国外防伪安全胶带技术发展现状

Current Development of Foreign Adhesive Security Tape

篡改留迹是防伪安全胶带最基本的防伪技术,为了防止篡改者借助工具或者采用高温、低温、溶剂等手段来处理胶带,在多层结构的防伪胶带中引入易撕裂层、高温变色油墨、可被溶剂溶解的涂层、热变形油墨、低温显色油墨、低温弱化涂层、外力变形涂层、高温变形、防止二次粘结等功能层来提高胶带防伪性能。指出了将多种防伪技术集中使用在一种胶带上是安全防伪胶带的发展趋势。

The printed pattern in AST becomes obvious if any attempt is made to peel the adhesive security tape（AST）.In order to indicate any tampering by mechanical tools,commercially available solvents,freezing and heating,etc.,the AST is provided with all kinds of function layers,such as weakened base layer,heat sensitive tamper-indicating ink,pigmented layer which provides strongly contrasting visible areas when damaged,coatings that are made of certain ink with a high concentration of wax,metal,thermochromic material,solvent or water sensitive material,perforations or lines of weakness or material which has low adhesion at low temperatures,a separation liquid layer that prohibits two parts during said peeling from re-binding.Combination of many security technology used in an AST is the development trend.