| 摘要 |
PROBLEM TO BE SOLVED: To improve the accuracy of folding position as well as the bonding position of a bag making paper and permit bag making so as to cope with respective paper qualities by a method wherein a forming plate is arranged so as to cope with the upper inside position of folding line of the bag making paper to fold the same from the folding line while the bag making paper under transferring is transferred after setting the posture of the same. SOLUTION: A second folding process unit is provided with a roller conveyor 51, having the same constitution substantially as that of a first folding process unit 42, a second turning work unit 54, turning a bag making paper through double turning in accordance with folding lines and gluing, and a posture setting and transferring means, pinching the central part of left-and-right folding lines of the bag making paper from upper and lower sides under a condition that the same paper is provided with a length in the transferring direction of the same and setting the posture of the bag making paper being transferred to the second folding work unit 54. The second turning work unit 54 is provided with a second forming plate 54A, opposed to the upper side position of the folding lines, a folding unit 59, turning through double turning in accordance with the folding lines, and a guide unit 54B, for guiding the popped-up double folding part to a glue spreading part. |
