Data carrier with a liquid crystal security element

摘要: A data carrier such as an identity card or a paper of value protected against attempted forgery using color copiers and containing optically variable security element made liquid crystal material. The element. e.g. safeguarding thread, has plastics-like layer polymer which shows pronounced play colors at room temperature. properties polymers permit easy processing into semifinished product the finished product, so that completely different types elements can be produced.