CN100582536C - Air stop valve and air sealing body with same - Google Patents

Abstract

The invention provides an air valve and an air sealing body with the same, wherein the air valve comprises: two inner films which are overlapped up and down, at least one air inlet, at least one air channel and at least one cutting hole; the air inlet is formed at the position where the periphery of one side of the two internal films is not completely bonded; the peripheries of the other three edges of the inner membrane are all bonded; one end of the gas channel is connected with the gas inlet and is formed between the two inner membranes; the cutting holes are arranged on the inner membrane at the side of the gas channel. The air sealing body of the invention comprises two outer films which are overlapped up and down and at least one sealing air chamber formed by the outer films, wherein the air stop valve is arranged on the air chamber. The invention can prevent the gas in the gas chamber from leaking after being inflated, thereby realizing good gas locking effect; and each air chamber can be inflated simultaneously; the air sealing body with the air stop valve has the advantages of simple structure and convenience in manufacturing, reduces production operation flows and reduces manufacturing cost.

Description

Gas stop valve and air sealing body with the gas stop valve

technical field

The invention relates to a gas stop valve and an air sealing body with the gas stop valve, in particular to a hole-cut type gas stop valve and an air seal body with the hole-cut type gas stop valve.

Background technique

In the prior art, the method used to cushion the packaged items is to protrude a plurality of small airbags on a plastic sheet, and wrap the plastic film on the outer periphery of the article to achieve shock absorption and buffering effect, but the shock absorption capacity of the small airbags is limited. For larger vibration or impact loads, the effect of cushioning and shock absorption cannot be achieved, so there is a gas packaging bag made of resin film.

Please refer to Fig. 1A to Fig. 1C, gas packing bag A10 is provided with air inlet A11, is connected with air inlet A11 and is provided with air inlet passage A12, and a plurality of air chambers A13 are connected respectively on both sides of air inlet passage A12, each air chamber A13 Both are equipped with an air valve A14 composed of an upper air valve film A141 and a lower air valve film A142. When the external air from the air inlet A11 is inflated into the air chamber A13 through the air inlet A12, the gas packaging bag A10 can be inflated. As a buffer material, for example: U.S. No. 4850912 patent "contains fluid sealed container (for sealingly containing a fluid)", U.S. No. 5261466 patent "process for continuously filling fluid into a plurality of sealed bags a plurality of closed bags), U.S. Patent No. 5,427,830 "Continuous, inflatable plastic wrapping material (Continuous, inflatable plastic wrapping material)" and Japanese Patent No. 5-95851 "Sealed bag for fluid". However, the gas packaging bag A10 needs to be equipped with multiple air valves A14 to inflate multiple air chambers A13, and the installation of multiple air valves A14 will greatly increase the production process and manufacturing cost. Furthermore, the above structure will cause the air chamber A13 close to the air inlet A11 to be inflated first, and the air chamber A13 far away from the air inlet A11 will be inflated slowly or the inflation effect is not good, resulting in poor cushioning effect of the inflated gas packaging bag A10 good.

It can be seen that how to improve the structure of the gas packaging bag and its gas valve, thereby reducing the production process and reducing the manufacturing cost, is a problem that those skilled in the art are eager to solve.

Contents of the invention

In order to overcome the disadvantages of the prior art, the first object of the present invention is to provide a gas stop valve with cut holes.

Another object of the present invention is to provide an air-tight body with a hole-cut type air stop valve.

In order to achieve the above object, the present invention provides a gas stop valve, which is used to be installed on an air-tight body. Holes; the air inlet is formed at the part where one side of the two inner membranes is not completely bonded; the remaining three edges of the inner membrane are bonded; one end of the gas channel is connected to the air inlet and formed on the two inner membranes Between the intima; the incision is made in the intima on the side of the gas channel.

The two sides of the gas channel are two symmetrical heat-sealing curves that seal the two inner films. The gas channel is composed of the upper wide part and the lower narrow part; heat-resistant materials are coated in the two inner films , which starts at the gas inlet and is located in the wide part of the gas channel; the cut hole is formed on one inner membrane and is located on one or both sides of the gas channel; or the cut hole penetrates two inner membranes and is located at the same time One or both sides of the gas channel.

The cut hole is a slit or hole with a length of 0.5 cm, and the cut hole is formed on one side or both sides of the narrow part of the gas channel.

The gas channel is also provided with at least one branch air channel formed by heat-sealed lines for connecting the gas channel and the cut hole.

The two inner films and the heat-resistant material therein extend upward for a short length at the same time.

