CN204150431U

CN204150431U - A kind of square air-packing device

Info

Publication number: CN204150431U
Application number: CN201420329171.4U
Authority: CN
Inventors: 张嘉盈
Original assignee: Shanghai Air Paq Packaging Technology Development Co Ltd
Current assignee: Shanghai Air Paq Packaging Technology Development Co Ltd
Priority date: 2014-06-19
Filing date: 2014-06-19
Publication date: 2015-02-11
Anticipated expiration: 2024-06-19

Abstract

A kind of square air-packing device, it comprises at least one inflatable unit and at least one charge valve, described inflatable unit comprises multiple inflation main body, inflate main body described in each and there is a plenum chamber, described charge valve is connected to inflate to described inflation main body with described plenum chamber, described inflation main body forms multiple sidewall after bending and heat-sealing, the adjacent two side of described multiple sidewall roughly at right angles to arranges, thus described multiple sidewall forms a square container cavity, to hold article to be packaged thus to provide air cushioning effect for described article to be packaged.

Description

A kind of square air-packing device

Technical field

The utility model relates to a kind of air-packing goods, in particular to the square air-packing device of one, multiple sidewalls of wherein said air-packing device form general square shape, thus are suitable for being enclosed in around article to be packaged, provide air cushioning effect to give described article to be packaged.

Background technology

Packaging refers to as protecting product, convenient storing, promotion in circulation process, the overall title of the container adopted by certain technical method, material and subsidiary etc.In modern society, due to the stimulation of ecommerce, the development of modern logistics transit industry also achieves proud achievement, but the drawback that traditional manner of packing exists, causes packing articles to lag far behind the developing steps of modern logistics transit industry.

Be the traditional packing chest be made up of fluting board as shown in FIG. 1A and 1B, wherein said packing chest has four end to end sidewall 1a, 1b, 1c, 1d to form container cavity 11P, and described container cavity 11P is used for stores.Extend one collapsible respectively in the upper and lower end parts of every described sidewall 1a, 1b, 1c, 1d, every described collapsible is passed through the folding upper and lower opening for the described container cavity 11P of sealing.

When described packing chest does not use, want to be stored in rugosity, to reduce the space that described packing chest is stored itself as much as possible by described folding; When described packing chest uses, by manually making described container cavity 11P be formed, and folding obtaining every described collapsible face bottom described packing chest, obtaining bottom opening for the described packing chest of sealing; After article put into described container cavity, the every described collapsible face at described packing chest top is folded, obtain open top for the described packing chest of sealing, thus, complete the packing work to article.

Although described packing chest is when for using, compression volume can be carried out by folding mode, but, due to the structure of fluting board and the attribute of described packing chest itself, described packing chest still needs to take more storage space, and the weight of described packing chest is relatively high, these all result in the traffic cost of described packing chest and use cost higher.In addition, described packing chest, in the process launched, needs the artificial of at substantial, and it is longer to launch the time that described packing chest spends, and causes the use cost of described packing chest further to raise.

Along with the development of logistics transportation industry, the transport of increasing product has caused the quantity consumed of described packing chest to roll up, but, because the raw MAT'L of described packing chest is mainly fluting board, so a large amount of consumption of this described packing chest must bring heavy pressure to environment.

The more important thing is, in the process of shipping products, described packing chest can not effectively for product provides enough buffer capacities.In order to address this problem, as shown in Figure 1B, need to strengthen the foam buffer element 12P matched with product, in the process used, need the both sides or the two ends that buffer element 12P described in a pair are arranged on symmetrically product, and then be encapsulated in described container cavity 11P.So for described packing chest, for product provides the mainly described buffer element 12P of buffer action, and described packing chest mainly serves the effect of encapsulation.But, described buffer element 12P does not possess commonality, that is, described buffer element 12P only adapts to a product, after replacement of products, needs again to change different buffer elements, and the volume of described buffer element 12P is larger, and can not be changed, so, make the use cost of described buffer element 12P higher.

Especially various product makes rapid progress, falls over each other gorgeous today of struggling against, traditional described buffer element 12p can not be used to mutually as the alternative packing articles of each product, and this must need a kind of packing articles with good commonality to carry out alternative traditional manner of packing.

In addition, traditional air rubber capsule pack, it is by folding by inflatable body through a series of and seal the packaging bag forming the spatial accommodation formed by multiple sidewall, but, in the folding process of conventional air packaging bag, it can not be approximate right angle shape between some adjacent walls, thus cause whole packaging bag and be not suitable for packing square article to be packaged, because produce larger space between article meeting to be packaged and packaging bag, thus packaging bag can not closely be fitted with article to be packaged, thus have impact on air cushioning effect.

Summary of the invention

Main purpose of the present utility model is to provide a kind of square air-packing device, wherein said air-packing device provides an inflatable bodies and a charge valve, gas is charged by described charge valve and is kept at described inflatable bodies inside, described inflatable bodies forms multiple sidewall and roughly forms square package bag, to be enclosed in around article to be packaged, thus, when being stored in described air-packing device when article to be packaged and being under pressure in either direction, described inflatable bodies can disperse this pressure, and then, article to be packaged are made to be unlikely to be subject to the impact of this pressure.

Another object of the present utility model is to provide a kind of square air-packing device, when article to be packaged are stored in described air-packing device, article to be packaged are equivalent to by the unsettled inside at described air-packing device, thus article to be packaged are not vulnerable to the interference of external environment.

Another object of the present utility model is to provide a kind of square air-packing device, described air-packing device utilizes gas as being filled with thing, so that weight and the use cost of described air-packing device can be reduced, and when the either direction of described air-packing device is under pressure, the gas being positioned at described inflatable bodies inside can disperse this pressure rapidly, thus, enhance the buffer capacity of described air-packing device, article to be packaged can be avoided like this to be squeezed.

Another object of the present utility model is to provide a kind of square air-packing device, by described charge valve in the process of described inflatable bodies insufflation gas, described inflatable bodies roughly can form multiple sidewall along sealing station and a container cavity is used for as article to be packaged provide storage space, thus described air-packing device is easy to use.

Another object of the present utility model is to provide a kind of square air-packing device, and described air-packing device is when not inflated, and the storage space taken is less, compared with traditional packing chest, and the convenient transport of described air-packing device and storage; In addition, described air-packing device allows to carry out charge operation to described inflatable bodies packaging is on-the-spot, with can directly for packing article to be packaged, thus easy to use.

Another object of the present utility model is to provide a kind of square air-packing device, described air-packing device is after being charged gas, described inflatable bodies freely can adjust according to the shape of product, thus, described air-packing device is made to have stronger commonality, and after article to be packaged put into the described container cavity of described inflatable bodies formation, described air-packing device and article to be packaged are in conjunction with compact, and then article to be packaged can not from landing in the described container cavity of described air-packing device.

Another object of the present utility model is to provide a kind of square air-packing device, described air-packing device both can individually as the packing articles of article to be packaged, also other packing articles can be coordinated, as used together with traditional packing chest or packing box.

Another object of the present utility model is to provide a kind of square air-packing device, wherein said air-packing device by one or more unidirectional charge valve to described inflatable bodies insufflation gas, described charge valve terminates in inflation, reaching in described inflatable bodies after preset air pressure can automatic-sealed, thus easy to use.

