Soft packing bag

Abstract

The invention provides a soft packing bag comprising a hollow cylindrical flexible bag body, a top wall and a bottom wall. The top wall and the bottom wall are arranged at the two opposite ends of the flexible bag body correspondingly. Lifting belts are arranged on the two opposite sides of the flexible bag body correspondingly. A flexible material neck for materials to pass by is arranged on the top wall of the flexible bag body. An opening tying rope is arranged on the flexible material neck. A cover body is further arranged at the end, close to the top wall, of the flexible bag body. The cover body is connected with the periphery of the flexible bag body through a first zipper and completely covers the top wall. An annular soft cushion is further arranged in the cover body. A containing part for containing the flexible material neck is arranged in the annular soft cushion so that the top of the soft packing bag can be smooth. Multiple containing grooves communicating with the containing part are formed in the annular soft cushion. Gas-permeable soft bags containing drying agents are placed in the containing grooves. The soft packing bag mentioned above is beneficial to soft packing bags subsequently stacked, and the soft packing bag can prevent moisture in air from entering the bag from the tied opening in the end portion of the soft packing bag.

Description

[0001] 【Technical field】 [0002] The invention relates to a packaging bag, in particular to a flexible packaging bag. [0003] 【Background technique】 [0004] Flexible packaging bag is a kind of flexible transportation packaging container. Compared with other rigid packaging, flexible packaging bag is more economical and can achieve the purpose of optimal utilization. At the same time, flexible packaging bag has the advantages of convenient transportation and labor cost saving. Therefore, flexible packaging bag is widely used in food , grain, medicine, chemical industry, mineral products and other powdery, granule, lumpy items transport packaging field. With a crane or forklift during the handling process, the unitized transportation and loading and unloading of flexible packaging bags can be realized. It is suitable for bulk bulk powder and granular materials. It is precisely because of the above reasons that developed countries generally use ton packaging bags as packaging ...

AI Technical Summary

Problems solved by technology

[0005] Chinese utility model patent CN203682240U discloses a ton packaging bag for battery powder. The top of the bag is provided with a cylindrical feeding part, and the bottom is provided with a cylindrical discharging part for unloading. However, the bottom is provided with a cylindrical discharging part. The material part makes the bottom of the flexible packaging bag uneven, which is not conducive to subsequent palletizing

At the same time, both the cylindrical feeding part and the discharging part are tied tightly with a tie rope. If you are not careful, if the tie is not tight, the airtightness of the flexible packaging bag will be reduced.

When the flexible packaging bag is used to transport battery powder, talc powder and other materials, the moisture in the air is easy to enter the bag through the ties of the cylindrical feeding part and the discharging part, which will cause problems such as agglomeration and deterioration of the powder. affect the quality of the material

In addition, general flexible packaging bags usually include two cylindrical necks at the feeding part and the discharging part, resulting in a decrease in the sealing performance of the flexible packaging bag.

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