PROTECTION SEAL WHICH DISPLAYS MANIPULATIONS Russian patent published in 1999 - IPC

FIELD: packing equipment. SUBSTANCE: device is designed as temperature-contractible material, which has temperature- contractible film and protection seal, which has substrate including surface relief structure, which provides optical effect. Each substrate surface carries adhesive layer. Protection seal is attached to film by means of one adhesive layer. Strength of each adhesive layer provides impossibility of its removal after connection of substrate to surface without destruction of optical effect. EFFECT: possibility of visual detection of integrity of original packing. 18 cl, 4 dwg