A self-closing buffer packaging bag

Abstract

The invention relates to a cushioning packaging bag for preventing articles from being broken, in particular to a self-closing cushioning packaging bag which automatically closes an air intake channel after inflation and can well prevent gas leakage. The present invention adopts the following technical solutions: a self-closing cushioning packaging bag, characterized in that: a strip of heat-resistant ink is coated between the two layers of inner film and near its upper end along its length direction. One layer of outer film and two layers of inner film are provided with a first heat-sealing line at the heat-resistant ink strip and its lower position. The first heat-sealing line is continuous wave-shaped, and the upper bow of the first heat-sealing line is located At the corresponding position of the ink bar, the lower concave part of the first heat-sealing line is located at the position below the heat-resistant ink bar. By adopting the above-mentioned solution, the present invention overcomes the shortcomings of the prior art and provides a reasonable structure, good self-closing property, processing A new type of self-closing cushioning bag with low difficulty.

Description

technical field [0001] The invention relates to a cushioning packaging bag for preventing articles from being broken, in particular to a self-closing cushioning packaging bag which automatically closes an air intake channel after inflation and can well prevent gas leakage. Background technique [0002] The space filling of traditional packaging boxes is generally made of foam, which is packed into the box according to the shape of the item, especially when fragile items are packed into the box, this foam cushion fills the remaining space of the packaging box, such space filling The volume of the object is larger than the volume of the protected article, and the treatment of the foam cushion after use also brings inconvenience to environmental protection, especially the transportation and storage of the foam is very troublesome, which greatly increases the transportation and storage costs of the enterprise. [0003] At present, most of the methods used for cushioning packaged...

AI Technical Summary

Problems solved by technology

[0002]The space filling of the traditional packaging box is generally made of foam, which is packed into the box according to the shape of the item, especially when fragile items are packed into the box, this The foam cushion fills the remaining space of the packing box. The volume of such a space filler is larger than the volume of the protected item, and the disposal of the foam cushion after use also brings inconvenience to environmental protection, especially the transportation and storage of the foam. Very troublesome, greatly increasing the cost of transportation and storage of enterprises

[0003] At present, most of the methods used for cushioning packaging items are: a plurality of raised small airbags are protruded on the plastic sheet, and this plastic film is wrapped around the outer periphery of the item to It achieves the effect of shock absorption and buffering, but the shock absorption capacity of the small airbag is limited, and it cannot achieve the effect of buffering and shock absorption for larger vibrations or impact loads

[0004] The patent No. "200610067311.5" of "Air Buffer with Sealing Body Air Locking Device and Its Manufacturing Method" has similarities with the technology of this application document, but there are also some deficiencies, which are specifically manifested in: It is necessary to coat heat-resistant sections at equal distances, which greatly increases the difficulty and efficiency of processing

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