PROBLEM TO BE SOLVED: To provide a wrapped rice lump and a method for unwrapping the wrapped rice lump that can be unwrapped by a simpler method.SOLUTION: A wrapping sheet 1 is formed to hold a sheet-like food 4 between a rectangular outer film 2 and an inner film 3 disposed on the rear face side of the outer film 2. The outer film 2 has, substantially at the longitudinal center, a split part 21 formed with slits 24 at predetermined spaces over the width direction. The inner film 3 is formed by overlapping two film pieces 31, 31 substantially at the longitudinal center part of the outer film 2 and welding the overlapped film pieces to the outer film 2 at the peripheral edge of the sheet-like food 4. The rice lump 6 is placed on the inner film 3 of the wrapping sheet 1, and the rice lump 6 is wrapped in the wrapping sheet 1 so that the peripheral surface of the rice lump 6 faces the split part 21 of the outer film 2 through the inner film 3 and the sheet-like food 4. The end of the wrapping sheet 1 is sealed by a fastening means 5.COPYRIGHT: (C)2013,JPO&INPIT【課題】より簡単な方法で飯塊の包装を解くことのできる包装飯塊及びその包装を解く方法を明らかにする。【解決手段】包装シート1は、長方形の外フィルム2と該外フィルム2の裏面側に配備された内フィルム3との間にシート状食品4を挟んで構成され、外フィルム2は、長手方向の略中央に幅方向に亘って、所定間隔の切込み24を形成してなる裂け部21を有し、内フィルム3は、2枚のフィルム片31,31を外フィルム2の長手方向の略中央部で重ね合わせ、シート状食品4の周縁にて外フィルム2と溶着して構成され、前記包装シート1の内フィルム3上に飯塊6を載せ、飯塊6の周面が内フィルム3及びシート状食品4を介して外フィルム2の裂け部21と対向するように、包装シート1で飯塊6を包み、包装シート1の端部を止着手段5により封止してなる。【選択図】図8