The two inner films simultaneously extend upwards for a certain length, and the upper edges of the extended parts are completely bonded; the heat-resistant material also extends upwards for a short length, which is shorter than the extended length of the inner films.

The shape of the heat-resistant material is long, oval or T-shaped with a wide top and a narrow bottom.

The present invention also provides an air-sealed body with an air-stop valve, which is used for packaging articles, the air-sealed body includes two outer films stacked up and down, and at least one sealed air chamber formed by the outer films; A gas stop valve is installed on the air chamber; each gas stop valve includes: two inner films stacked up and down, at least one gas inlet, at least one gas channel, and at least a cut hole; The above-mentioned air inlet is formed at the part where the periphery of one side is not completely bonded; the periphery of the remaining three sides of the inner membrane is all bonded; one end of the gas channel is connected with the air inlet and formed between two inner membranes; the cut hole is set On the inner membrane at the sides of the gas channels.

The two sides of the gas channel are two symmetrical heat-sealing curves that seal the two inner films. The gas channel is composed of the upper wide part and the lower narrow part; heat-resistant materials are coated in the two inner films , which starts at the gas inlet and is located in the wide part of the gas channel; the cut hole is formed on one inner membrane and is located on one or both sides of the gas channel; or the cut hole penetrates two inner membranes and is located at the same time One or both sides of the gas channel.

The cut hole is a slit or hole with a length of 0.5 cm, and the cut hole is formed on one side or both sides of the narrow part of the gas channel.

The gas channel is also provided with at least one branch air channel formed by heat-sealed lines for connecting the gas channel and the cut hole.

The two inner films and the heat-resistant material therein extend upward for a short length at the same time.

The two inner films simultaneously extend upwards for a certain length, and the upper edges of the extended parts are completely bonded; the heat-resistant material also extends upwards for a short length, which is shorter than the extended length of the inner films.

The shape of the heat-resistant material is long, oval or T-shaped with a wide top and a narrow bottom.

The air-tight body has only one air chamber, the air-stop valve is installed between the two outer films of the air-tight body, and the end of the air-stop valve with the air inlet is partially exposed outside the air-tight body.

The air-tight body includes a plurality of air chambers, each of which is separated by a heat-sealing line, and each air chamber forms two spaces that are not connected in size: a large space below and a small space above that forms an inflatable channel; the air stop valve The two inner membranes and the heat-resistant material inside extend upward for a short length at the same time, the part extending from the inner membrane and the heat-resistant material is located in the inflation channel, and the rest of the air stop valve is located in the large space below; by The air inlet formed by the heat-resistant material is located in the inflatable channel; the inflatable channels in the air chamber communicate with each other through an air channel, and an inflatable port is arranged on the air channel.

The air-tight body includes a plurality of air chambers, each air chamber is separated by a heat-sealing line, and two spaces of different sizes are formed in each air chamber: a small space above and a large space below; The two inner membranes extend upwards for a certain length at the same time, and the upper periphery of the extended part is completely bonded; the heat-resistant material also extends upwards, but the length of the inner membrane is shorter; the inner membrane of the air stop valve and the heat-resistant material are extended. Part is located in a small space, and the rest is located in a large space; the upper periphery extending from the inner film is completely bonded to the upper periphery of the air-tight body, and the extended part of the inner film forms an inflatable channel, and the air inlet formed by a heat-resistant material Located in the inflatable channel; each inflatable channel communicates with each other through an air channel, and an inflatable port is arranged on the air channel.

The air sealing body includes a plurality of air chambers, each of which is separated by a heat-sealing line; the two inner membranes of the air stop valve extend upward for a certain length at the same time, and the upper edge of the extension part is completely bonded; The thermal material also extends upwards, but is shorter than the extension length of the inner membrane; the upper periphery of the inner membrane extension is completely bonded in the upper periphery of the two outer membranes of the air-tight body; the inner membrane extension forms an air-filled channel; each The inflation passages of the air stop valve communicate with each other through an air passage, and an inflation opening is arranged on the air passage.

The air-tight body includes a plurality of air chambers, each air chamber is separated by a heat-sealing line, and each air chamber of the air-tight body includes two upper and lower large air chambers and a small air chamber in the middle, and an inflatable channel is formed in the small air chamber; The air chamber is equipped with two upper and lower air stop valves, and the two inner films of each air stop valve and the heat-resistant material inside extend upward for a short length; the two air stop valves are respectively installed between the upper air chamber and the inflation channel between the lower air chamber and the air-inflating channel; and the inner film of the upper and lower air-stop valves and the extended part of the heat-resistant material are located in the air-inflating channel, and the rest of the air-stop valve are respectively located in the two upper and lower air chambers; each The two inflatable channels communicate with each other through an air channel, and an inflatable port is arranged on the air channel; a cutting line is drawn outside the inflatable channel.

