PROBLEM TO BE SOLVED: To provide a means for imparting heat resistance to a chemical container without performing difference heat treatment after a cold parison process of injection stretch blow molding.SOLUTION: There are provided the method of manufacturing a chemical container and the chemical container including a process of producing a preform from resin material whose peak temperature of a heat absorption peak in the highest temperature side observed by DSC measurement ranges from 120 to 180°C and a melt flow rate measured under conditions of temperature of 230°C and the loading of 21.2 N ranges from 0.3 to 10g/10 min, a process of heating the preform in the range defined by setting a temperature at which the resin material of 35 mass% with respect to the whole mass of the resin material melts as a lower limit temperature and setting a temperature lower than the peak temperature by 5°C as an upper limit temperature, a process of stretching the preform in the axial direction, and a process of pressing the stretched preform in a metal mold having a shape in which a ratio of a long axis to a short axis (long axis/short axis) in a surface vertical to the axis direction ranges from 1 to 5.COPYRIGHT: (C)2013,JPO&INPIT【課題】コールドパリソン法射出延伸ブロー成形後に別途の熱処理を行うことなく、薬液容器に耐熱性を付与する手段を提供する。【解決手段】DSC測定により観測される最も高温側の吸熱ピークのピーク温度が120~180℃の範囲であり、かつ230℃、荷重21.2Nの条件下で測定されるメルトフローレートが0.3~10g/10分の範囲である樹脂材料からプリフォームを作製する工程と、前記樹脂材料の全体質量に対して35質量%の樹脂材料が溶融する温度を下限温度とし、前記ピーク温度よりも5℃低い温度を上限温度とする範囲の温度に前記プリフォームを加熱する工程と、前記プリフォームを軸方向に伸張させる工程と、伸張させた前記プリフォームを、軸方向に直交する面の長軸と短軸との比(長軸/短軸)が1~5である形状を有する金型内で加圧する工程と、を含む、薬液容器の製造方法および薬液容器である。【選択図】なし