Another object of the present utility model is to provide a kind of square air-packing device, the filling channel of wherein said air-packing device is sealed by two diaphragm seals, thus form the first resealing effect, then described filling channel is sealed by non-return diaphragm seal, thus form the second resealing effect, leak gas to prevent described airbag.Also with regard to time say, if during gas leakage, gas can be guided and flow to the non-return passage that formed by described non-return diaphragm seal, seals described filling channel further to produce supplementary air pressure, thus the deficiency of diaphragm seal sealing effectiveness described in reinforcement.

In order to achieve the above object, the utility model provides a kind of square air-packing device, it comprises at least one inflatable bodies and at least one charge valve, described inflatable bodies comprises multiple inflation unit, inflation unit described in each has a plenum chamber, described charge valve is connected to inflate to described inflation unit with described plenum chamber, described inflation unit forms multiple sidewall after bending and heat-sealing, the adjacent two side of described multiple sidewall roughly at right angles to arranges, thus described multiple sidewall forms a square container cavity, to hold article to be packaged thus to provide air cushioning effect for described article to be packaged.

Preferably, multiple described inflation unit inflation unit described in each after bending of described inflatable bodies forms multiple sub-inflation unit, the described sub-inflation unit of part is by sealing the involution of seam thus can not inflating, thus formation adjustment part, described adjustment part makes sidewall described in adjacent two of coupled described sub-inflation unit formation at right angles to arrange.

Preferably, multiple described inflation unit inflation unit described in each after bending of described inflatable bodies forms multiple sub-inflation unit, the described sub-inflation unit of part is by being vented the involution of seam to reduce charge air, thus forming the adjustment part being easy to folding and producing deformation, described adjustment part makes sidewall described in adjacent two of coupled described sub-inflation unit formation at right angles to be arranged.

Preferably, described exhaust seam by described adjustment part each described in multiple regional area involutions of sub-inflation unit, thus described multiple regional area can not be inflated.

Preferably, described adjustment part and coupled described sub-inflation unit formed adjacent two described in sidewall interconnect.

Preferably, at least one described exhaust seam of sub-inflation unit described in each of described adjustment part extends along its length direction.

Preferably, at least one described exhaust seam of sub-inflation unit described in each of described adjustment part extends along its Width.

Preferably, at least one described exhaust seam of sub-inflation unit described in each of described adjustment part is arranged at sub-inflation unit described in corresponding each obliquely.

Preferably, the shape of at least one described exhaust seam of sub-inflation unit described in each of described adjustment part is selected from one or more in strip shape, triangle, circle, ellipse, polygon.

Preferably, the multiple described exhaust seam of sub-inflation unit described in each of described adjustment part arranges apart from one another by ground.

Preferably, adjustment part described in two is positioned at the bight of described square air-packing device, forms interior right angle to make described container cavity.

Preferably, described container cavity has the opening for picking and placeing described article to be packaged, at the two opposite sides of contiguous described opening, be provided with adjustment part described in separately, thus the described at least partially sub-inflation unit be connected with described adjustment part is suitable for bending for opening described in involution.

Preferably, adjustment part described in each is suitable for filling in described container cavity, or extends in outside described container cavity, or by side seal seam together with described sidewall involution.

Preferably, described square container cavity is oblong or square.

Preferably, when comprising two or more described inflatable bodies, two or more described inflatable bodies involution is together to form described square container cavity.

Preferably, multiple described sidewall comprises a diapire and four perisporiums, and described diapire and described perisporium form described square container cavity.

Preferably, described square air-packing device also comprises at least one roof extending described perisporium.

Preferably, described square air-packing device also comprises a functional layer, and it is connected to described inflatable bodies and is arranged on to form inner bag layer in described square container cavity, or it is outer to form outer bag layer to be arranged on described inflatable bodies.

Preferably, multiple described sidewall comprises diapire, front perisporium, rear perisporium, left perisporium and right perisporium, wherein said front perisporium and described rear perisporium and described diapire are by bending multiple described inflation unit and being formed, and wherein left perisporium described in each and described right perisporium are by seaming conjunction by the side of two groups of sub-inflation unit by side seal, and be combined by the side seams of joint close and described diapire, thus do not need adjustment part to form described square container cavity.

Preferably, the sub-inflation unit that at least one group of sub-inflation unit of left perisporium described in each and described right perisporium is bent to form by the described inflation unit of communication paths and described front perisporium or rear perisporium is connected.

Preferably, described inflatable bodies comprises one first air chamber layer and one second air chamber layer, the described first air chamber layer overlapped and described second air chamber layer form inflation unit described in each through a series of sealing technology, the described plenum chamber of inflation unit described in one of them is provided with one or more described charge valve, and when described charge valve inflation terminates, after reaching preset air pressure in described plenum chamber, described charge valve automatic-sealed, to prevent Leakage Gas.

Preferably, described charge valve comprise two valve films respectively with described first air chamber layer and the described second air chamber layer heat-sealing of the described inflation unit of described inflatable bodies, a free air diffuser is formed between described two valve films, after being inflated to described inflation unit by described free air diffuser, the inside face automatic absorbing of described two valve films sticks together, to prevent the gas entering described inflation unit from described free air diffuser reverse osmosis.

Preferably, described charge valve is self binding film non return valve, it comprises one first valve film, one second valve film, with a non-return diaphragm seal, described first valve film and described non-return diaphragm seal are positioned at skin, described second valve film is between described first valve film and described non-return diaphragm seal, a free air diffuser is formed between described first valve film and described second valve film, a check cavity is formed between described second valve film and described non-return diaphragm seal, when via described gas passage by described free air diffuser after insufflation gas in described inflation unit, described first valve film, the inside face automatic absorbing of described second valve film and described non-return diaphragm seal sticks together, to stop the gas in described inflation unit from described free air diffuser reverse osmosis, and can optionally enter described check cavity when gas returns, and the gas entering described check cavity can produce pressure effect to described second valve film, thus close described free air diffuser further, thus prevent gas reverse osmosis.

According to another aspect of the present utility model, the utility model also provides a kind of square air-packing device, it comprises at least one inflatable bodies and at least one charge valve, described inflatable bodies comprises multiple inflation unit, inflation unit described in each has a plenum chamber, described charge valve is connected to inflate to described inflation unit with described plenum chamber, inflation unit described in each forms multiple sub-inflation unit after bending and heat-sealing, and multiple described sub-inflation unit forms multiple sidewall, described in each, the area of sidewall is identical, and make described multiple sidewall be suitable for the square container cavity of formation one, to hold article to be packaged thus to provide air cushioning effect for described article to be packaged.

Preferably, the quantity of the described sub-inflation unit of sidewall described in each and measure-alike.

Preferably, sidewall described in each has 3-100 described sub-inflation unit.

Preferably, multiple described sidewall comprises at least one diapire, and four perisporiums, and described diapire and described perisporium form described square container cavity.

Preferably, described square container cavity also has the opening for picking and placeing described article to be packaged, and described square air-packing device also comprises at least one roof being connected to described perisporium, for opening described in involution.

Preferably, after multiple described inflation unit is divided into multiple described sub-inflation unit, the described sub-inflation unit of part forms adjustment part, sub-inflation unit described in remainder is for the formation of multiple described sidewall, described adjustment part is suitable for folded, thus the described square container cavity that multiple described sidewall is formed is formed interior right-angle structure.

Preferably, the described sub-inflation unit of described adjustment part can not be inflated by the involution of sealing seam, thus forms unaerated structure.