In the present invention, when the air chamber is inflated and inflated, because the air pressure inside the air chamber is greater than the external atmospheric pressure, the internal gas presses the cut hole, and then presses the two inner membranes so that they are bent and pressed tightly against the outer membrane. On the membrane, or the two inner membranes are only bent under pressure and not pressed against the outer membrane, thus, the gas channel is closed, so that the gas in the air chamber does not leak out to achieve the effect of air lock. In addition, the width of the upper part of the gas channel of the present invention is greater than the width of the lower part, and the gas pressure inside the gas channel is greater than the gas pressure on both sides of the channel, so that the external gas easily enters the gas inlet and is not easy to escape. When the internal pressure of the gas chamber increases , Compress the two heat seal curves of the gas channel to achieve the effect of air lock. In addition, when inflating, the air pressure in each gas channel will reach the same level, and the air chamber close to the inflation port will not be inflated first, and the air chamber far away from the inflation port will not be inflated or cannot be inflated. The structure can make each air chamber inflated at the same time, which greatly improves the working efficiency when inflated. The air sealing body with the air stop valve of the present invention has a simple structure and is convenient to manufacture, thereby reducing the production operation process and reducing the manufacturing cost.

Description of drawings

Fig. 1A is a schematic diagram of a prior art gas packaging bag before inflation;

Figure 1B is a cross-sectional view of a gas packaging bag of the prior art after inflation;

Fig. 1C is another schematic view of the gas packaging bag in the prior art before inflation;

FIG. 2 is a schematic diagram of the appearance of the air stop valve in Embodiment 1 of the present invention;

Fig. 3 is the plane view of the air sealing body with air stop valve before inflating in embodiment 1;

4A and 4B are cross-sectional views of the air-tight body in FIG. 3 after inflating;

Fig. 5 is the plane view of the air sealing body with the air stop valve in Embodiment 2 of the present invention before inflation;

Fig. 6 is a plan view of the stop valve of Embodiment 3 of the present invention before inflation;

Fig. 7 is the plane view of the air sealing body with the air stop valve of Embodiment 4 of the present invention before inflating;

8A and 8B are cross-sectional views of the air-tight body shown in FIG. 7 after being inflated;

Fig. 9 is a plan view of the air sealing body with the air stop valve in Embodiment 5 of the present invention before inflation;

Fig. 10 is a plan view of an air sealing body with a stop valve according to Embodiment 6 of the present invention before inflation;

11A and 11B are cross-sectional views of the air-tight body shown in FIG. 10 after being inflated;

Fig. 12 is a plan view of the air sealing body with the air stop valve according to Embodiment 7 of the present invention before inflation;

13A and 13B are cross-sectional views of the air-tight body shown in FIG. 12 after being inflated;

Fig. 14 is a schematic diagram of an air-tight body with a stop valve according to Embodiment 8 of the present invention before inflating.

Detailed ways

Example 1:

FIG. 2, FIG. 3, FIG. 4A and FIG. 4B show Embodiment 1 of the present invention. The stop valve of the present invention shown in FIG. 2 includes: two inner membranes 1a and 1b, a heat-resistant material 1c, an air inlet 2e, a gas channel 5, and a cut hole 8.

The two inner membranes 1a and 1b are stacked up and down, and heat-resistant material 1c is coated inside. The heat-resistant material 1c starts from the top of the inner membrane and extends downward for a certain length. Glue or ink, so that the heat-resistant material 1c is bonded on the two inner films 1a or 1b by heat sealing. The shape of the heat-resistant material is elongated, oval or T-shaped with a wide top and a narrow bottom.

The peripheries of the four sides of the inner film 1a and 1b are bonded in a heat-sealing manner to form heat-sealing lines 3a, 3b, 3c, and 3d, wherein the heat-sealing lines 3a, 3b, and 3c are completely closed heat-sealing lines, and the heat-sealing line 3d The upper edges of the two inner membranes are not completely bonded. Due to the existence of the heat-resistant material 1c, an air inlet 2e is formed at the upper end of the inner membrane. That is to say, at the peripheries of the upper sides of the two inner membranes, the place where the heat-resistant material 1c is present is not bonded, and the place where there is no heat-resistant material 1c is bonded. During the inflation operation, the heat-resistant material 1c can be used as an air nozzle for the gas to enter.

