Production method of composite railway transportation lined packaging bag provided with air bags

Abstract

The invention relates to the field of packaging materials, in particular to a production method of a composite railway transportation lined packaging bag provided with air bags. The packaging bag comprises a bag body provided with feeding pipes; the bag body adopts a rectangular structure comprising an upper sheet, a lower sheet, a left sheet, a right sheet, a front sheet and a back sheet; a plurality of round mounting holes arranged straightly are formed in the upper sheet; the lower ends of the feeding pipes are connected in the mounting holes; the bag body and the feeding pipes adopt dual-layer structures; and the two sides of the front sheet and the two sides of the back sheet communicate with the triangular buffer air bags. The packaging bag adopts the dual-layer bag body structure, has the good moisture-proof effect, is firm in structure and convenient to use, can relieve impact waves produced during feeding and can increase the feeding speed.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a production method of a composite railway transport liner packaging bag with an air bag. Background technique [0002] When transporting powder materials such as flour in containers, in order to prevent pollution and leakage, plastic bags are usually used as inner packaging materials. Chinese patent 2012200411217 discloses a "special packaging bag for powder used in container transportation". An air blowing port is provided on one side of the bag body, and an air blowing pipe extending into the bag body is provided on the air blowing port, and an air bubble belt is arranged in the air blowing pipe. , When unloading, blow air into the blowing pipe through the blowing port, which is helpful for powder unloading. Although this kind of packaging bag is convenient for unloading, the moisture-proof and sealing performance of the single-layer bag body structure is poor. Due to the l...

AI Technical Summary

Problems solved by technology

Although this kind of packaging bag is convenient for unloading, the moisture-proof and sealing performance of the single-layer bag structure is poor. Limited by the thickness of the material, the bag body is easy to puncture or tear, resulting in air leakage or moisture.

Another Chinese patent 2014205065915 that I applied for discloses a "sewn-type double-layer composite liner packaging bag for railway transportation". Polypropylene woven fabric with good tensile strength has the characteristics of firm structure, good moisture-proof effect, and convenient use. However, in actual use, because the inner bag is sealed and airtight, powder materials will be produced when they are injected into the bag from the feeding port. A large shock wave, on the one hand, is easy to burst the inner bag, and at the same time, a large reverse airflow will be formed at the feeding port, blowing out the powder at the bag mouth, affecting the speed and efficiency of feeding

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