The purpose of the present invention is to improve the productivity of a sealed package. The present invention relates to a sealed bag having the inner surface of a sealed storage space (20) in an aseptic state, forming an opening part (50) by being partially cut after being inserted into an aseptic room, filling the opening (50) with contents (60) by inserting a filling nozzle (142) into the opening part, and depositing the opening part (50). The present invention includes: an outer sealing part (10) forming the storage space (20)； a nozzle insertion space (30) protruding outwards from the storage space (20)； and a port (40) installed in the outer sealing part (10), and connected to the storage space (20). The nozzle insertion space (30) is formed to form the opening part (50), into which the filling nozzle (142) is inserted, by being cut throughout a width (31) vertical to the protruding direction.(과제) 밀봉 패키지의 생산성을 향상시키는 것을 목적으로 한다.(해결수단) 본 발명은, 밀봉된 수용공간(20) 내면이 무균상태로서, 무균실내로 반입된 후에, 일부를 절단하여 개구부(50)를 형성하고, 개구부(50)에 충전노즐(142)을 삽입하여 내용물(60)을 충전하고, 개구부(50)를 용착하는 밀봉백으로서, 수용공간(20)을 형성하는 외주밀봉부(10)와, 수용공간(20)으로부터 외주측을 향하여 돌출하는 노즐삽입공간(30)과, 외주밀봉부(10)에 설치되고, 수용공간(20)에 접속되는 포트(40)를 구비하고, 노즐삽입공간(30)은, 그 돌출하는 방향과 수직인 폭(31)에 걸쳐서 절단됨으로써, 충전노즐(142)을 삽입 가능한 개구부(50)를 형성하도록 구성되는 것을 특징으로 한다.
