INSTALLATION FOR PRODUCING PLASTIC BAGS Russian patent published in 2018 - IPC B65D30/18 

FIELD: manufacturing technology.

SUBSTANCE: purpose of the invention is to provide new and improved plant that can sequentially manufacture plastic bags, each of which includes an end surface with a projection, without the need to specially feed the material of the bottom insert. First web 1 of the sheet material is folded along the first line 5 fold near the side edge 21 the first web 1 sheet material, while the second web 2 of the sheet material is folded along the second line 6 fold near the side edge 22 the second web 2 sheet material. First bent section 23 is formed in the first web 1 sheet material. There is a distance between the side edge 21 and the first fold line 5 which, after folding the first and second sheet materials 1 and 2, is more than twice the distance between the respective side edge 22 and the second fold line 6 by a predetermined distance L3.

EFFECT: end surface is obtained from the first bent section 3, the projection is formed by a predetermined distance L3.

3 cl, 6 dwg