安全元件包括其它视觉可见和/或机器可读的安全标志。
14.根据权利要求1或2任一项所述的安全元件,其特征在于,在载体基材(1)的与色移效果相对的表面上施加接受印刷的易印刷底漆(9)。
15.根据权利要求1或2任一项所述的安全元件,其特征在于,所述安全元件具有自粘合涂层、热密封涂层或冷密封涂层。
16.根据权利要求1至15中任一项所述的安全元件作为安全标签或在安全标签上的用途。
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WO2015174089A1 (ja) * | 2014-05-13 | 2015-11-19 | 凸版印刷株式会社 | 回折構造転写箔とそれを用いた偽造防止媒体 |
JP6641738B2 (ja) * | 2015-02-04 | 2020-02-05 | 凸版印刷株式会社 | 表示体、および、表示体の観察方法 |
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2013
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- 2013-09-20 SI SI201330139T patent/SI2851194T1/sl unknown
- 2013-09-20 PL PL13004600T patent/PL2851194T3/pl unknown
- 2013-09-20 ES ES13004600.6T patent/ES2558461T3/es active Active
-
2014
- 2014-06-13 KR KR1020167009744A patent/KR20160058850A/ko not_active Application Discontinuation
- 2014-06-13 CN CN201480041285.1A patent/CN105431288B/zh not_active Expired - Fee Related
- 2014-06-13 RU RU2016103109A patent/RU2016103109A/ru unknown
- 2014-06-13 WO PCT/EP2014/001612 patent/WO2015039711A1/de active Application Filing
- 2014-06-13 MX MX2016003657A patent/MX2016003657A/es unknown
- 2014-06-13 CA CA2919548A patent/CA2919548A1/en not_active Abandoned
- 2014-06-13 JP JP2016515480A patent/JP6431902B2/ja not_active Expired - Fee Related
- 2014-06-13 US US14/900,323 patent/US20160200133A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
WO2015039711A1 (de) | 2015-03-26 |
EP2851194B1 (de) | 2015-12-16 |
CN105431288A (zh) | 2016-03-23 |
JP6431902B2 (ja) | 2018-11-28 |
US20160200133A1 (en) | 2016-07-14 |
CA2919548A1 (en) | 2015-03-26 |
PL2851194T3 (pl) | 2016-06-30 |
ES2558461T3 (es) | 2016-02-04 |
KR20160058850A (ko) | 2016-05-25 |
EP2851194A1 (de) | 2015-03-25 |
MX2016003657A (es) | 2016-06-24 |
RU2016103109A (ru) | 2017-10-25 |
JP2017504046A (ja) | 2017-02-02 |
SI2851194T1 (sl) | 2016-03-31 |
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