Multifunctional square-bottom valve bag

• Main Authors: GONG JIAN, SHENG DAJIN, LIU HU, CHENG XIAOSI
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2022
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

The utility model discloses a multifunctional square bottom valve bag, which belongs to the technical field of square bottom valve bags, and comprises a bag body, a sealing mechanism and a limiting mechanism, the bottom end of the bag body is fixedly connected with a bottom plate, the bottom end of the bottom plate is provided with a plurality of exhaust ports, and the top end of the bottom plate is fixedly connected with an air bag at the exhaust ports; a limiting mechanism is arranged at the position, located at the exhaust port, of the bottom end of the bottom plate, a lower annular plate is fixedly connected to the position, located at the feeding port, of the top end of the bag body, an elastic film pipe is fixedly connected to the top end of the lower annular plate, an upper annular plate is fixedly connected to the top end of the elastic film pipe, and a sealing mechanism is arranged between the upper annular plate and the lower annular plate. According to the square-bottom valve bag, the pipe diameter