| 摘要 |
PROBLEM TO BE SOLVED: To easily retain the opened or closed state of the opening of a bag body when it is required and perfectly incinerate the opening together with the bag body, by attaching a plastically deforming wire-form body and/or a tape-form body made of an inflammable thermoplastic resin to at least a part of a sheet-form body or a bag-form body made of a flexible material. SOLUTION: A bag-form body 2 is made of a flexible material such as film or cloth, and the opening thereof can not be retained in the opened or closed state for itself and also the flexible material can not be retained in the opened or closed state for it self when a bag-form body is made of nonwoven cloth, sheet, net except film or cloth. Both-face tapes are stack on the opening 3 of the bag-form body 2 through various methods such as adhesion, welding with heat, or insertion into turning-back parts of the edges, in the shape- retaining body 4 and these methods are appropriately selected in accordance with the shape of the bag-form body. In this way, a flexible sheet-form body or a bag-form body without the self-standing property can retain an arbitrary shape by the characteristic of a shape-retaining material attached to a part thereof. |
