PROBLEM TO BE SOLVED: To provide a plate laver having a textured pattern, which hardly cause strength deterioration without losing flavor and a production method which allows easy operation with a high operating speed.SOLUTION: A plate laver is irradiated with a carbon dioxide gas laser beam, such that a mesh-like burn is displayed as a texture pattern. The carbon dioxide gas laser beam is scanned in the line width direction or the line axial direction of the texture pattern to be displayed, so that the plate laver is intermittently or continuously irradiated with the carbon dioxide gas laser beam so as to be burnt during the scan. After scanning one line, the carbon dioxide gas laser beam is moved to the direction intersecting the scanning direction. At the moved position, the carbon dioxide gas laser beam is scanned in the same direction as in the scan, so that the portion intermittently or continuously irradiated with the carbon dioxide gas laser beam is burnt during the scan. The scanning in the line width direction or the line axial direction, the movement to the direction intersecting the scanning direction, the scanning after the movement, the carbon dioxide gas laser beam irradiation during the scan are repeated, so that a mesh-like burn is displayed as a texture pattern on the plate laver.COPYRIGHT: (C)2014,JPO&INPIT【課題】 強度劣化が少なく、香りが損なわれない模様付き板海苔と、作業が容易で、作業速度の速い製造方法を提供する。【解決手段】 板海苔に炭酸ガスレーザビームを照射し、その焦げ跡によって模様を表示し、その焦げ跡をメッシュ状とした。表示する模様の線幅方向又は線軸方向に炭酸ガスレーザビームを走査させ、走査中に炭酸ガスレーザビームを間欠照射又は連続照射して板海苔を焦がし、一本の走査の終了後に炭酸ガスレーザビームを走査方向と交差する方向に移動させ、その移動位置で炭酸ガスレーザビームを走査と同じ方向に走査させ、その走査中に炭酸ガスレーザビームを間欠照射又は連続照射して照射部分を焦がし、線幅方向又は線軸方向への走査、走査方向と交差する方向への移動、移動後の走査、走査中の炭酸ガスレーザビームの照射を繰返すことにより焦げ跡をメッシュ状にして、板海苔に模様を表示するようにした。【選択図】図1
