| 摘要 |
The invention is an apparatus for imparting concaves/convexes which is an apparatus for imparting concaves/convexes to a sheet-like object by passing the sheet-like object between a pair of rollers facing each other and in which at least one of the rollers is a roller a surface of which is formed by laminating a single or a plurality of circular plates (20) each provided with concaves/convexes at a peripheral edge thereof. Further, an interval keeping mechanism (28) is provided between the circular plates provided with concaves/convexes at the peripheral edges. Further, at least one of the rollers is a roller formed with a roller surface by laminating a single or a plurality of circular plates each having only convexes of concaves/convexes portions at a peripheral edge thereof. By the roller, convexes can be imparted to one face of front and back surfaces of a sheet-like object. The sheet-like object can be a thin metal plate, a metal mesh, a corrugated board, a synthetic resin plate, a nonwoven fabric, a synthetic resin film or a synthetic resin paper sheet.
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