PROBLEM TO BE SOLVED: To provide a fruit-covering bag the length of the blank space part of which is reduced as short as possible in the young fruit period of a fruit, and the length of the blank space part is elongated in accordance with the enlargement of the fruit in the maturing period of the fruit.SOLUTION: The fruit-covering bag is produced through: doubly folding a sheet so that a superimposing part 10 remains at one end of the almost-oblong sheet followed by superimposing the superimposing part 10 on the other end of the sheet bonding the superimposing part 10 and the lower edge part 8 of an outer bag 3 to make the outer bag 3 forming a blank space part 15 to the upper part of the superimposing part 10 of which the adhesive is not applied and forming an adhesive part 14 (at the lower part of which a strongly adhesive area 14a is formed, and at the upper part of which a slightly adhesive area 14b is formed). The superimposed part 10 is bonded via the slightly adhesive area 14b adjacent to the blank space part 15 in the young fruit period, the superimposing part 10 to turn into the blank space part 15 by the expanding pressure of a fruit (A) while corresponding to the growth of the fruit (A), the expansion pressure is applied on a dotted adhesive part 17 of the slightly adhesive area 14b and the dotted adhesive part 17 is separated apart when the fruit (A) is further enlarged, a non-adhesive part 16 and the blank space part 15 are connected to each other to enlarge the outwardly widened area.COPYRIGHT: (C)2009,JPO&INPIT【課題】果実の幼果期において余白部を可及的に短く、果実の成熟期において果実の肥大化に伴って余白部の長さを延長することができるようにする。【解決手段】略長方形のシート体の一端に重ね部10を残すようにしてシート体を2つ折りした後、重ね部10をシート体の他端に重ね合わせ、その重ね部10と外袋3の下縁部8を接着して外袋3を形成する。重ね部10の上部は接着剤を塗布しない余白部15を形成し、この下部に接着部14(下部に強接着域14a、その上部に弱接着域14b)を形成する。幼果期に余白部15と隣接する弱接着域14bによって重ね部10を接着し、果実Aが生育するのに伴い、その膨張圧力によって余白部15となる重ね部10が外側に広がり、さらに果実Aが肥大化した際、その膨張圧力が弱接着域14bの点付け接着部17に加わって点付け接着部17が剥れ、非接着部16と余白部15とが連続し、外側に広がる領域が延長される。【選択図】図1
