Environment-friendly packaging bag and preparation method thereof

Abstract

The invention relates to the technical field of packaging bags, in particular to an environment-friendly packaging bag and a preparation method thereof. The method comprises the following steps that 1) a middle paper layer is rolled; 2) a bottom paper layer is subjected to die cutting; 3) gluing is conducted, and gluing treatment is conducted on the two sides of the middle paper layer; 4) hot pressing is conducted, a surface paper layer, the middle paper layer subjected to gluing treatment and the bottom paper layer subjected to die cutting treatment are bonded to obtain composite paper for preparing a bag body; 5) cutting is conducted, and the composite paper obtained in the step 4) is subjected to cutting, flanging and bag making; and 6) printing is conducted, the surface of an initial product of the environment-friendly packaging bag prepared in the step 5) is subjected to printing treatment to obtain a finished product of the environment-friendly packaging bag. The preparation method of the environment-friendly packaging bag has the characteristics of being simple in process flow, high in production efficiency and low in production cost, the prepared environment-friendly packaging bag has good damping and buffering effects, so that the defect that a packaged article is damaged due to extrusion among express packaging bags in an express transportation process can be effectively reduced, and recycling and reusing are achieved due to the fact that the bag is made of paper material.

Description

technical field [0001] The invention relates to the technical field of packaging bags, in particular to an environmentally friendly packaging bag and a preparation method thereof. Background technique [0002] With the development of the economy and the progress of the society, the packaging bags used for packaging items are increasingly playing an important role in people's daily life, which brings great convenience to packaging and transporting items. [0003] When the packaging bag is used to pack fragile and easily damaged items or when the packaged objects need to be transported over long distances, buffering treatment is often required to protect the items inside. At present, packaging bags with cushioning effects are increasingly widely used, for example, they can be used as express packaging bags. Express packaging bags refer to the bags used for packaging documents, documents, materials, goods, etc. in the express industry, also known as express bags, Mailing bags,...

AI Technical Summary

Problems solved by technology

Most of the existing express packaging bags are made of plastic materials, which do not have the effect of shock absorption and buffering, and are easy to damage the packaged items, and can only be used once, and cannot be recycled or recycled or the recycling cost is high; while express delivery bags made of paper materials Packing bags, when mailing important documents or valuables, in order to protect the documents or items from being damaged during transportation, people usually need to put the documents or items into the inner plastic bag or the shock-absorbing bubble bag first, and then put them into the courier In the packaging bag, after sealing the express packaging bag, put the entire express packaging bag into the outer packaging bag, paste the express delivery list on the outer packaging bag and send it out

[0004] In the above method, although the inner plastic bag, the shock-absorbing bubble bag and the outer packaging bag are added, the file has a better shock absorption, cushioning, and waterproof effect, but due to the inner plastic bag, the shock-absorbing bubble bag and the outer packaging bag It is usually made of plastic material, which is non-degradable and pollutes the environment. At the same time, it also increases the huge mailing cost; in addition, the existing preparation process is relatively simple, and the manufactured packaging bags cannot meet high-demand applications.

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