Design and multilevel structuring of shape memory polymers for pleochroism control,Journal of Applied Polymer Science

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Design and multilevel structuring of shape memory polymers for pleochroism control
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-08-10 , DOI: 10.1002/app.54532
Alexander P. Kondratov ₁ , Alexander A. Nikolaev ₁ , Victor G. Nazarov ₁ , Vladislav Y. Vereshchagin ₁ , Alex A. Volinsky ₂

Affiliation

Brands and products counterfeiting, and falsification are global problems for the development and distribution of high-tech industrial and food products, which affect world economies. One way to solve these problems is to develop original packaging with protection elements and labeling against counterfeiting, which excludes the possibility of replication and forgery by printing or other methods. The most reliable way to protect packaging from counterfeiting is the use of new materials with unique optical properties and constantly updated technologies for packaging manufacturing and labeling. This paper proposes a new multi-level technology for the design, manufacture and hidden labeling of polymer packaging made from several layers of transparent polymer films. The design and marking of the multilayer films are combined with perforation, thermal treatment and heat sealing of the package. The reliability of the proposed markings is based on the characterization of optical pleochroism effects in transparent multilayer polymer materials with shape memory. The thermomechanical and optical properties of films made of bulk thermoplastics (polypropylene, polystyrene, polyvinyl chloride and polyethylene) were characterized in polarized light. The modification and combination of these films provide a high color difference and sufficient contrast of hidden markings, allowing to identify genuine products by bar codes formed from shape memory films in sealing seams of flexible polymer packaging.

中文翻译：

用于多色性控制的形状记忆聚合物的设计和多层次结构

品牌和产品假冒和伪造是高科技工业和食品开发和分销的全球性问题，影响着世界经济。解决这些问题的一种方法是开发带有保护元件和防伪标签的原包装，从而排除通过印刷或其他方法复制和伪造的可能性。保护包装免遭假冒的最可靠方法是使用具有独特光学特性的新材料以及不断更新的包装制造和标签技术。本文提出了一种新的多层次技术，用于由多层透明聚合物薄膜制成的聚合物包装的设计、制造和隐藏标签。多层薄膜的设计和标记与穿孔相结合，封装的热处理和热封。所提出的标记的可靠性基于具有形状记忆的透明多层聚合物材料中光学多色性效应的表征。在偏振光下表征由本体热塑性塑料（聚丙烯、聚苯乙烯、聚氯乙烯和聚乙烯）制成的薄膜的热机械和光学性能。这些薄膜的改性和组合提供了高色差和足够的隐藏标记对比度，允许通过柔性聚合物包装密封接缝中的形状记忆薄膜形成的条形码来识别正品。所提出的标记的可靠性基于具有形状记忆的透明多层聚合物材料中光学多色性效应的表征。在偏振光下表征由本体热塑性塑料（聚丙烯、聚苯乙烯、聚氯乙烯和聚乙烯）制成的薄膜的热机械和光学性能。这些薄膜的改性和组合提供了高色差和足够的隐藏标记对比度，允许通过柔性聚合物包装密封接缝中的形状记忆薄膜形成的条形码来识别正品。所提出的标记的可靠性基于具有形状记忆的透明多层聚合物材料中光学多色性效应的表征。在偏振光下表征由本体热塑性塑料（聚丙烯、聚苯乙烯、聚氯乙烯和聚乙烯）制成的薄膜的热机械和光学性能。这些薄膜的改性和组合提供了高色差和足够的隐藏标记对比度，允许通过柔性聚合物包装密封接缝中的形状记忆薄膜形成的条形码来识别正品。

更新日期：2023-08-10

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