| 摘要 |
A method of forming a gusseted bag, in which a flattened tube with opposed side gussets 14a, 14b, is formed and the bottom of the tube is closed such that it will create four interior recesses between the closed bottom and trapped folded regions of said side gussets. An adhesive maybe selectably provided at appropriate parts of the bag material prior to the formation of the flattened gusseted tube such that during or after the gusseting step, the surfaces defining at least parts of the four interior recesses of the bag become secured together so as effectively to close these recesses and prevent significant ingress of bag contents thereto. |