Preferably, the described sub-inflation unit of described adjustment part is provided with exhaust seam, and to reduce the charge air of sub-inflation unit described in each, thus whole described adjustment part is applicable to folded.

Preferably, described inflatable unit comprises one first air chamber layer and one second air chamber layer, the described first air chamber layer overlapped and described second air chamber layer form inflation unit described in each through a series of sealing technology, the described plenum chamber of inflation unit described in one of them is provided with one or more described charge valve, and when described charge valve inflation terminates, after reaching preset air pressure in described plenum chamber, described charge valve automatic-sealed, to prevent Leakage Gas.

According to another aspect of the present utility model, the utility model provides a kind of manufacture method of square air-packing device, and it comprises the steps:

A () is by one first air chamber layer, one or more charge valve and one second air chamber is stacked is combined;

B () forms at least one inflatable bodies by a series of hot sealing process, described inflatable bodies comprises one or more inflation unit respectively with a plenum chamber, and wherein said charge valve is connected to inflate to described plenum chamber with described plenum chamber; And

By inflation unit bending described in each to form multiple sub-inflation unit, wherein the described sub-inflation unit of part forms adjustment part, remain described sub-inflation unit and form multiple sidewall, wherein said multiple sidewall is suitable for forming square container cavity, to be used for packing article to be packaged.

Preferably, in described step (c), by the heat-sealing of sealing seam, the described sub-inflation unit of described adjustment part can not be inflated.

Preferably, in described step (c), by the heat-sealing of exhaust seam, to reduce the charge air of the described sub-inflation unit of described adjustment part.

Preferably, adjustment part described in two lays respectively at the bight of described square air-packing device.

Preferably, described container cavity has the opening for picking and placeing described article to be packaged, is respectively equipped with described adjustment part at the two opposite sides of the position of contiguous described opening.

Preferably, the method also comprises step: linked together by abutted seam by two or more inflatable bodies, for the described square container cavity of formation.

Preferably, the method also comprises step: be connected between described inflation unit adjacent for part by communication paths.

Preferably, the method also comprises step: by sub-inflation unit described in two groups of at least one described sidewall by side seal seam by its side seals together.

Preferably, the method also comprises step: a functional layer is connected to described inflatable bodies, to form inner bag layer or outer bag layer.

Accompanying drawing explanation

Figure 1A and Figure 1B is the schematic diagram of traditional packing chest.

Fig. 2 is the square air-packing device schematic perspective view according to first preferred embodiment of the present utility model.

Fig. 3 is the plan sketch be according to the square air-packing device of above preferred embodiment of the present utility model under unaerated state.

Fig. 4 is the schematic perspective view with unaerated structure be according to the square air-packing device of above preferred embodiment of the present utility model under inflated condition.

Fig. 5 A and Fig. 5 B is the structural representation after cutting open along A-A line in Fig. 4 respectively.

Fig. 6 is the schematic perspective view of the square air-packing device according to second preferred embodiment of the present utility model.

Fig. 7 is the plan sketch be according to the square air-packing device of above-mentioned second preferred embodiment of the present utility model under unaerated state.

Fig. 8 is the schematic perspective view with secondary inflation main body be according to the square air-packing device of above-mentioned second preferred embodiment of the present utility model under inflated condition.

Fig. 9 A and Fig. 9 B is the structural representation after cutting open along B-B line in Fig. 7 respectively.

Fig. 9 C and Fig. 9 D is a kind of structural representation of variant embodiment.

Fig. 9 E is the structural representation of another variant embodiment.

Figure 10 is the schematic perspective view of the square air-packing device according to the 3rd embodiment of the present utility model.

Figure 11 be according to the square air-packing device involution opening of above-mentioned 3rd preferred embodiment of the present utility model after schematic diagram.

When Figure 12 is the unaerated according to the square air-packing device of above-mentioned 3rd preferred embodiment of the present utility model and in the schematic diagram of deployed condition.

Schematic diagram when Figure 13 is the inflation according to the square air-packing device of above-mentioned 3rd preferred embodiment of the present utility model.

Figure 14 is the schematic perspective view of the square air-packing device according to the 4th preferred embodiment of the present utility model.

Figure 15 is the decomposing schematic representation of the square air-packing device according to above-mentioned 4th preferred embodiment of the present utility model.

Figure 16 is the expansion schematic diagram of the square air-packing device according to above-mentioned 4th preferred embodiment of the present utility model.

Figure 17 is the schematic perspective view of a kind of variant embodiment of square air-packing device according to above-mentioned 4th preferred embodiment of the present utility model.

Figure 18 is the expansion schematic diagram of the variant embodiment of square air-packing device according to above-mentioned 4th preferred embodiment of the present utility model.

Figure 19 is the expansion schematic diagram of the another kind of variant embodiment of square air-packing device according to above-mentioned 4th preferred embodiment of the present utility model.

Figure 20 is the schematic perspective view of the square air-packing device according to the 5th preferred embodiment of the present utility model.

Figure 21 is the bottom construction schematic diagram of the square air-packing device according to above-mentioned 5th preferred embodiment of the utility model.

Figure 22 is the structural representation of the deployed condition of square air-packing device according to above-mentioned 5th preferred embodiment of the utility model.

Figure 23 is the structural representation of a kind of charge valve of square air-packing device according to above preferred embodiment of the present utility model.

Figure 24 is the structural representation of the another kind of charge valve of square air-packing device according to above preferred embodiment of the present utility model.

Figure 25 is the cutaway view of the above-mentioned charge valve of square air-packing device according to above preferred embodiment of the present utility model.

Figure 26 A and Figure 26 B is the above-mentioned charge valve partial enlargement structural representation of the square air-packing device according to above preferred embodiment of the present utility model.

Detailed description of the invention

Below describe and realize the utility model for disclosing the utility model to enable those skilled in the art.Preferred embodiment in below describing only as an example, it may occur to persons skilled in the art that other apparent modification.The groundwork of the present utility model defined in the following description can be applied to other embodiments, deformation program, improvement project, equivalent and not deviate from the other technologies scheme of spirit and scope of the present utility model.

The square air-packing device according to first preferred embodiment of the present utility model as shown in Fig. 2 to Fig. 5 B, described air-packing device inflation process in and inflation terminate after, multiple sidewall can be formed to be enclosed in around article to be packaged.When article to be packaged to be placed in described air-packing device and to be subject to the pressure of either direction, described air-packing device is dispersed this pressure, is squeezed even damages to avoid article to be packaged.

Correspondingly, described air-packing device comprises an inflatable bodies 10, and one or more charge valve 20, and described charge valve 20 is used for described inflatable bodies 10 insufflation gas, and described inflatable bodies 10 can store this gas after inflation terminates.

In this preferred embodiment of the present utility model, described inflatable bodies 10 comprises one or more inflation unit 11, wherein every described inflation unit 11 comprises one first air chamber layer 101 and one second air chamber layer 102, described first air chamber layer 101 arranges to form plenum chamber 12 and an inflation inlet 13 respectively with described second air chamber layer 102 overlappingly, and wherein said plenum chamber 12 is connected with described inflation inlet 13.

Every described charge valve 20 is arranged on every described inflation inlet 13 place that described first air chamber layer 101 and described second air chamber layer 102 overlap formation, and every described charge valve 20 is connected with every described plenum chamber 12, be able to by every described charge valve 20 to insufflation gas in every described plenum chamber 12 to make described air-packing device, and after every described charge valve 20 inflation terminates, after reaching preset air pressure in every described plenum chamber 12, every described charge valve 20 can automatic-sealed, revealed by every described charge valve 20 to prevent the gas in every described plenum chamber 12, thus, guarantee described air-packing device reliability in use.