As shown in Figure 2, the gas channel 5 can be used as a channel for external air circulation, and it is formed between two inner membranes 1a and 1b. The upper end of the gas channel is connected to the gas inlet 2e, and the two sides are sealed by two inner membranes. The heat-sealing line constitutes, for example, two symmetrical curves on both sides of the gas channel, whereby the gas channel is formed by an upper wide part and a lower narrow part, and the heat-resistant material is located in the wide part.

The cut hole 8 can be formed on one inner film and located on one side or both sides of the gas channel; the cut hole 8 can also penetrate two inner films at the same time and be located on one side or both sides of the gas channel. The cut hole 8 may be a seam formed by tearing the intima, or a perforation formed by piercing the intima with a sharp object. The length of the cut hole 8 is preferably 0.5 cm. The position of the cut hole 8 is preferably on one side or both sides of the narrow portion of the gas passage.

As shown in Fig. 3, the air-tight body 30 of the present embodiment is used for packaging articles, and it includes two outer films 2a and 2b stacked up and down that are heat-sealed and bonded at the periphery, and formed inside the two outer films. The gas chamber 40. The above-mentioned air-stop valve is installed between the two outer membranes of the air-tight body 30 , and one end of the air-stop valve with the air inlet 2 e is partially exposed outside the air-tight body 30 .

When inflating air into the air chamber 40, as shown in Figure 4A, the two inner membranes 1a and 1b of the air stop valve are pulled apart, thereby opening the air inlet 2e of the air stop valve, allowing external air to enter through the air inlet 2e Gas channel 5. A part of the external air flows to the left side of the gas passage 5, flows into the air chamber 40 through the cut hole 8 on the left side, and another part of the external air flows to the right side of the gas passage 5, passes through the cut hole on the right side 8 flows into the air chamber 40, thereby inflating the air chamber 40.

As shown in Figure 4B, after the air chamber 40 is inflated, because the air pressure inside the air chamber 40 is greater than the external atmospheric pressure, the internal air presses the cut hole 8, and then presses the two inner membranes 1a and 1b to deform under pressure and produce bending And tightly pressed on the outer membrane 2a or 2b, or the two inner membranes are only bent under pressure and not pressed on the outer membrane 2a or 2b. As a result, the gas channel 5 is closed so that the gas in the gas chamber 40 does not leak out to achieve the effect of locking the gas.

In this embodiment, because the width of the upper part of the gas channel 5, that is, the width connected to the gas inlet 2e, is greater than the width of the lower part, the gas pressure inside the gas channel 5 is greater than the gas pressure on both sides of the channel, so that external air can easily enter the gas inlet. 2e is not easy to escape, when the internal pressure of the gas chamber 40 increases, the two heat-seal curves of the gas channel 5 are compressed to achieve the effect of gas locking.

In addition, the gas channel 5 is not limited to the shape shown in FIG. 2 , and may also be multi-point, double-arc or straight.

Example 2:

As shown in Figure 5, the difference between the gas stop valve of Embodiment 2 and Embodiment 1 (see Figure 2) is that the gas channel 5 of Embodiment 2 is longer and includes a plurality of bronchi 6, and the cut hole 8 is located at the end of the bronchus, so the bronchus 6 is used to connect the gas channel 5 and the cut hole 8 . The bronchi are formed by bonding the two inner membranes by heat sealing.

When inflated, the two inner membranes 1a and 1b of the stop valve are pulled apart, thereby opening the air inlet 2e, allowing external air to enter the gas channel 5 through the air inlet 2e, and along the gas channel 5, and its respective The air passages 6 and the cut holes 8 flow into the air chamber 40 of the air-tight body to inflate the air chamber 40 .

Example 3:

As shown in Figure 6, the difference between this embodiment 3 and the above-mentioned embodiment 1 is that the gas stop valve of this embodiment 3 includes a plurality of gas passages 5 uniformly arranged in the transverse direction, and the upper end of each gas passage 5 is connected to The gas inlets 2e are connected, and a plurality of cut holes 8 are arranged on the side of each gas channel 5 .

The heat-sealing line 3d does not completely bond the peripheral edges of the two inner membranes, and the place with the heat-resistant material 1c is not bonded, and the place without the heat-resistant material 1c is bonded.

