A pull exhaust type air column bag

Abstract

The invention relates to the technical field of packaging equipment, and discloses a pull exhaust type air column bag, including air column strips, the air column strips are connected as a whole by vertical heat sealing lines, and the top of the air column strips is fixed A sealed zipper and a zipper pull are connected, an air stop valve and a fixed seat are fixedly installed inside the air column strip, a top plate is movably inserted into the inside of the fixed seat, and a push rod is fixedly connected to the bottom of the zipper pull. The bottom of the top plate is provided with an exhaust hole connected with the square hole. The pull exhaust air column bag seals the top of the air column bag through the sealed zipper and zipper head. When inflating, the airflow enters the inflation chamber of the air column through the through hole and the air stop valve. When exhausting, pull it open Sealed zipper, the zipper head drives the top plate to open the two air valve membranes of the air stop valve during the movement process, and the gas in the inflatable chamber can be discharged through the vent hole and through hole, which is convenient for inflation and exhaust, and is convenient for the air column bag storage and recycling.

Description

technical field [0001] The invention relates to the technical field of packaging equipment, in particular to a pull exhaust air column bag. Background technique [0002] During the packaging and transportation of fragile items such as LCD screens, air column bags are usually used as buffer protection devices. During the production of air column bags, two layers of reverse air stop valves will be attached to the inner wall of each air column Membrane, when inflated, the gas enters the interior of the air column through the air valve membranes on both sides. After inflation, the air pressure in the air column firmly presses the two valve membranes and locks the valve so that the air cannot be discharged through the valve. Therefore The air column bag will not leak after being inflated, but the inflatable bag with this structure cannot be exhausted. After inflation, it takes up a lot of space and is inconvenient to store. After receiving the goods, people can only puncture the ...

AI Technical Summary

Problems solved by technology

[0002] During the packaging and transportation of fragile items such as LCD screens, air column bags are usually used as buffer protection devices. During the production of air column bags, two layers of reverse air stop valves will be attached to the inner wall of each air column Membrane, when inflated, the gas enters the interior of the air column through the air valve membranes on both sides. After inflation, the air pressure in the air column firmly presses the two valve membranes and locks the valve so that the air cannot be discharged through the valve. Therefore The air column bag will not leak after being inflated, but the inflatable bag with this structure cannot be exhausted. After inflation, it takes up a lot of space and is inconvenient to store. After receiving the goods, people can only puncture the air column bag and throw it away. , the air column bag has become a disposable consumable, and the punctured air column bag cannot be recycled by the factory, which not only causes a great waste of resources, but also affects the natural environment.

[0003] For example, Patent No. CN 108408251 A proposes multiple use of a two-way air valve and an air column bag, including a bag body and multiple use of a two-way air valve. When inflated, the movable piece fits tightly between the two diaphragms to close the air inlet. When deflated, the movable piece is rotated to stretch the two diaphragms to exhaust, but the movable piece is always inserted Between the two diaphragms, it will affect the sealing performance of the two-way air valve and reduce the service life of the two-way air valve. All the movable pieces in the air column bag are connected by two pull ropes. The pull rope is a flexible structure. The stability is poor, and the effect of pulling the pull rope to drive the movable piece is not ideal, and when inflating and exhausting, the airflow may drive the movable piece to rotate, which affects the use

[0004] For example, the patent No. CN 206813670 U proposes a convenient air column bag for exhausting, which includes an air column formed by thermal plastic sealing of several outer air chamber films and inner air films, and has a gap on the air column. The upper film and the lower film are separated, and then the exhaust pipe is inserted into the one-way valve to exhaust. Since the upper film and the lower mold are pasted at the gap by self-adhesive, the self-adhesive is easily affected by environmental factors such as humidity and temperature. As a result, the viscosity is reduced, so the sealing firmness of the gap is poor, and air leakage is prone to occur after inflation, and the device needs to be equipped with a special exhaust pipe, which is easy to be stuck in the air column bag during transportation. Leakage, affect the use

Images