Every described inflation unit 11 has a sealing sidewall 103, forms a long and narrow partitioning slot 104 between the described sealing sidewall 103 of every adjacent described inflation unit 11, and every described inflation unit 11 is arranged side by side to arrange and forms described inflatable bodies 10.It is worth mentioning that, almost parallel between every described inflation unit 11, to make, the shape of described inflatable bodies 10 is relatively stable to be controlled in the process of producing with being easy to.

Also it is worth mentioning that, in the process that described air-packing device is shaping, every described partitioning slot 104 is sealed by described first air chamber layer 101 and described second air chamber layer 102 and is formed, especially, in this preferred embodiment of the present utility model, every described partitioning slot 104 seals described first air chamber layer 101 and described second air chamber layer 102 by hot sealing process and is formed, those skilled in the art are to be understood that, when sealing described first air chamber layer 101 with described second air chamber layer 102, be not limited to hot sealing process.Forming this mode of every described partitioning slot 104 by sealing described first air chamber layer 101 and described second air chamber layer 102, making every described inflation unit 11 can form independent described plenum chamber 12.In addition, the position of every described partitioning slot 104 and quantity can need to adjust according to different uses, with the described air-packing device making described inflatable bodies 10 form difformity and specification, thus meet different use needs.

What it will be appreciated by those skilled in the art that is, every described plenum chamber 12 can realize independent insufflation gas by every described charge valve 20 and store gas, and after wherein there is breakage or gas leakage in plenum chamber 12 described in any one, the described plenum chamber 12 still aerification adjoined with it, like this when described air-packing device is used for packing article to be packaged, probability impaired for article to be packaged is dropped to minimum, thus the reliability of described air-packing device have also been obtained and effectively ensures.

In this preferred embodiment, as shown in Figure 3 and Figure 4, described first air chamber layer 101 arranges to form a gas fill port 14 with described second air chamber layer 102 overlappingly, and wherein said gas fill port 14 is communicated with respectively with every described inflation inlet 13.It is worth mentioning that, because every described inflation inlet 13 is connected with every described charge valve 20, so described gas fill port 14 is connected with every described charge valve 20.

In addition, in order to realize insufflation gas in described gas fill port 14 easily, charging connector or other the structure being easy to utilize inflation pump to inflate can be optionally set at the inflation end of described gas fill port 14, to adapt to inflation pump, in this case, user can utilize inflation pump or other gas filled device to insufflation gas in described gas fill port 14 easily, therefore, the gas filled device that this preferred embodiment of the present utility model utilizes is not construed as limiting the utility model itself.When gas is charged into after in described gas fill port 14, this gas is able to be assigned to coupled logical every described charge valve 20 by described gas fill port 14, and enter in every described plenum chamber 12 by every described charge valve 20, when inflation terminates, and reach preset air pressure in every described plenum chamber 12 after, every described charge valve 20 can automatic-sealed, leak from every described charge valve 20 to prevent the gas in every described plenum chamber 12, thus every described charge valve 20 achieves the inflation object to described inflatable bodies 10.

Those skilled in the art are to be understood that, in the process to described inflatable bodies 10 insufflation gas, described gas fill port 14 can realize distributing to every described charge valve 20 gas be filled in described gas fill port 14, so that realize insufflation gas in described inflatable bodies 10 better, therefore, the function of described gas fill port 14, described gas fill port 14 is actually a gas distribution channel.But those skilled in the art it is to be further understood that when described air-packing device does not provide described gas fill port 14, person skilled also can by every described charge valve 20 insufflation gas individually in every described plenum chamber 12.

It is worth mentioning that, also can be interconnected between every described plenum chamber 12, just can realize to whole every described plenum chamber 12 insufflation gas by means of only a described charge valve 20 like this.

In this preferred embodiment, described first air chamber layer 101 optionally seals to form one or more bending seam 105 with described second air chamber layer 102, every described bending seam 105 makes every described inflation unit 11 form the sub-inflation unit 111 of multiple mutual interchange, and the both ends of every described bending seam 105 do not extend to the every described sealing sidewall 103 forming every described plenum chamber 12, in other words, a communicating passage 112 is formed between the end of every described bending seam 105 and every described partitioning slot 104, for the every described sub-inflation unit 111 of adjoining is communicated with, by this way, when inflating to a described sub-inflation unit 111 of described inflation unit 11, this gas is able to the whole described sub-inflation unit 111 entering into described inflation unit 11 via every described communicating passage 112, thus, achieve the inflation object to described inflation unit 11.In other words, the every described sub-inflation unit 111 of a described inflation unit 11 is able to be charged gas by every described communicating passage 112.

It is worth mentioning that, the position of the every described bending seam 105 of every described inflation unit 11 is corresponding, arranges described bending seam 105, thus make every described inflation unit 11 form corresponding every described sub-inflation unit 111 to arrange formation one.Described air-packing device is formed in order to make described inflatable bodies 10, the every described inflation unit 11 of described inflatable bodies 10 has respectively described in multiple row and bends seam 105, after every described inflation unit 11 is charged gas, every described inflation unit 11 is able to bending at every described bending seam 105 place, to form multiple sidewall.As shown in Figure 2, in this preferred embodiment of the present utility model, every described inflation unit 11 is bending at every described bending seam 105 place, thus the described air-packing device making multiple described sub-inflation unit 111 be formed has a diapire, four perisporiums and a roof, and described diapire, described four perisporiums form a container cavity and an accent respectively, article to be packaged are able to be put in described container cavity by described accent, then by described roof, described accent is sealed, to complete the packing work treating connection with wrapping of piece.

What be worth one is, the position of described bending seam 105 and the columns of formation can adjust according to different needs, with the described air-packing device making described inflatable bodies 10 form difformity and specification, always, the difference meeting user uses needs.

Also it is worth mentioning that, after described air-packing device is formed, the shape of every described inflation unit 11 can change, like this, the needs of the size of the adaptive different article to be packaged of described air-packing device can be made, to make described air-packing device, there is good commonality.In addition, after article to be packaged are packaged in the described container cavity of described air-packing device, described air-packing device and article to be packaged in conjunction with compact, so article to be packaged can not from landing in the described container cavity of described air-packing device.

As shown in Figure 3 and Figure 4, sealing seam 106 is respectively arranged with in the multiple described inflation unit 11 of the continuous print of the both sides of described inflatable bodies 10, every described sealing seam 106 is formed by hot sealing process with described second air chamber layer 102 by described first air chamber layer 101, in this preferred embodiment of the present utility model, every described sealing seam 106 is corresponding with the position of every described bending seam 105, like this after the every described inflation unit 11 of described inflatable bodies 10 is charged gas, every described sealing seam 106 makes described air-packing device in relevant position, as as described in four perisporiums and as described in the junction of diapire form unaerated structure 15.In this way, when in the process to insufflation gas in the every described inflation unit 11 of described inflatable bodies 10, described inflatable bodies 10 automatically can form described diapire, described four perisporiums and described roof, thus, automatically form described container cavity.In this case, described unaerated structure 15 is positioned at the corner of described air-packing device, thus the existence of described unaerated structure 15 is unlikely to the result of use affecting described air-packing device.It is worth mentioning that, as shown in Figure 3, because form described unaerated structure 15, the sub-inflation unit 111 forming sidewall is caused not inflate, this a little inflation unit 111 can arrange communication paths 113, thus is connected with other inflation unit 11 not arranging described sealing seam 106, thus in gas replenishment process, when other adjacent inflation unit 11 are inflated, by these communication paths 113, this little inflation unit 111 is inflated.

