Patent ID: 9694952
Date: 2017-07-04
CPC Classifications: B31B,B65D

Claim:
1. A method for manufacturing a large-capacity flexible container including a body with, downwards, a bottom comprising an emptying spout, and upwards, a cover, the cover including a filling spout, the method comprising: cutting out from a sheet of flexible material four main panels ( each of the main panels having in part a square or rectangular shape ( each of the cover panels having in part a substantially trapezoidal shape ( forming a fold ( fixing said fold to form at least one loop per main panel, and assembling and fastening to each other the four main panels and the four cover panels, the folds being arranged on the outside of the container, the base of each cover panel being assembled to the upper side of the corresponding main panel, the main panels being assembled two-by-two at least along their lateral sides and their corresponding extensions, the lateral sides in correspondence of the cover panels being assembled two-by-two to each other, the upper ends of the tongues being left free so as to form an upper opening of the filling spout, substantially square in shape.