FIELD: printing industry.SUBSTANCE: proposed invention is designed for protection against counterfeit of packages and other items. Cryptography on the colourless transparent polymer film with the possibility of multiple positive-negative reading of information by means of application of information symbols onto the film with the help of local thermal impact and observation at different angle or in a clear space. Application of information is carried out through usage as a polymer film of unixially oriented rigid elastic polyolefin film, local thermal impact under pressure with subsequent deformation of elastic stretching along the axis of orientation.EFFECT: proposed invention simplifies production of invisible images on a carrier with provision of high extent of counterfeit protection.3 cl, 3 dwg, 4 tbl, 6 ex
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机译：技术领域：印刷工业。物质：提出的发明被设计用于防止包装和其他物品的伪造。在无色透明聚合物薄膜上进行密码术，可以通过在薄膜上施加信息符号并借助局部热冲击和在不同角度或在空白空间中进行观察来多次正负读取信息。信息的应用是通过用作单向取向的刚性弹性聚烯烃薄膜的聚合物薄膜，在压力下产生局部热冲击以及随后沿取向轴的弹性拉伸变形而实现的。效果：提出的发明简化了在载体上产生不可见图像的过程。提供高度的假冒保护。3 cl，3 dwg，4 tbl，6 ex
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