| 摘要 |
<p>A self-supporting bag comprises a bag main body (11) having a body portion (20) and a bottom portion (30) being blow molded or injection molded; wherein the body portion (20) has a filling port forming portion (22) and a pouring port forming portion (24); wherein the main body (11) comprises ridge line portions (41 to 47) for flattening; and wherein the bag main body (11) is comprised of synthetic resin.</p> |