In addition, in variant embodiment as shown in Figure 9 C and 9D, can there is no described unaerated structure 15 yet, but directly by joint close 114 involution together, thus form described container cavity.Particularly, described left side perisporium 10L and described right side perisporium 10R separately with the lateral margin of diapire 10B by together with described joint close 114 involution, and the side of described left side perisporium 10L and two groups of sub-inflation unit 111 up and down of described right side perisporium 10R is also together with involution.

In addition, as shown in Figures 2 and 3, the both ends of described inflatable bodies 10 seal respectively by every described sealing seam 106, after being charged gas in the every described inflation unit 11 of described inflatable bodies 10, in the asymmetric side formation unaerated portion 16 of the described roof that described inflatable bodies 10 is formed, thus the described roof that every described sub-inflation unit 11 is formed can seal described accent easily.

As fig. 5 a and fig. 5b, after described air-packing device completes inflation, on the diapire that described unaerated structure 15 can be fitted in described air-packing device or described four perisporiums, also can be tucked in the described container cavity of described air-packing device by the gap between described diapire and described four perisporiums.Correspondingly, after described roof seals described accent, described unaerated portion 16 can be fitted in the outside face of described roof, also can be tucked in the described container cavity of described air-packing device.

It is worth mentioning that, after in the described container cavity that described unaerated structure 15 and described unaerated portion 16 are tucked into described air-packing device respectively, the outside face of described air-packing device is therefore clean and tidy, thus, facilitate the transport of described air-packing device.

Also it is worth mentioning that, every described partitioning slot 104, every described bending seam 105 seal described first air chamber layer 101 with every described sealing seam 106 by hot sealing process and are formed with described second air chamber layer 102, but when realizing the object forming every described partitioning slot 104, every described bending seam 105 and every described sealing seam 106, not only be confined to hot sealing process again, those skilled in the art will also be appreciated that and also can reach same effect by techniques such as glue bondings.

In this embodiment of the present utility model, described air-packing device not only may be used solely to pack article to be packaged, but also other packing articles can be coordinated to come together to use, traditional described packing chest of anticipating as shown in FIG. 1A and 1B.In this case, first article to be packaged are put in described container cavity that described air-packing device formed in gas replenishment process, and then described air-packing device is put in described packing chest.

It is the square air-packing device according to second preferred embodiment of the present utility model as shown in Fig. 6 to Fig. 9 B, in this preferred embodiment of the present utility model, described first air chamber layer 101 optionally seals to form one or more bending seam 105 with described second air chamber layer 102, every described bending seam 105 makes every described inflation unit 11 form the sub-inflation unit 111 of multiple mutual interchange, and the both ends of every described bending seam 105 do not extend to the every described sealing sidewall 103 forming described plenum chamber 12, therefore, a communicating passage 112 is formed between every described bending seam 105 and every described sealing sidewall 103, for the every described sub-inflation unit 111 of adjoining is communicated with, by this way, when inflating to a described sub-inflation unit 111 of described inflation unit 11, this gas is able to the whole described sub-inflation unit 111 entering into described inflation unit 11 via every described communicating passage 112, thus, achieve the inflation object to described inflation unit 11.In other words, the every described sub-inflation unit 111 of a described inflation unit 11 is able to be received in gas by every described communicating passage 112.

It is worth mentioning that, the position of the every described bending seam 105 of every described inflation unit 11 is corresponding, arranges described bending seam 105, thus make every described inflation unit 11 form corresponding every described sub-inflation unit 111 to arrange formation one.Described air-packing device is formed in order to make described inflatable bodies 10, the every described inflation unit 11 of described inflatable bodies 10 has respectively described in multiple row and bends seam 105, after every described inflation unit 11 is charged gas, every described inflation unit 11 is able to bending at every described bending seam 105 place, to form multiple sidewall.As shown in Figure 2, in this preferred embodiment of the present utility model, every described inflation unit 11 is bending at every described bending seam 105 place, form described air-packing device, and described air-packing device has a diapire, four perisporiums and a roof, and described diapire, described four perisporiums form a container cavity and an accent respectively, article to be packaged are able to be put in described container cavity by described accent, then by described roof, described accent is sealed, to complete the packing work treating connection with wrapping of piece.

Further, the every described sub-inflation unit 111 of multiple continuous print of the symmetry of described inflatable bodies 10 has at least one long and narrow sub-partitioning slot 1041, those skilled in the art are to be understood that, every described sub-partitioning slot 1041 to be sealed by hot sealing process by described first air chamber layer 101 and described second air chamber layer 102 and is formed, and is separated at least twice inflation unit 1111 to make every described sub-inflation unit 111 by described long and narrow sub-partitioning slot 1041.Certainly, multiple described sub-partitioning slot 1041 also can be set, thus inflation unit 111 sub-described in each is divided into multiple inflation unit 1111 further.

It is worth mentioning that, the both ends of every described sub-partitioning slot 1041 extend to a described bending seam 105 respectively, thus, every described inflation unit 1111 can be connected with described sub-inflation unit 111 by described communicating passage 112, like this when to arbitrary described sub-inflation unit 111 insufflation gas of a described inflation unit 11, whole described sub-inflation unit 111 of described inflation unit 11 and described inflation unit 1111 can both be charged gas.

It is worth mentioning that, the gas column diameter that every described inflation unit 1111 is formed is less than the gas column diameter that every described sub-inflation unit 111 is formed.

Further, the correspondence position of every described inflation unit 1111 has a son bending seam 1051 respectively, after being charged gas in every described inflation unit 1111, every described inflation unit 1111 automatically can bend at described son bending seam 1051 place, forms described air-packing devices with auxiliary every described inflation unit 11.Those skilled in the art should be understood that, every described son bending seam 1051 to be sealed by hot sealing process by described first air chamber layer 101 and described second air chamber layer 102 and formed.Certainly, described son bending seam 1051 also can be connected in one with the described sub-partitioning slot 1041 of correspondence and form integrative-structure.Namely the end of described sub-partitioning slot 1041 forms described son bending seam 1051.

Every described son bending seam 1051 can linearly or slant arrangements, by this way, after described air-packing device inflation terminates, as shown in fig. 9 a and fig. 9b, on the described diapire that every described inflation unit 1111 can be fitted in described air-packing devices or described four perisporiums, or be tucked in the described container cavity of described air-packing device by the gap between described diapire and described four perisporiums.Described son bending seam 1051 mainly plays the charge air reducing corresponding described sub-inflation unit 111, and its shape and size are not restricted, such as, also can be shape as shown in fig. 9e.

It is worth mentioning that, every described inflation unit 1111 is used for the buffer capacity of the described diapire of described air-packing device that sub-inflation unit 111 described in reinforcement formed and the junction of described four perisporiums.

The manufacture method of above-mentioned air-packing device of the present utility model, it comprises the steps:

I one first air chamber layer 101, one or more charge valve 20 and one second air chamber layer 102 are superimposed together by ().

