| 摘要 |
PURPOSE:To make it impossible to duplicate a document through transmission or reflection of light or other means, by a method wherein a transparent colored adhesive film in which an adhesive colored with a dye or the like is applied to one side of a transparent film is adhered to the face side of a document, and a backing adhesive material having a hiding capability is adhered to the back side of the document. CONSTITUTION:The transparent colored adhesive film 2 in which an adhesive colored with a dye or a pigment is applied to one side of the transparent film (e.g., polyester film) 1 is adhered to the face side of the document 5. The backing adhesive material having a hinding capability in either one or both of a backing surface material 3 and a backing adhesive layer 4 combined with each other is adhered to the back side of the document 5. Accordingly, duplication of the document is prevented by the use of the adhesive sheet which makes it impossible to duplicate the document through transmission or reflection of light or other means. |
