CN1533515B - 防伪的金属薄膜 - Google Patents

防伪的金属薄膜 Download PDF

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CN1533515B
CN1533515B CN038006391A CN03800639A CN1533515B CN 1533515 B CN1533515 B CN 1533515B CN 038006391 A CN038006391 A CN 038006391A CN 03800639 A CN03800639 A CN 03800639A CN 1533515 B CN1533515 B CN 1533515B
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metal foil
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恩格尔贝特·沙尔纳
赫尔穆特·克洛斯
阿道夫·谢德尔
威廉·朱瑟
兰伯特·内库拉
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Constantia Flexibles Group GmbH
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Abstract

本发明涉及一种防伪的金属薄膜(1)，该金属薄膜在其表面至少一个预定的部分区域(4)内具有构造，其中，所述部分区域与其余的表面区域(5)相比具有不同的光衍射、散射、折射或反射，其特征在于，所述有构造的部分区域具有一纵向的线形构造和一附加的横向的线形构造，使得在金属薄膜上产生所述有构造的部分区域作为识别标志。本发明的金属薄膜适于用作包装材料，其中用于药物。其中制造者或用户可以借助具有识别标志功能的预定的表面构造来检验他是否已获得非伪造的产品。如果所述构造产生在金属薄膜表面的大部分上，则其与印刷图象的外观图象相同，从而本发明的金属薄膜同样可以作为装饰薄膜或广告载体使用。

