Improved air packaging device

Abstract

The invention relates to an improved air packaging device. Two layers of thermoplastic films are subjected to secondary thermoplastic packaging to form a stereoscopic packaging body which can be sealed. The improved air packaging device comprises a plurality of independent seal air chambers and a main passage, wherein the main passage is provided with an air inlet; and each seal air chamber is communicated with the main passage by a check valve formed by two layers of films. The improved air packaging device is characterized in that the check valve and the main passage for inflating the check valve are formed by carrying out thermoplastic packaging on the two layers of films and one layer of thermoplastic film of the packaging body into a whole and can be arranged in any position of the seal air chambers. Meanwhile, because the two layers of check valve films are only fixed on any layer of thermoplastic film, and the check valve films are adhered to the thermoplastic film after inflated and do not bear any tension, the tearing risk does not exist, and the safety of the packaging device is greatly improved.

Description

technical field [0001] The invention relates to a three-dimensional air-tight packaging device designed and produced using self-adhesive film rejection (one-way valve) technology. The device can be used in precious and fragile products such as electronic products, glassware, precision instruments, handicrafts, printing consumables, etc., and has safety protection performance. Various fields with relatively high requirements. The invention is a new type of environmentally friendly packaging material with comprehensive protection properties such as extrusion resistance, vibration resistance, sealing and moisture resistance, drop resistance and buffering. Spacer boards and all-round cushioning packaging for items or directly used in the outer packaging for sales by printing. Background technique [0002] The globalization trend of enterprises has increased the transportation distance of products from the place of production to the place of consumption, resulting in the rapid d...

AI Technical Summary

Problems solved by technology

Because this one-way valve is formed by four-layer film heat sealing, and the main channel is formed by two layers of thermoplastic film, therefore, the one-way valve and the main channel can only be arranged on one side end of the airtight chamber 4, and the one-way valve The height h of the required film is usually 100mm. When the U-shaped sleeve is formed by double-folding and sealing, in order to inflate the package normally, the height of the two legs of the U-shaped sleeve should be at least the height of a one-way valve, that is, 100mm. For many objects that are not very large in size, the height of the two legs of the U-shaped sleeve does not need to be 100mm, and at least 20mm can meet the needs. In this way, the problem of excessive packaging will occur virtually, and at the same time, the cost of packaging will be increased. In addition, due to The lower part of the one-way valve is heat-sealed with a thermoplastic film. After inflating, the upper end of the one-way valve is subjected to a large tension, which may be torn from the heat-sealing line, resulting in the risk of air leakage.

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