| 摘要 |
PROBLEM TO BE SOLVED: To provide a free-standing bag simplifying its manufacturing steps, improving an esthetic outer appearance of the bag main body, attaining a stable quality of bag, improving a dropping strength and assuring a stable spout. SOLUTION: There is provided a free-standing bag 10 in which a synthetic resin bag main body 11 comprised of a barrel part 12 and a bottom part 13 is molded through a die and then the bag main body 11 can be folded at a pre-filling stage of ingredient agent into the bag main body 11. COPYRIGHT: (C)2004,JPO
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