Composite packaging bag

Abstract

The present invention relates to the field of package bag technology, in particular, it is a composite package bag with excellent tensility. It is made up by adopting PE.PP or other plastic material, and includes internal and external two layers which are press-combined and bound together, its internal layer is made up by using PE material, and its external layer is made up by adopting PP material which is not undergone the process of two-way stretching treatment, said external layer is divided into two layers, including stretch-resisting layer and heat-resisting layer, said heat-resisting layer is made up by adopting PP material which is not completely stretched, and the inside surface of the stretch-resisting layer is used for printing surface, so that the pattern can be printed on the inside surface of stretch-resisting layer, and can obtain effective protection.

Description

Technical field: [0001] The invention relates to the technical field of packaging bags, in particular to a composite packaging bag with excellent tensile strength. Background technique: [0002] With the faster and faster pace of people's life, various convenient products are born. For example, the hardcover rice that can be seen everywhere in supermarkets or other general stores, this kind of rice that has been screened by multiple layers, saves many unnecessary troubles when eating, so it is very popular among consumers. However, when people buy it, they find that the packaging bag of this kind of rice is not strong enough, and the handle hole of the packaging bag often breaks, causing the user to walk with both hands, which is both strenuous and embarrassing. At present, similar packaging bags all have this shortcoming more or less. Due to the composite material used in this kind of packaging bag, it includes inner and outer layers. The inner layer is generally made of ...

AI Technical Summary

Problems solved by technology

However, the melting point of the PP material that has not been biaxially stretched is not much different from that of the low-layer PE material, so it is easy to cause the outer layer of PP to melt, while the inner layer of PE has not yet fused. The main reason for biaxially stretched PP

[0004] Finally, for the same type of packaging bags currently on the market, the pattern is generally printed on the surface of the outer layer during printing, which can easily cause the printed pattern to be worn during transportation, or the printed patterns of the two packaging bags will be bonded back when stacking. together

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