PROBLEM TO BE SOLVED: To provide an interdental floss package which can be easily aligned and loaded, can be resealed, and can stand on its own without losing its aligned state even after opening. SOLUTION: An interdental floss 2 having a floss portion F and a main body portion 60 that stretches and supports the floss portion on one side, and a film package in which a plurality of interdental floss are aligned in a predetermined direction and loaded. It is provided with 10. The main body has an alignment assisting portion 70 provided with a contact surface that intersects a predetermined direction, and when a predetermined number of interdental flosss are lined up in a predetermined direction, adjacent main bodies come into contact with each other on the contact surface. The floss aggregate 3 is formed, and the film package has a resealing portion 22 capable of resealing the loaded interdental floss and a gusset portion 20 provided on the bottom portion 13 so as to be self-supporting. The gusset portion supports the other side of the main body portion of the loaded floss aggregate from below, and urges the floss aggregate from both sides in a predetermined direction in a direction in which the contact surfaces approach each other. [Selection diagram] Fig. 1【課題】歯間フロスを整列して装填させやすく、再封緘が可能で開封後にも整列状態が崩れにくく自立可能な歯間フロス包装体を提供する。【解決手段】フロス部Ｆと、フロス部を一方側で張設して支持する本体部６０とを有する歯間フロス２と、歯間フロスが所定方向に整列して複数装填されるフィルム包装体１０とを備える。本体部は、所定方向と交差する当接面が設けられた整列補助部７０を有するとともに、歯間フロスが所定方向に所定数並んだときに隣り合う本体部同士が当接面で互いに当接してフロス集合体３を形成し、フィルム包装体は、装填された歯間フロスを再封可能な再封緘部２２と、底部１３に設けられたマチ部２０とを有し自立可能に設けられ、マチ部は、装填されたフロス集合体における本体部の他方側を下方から支持し、フロス集合体を所定方向両側から当接面同士が互いに接近する方向に付勢する。【選択図】図１
