| 摘要 |
<p>Disclosed is an extraction bag which can be manufactured by a bag manufacture process on a conventional extraction bag manufacturing device, and the body of which can be squeezed using hanging threads. A portion of a sheet body is folded back, and point seals (29, 31) are provided in the folded-back area. Two hanging threads (35,43) are attached with the point seals (29, 31) as supporting points. Then, when the hanging threads (35, 43) are pulled in opposite directions, one hanging thread (35) to the right and the other hanging thread (43) to the left, the direction of the one hanging thread (35) is guided during pulling by the point seals (29, 31) and the end (26) of an edge seal (25) as supporting points, and the direction of the other hanging thread (43) of a tag-attached hanging thread (41) is guided during pulling by the point seals (31, 29) and the end (24) of an edge seal (23) as supporting points. By this means, the point seals (29, 31) are first pulled towards one another and then the base seals of the threads are also pulled towards one another, thereby squeezing the bag body (3) from three dimensional directions.</p> |
