Abstract: Disclosed is a pouch equipped with an internal pressure discharge unit capable of automatically discharging gas or steam while preventing contents from being solidified. The pouch includes a sealing part formed at a side end of the pouch, a content retaining part, a sealing weak part formed at an upper portion of the sealing part, a content holding part positioned in line with the sealing weak part such that a front end of the content holding part is open when the sealing weak part is widened, and a gas discharge line formed in the content holding part and communicated with an outer end of the sealing part. The contents are prevented from being leaked out of the pouch even if the heating time is extended, and the gas is prevented from being discharged out of the pouch, thereby minimizing evaporation of moisture from the contents.

Abstract: Disclosed is a vinyl pouch usable in a microwave oven. The vinyl pouch fabricated using vinyl sheets in a multi-layer structure allows steam to be naturally emitted when contents in the vinyl pouch are heated in the microwave oven. The vinyl pouch prevents the contents from being leaked due to the explosion of the vinyl pouch caused by the expansion of the vinyl pouch. The vinyl pouch prevents the contents of the vinyl pouch from being dried. The vinyl pouch includes an upper sealing part and side sealing parts that are heat-sealed, a content retaining part having an open lower portion, and an internal pressure discharge unit comprising a sealing weak part open due to an internal pressure of the content retaining part, and a content holding part including an introduction line open due to opening of the sealing weak part and gas discharge lines above the sealing part.