Method for manufacturing angulated bottom paper bag with handle in rotary type bag manufacturing machine

摘要

The invention concerns a rotary type bag manufacturing machine which feeds continuously material paper (R) to form angulated bottom bags (B) with handles (T) in which a top edge (S 2 ) with the handles (T) pasted can be folded toward an inside in the manufacturing process. Material paper (R) wound in a roll is continuously fed out. After forming lateral slits ( 15 ) and Letter-J-shaped nicks ( 16 ) on the material paper (R) by an incising device ( 4 ), reinforcing papers (T 1 ) for handles (T) formed by a handle forming device 2 are pasted. Then, a cutting device ( 6 ) cuts off the material paper (R) on a cut line aligned with the lateral slits ( 15 ) to thereby form the material paper (R) with the handles (T) which remains unfolded in a plane. A cut end portion (S 2 ) with each handle (T) pasted is folded toward an inside to invisibly cover each reinforcing paper (T 1 ) for the handle (T). Thereafter, angulated bottom paper bags (B) are formed through a paper tube forming process and a bottom folding process.