Example 4:

As shown in Figure 7, Figure 8A, and Figure 8B, the air-tight body of this embodiment is composed of two outer membranes 2a and 2b stacked up and down, and a plurality of air chambers 40 formed in the outer membranes. Bonded by heat sealing, the 40 air chambers are separated by heat sealing lines. Each air chamber 40 is formed with two spaces of different sizes: a large space A below and a small space B above which forms the inflatable channel 3 . An air stop valve is arranged between the inflatable channel 3 and the large space A.

As shown in Fig. 8A, the air stop valve of this embodiment is based on the air stop valve of embodiment 1, and the two inner membranes 1a and 1b, and the heat-resistant material 1c are extended upward for a short length at the same time. The part extending from the inner film and the heat-resistant material is located in the air-filling channel 3 of the air-tight body, and the rest of the air-stop valve is located in the large space A. An air inlet 2e formed of a heat-resistant material 1c is located in the air-filling passage 3 . The inflation passages 3 communicate with each other through an air passage, and an inflation port 31 is provided on the air passage, as shown in FIG. 7 .

When inflating, external air enters the inflation port 31, causing each inflation channel 3 to expand, and the inner membranes 1a and 1b are pulled apart, thereby opening each air inlet 2e, allowing external air to enter each gas channel 5 through each air inlet 2e , after that, a part of the external air flows to the left side of the gas passage 5, flows into the air chamber 40 through the cut hole 8 on the left side, and another part of the external air flows to the right side of the gas passage 5, passes through the right side The cut holes 8 flow into the air chambers 40, thereby causing each air chamber 40 to be inflated.

As shown in Figure 4B, after the large space A is inflated, the internal air pressure is greater than the external atmospheric pressure, so the two inner membranes 1a and 1b are bent and pressed tightly against the outer membrane 2a or 2b, or the inner membrane 1a and 1b The membrane is only bent and does not press against the outer membrane 2a or 2b. As a result, each gas channel 5 and each large space A are closed, so that the gas in each large space A will not leak out to achieve the effect of air lock.

Because the air pressure in each gas channel 5 will reach the same level, so when inflating, the air chamber close to the inflation port 31 will not be inflated first, and the gas chamber far away from the inflation port 31 will not be well inflated or cannot be inflated. Therefore, the above-mentioned structure of the present invention can inflate each air chamber at the same time, increasing the inflation speed.

Example 5:

As shown in Figure 9, it is Embodiment 5 of the present invention, and its difference from the above-mentioned Embodiment 4 is: the gas passage 5 on the air stop valve of Embodiment 5 is longer and includes a plurality of bronchi 6, and the hole is cut 8 is located at the end of each airway, and the airway 6 is used to connect the gas channel 5 and the cut hole 8 .

When inflating, the external air entering the inflation port 31 first expands the inflation channel 3, and the two inner membranes 1a and 1b are pulled apart, thereby opening each air inlet 2e, allowing external air to enter each gas channel through the air inlet 2e 5, and flow along each gas channel 5 to each bronchus 6, and then flow into each air chamber 40 through the cut hole 8 at the end of the bronchus 6, so that each air chamber 40 is inflated. The above-mentioned structure of this embodiment can make each air chamber 40 inflated at the same time, which improves the inflating speed.

Embodiment 6:

As shown in Figure 10, Figure 11A, and Figure 11B, the air-tight body of this embodiment is composed of two outer membranes 2a and 2b stacked up and down, and a plurality of air chambers 40 formed in the outer membrane, and the periphery of the outer membrane is covered. Bonded by heat sealing, 40 air chambers are separated by heat sealing lines. Each air chamber 40 forms two different spaces: a small space B above and a large space A below. A stop valve is provided between the small space B and the large space A.

The gas stop valve of this embodiment is based on the gas stop valve of embodiment 1, after extending the two inner membranes 1a and 1b upward for a certain length at the same time, and then completely heat-sealing and bonding the upper edge of the extended part, and is resistant The thermal material 1c also extends upwards for a short length, but shorter than that of the inner membrane. The above-mentioned extension of the inner membrane and heat-resistant material is located in the small space B, and the rest of the air stop valve is located in the large space A. And the upper edge extended from the inner film is completely bonded in the upper edge of the air-tight body, so that the extended part of the inner film forms an inflatable channel 3, and the air inlet 2e formed by the heat-resistant material 1c is located in the inflatable channel 3 . The inflation passages 3 communicate with each other through an air passage, and an inflation port 31 is provided on the air passage, as shown in FIG. 10 .