(ii) one or more inflation unit 11 respectively with a plenum chamber 12 are formed by a series of sealing technology, wherein said charge valve 20 is connected with described plenum chamber 12, thus, described charge valve 20 can be utilized to insufflation gas in described plenum chamber 12, and inflate at described charge valve 20 and terminate, after reaching preset air pressure in described plenum chamber 12, described charge valve 20 meeting automatic-sealed, reveals from described charge valve 20 to prevent the gas in described plenum chamber 12.

(iii) via described charge valve 20 to described plenum chamber 12 insufflation gas, every described inflation unit 11 roughly automatically forms a container cavity to pack article to be packaged along sealing station.

It is worth mentioning that, in step (ii), described sealing technology is heat-sealing, in this way, the described first air chamber layer 101 and described second air chamber layer 102 that overlap can be sealed better, and after being charged gas in described plenum chamber 12, this gas can not be revealed from heat-sealing position.

Further, also comprise the steps: in step (ii), sealing forms the almost parallel described partitioning slot 104 of multiple row, to form the described inflation unit 11 be arranged side by side, sealing forms spaced described bending seam 105, and in step (iii), make every described inflation unit 11 form multiple sidewall.Specifically, in the process of inflating to described plenum chamber 12, the described inflatable bodies 10 that every described inflation unit 11 is formed automatically can form a container cavity of general square shape along described partitioning slot 104 and described bending seam 105, thus provides spatial accommodation for article to be packaged.

Further, in step (ii), sealing forms multiple described sealing seam 106, and in step (iii), forms unaerated structure 15 and unaerated portion 16 respectively in the corner of described air-packing device.What be worth one is, when in the process to gas injection in every described inflation unit 11, described inflatable bodies 10 can automatically roughly along described partitioning slot 104, described bending seam 105 and described sealing seam 106 form a diapire of described air-packing device, four perisporiums and a roof, wherein said unaerated structure 15 is formed at the junction of described diapire and described four perisporiums, that is, described unaerated structure 15 is formed at the corner of described air-packing device, and in the process used, described unaerated structure 15 can fit in described diapire or described four perisporiums, or be tucked in described container cavity from the junction of described diapire and described four perisporiums, wherein said unaerated portion is formed at the sidepiece of described roof, like this after article to be packaged are put into described container cavity, described roof can be made to cover at described accent place better, to seal described container cavity.

Further, in step (ii), sealing forms the sub-partitioning slot 1041 of multiple row, to form the secondary inflation unit 1111 be arranged side by side; Sealing forms spaced son bending seam 1051, and in step (iii), every described inflation unit 1111 is able to roughly bend along every described son bending seam 1051.

That is, above-mentioned square air rubber capsule pack of the present utility model, multiple inflation unit 11 optionally bends and seals by it, and to form multiple sidewall, wherein multiple described sidewall forms the described container cavity for packing described article to be packaged.The ground arrangement in approximate right angle shape between wherein adjacent in multiple described sidewall two side, thus described container cavity is roughly square, thus be particularly suitable for packing square article described to be packaged.

Particularly, in the above-described embodiments, between the described diapire of described square air rubber capsule pack and four described perisporiums, in approximate right angle, ground arranges, also the ground arrangement in approximate right angle between adjacent two perisporiums of four described perisporiums, and described roof also can fold under the effect in described unaerated portion 16, thus four described perisporiums are the arrangement of approximate right angle ground, thus form square bag.

It is worth mentioning that, above-mentioned square air rubber capsule pack can form square structure, because in folding process, the air chamber layer of the redundance not participating in the sidewall forming described square package bag is defined the described unaerated structure 15 in above-described embodiment and described unaerated portion 16, thus make the convenient bending of whole described inflatable bodies 10, to form square structure.That is, described unaerated structure 15 and described unaerated portion 16 are equivalent to define adjustment part, form approximate right angle shape to make coupled sidewall.

In addition, described unaerated structure 15 and described unaerated portion 16 also may be embodied to inflatable structure, but the charge air of described inflatable structure is less than the charge air at described other positions of square package bag, thus described inflatable structure is suitable for bending, fold or deformation, thus also can make square structure, will further illustrate in following examples.

The square air-packing device according to the 3rd preferred embodiment of the present utility model as shown in Figure 10 to Figure 13.In this preferred embodiment, its shape is square, and in above-described embodiment, described square air-packing device is rectangle.That is, in this preferred embodiment of the present utility model, the area of each side is roughly the same, and interior angle is all rectangular, thus forms the square shape of comparatively rule.

In this preferred embodiment of the present utility model, described square air-packing device comprises inflatable bodies 10 described in two, its head and the tail two ends by abutted seam 107 involution together, and inflatable bodies 10 described in each comprises multiple inflation unit 11, inflation unit described in each 11 is formed sub-inflation unit 111 by multiple described inflation unit 11 after bending, thus multiple described sub-inflation unit 111 forms multiple sidewall.The multiple described sub-inflation unit 111 of inflatable bodies 10 described in two surrounds roughly foursquare container cavity 100, and has the opening 110 picking and placeing article to be packaged.

In this preferred embodiment of the present utility model, two interior angles of described square air-packing device have adjustment part 15 ' respectively, it is by arranging sealing seam 106, it can not be inflated, then by folding and heat-sealing, the square air-packing device that each side has 8 described sub-inflation unit 111 is formed.In addition, two two opposite sides of described opening 110 are also formed with adjustment part 16 ', and by pressing described adjustment part 16 ', 4 described sub-inflation unit 111 of other two two opposite sides of described opening 110 move pivotly, thus seal described opening 110.

As shown in Figure 13, described sealing seam 106 can with corresponding arranging and bend seam 105 and be located along the same line for bending, and perpendicular with the length direction of described inflation unit 11.It is worth mentioning that, the shape of described sealing seam 106, size and position are not restricted, and can arrange as required in practical application, as long as it only makes described adjustment part 15 ' not inflate.

Described square air-packing device fold and seal shaping after, adjustment part 15 ' described in bight is suitable for filling in described container cavity 100, also saliently can extend in the outside of described square air-packing device main body.And the air cushioning performance of whole described square air-packing device is unaffected.

It is worth mentioning that, as described in Figure, in this preferred embodiment of the present utility model, the described inflation unit 11 of described square air-packing device extends along horizontal direction, and the described inflation unit 11 in above-described embodiment extends in a longitudinal direction.

It is the square air-packing device according to the 4th kind of preferred embodiment of the present utility model as shown in Figure 14 to Figure 16, its shape is also square, and form downside wall 10a, four all sidewall 10b, and described downside wall 10a and four described all sidewall 10b has 6 described sub-inflation unit 111 separately, thus the area of each side is roughly equal, to form square.

It is worth mentioning that, as shown in Figure 14, described square air-packing device is formed by sealing and bending by the packing shown in Figure 16.Namely downside wall 10a described in it and front side perisporium and rear side perisporium can form 6 described son inflation main bodys by bending, and the described all sidewall 10b in the left and right sides are formed by heat-sealing by two groups 3 described sub-inflation unit 111 respectively.Particularly, by side seal seam 108 by the side seals of two groups 3 described sub-inflation unit 111 together, thus 6 described sub-inflation unit 111 are also provided respectively in the left and right sides.

