STEAM RELEASE STANDING POUCH AND CONTENT-ENCLOSING STANDING POUCH

摘要

Provided are a steam release standing pouch, which has a structure in which the sealing portion is reliably peeled, and a content sealing standing pouch formed using the pouch. The steam release standing pouch has a first vapor passage portion (42). The distance (L1) between the inner edge (42B) of the tip of the vapor passage portion and the center of maximum expansion (OA), which is the center of the portion where expansion is expected to be maximal, is shorter than either the distance (L7) between the inner edge (41 C) of the first upper side portion and the center of maximum expansion (OA) or the distance (L3) between the inner edge (43A) of the first intermediate side portion (43) and the center of maximum expansion (OA).