| 摘要 |
<p>The present invention relates to a new type of a packaging sack and a manufacturing method thereof. In order to prevent the leakage of contents put into the sack and to facilitate easy insertion of the contents, the sack is made of paper or synthetic resin folded and the lower part thereof is sealed. In addition, the upper part of the sack has an inlet to put in contents, which extends to an inner space in which the contents are stored, and a pipe inserting unit in which an inserting pipe is inserted to put in the contents is additionally provided to the upper part. The upper part of the pipe inserting unit is entirely attached to be fixed on the lower surface of the upper part of the sack to prevent any space between the pipe inserting unit and the lower surface of the upper part.</p> |
