Side edge four-sling flat bottom square bag

Abstract

A side edge four-sling flat bottom square bag mainly comprises a main bag body composed of a square bag body with a bag cover at the upper portion and a flat bag bottom at the lower portion. The bag cover is provided with a circular feeding port. The upper edge of the bag body of the main bag body and the edge of the bag cover are singly folded inwards, and then single-seam connection is conducted. The lower edge of the bag body of the main bag body wraps the peripheral edge of the bag cover, then, double edge folding is conducted together, and parallel double-seam sewing is conducted. The square peripheral edges of the bag body are centered and aligned with four corners as center lines, sling belts are oppositely folded to form fly rings, the four fly rings are downwards sewn to the bottom along the corners and are sewn in the diagonal form at the flat bag bottom, crossing sewing is conducted at the middle crossing part, the position, away from the upper end edge by 5-20 cm, of the upper portion of the bag body is sewn to the bag body and belt bodies of the fly rings to be strengthened and fixed through a lashing strip transversely surrounding the bag body. The side edge four-sling flat bottom square bag has the beneficial effects that the structure is simple and reasonable, using is convenient, safety and reliability are achieved, hidden danger is small, the bearing strength is high, multi-time usage can be achieved, and damage is not likely to happen; and the goods filling and throwing speed can be increased, and the work efficiency can be improved.

Description

technical field

[0001] The invention relates to a square bag with four hanging sides and a flat bottom, which belongs to the technical field of logistics bag packing for industrial supplies. Background technique

[0002] In industrial bulk cargo packaging and logistics transportation, disposable container bags are usually used. This kind of container bags are used in a large amount and require high container strength, so the cost of use is also high. It is also necessary to consider the reduction of manufacturing costs; not only that, but also the speed and convenience of filling and putting out the goods, which is related to the efficiency of goods packaging and logistics transportation. In the prior art, there are certain problems in the structure of the bag body and the sling used, resulting in the use strength of most disposable container bags not being strong enough, easily damaged, the opening of the bag is unreasonable, and the filling of goods is slow and unsmooth. ...

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