| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bag into which liquid (water or hot water) can be poured when used, and from which the liquid can be discharged (drained) after an immersion process in which the liquid contacts the content, and a manufacturing method of the same. <P>SOLUTION: The bag includes a bag body portion made from a liquid impermeable film and having a pair of plane surface portions constituting at least the front side and back side of the bag, an opening end portion disposed at an end of the bag body portion and being an opening portion or already being an opened portion, a zipper provided in proximity to the opening end portion and resealable of the opened portion after it is opened. The zipper is formed with a pair of engagement pieces engaging with each other. Each of the engagement pieces crosses from one end to the other end of the opened portion in the width direction in an inner face of the pair of plane surface portions, and is joined with an opposing position of the engaged counter part. The joined surface between at least one of the engagement pieces and the plane surface portion is permeable to a liquid from the inner space of the bag body portion to outside, and has a non-joined area through which solid materials larger than a predetermined size cannot pass. <P>COPYRIGHT: (C)2009,JPO&INPIT |