In this preferred embodiment, described square air-packing device is also provided with a functional layer 30, it can be external packing layer or inner packing layer, thus provide extra function for described square air-packing device, it can be such as one deck buffer film, thus buffer action is provided, can be by other materials as heat-insulating heat-preserving material or light-shading and sun material etc. are made, thus other functions are provided.Such as also can be paper material thus become packing chest or packing box, also can other padded coamings as expanded material etc.Particularly, in an object lesson, described spatial folding formula air-packing device can be attached in described functional layer 30, thus when described square air-packing device inflation, automatically can strut described functional layer 30.That is, described functional layer 30 can be paper packaging box, described square air-packing device is installed in described paper packaging box, described paper packaging box is in folded state when described square air-packing device unaerated, when described square air-packing device inflation, its each air chamber is inflated, thus strutted by the described paper packaging box of folded state and formed can the casing of containing objects.

When described functional layer 30 forms inner bag, and when being embodied as one deck buffer film, it can be arranged in described square air-packing device with being suspended state, and after described square air-packing device inflation, can contact with the described downside wall of described square air-packing device or not contact.

As shown in Figure 16, adjustment part 15 in this preferred embodiment " not unaerated portion; but inflatable structure; but being provided with exhaust seam 109 in sub-inflation unit 111 described in each; it can arrange along the length direction of the described sub-inflation unit 111 of correspondence, thus inflation unit 111 sub-described in each is divided into minor diameter air chamber main body further, thus reduces charge air; facilitate follow-up folding and heat-sealing, to form interior right-angle structure.

As shown in Figure 17 to Figure 18, according to a kind of variant embodiment of above-mentioned 4th preferred embodiment of the present utility model, described square air-packing device is also formed with a side wall 10c, and it is suitable for the opening 110 of container cavity 100 described in involution.It is envisioned that described side wall 10c also can have 6 described sub-inflation unit 111.Certainly it will be appreciated by persons skilled in the art that and also may be embodied as other structures for opening described in involution 110.

In the variant embodiment shown in Figure 19, described adjustment part 15 " ' neither unaerated portion; but inflatable structure; but being provided with exhaust seam 109 ' in sub-inflation unit 111 described in each; it can arrange along the direction vertical with the length direction of corresponding described sub-inflation unit 111; thus reduce charge air, facilitates follow-up folding and seal to form interior right-angle structure.

It is worth mentioning that, described sub-partitioning slot 1041 in above-mentioned second preferred embodiment, son bending seam 1051 is also equivalent to exhaust seam, thus reduces the charge air forming adjustment part, be convenient to the folding of whole described air-packing device and heat-sealing, thus obtain interior right-angle structure.

In addition, those skilled in the art it is expected that, described square air-packing device of the present utility model is when forming square packaging bag, the number that its side has described sub-inflation unit 111 can be selected as required, such as there is 3-100 described sub-inflation unit 111 separately, but the number of the described sub-inflation unit 111 of each side is identical.And when number is not identical, or length not etc. time, rectangular packaging bag can be formed.

Be the square air-packing device according to the 5th preferred embodiment of the present utility model as shown in Figure 20 to Figure 22, it comprises inflatable bodies 10 and has adjustment part 15 described in two.Be provided with at least one charging valve 20 in described inflation buffer cell 10, it is suitable for being connected to each other with described adjustment part 15, to form an inflation buffer packing bag.Described charge valve 20 for inflating in described inflatable bodies 10, thus described inflatable bodies 10 is suitable for providing air cushioning effect to described article to be packaged.

Particularly, in this preferred embodiment of the present utility model, the inflatable bodies 10 of described spatial folding formula air-packing device, inflation buffer cell 10 in similar first embodiment of the present utility model, it also comprises multiple inflation unit 11, and be provided with partitioning slot 104 between adjacent air cells, and be bent to form different lateral by many row's bending seams 105.

In addition, its side links together respectively by side seal seam 108 by the both sides of described spatial folding formula air-packing device.Described side seal seam 108 can be continuous print hot-sealing line also can be interrupted node hot-sealing line.Thus, more specifically, described spatial folding formula air-packing device in this preferred embodiment of the present utility model is formed has a diapire 10a, and extends four perisporium 10b of described diapire 10a and have the air cushioning packaging bag of opening relative to the opposite side of described diapire 10a.

Adjustment part 15 described in two lays respectively at two corners of described spatial folding formula air-packing device, thus makes to be easy to folding at the corner of the described air cushioning packaging bag formed, and facilitates the shaping of spatial configuration.Further, described diapire 10a can roughly at right angles to arrange by respectively with four perisporium 10b, thus between described diapire 10a and four described perisporium 10b the oblong of formation rule or foursquare spatial accommodation 100.

Adjustment part 15 described in each can arrange multiple exhaust seam 109 in the described sub-inflation unit 411 of correspondence and realize, and these exhaust seams 109 decrease the charge air of corresponding described sub-inflation unit 111, thus is convenient to the folding of whole described adjustment part 15.And described exhaust seam 109, such as can be formed by sealing, its shape, size, position etc. are unrestricted, such as, can be hot-sealing line or the heat-sealing block of multiple transverse direction or longitudinal arrangement.

In addition, adjustment part 15 described in each extends between corresponding perisporium 10b and described diapire 10a, it can fill in described spatial accommodation 100, also can extend in the outside of described inflatable bodies 10, the air cushioning effect of the inflation buffer packing bag that described spatial folding formula air-packing device is formed is not affected.

It is worth mentioning that, in this preferred embodiment of the present utility model, for described left perisporium 10b, it has four described sub-inflation unit 111, is formed by sealing and fold by four described inflation unit 11.More specifically, the interlude of four described inflation unit 11 forms described adjustment part 15 because arranging described exhaust seam 109, and the described sub-air chamber that interlude both sides do not arrange described exhaust seam 109 forms described left perisporium 10b.Described left perisporium 10b by described side seal seam 108 by its side seals, and described end joint seal 108 simultaneously also by the side of described left perisporium together with the involution of described adjustment part 15, described end joint seal 108 may be embodied as continuous or interrupted hot-sealing line.

As shown in figure 23, described charge valve 20 is check valves, and it comprises two diaphragm seals 21 and 22, and what it was overlapped is fixed between described first air chamber layer 101 and described second air chamber layer 102, thus formation four-layer structure, form a filling channel 24 between described two diaphragm seals 21 and 22.Correspondingly, after described inflatable bodies 10 is inflated, described two diaphragm seals 21 and 22 are bonded together to be sealed by described filling channel 24, thus by air seal in the every described plenum chamber 12 of described inflatable bodies 10, when described inflatable bodies 10 comprises multiple described inflation unit 11, multiple described charge valve 20 is arranged in every described inflation unit 11 accordingly, with respectively by air seal in every described inflation unit 11.Especially, described first diaphragm seal 21 is bonded in described first air chamber layer 101 overlappingly, and described second diaphragm seal 22 is bonded in described second air chamber layer 102 overlappingly.When inflating to described inflatable bodies 10, gas is guided the described filling channel 24 entering and formed between described first diaphragm seal 21 and described second diaphragm seal 22.After described inflatable bodies 10 is full of gas, described first diaphragm seal 21 and described second diaphragm seal 22 bonded to each other thus seal the described filling channel 24 of described airbag.In addition, the gas pressure in described inflatable bodies in described two diaphragm seals 21 and 22, thus ensures that described two diaphragm seals 21 and 22 hold tightly together, and leaks out from described air valve 20 to prevent gas.That is, described charge valve is a check valve, and it allows gas enter described inflatable bodies 10 and prevent gas reverse osmosis from going out.

