Bag for carrying bulk cargo, has internal surrounding wall provided with set of spaced strengthening folds, and fastening parts fastening section and back-folded section at outside surrounding wall, where parts are extended by liquid seal

摘要

The bag has an outside container body (20) provided with an outside surrounding wall (21), and an internal container body (30) arranged within the outside container body and provided with an internal bottom wall and an internal surrounding wall (31). The internal surrounding wall has a set of spaced strengthening folds (313). Each fold has a section bent outward, where the section includes a back-folded section. Fastening parts of the internal surrounding wall fasten the section and the back-folded section at the outside surrounding wall, and are extended by a hot-pressed liquid seal.