Description

防伪的金属薄膜
技术领域
本发明涉及一种防伪的金属薄膜。
背景技术
在例如用于药物的防伪的包装材料方面的需要量近年来逐渐上升，因为在假药方面的规模在全世界较严重地上升。这些伪造可能涉及药学上有效的药物，但也可能涉及安慰剂。
因此试图，如在钞票中已知的，对制药工业用的包装材料也设置全息图。在这方面已发现，虽然全息图的制造费用是较高的，但随着日增的技术发展其也可以伪造。这些伪造只能由这方面的专家来说明其特征或识别，因为对于药物使用者本身当没有有关的比较样品时是很难能确定该全息图是否是伪造的。
与此无关，在这方面试图制造防伪的包装材料，作为材料表面设有一特殊的涂膜，其具有通过辐射可活化的颜料。这样，例如制造商的公司标志或药物的商标可以通过辐射，如紫外线辐射或红外线辐射制成可见的或不可见的。EP-A2-1217091涉及具有结合的首次打开保证和/或原始保证的包装材料，这由一涂膜产生，其反射入射的光，以致按照观察方向或角度可以看到不同的颜色。
EP-A1-0967091描述一种由多个相互匹配的光栅象构成的涂膜，其根据观察角度产生不同的光学上的感觉。然而已发现这样的涂膜系统也可以事后补置，从而即使按这种方法也不能达到满意的防伪性。特别是对于制药工业用的包装材料的防伪性。
发明内容
本发明的目的是从现在起避免所谓的防伪的金属薄膜的上述缺点。
按照本发明该目的借助于一种防伪的金属薄膜来达到，该金属薄膜在其表面至少一个预定的部分区域内具有构造，其中，所述部分区域与其余的表面区域相比具有不同的光衍射、散射、折射或反射，其特征在于，所述有构造的部分区域具有一纵向的线形构造和一附加的横向的线形构造，使得在金属薄膜上产生所述有构造的部分区域作为识别标志。
按照本发明的优选实施方式，所述金属薄膜由铝构成。
按照本发明的优选实施方式，所述线形构造几何式地或随机地设置。
按照本发明的优选实施方式，所述金属薄膜在所述有构造的部分区域上具有透明的涂膜。所述透明的涂膜包括印刷油墨和/或塑料。
本发明涉及一种用于制造防伪的金属薄膜的方法，其中借助于激光技术产生有构造的部分区域。
本发明还涉及一种该防伪的金属薄膜的制造方法，其中按照本发明该金属薄膜在一轧制过程中制成并且其中至少一个使用的工作辊具有一个在至少一个预定的部分区域内有构造的表面，从而在轧制过程中该轧辊表面的构造被传到金属薄膜上。
该本发明的方法的进一步扩展公开于以下的描述中。
本发明还涉及本发明的防伪的金属薄膜为制造例如药物的包装材料、装饰薄膜和广告载体的应用。
附图说明
以下借助于图1至3更详细地说明本发明。附图中：
图1和2为本发明的防伪的金属薄膜1的局部剖面图；以及
图3示出一轧机6形式的装置6用以制造本发明的金属薄膜。
具体实施方式
以下更详细地说明实施本发明的一种可能的方法。
用于制造本发明的金属薄膜的原始产品，例如铝薄膜1’输送给一轧机6。轧机6包括各支承辊7和各工作辊8。金属薄膜1’形式的原始产品由一储料辊、即拆卷辊9经由转向辊11送入各工作辊8之间的轧辊间隙中。通过这些工作辊施加的压力减小插入的薄膜的厚度。这样，可以例如将一具有原始厚度40μm的铝薄膜1’在一道轧制过程中减到20μm。达到的薄膜厚度在测量站12处加以检验，其中然后将薄膜1输送给一卷绕辊，即另一存储辊10。该轧制过程可以根据要求的厚度重复多次。
为了从现在起达到按照本发明的表面构造，在最后的轧制过程将这对工作辊更换为另一对工作辊8，后者在其表面构造方面相应地具有一个或多个部分区域，如其在本发明的防伪的薄膜1中应该达到的。该构造(Strukturierungen)可以例如通过工作辊表面的研磨、抛光、腐蚀、激光或雕刻来产生，其中激光技术证明是特别优选的。借此构造成形可以在一宽的范围内改变，从而可以生产一方面观察者可见的和另一方面不可见的构造。
通过轧辊表面的可见的构造在金属薄膜上产生一同样可见的构造，反之不可见的构造能够产生一所谓隐蔽的防伪的构造成形。在轧制过程中所述构造在施加所要求的变形压力下传到金属薄膜上，后者因此在其表面的至少一个预定的部分区域内具有按照本发明的这样的构造。当然该构造可以在轧辊表面的大部分上延伸，从而不仅生产防伪的薄膜而同时可生产相应的装饰的薄膜。
该构造可以有规则地亦即设有几何排列，或按照随机原理，例如设置成皱纹(
Figure G038006391D00031
)。
按照应用也可以在金属薄膜的两侧表面上产生构造，为此两工作辊8必须相应地设计有构造。
当然也有可能与轧制过程无关地在防伪的金属薄膜1上制造有构造的表面区域。为此激光技术是适用的，借其按照辐射的程度不仅可以生产隐蔽的、即单独用眼睛不可见的表面构造，而且可生产单独用眼睛可见的表面构造。
以下借助于本发明的金属薄膜1的一个实施形式，如图1至2中举例示出的，更详细地说明本发明。
其中图1中示出一平面式识别标志2形成的表面构造、即公司标志。它与其余的薄膜表面3的区别在于其折射值并且有时对于观察者单独用眼睛已可识别。在该公司标志中涉及一面，其对作为包装材料的制造公司的观察者是认识的，因此它具有必须保持非伪造的产品的确实性。
按照表面构造也可实现射入的光的相应的衍射和散射。这例如可以借助于构成的反射图案来测量。这样的可测量性在表面构造不能单独用眼睛识别时是特别重要的。
图2中公开另一识别标志。由于本发明的金属薄膜优选通过一轧制过程制造，借其将特别是轧辊表面的沿运行方向纵向定向的构造5传到金属薄膜1的表面上，可以例如通过轧辊表面的研磨产生一沿横向于运行方向的构造而使得在金属薄膜1上产生一构造的部分区域4，其在光折射上引起变化。如果将部分区域4内的预定构造与一图案或与轧辊表面比较，则可以在一致时排除涉及一伪造的产品。
构成的图案从现在起可以有规则地，但也可以按照随机原理设置，借此一不规则设置的图案因此结合有高度的防伪性，因为按随机原理制成的构造只有制造商是认识的。这可以用于检验目的，如其在药物用的包装材料中是必需的，借助于在包装材料上的对照检查检验在包装材料表面上的构造与在轧辊表面的或金属薄膜1的相应图案的构造之间的同一性。
此外在制造本发明薄膜之后，表面构造也可以通过比较的光学上的测量来确定。这例如利用通用的光反射测量仪来实现。
本发明的金属薄膜可以按其表面构造设有透明的涂膜。作为透明的涂膜适用印刷油墨混合物和塑料涂覆，其在必要时可以具有颜料。作为塑料涂覆适用例如聚对苯二甲酸乙二酯(PET)、取向的聚酰胺(OPA)和由取向的聚丙烯(OPP)构成的涂覆。
这种透明的涂膜提供装饰的效果，从而本发明的金属薄膜也可以作为装饰薄膜或广告载体使用。
表面构造形式的识别标志也可以通过一掩盖的漆首先制成不可见的，以便其对于专家首先在进一步的应用时制成可见的。专家借助于比较检查检验是否涉及一非伪造的产品。
工业实用性
本发明的金属薄膜用来制造包装材料，其中特别适于用作药物的包装材料。在这种应用中制造者或用户根据薄膜表面中的预定的构造按简单的方式确认他已获得一非伪造的产品，从而根据本发明的金属薄膜具有防伪性。
如果所述构造产生在金属薄膜表面的大部分上，则其与印刷图象的外观图象相同，从而本发明的金属薄膜同样可以作为装饰薄膜或广告载体使用。

Claims (6)

1.一种防伪的金属薄膜(1)，该金属薄膜在其表面至少一个预定的部分区域(4)内具有构造，其中，所述部分区域与其余的表面区域(5)相比具有不同的光衍射、散射、折射或反射，其特征在于，所述有构造的部分区域具有一纵向的线形构造和一附加的横向的线形构造，使得在金属薄膜上产生所述有构造的部分区域作为识别标志。
2.按照权利要求1所述的金属薄膜，其特征在于，所述金属薄膜由铝构成。
3.按照权利要求1或2所述的金属薄膜，其特征在于，所述线形构造几何式地设置。
4.按照权利要求1或2所述的金属薄膜，其特征在于，所述线形构造随机地设置。
5.按照权利要求1或2所述的金属薄膜，其特征在于，所述金属薄膜在所述有构造的部分区域上具有透明的涂膜。
6.按照权利要求5所述的金属薄膜，其特征在于，所述透明的涂膜包括印刷油墨和/或塑料。
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