| 摘要 |
PURPOSE:To obtain a stratified structure which usually has such a weak tack that it can be released and re-sticked and which can also reveal a strong tack, by providing a supporting base material with two kinds of self-adhesives different in tack, i.e. strong and weak ones, in a state in which the weak self-adhesive projects from the strong self-adhesive on the side of a self-adhesive surface. CONSTITUTION:This stratified structure consists of a supporting base material and two kinds of self-adhesives different in tack, i.e. strong and weak one, which are provided at least on one side of the supporting base material in a state in which the weak self-adhesive projects from the strong self-adhesive on the side of a self-adhesive surface. This structure can give a variable tack for an adhered depending upon the pressure to be applied. Self-adhesives of this stratified structure may be applied to the rear of a supporting base material of a photographic sheet, and a release paper is provided thereon. By this technique, the release of a photoprint obtained from a photographic sheet after developing can be realized. In addition, the handling of a photoprint obtained from a photographic sheet can be greatly facilitated since it can be fixed to, e.g., a mount of an album immediately by merely pressing it strongly against the mount. |
