| 摘要 |
PROBLEM TO BE SOLVED: To align orientations of tag adhesion faces of a tetrahedral extraction bag by a compact device constitution in a manufacturing process of the extraction bag.SOLUTION: In a manufacturing method of extraction bags 3, a content is filled between a lateral seal in a first direction and a lateral seal in a second direction which are formed at an extraction bag sheet by welding and fusing while alternately welding and fusing the extraction bag sheet 2 on which tags 1 are pasted at prescribed intervals, and which is formed into a cylindrical body to the first direction and the second direction which intersect with each other in an upper face view. The manufacturing method has a direction control process of tag pasting faces which grip the extraction bags 3 by a gripper 20 before the extraction bags 3 are fused from the extraction bag sheet 2, and separates the extraction bags 3 by rotating them by a prescribed angle. In the direction control process, the gripper 20 rotates the extraction bag 3 which is fused in the first direction by a first angle, rotates the extraction bag 3 which is fused in the second direction by a second angle, and separates the extraction bags by aligning orientations of the tag adhesion faces of the extraction bags 3. |
