Multi-layer protective inflatable packaging bag with self-adhesive film

Abstract

The invention provides a multi-layer protective inflatable packaging bag with a self-adhesive film. The multi-layer protective inflatable packaging bag with the self-adhesive film which is characterized in that an upper-layer bag body is formed by a first-layer film, a third-layer film, a fifth-layer film and a seventh-layer film; a lower-layer bag body is formed by a second-layer film, a fourth-layer film, a sixth-layer film and an eighth-layer film; the first-layer film to the eighth-layer film are fixedly connected through a first heat sealing line and a second heat sealing line which are located on two sides of the bag body in a heat sealing mode; and a tight cavity used for placing a transported object is formed by the first-layer film and the second-layer film, a first inflation cavity is formed by the first-layer film to the fourth-layer film, and a second inflation cavity is formed by the fifth-layer film to the eighth-layer film. Through double-layer protection of the two inflation cavities, the occurrence of the phenomenon that in the object conveying process, one inflation cavity is damaged, air leaks, and the conveyed object loses protection can be prevented. The third-layer film to the fifth-layer film are pressure stimulation response self-adhesive films, have good adhesive strength, durability and low peel strength, ensure rapid and low-void-ratio bonding, and donot need to use external bonding technologies such as back glues or heat sealing.

Description

technical field [0001] The invention belongs to the technical field of air packaging bags, and in particular relates to a multi-layer protective air packaging bag with a self-adhesive film. Background technique [0002] Air column bags, also known as buffer air column bags, inflatable bags, bubble column bags, and columnar inflatable bags, are new packaging materials filled with natural air in the 21st century. It is made by laminating or co-extruding LLDPE and NYLON. It has anti-stretch and balanced properties, strong flexibility, can be shaped with objects, and has strong protection ability. It is an ideal packaging filler and liner. [0003] In the prior art, Chinese patent 201320363496.X discloses an inflatable bag for protecting fragile items; The inflatable bags in the prior art are all an inflatable cavity. Although the buffer inflatable bag disclosed in Chinese patent 201520086434.8 has an outer protective layer to protect the upper film of the bag body and the oute...

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Problems solved by technology

[0003] In the prior art, Chinese patent 201320363496.X discloses an inflatable bag for protecting fragile items; The inflatable bags in the prior art are all an inflatable cavity. Although the buffer inflatable bag disclosed in Chinese patent 201520086434.8 has an outer protective layer to protect the upper film of the bag body and the outer side of the lower film of the bag body, it is only an inflatable cavity. After deflation, it loses the effect of continuing to protect objects; although the inflatable bag disclosed in Chinese patent 201821709803.4 has a layer of gas storage layer outside the gas storage chamber, and an anti-scratch layer is arranged outside the gas storage layer, the gas storage layer is only very thin. One layer of air-filled layer only plays a very small role in protecting the gas storage chamber, and it is also anti-scratch. The entire technical solution cannot strengthen the double buffer protection of the transported objects, nor can it prevent the internal objects from being damaged. Scratch damage of gas storage cavity

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