Tamper-evident closure

摘要: A security bag includes a tamper-evident closure which provides visual indication if the is opened. The an ink layer deposited on one wall of or flexible strip secured to bag, and adhesive in overlying relationship with for sealing closed. release material predetermined pattern, solid applied over so that pattern not visible closure. void spaces arranged pattern. Preferably, out registry overlap varying degrees If forced open, will delaminate from surface it printed, revealing material. Because by degrees, difficult use quick-drying marker other coloring technique fill created as conceal unauthorized opening bag.