| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid storage bag manufacturing method which can achieve stable pouring of liquid.SOLUTION: In a laminated film forming the front and rear surfaces of a liquid storage bag, the tensile modulus of elasticity of a substrate film is larger than that of a sealant film. A first embossed part 30' which projects outward from a flat part is formed on at least one of the front and rear surfaces. The first embossed part 30' is formed with a top part which extends along and inside the outline of the first embossed part 30' in a plan view. When a part from the outline to the top part of the first embossed part 30' in the first embossed part 30' is designated as a wall part 31' and a part surrounded by the wall part 31' is designated as an intermediate part 32', an embossing step is performed so that the wall part 31' is extended and so that the intermediate part 32' is not extended or is extended smaller than the wall part 31'. |