As shown in Figure 11A, when inflating, external air enters the inflatable port 31, causing the inflatable channel 3 to expand, and the inner membranes 1a and 1b are pulled apart, thereby opening each air inlet 2e, allowing external air to pass through each air inlet 2e After entering each gas channel 5, a part of the external air flows to the left side of the gas channel 5, flows into the large space A through the cut hole 8 on the left side, and another part of the external air flows to the right side of the gas channel 5. On the right side, it flows into the large space A through the cut hole 8 on the right side, so that all the large spaces A are inflated.

As shown in Figure 11B, after the large space A is inflated, the internal air pressure is greater than the external atmospheric pressure, so the two inner membranes 1a and 1b are bent and pressed tightly against the outer membrane 2a or 2b, or the inner membrane The membrane is only bent and does not press against the outer membrane 2a or 2b. As a result, each gas channel 5 is closed, so that the gas in each space A will not leak out to achieve the effect of air lock.

The above-mentioned structure of the present invention enables each air chamber 40 to be inflated at the same time, thereby increasing the inflating speed.

In addition, as shown in FIG. 9 , the air stop valve of Embodiment 6 can also be formed with at least one branch air channel 6 on the gas channel 5 .

Embodiment 7:

As shown in Figure 12, Figure 13A and Figure 13B, the air-tight body of this embodiment is composed of two outer membranes 2a and 2b stacked up and down, and a plurality of air chambers 40 formed in the outer membrane, and the periphery of the outer membrane is covered. Bonded by heat sealing, 40 air chambers are separated by heat sealing lines.

Each air chamber 40 of this embodiment 7 is equipped with a gas stop valve, and the structure of the gas stop valve is exactly the same as the gas stop valve of embodiment 6. The upper periphery of the extension part of the two inner membranes of the air stop valve in Embodiment 7 is completely bonded in the upper periphery of the two outer membranes of the air-tight body 30 . Thus, the air stop valve is suspended within the air-tight body 30 . The extended parts of the two inner membranes of the air stop valve form the inflation channels 3 , and each inflation channel 3 communicates with each other through an air channel, and an inflatable port 31 is arranged on the air channel.

As shown in Figure 13A, when inflating, the external air entering the inflation port 31 expands the inflation channel 3, and the inner membranes 1a and 1b are pulled apart to open the air inlet 2e, so that the external air enters the gas channel 5 through the air inlet 2e. A part of the external air flows to the left side of the gas passage 5, flows into the air chamber 40 through the cut hole 8 on the left side, and another part of the external air flows to the right side of the gas passage 5, passes through the cut hole 8 on the right side. The holes 8 flow into the air chamber 40, causing the air chamber 40 to inflate.

After the air chamber 40 is inflated and expanded, as shown in Figure 13B, the internal air pressure of the air chamber 40 is greater than the external atmospheric pressure, so the two inner membranes 1a and 1b are closed, thereby closing the gas passage 5 and the inflation passage 3, and closing the air chamber 40 , so that the gas in the gas chamber does not leak out to achieve the effect of locking the gas.

The two sides of the gas channel 5 are made of heat-sealed lines that seal the two inner membranes. For example, the two sides of the gas channel are two symmetrical curves, so that the gas channel is composed of a wide part above and a narrow part below. The air pressure inside the gas passage 5 is greater than the air pressure on both sides, so that the external air can easily enter the air inlet 2e and not easily escape. When the internal pressure of the air chamber 40 increases, it will compress the curved part of the gas passage 5 to achieve Air lock effect. In addition, the gas channel 5 can also be multi-point, double-arc or straight.

In addition, as shown in FIG. 9 , the air stop valve of Embodiment 7 can also be formed with at least one branch air channel 6 on the gas channel 5 .

Embodiment 8:

Fig. 14 shows Embodiment 8 of the present invention. The air-tight body of this embodiment is made up of two outer membranes 2a and 2b stacked up and down, and a plurality of air chambers 40 formed in the outer membrane. The periphery of the outer membrane is bonded by heat sealing, and each air chamber 40 is heat-sealed lines to separate.

Each air chamber includes two upper and lower air chambers and a small air chamber (not shown in the figure) in the middle. The air-filling channel 3 is formed in the small air chamber, similar to that shown in Figure 8A. Between the channels 3, and between the lower air chamber and the inflatable channel 3. Each inflatable channel 3 communicates with each other through an air channel, and an inflatable port 31 is arranged on the air channel.

When inflating, the gas in the inflation channel 3 is filled simultaneously. Into the upper and lower air chambers to shorten the inflation time.

