| 摘要 |
<p>PROBLEM TO BE SOLVED: To see through a printing part from respective front and back sides through a first surface layer material and a second surface layer material and to impart an additional value in terms of design by executing appropriate printing to the intermediate layer material of a three-layer structure. SOLUTION: By interposing the intermediate layer material 3 to which the appropriate printing 4 is executed between the first surface layer material 1 and the second surface layer material 2 composed of nonwoven fabric respectively thin enough to be seen through and attaining the three-layer structure, the printing part is made visible from the outside and the printing part is not exposed to a sheet surface.</p> |
