| 摘要 |
<p>PROBLEM TO BE SOLVED: To discriminate the release at a confidential postcard which makes it possible to visually recognize information by the release of a temporarily adhered surface. SOLUTION: One surface of a surface to be temporarily adhered is coated, with a releasable type sticky layer 2 which is not adhered in a normal state before adhering and after releasing and adhered by pressure, and the other surface is formed with an overprint layer. A sheet that inner information can be visually recognized when released is formed with a strong adhered part 6 that a base material and the layer 2 are adhered by stronger adhesive strength than that of the layer 2 to the overprint layer to be formed with a pattern such as reversed character on the part exposed with the base material without overprint layer on the surface to be temporarily adhered with the overprint layer formed. When it is released after it is temporarily adhered, the surface layer side of the base material of the part 6 exposed before the temporary adherence is broken to be transferred to the layer 2 side together with the layer 2, and hence it is discriminated that the reversed character having the broken surface is released.</p> |