In addition, a cutting line 9 can be drawn in advance on the outside of the inflatable channel 3. After the inflation is completed, cutting can be carried out along the cutting line 9, so that the air chambers at the upper and lower ends of the inflatable channel 3 are separated, and the output of the air chamber is doubled. . Alternatively, after inflating, a plurality of coherent small holes are poked along the cutting line 9 , which is convenient for the user to tear apart along the cutting line 9 so that each air chamber 40 can be used independently. And by setting the cutting line 9, it is possible to mass-produce air-tight bodies that can be used independently.

In addition, as shown in FIG. 9 , the air stop valve of Embodiment 8 may also have at least one airway 6 formed on the gas passage 5 .

Although the technical content of the present invention has been disclosed above in the form of preferred embodiments, it is not intended to limit the present invention. Any changes made by those skilled in the art without departing from the spirit of the present invention are covered by the scope of the present invention Inside.

Claims (19)

1. An air stop valve for being installed on an air-tight body (30), characterized in that the air stop valve comprises: two inner membranes (1a and 1b) stacked up and down, at least one air inlet (2e) ), at least one gas channel (5), at least cut holes (8); The above-mentioned air inlet (2e) is formed at the place where the periphery of one side of the two inner films (1a and 1b) is not completely bonded; the remaining three edges of the inner film are bonded; one end of the gas channel (5) It is connected with the air inlet (2e) and formed between two inner membranes; the cut hole (8) is arranged on the inner membrane at the side of the gas channel (5). 2. The gas stop valve according to claim 1, characterized in that, the two sides of the gas channel (5) are two symmetrical heat-sealing curves that seal the two inner membranes, and the gas channel (5) is formed by the upper Composed of a wide part and a lower narrow part; a heat-resistant material (1c) is coated in the two inner films, which starts at the gas inlet (2e) and is located in the wide part of the gas channel (5); The cut hole (8) is formed on one inner film and is located on one side or both sides of the gas channel; or the cut hole (8) penetrates two inner films simultaneously and is located on one side or both sides of the gas channel. 3. The gas stop valve according to claim 2, characterized in that the cut hole (8) is a slit or hole with a length of 0.5 cm, and the cut hole is formed on one side or both sides of the narrow part of the gas passage. 4. The gas stop valve according to claim 1, characterized in that at least one branch air channel (6) formed by a heat-sealed line is provided on the gas channel (5) to connect the gas channel and cut holes (8). 5. The air stop valve according to claim 1, characterized in that, the two inner membranes (1a and 1b) and the heat-resistant material (1c) therein extend upward for a short length at the same time. 6. The air stop valve according to claim 2, characterized in that, the two inner membranes (1a and 1b) simultaneously extend upward for a certain length, and the upper edge of the extended part is completely bonded; the heat-resistant The material (1c) also simultaneously extends upwards for a short length, shorter than that of the inner membrane. 7. The air stop valve according to claim 2, 5 or 6, characterized in that, the shape of the heat-resistant material (1c) is elongated, oval or T-shaped with a wide top and a narrow bottom. 8. An air-tight body with an air-stop valve, which is used for packaging articles, and the air-tight body (30) includes two outer films (2a and 2b) stacked up and down, and the outer film formed by the outer film At least one sealed air chamber (40); said air chamber is equipped with a stop valve; it is characterized in that, Each air stop valve includes: two inner membranes (1a and 1b) stacked up and down, at least one gas inlet (2e), at least one gas channel (5), and at least a cut hole (8); At the place where the periphery of one side of the two inner membranes is not fully bonded, the above-mentioned air inlet (2e) is formed; the remaining three edges of the inner membrane are all bonded; one end of the gas channel (5) is connected to the air inlet ( 2e) It is connected and formed between two inner membranes; the cut hole (8) is arranged on the inner membrane at the side of the gas channel. 9. The air-tight body with a stop valve according to claim 8, characterized in that, the two sides of the gas channel (5) are two symmetrical heat-sealing curves that seal the two inner membranes, and the gas channel It consists of an upper wide part and a lower narrow part; a heat-resistant material (1c) is coated in the two inner films, which starts at the gas inlet and is located in the wide part of the gas channel (5); The cut hole (8) is formed on one inner membrane and located on one side or both sides of the gas passage (5); or the cut hole (8) penetrates two inner membranes simultaneously and is located on one side or both sides of the gas passage. 10. The air-tight body with a stop valve according to claim 9, characterized in that the cut hole (8) is a 0.5 cm long slit or hole, and the cut hole is formed at the narrow part of the gas passage. one or both sides. 