A two-in-one PE packaging bag and its processing device

Abstract

The invention provides a two-in-one PE packaging bag and its processing device. The packaging bag includes an inner bag and an outer bag. The width of the inner bag is the same as that of the outer bag. The length of the inner bag is longer than that of the outer bag. The sides of the inner and outer bags are fixedly connected. , the bottom is nested, not connected together. The processing equipment includes a blown film machine, a folding machine and a bag making machine. The polyethylene particles are heated and extruded by the blown film machine to obtain a double-layer cylindrical film. Layer sheet material roll, double-layer tube material roll and single-layer sheet material roll are rewound together by an edge folding machine to obtain a bottom four-layer upper double-layer bagging raw material roll, which is finally cut by a hot knife into a bag-making machine Finished bag. The two-in-one PE packaging bag of the present invention has a higher load-bearing strength than ordinary single-layer PE packaging bags. While meeting the strength requirements during use, it avoids the cumbersome procedures and waste caused by bagging in the prior art, and is convenient to use; Sequential mass production to meet a large number of production and use needs.

Description

technical field [0001] The invention belongs to the technical field of packaging bags, and in particular relates to a two-in-one PE packaging bag and a processing device thereof. Background technique [0002] In the prior art, for a single food packaging bag, due to insufficient strength, it is prone to the problem of bottom rupture and leakage when carrying heavy objects. Usually, in order to enhance the load-bearing capacity, people are accustomed to using two bags together. This method of use is cumbersome It is troublesome and wasteful. In order to solve the problem that the single packaging bag in the prior art has little load-bearing capacity and is easy to be damaged, people try to design the single bag as a structure with a thin upper part and a thicker lower part, but experiments have shown that the Only when the length of the bag body reaches 1.5m, can the load-bearing capacity be significantly improved, but the effect is not good for finished bags with a height of...

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