| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a simple and inexpensive mouth tight sealing structure which improves the adhesion property of the mouth of a bag-like object. SOLUTION: A mouth 28 communicating with an internal space 1a of the content protective case 1 is provided with the tight sealing structure. The mouth tight sealing structure is provided with a part having plural recessed bars 37 and projecting bars 38 disposed in the transverse direction of the mouth, alternately in the longitudinal direction of the mouth, on the opposite inside surfaces of two superposed soft sheets 29 and 30 having self-sealability. The structure has rugged meshing tight contact parts 36 formed by the opposite recessed bars 37 and projecting bars 38 when both sheets 29 and 30 overlap each other. The adhesion property is improved by the plural fitting points of the respective recessed bars 37 and projecting bars 38 of these sheets 29 and 30.</p> |