11. The air-tight body with a gas stop valve according to claim 8, characterized in that, the gas channel (5) is also provided with at least one branch air channel (6) formed by a heat-sealing line, which is used to To connect the gas channel and cut hole (8). 12. The air-tight body with air stop valve according to claim 8, characterized in that, the two inner membranes (1a and 1b) and the heat-resistant material (1c) inside extend upward for a short length at the same time . 13. The air-tight body with a stop valve according to claim 9, characterized in that, the two inner membranes (1a and 1b) simultaneously extend upward for a certain length, and the upper periphery of the extended part is completely glued knot; the heat-resistant material (1c) also extends upwards for a short length, which is shorter than the length of the inner membrane. 14. The air sealing body with air stop valve according to claim 9, 12 or 13, characterized in that, the shape of the heat-resistant material (1c) is long, oval, or wide at the top and narrow at the bottom T-shaped. 15. The air-tight body with air-stop valve according to claim 8 or 11, characterized in that the air-tight body has only one air chamber (40), and the air-tight valve is installed on the air-tight body Between the two outer membranes, one end of the stop valve with the air inlet (2e) is partially exposed outside the air-tight body. 16. The air-tight body with air-stop valve according to claim 8 or 11, characterized in that the air-tight body comprises a plurality of air chambers (40), each air chamber is separated by a heat-sealing line, each Two different spaces are formed in the air chamber: the lower large space (A) and the upper small space (B) forming the inflatable channel (3); The two inner membranes (1a and 1b) of the air stop valve and the heat-resistant material (1c) inside extend upward for a small length at the same time, and the part extending from the inner membrane and the heat-resistant material is located in the inflation channel (3 ), the rest of the air stop valve is located in the large space (A) below; the air inlet (2e) formed by heat-resistant material (1c) is located in the inflatable channel; each inflatable channel of the air chamber communicates with each other through an air channel, and the air The road is provided with an air charging port (31). 17. The air-tight body with air-stop valve according to claim 8 or 11, characterized in that the air-tight body comprises a plurality of air chambers (40), each air chamber is separated by a heat-sealing line, each Two different spaces are formed in the air chamber: the upper small space (B) and the lower large space (A); The two inner membranes (1a and 1b) of the gas stop valve extend upwards for a certain length at the same time, and the upper periphery of the extended part is completely bonded; the heat-resistant material (1c) also extends upwards, but is shorter than the length of the inner membrane ;The inner film of the air stop valve and the above-mentioned extended part of the heat-resistant material are located in the small space (B), and the rest are located in the large space (A); the upper edge of the inner film is completely bonded to the upper side of the air-tight body In the periphery, the extension part of the inner membrane forms an air-inflating channel (3), and the air inlet (2e) formed by heat-resistant material (1c) is located in the air-inflating channel; each inflating channel communicates with each other through an air channel, and an air-inflating port is provided on the air channel (31). 18. The air-tight body with air-stop valve according to claim 8 or 11, characterized in that the air-tight body comprises a plurality of air chambers (40), and each air chamber is separated by a heat-sealing line; The two inner membranes (1a and 1b) of the air stop valve extend upward for a certain length at the same time, and the upper periphery of the extended part is completely bonded; the heat-resistant material (1c) also extends upward, but is shorter than the length of the inner membrane; The upper edge of the extended part of the inner film is completely bonded in the upper edge of the two outer films (2a and 2b) of the air-tight body; the extended part of the inner film forms an inflatable channel (3); the inflatable channel of each air stop valve passes through An airway communicates with each other, and an air filling port (31) is arranged on the airway. 19. The air-tight body with air-stop valve according to claim 8 or 11, characterized in that the air-tight body includes a plurality of air chambers (40), each air chamber is separated by a heat-sealing line, and the air-tight Each air chamber of the body includes two upper and lower air chambers and a small air chamber in the middle, and an air-filling channel (3) is formed in the small air chamber; Each air chamber is equipped with upper and lower two air stop valves, and the two inner membranes (1a and 1b) of each air stop valve and the heat-resistant material (1c) therein extend upward for a short length at the same time; Two air stop valves are respectively installed between the upper air chamber and the inflatable passage, and between the lower air chamber and the inflatable passage (3); In the channel (3), the remaining parts of the air stop valve are respectively located in the two upper and lower air chambers; Each inflatable passage (3) communicates with each other through an air passage, and an air inflation port (31) is provided on the air passage; A cutting line (9) is drawn outside the inflation channel (3).

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