| 摘要 |
The invention provides a self-supporting bag (10) in which a synthetic resin bag main body (11) constituted by a body portion (20) and a bottom portion (30) is molded preferably by a metal mold, and the entire main body (11) is set in a folded state in a step before filling the bag's main body (11), wherein the folded state of the bag's main body (11) is formed by folding the entire bottom portion (30) in parallel to the body portion (20).
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