| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a packaging bag having a spout which improves the barrier properties and the hygienic properties of a content in the packaging bag, and at the same time, easily and surely opens a partitioning means between a plurality of divided chambers, prevents a wrong use by an unmixed state from occurring, and also, can prevent the content from leaking by pinholes which are easy to occur at the attached section of the spout. <P>SOLUTION: A laminated film at least the internal layer of which is made of a resin having heat-sealability is made to face each other, and stacked, and the peripheral edge sections are heat-sealed to form peripheral edge sealed sections 15 and 16. Then, a spout 9 consisting of a plastic injection-molded article is fixed between the internal layers of a housing section 5 for this packaging bag 1 having the spout. In the packaging bag 1 having the spout, an isolation sealed section 20 which isolates the spout 9 from the housing section 5 of the packaging bag is formed. The isolation sealed section 20 consists of a weak sealed section, and also, in a vicinity of the fixing section of the spout 9, a vacant chamber 22 which is surrounded by a peripheral edge sealed section 23 and the isolation sealed section 20 is provided. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
