Air sealing body with air inlets capable of being opened quickly

Abstract

The invention discloses an air sealing body with air inlets capable of being opened quickly. The air sealing body comprises two outer films and two narrow inner films, wherein the two outer films and the two inner films are connected together in a heat-seal mode, and an inflation channel and a plurality of air columns are formed through a first heat-seal line. The two inner films extend to the two opposite inner sides and the upper edges of the two outer films respectively along the first heat-seal line, and the top edges of the two inner films and the upper edges of the two outer films are integrally connected in a heat-seal mode. The inner surface of at least one inner film is provided with a plurality of air guide portions. The air guide portions are arranged corresponding to the air columns and coated with heat-resisting materials. Each inner film is provided with a plurality of air guide holes which are formed between the air guide portions and the upper edge of the inner film. When inflation is conducted through the inflation channel, air enters the air guide holes, the air guide portions and the corresponding inner films form a flow guide channel, the air is quickly injected into the air columns to fill up the air columns, and internal pressure is generated to press the two inner films, so that the air is prevented from leaking outside. As a result, the air sealing body with the air inlets capable of being opened quickly can conduct inflation quickly, effectively simplify the manufacturing and connection process of the inner films and the outer films, and lower the manufacturing cost.

Description

technical field [0001] The invention relates to a sealing structure, in particular to an air-tight structure for providing cushioning and anti-shock effects on packages, and enabling quick opening of an air inlet and effective mass production. Background technique [0002] In traditional packaging materials, a soft inner cushion (such as foam) is added around the package to protect the package, which can prevent the contents from being damaged or broken due to external vibration. However, the soft inner pad needs to be separately processed and sewn on the packaging material to prevent it from moving or falling off the packaging material. However, the processing process is not only cumbersome, but the preparation of the soft inner pad greatly increases the manufacturing cost of the packaging material. [0003] In view of the aforementioned shortcomings, an inflatable structure is developed as a structure for buffering external forces. It is filled with air to form an air colu...

AI Technical Summary

Problems solved by technology

However, the soft inner pad needs to be separately processed and sewn on the packaging material to prevent it from moving or falling off the packaging material. However, the processing process is not only cumbersome, but the preparation of the soft inner pad greatly increases the manufacturing cost of the packaging material

[0003] In view of the aforementioned shortcomings, an inflatable structure is developed as a structure for buffering external forces. It is filled with air to form an air column, which can effectively protect objects and avoid shaking. The air seal that quickly opens the air inlet is known as the invention patent of the Republic of China No. Patent No. 587049, wherein the air-tight body has two bags of sheets and two valve sheets, which are arranged in the two bags of sheets and then formed, and a passage for a switch valve and an air introduction channel are formed inside. After inflation, the airtight The body expands to block the passage, but this switch valve only describes how to block the air in the sealing body from leaking out, but when the air introduction channel is filled with gas and expands, even if the two bags of sheets are pushed by the gas and pulled apart , the switch valve will not expand outwards with the action of the second bag sheet, so the two valve sheets of the switch valve are still attached together and the air passage inlet cannot be opened, and the air cannot automatically enter the sealing body; in addition, the The inner two-valve sheet needs to be separately installed on the outer sheet, which increases the manufacturing process, and because the two outer bag sheets and the inner two-valve sheet cannot be produced at the same time, it seriously hinders the mass production efficiency of the inflatable structure and virtually increases the manufacturing process. cost

Also, U.S. Patent No. US7568508 suggests that the two outer membranes are sandwiched by the second inner membrane, and that the second inner membrane is provided with multiple heat-resistant materials at predetermined points and given heat-sealing points and heat-sealing lines to form an inflatable channel. After inflation, the two inner membranes will be separated from each other. Separate and match the corresponding outer membranes, the expansion surface pulls the air inlet, so that the air flows into the air inlet and enters the air column. The shortcoming of this patent is that the second inner membrane must be lower than the second outer membrane, and if the heat sealing point is offset , when inflated, the second inner membrane will fold back to cover the air inlet and prevent air from entering

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