The present invention addresses the problem of providing a packaging container which exhibits excellent freshness retention capacity with respect to contents such as fruit and vegetables as a result of being provided with appropriate gas permeability, appropriately inhibits infiltration of foreign substances in air, and is capable of being degassed in a short period of time. Provided is a packaging container including a polymer film, wherein the oxygen permeability at 22 DEG C and 40% RH is 500-50000 cc/m2/day/atm, the polymer film is provided with at least one opening, the length of the opening is 0.5-7 mm, and the width of the opening is less than 10 [mu]m. Alternatively, provided is a packaging container including a polymer film, wherein the oxygen permeability at 22 DEG C and 40% RH is 2000-50000 cc/m2/day/atm, a protrusion having at least one opening is provided to the polymer film, the length of the opening is 0.5-7 mm, and the width of the opening is such that perforation cannot be confirmed by observation at 4-times magnification using an optical microscope.本發明提供一種藉由具有適當的氣體透過性,蔬果等內容物的鮮度保持機能優異之包裝容器,其係適當地抑制空氣中的異物侵入,而且能夠在短時間脫氣之包裝容器。該課題可藉由下述包裝容器來達成:一種含有高分子薄膜而成之包裝容器,其係在22℃、40%RH下的透氧度為500~50000cc/m2/day/atm,該高分子薄膜具有至少1個開口部,該開口部的長度為0.5~7mm,該開口部的寬度未達10μm;或一種含有高分子薄膜而成之包裝容器,其係在22℃、40%RH下的透氧度為2000~50000cc/m2/day/atm,於該高分子薄膜設置了具有至少1個開口部的凸部,該開口部的長度為0.5~7mm,該開口部的寬度為在光學顯微鏡下進行倍率4倍的觀察時無法確認貫通的寬度。