The formation of the described filling channel 24 of described charge valve 20 can arrange baffling device to realize between described two diaphragm seals 21 and 22, when described two diaphragm seals 21 and 22 and described 2 air chambers layer 101 and 102 are sealed, because the setting of described baffling device, described two diaphragm seals 21 and 22 can not heat-sealing completely, thus forms described filling channel 24.In a concrete example, described baffling device can be resistant to elevated temperatures ink.

As shown in Figure 24 to Figure 26 B, mainly illustrate the structure of another charge valve 20A, described charge valve 20A is double check valve (DCV), provides double sealing effect to give described airbag.Wherein said charge valve 20A comprises one first diaphragm seal 21A, an one second diaphragm seal 22A and non-return diaphragm seal 23A.

Described first diaphragm seal 21A and described second diaphragm seal 22A overlaps between the described first air chamber layer 101A of described inflation unit 11 and described second air chamber layer 102A.Described first diaphragm seal 21A and described second diaphragm seal 22A is the overlapped two thin layer flexible membranes be made of plastics.Preferably, described first diaphragm seal 21A and described second diaphragm seal 22A is identical two membranes.

Often described first diaphragm seal 21A and described second diaphragm seal 22A has a proximal edge, and it extends the entrance of the described charge valve 20A of described inflation unit 11, and a distal edge, and it is inner that it extends to described inflation unit.Preferably, described first diaphragm seal 21A and the described proximal edge of the second diaphragm seal 22A and the border of distal edge are adjoined separately.

In the present embodiment, the proximal edge of described first diaphragm seal 21A and described first air chamber layer 101A bonding.Proximal edge and the described second air chamber layer 102A of described second diaphragm seal 22A are bonding.

Described non-return diaphragm seal 23A is overlapped in the near-end of described first diaphragm seal 21A and described second diaphragm seal 22A, to form a filling channel 24A between described first diaphragm seal 21A and described non-return diaphragm seal 23A, and form a non-return passage 25A between described non-return diaphragm seal 23A and described second diaphragm seal 22A.

Described filling channel 24A be aligned to for described inflatable chamber 12A insufflation gas to be filled with described inflation unit 11, until by the air pressure in described inflatable chamber 12A, make the far-end of described first diaphragm seal 21A and described second diaphragm seal 22A overlapping and seal to close described filling channel 24A.According to this preferred embodiment, when having gas from when having gas leakage between described first diaphragm seal 21A and the far-end of described second diaphragm seal 22A, as shown in Figures 12 A and 12 B, in described inflatable chamber, the gas of 12 is guided and enters described non-return passage 25A, to produce supplementary air pressure, thus seal described filling channel 24A further, to compensate the deficiency of the sealing effectiveness of described first diaphragm seal 21A and described second diaphragm seal 22A.

Described filling channel 24A has two open ends, and one of them nearly open end is formed at the proximal edge of described first diaphragm seal 21A and described non-return diaphragm seal 23A.One of in addition open end far away extends to the distal edge of described first diaphragm seal 21A and described second diaphragm seal 22A, to be connected with described inflatable chamber 12A.Pressure gas can enter described inflatable chamber 12A by described filling channel 24A guiding.

It is worth mentioning that, when after described inflation unit 11 aerification, air pressure in described inflatable chamber 12A applies pressure to described first diaphragm seal 21A and described second diaphragm seal 22A, thus seal described first diaphragm seal 21A and described second diaphragm seal 22A distal edge, and seal the open end far away of described filling channel 24A.In addition, the far-end of described first diaphragm seal 21A and described second diaphragm seal 22A is sealed because of surface tension.

Described non-return diaphragm seal 23A is the thin layer flexible membrane be made of plastics.Preferably, described non-return diaphragm seal 23A, described first diaphragm seal 21A and described second diaphragm seal 22A are polyethylene (PE) film.In addition, often the thickness of described first air chamber layer 101A and described second air chamber layer 102A is greater than often described first diaphragm seal 21A, the thickness of described second diaphragm seal 22A and described non-return diaphragm seal 23A.

According to preferred embodiment of the present utility model, the length of described non-return diaphragm seal 23A is less than the length of often described first diaphragm seal 21A and described second diaphragm seal 22A, thus when described non-return diaphragm seal 23A is overlapped in the near-end of described first diaphragm seal 21A and described second diaphragm seal 22A, the far-end of described first diaphragm seal 21A and described second diaphragm seal 22A overlaps.It is worth mentioning that, the length of described non-return diaphragm seal 23A is defined as the distance between the proximal edge of described non-return diaphragm seal 23A and distal edge.Often the length of described first diaphragm seal 21A and described second diaphragm seal 22A is defined as the distance between the proximal edge of described first diaphragm seal 21A and described second diaphragm seal 22A and distal edge.

Correspondingly, the proximal edge of described first diaphragm seal 21A and described second diaphragm seal 22A and the proximal edge place of described non-return diaphragm seal 23A adjoin.In addition, the proximal edge of described non-return diaphragm seal 23A and the proximal edge of described second diaphragm seal 22A bonding.

Described non-return passage 25A is formed between described non-return diaphragm seal 23A and described second diaphragm seal 22A, and wherein said non-return passage 25A has an open end towards described inflatable chamber 12A and a Closed End to valve openings.In other words, the near-end of described non-return passage 25A is described closed end and the far-end of described non-return passage 25A is described open end.

Correspondingly, when gas is filled with described non-return passage 25A in described open end, described non-return passage 25A insufflation gas is to produce supplementary air pressure, thus the described filling channel 24A further between sealing described first diaphragm seal 21A and described second diaphragm seal 22A.

It is worth mentioning that, when being inflated to described inflatable chamber 12A by described filling channel 24A, the gas flow in described filling channel 24A is contrary with the gas flow of described non-return passage 25A.Therefore, gas can not be filled with described non-return passage 25A.When gas reveals back described non-return passage 25A from described inflatable chamber 12A, gas enters described non-return passage 25A and seals described filling channel 24A further to produce supplementary air pressure, thus prevents gas leakage.It is worth mentioning that, the gas of leakage, before revealing from the nearly open end of described filling channel 24A, can flow to the open end far away of described non-return passage 25A, thus avoid gas leakage from the open end far away of described filling channel 24A.In addition, described non-return diaphragm seal 23A and described first diaphragm seal 21A is sealed to seal described filling channel 24A due to surface tension.

In order to form described charge valve 20A in described inflation unit 11, described charge valve 20A also comprises one first sealed engagement place 201 to be bonded together by described first air chamber layer 101A and described first diaphragm seal 21A at the valve openings place of described inflation unit 11, with one second sealed engagement place 202 described second air chamber layer 102A, described non-return diaphragm seal 23A and described second diaphragm seal 22A are bonded together at the valve openings place of described inflation unit 11.

Correspondingly, the proximal edge of described first diaphragm seal 21A is bonded with described first air chamber layer 101A by described first sealed engagement place 201.The proximal edge of described second air chamber layer 102A and described second diaphragm seal 22A, the proximal edge of described non-return diaphragm seal 23A is bonded together by described second sealed engagement place 202A.Preferably, two apart from one another by sealed engagement place 201A be used for described first air chamber layer 101A and described first diaphragm seal 21A to bond, two apart from one another by the second sealed engagement place 202A be used for described second air chamber layer 102A, described non-return diaphragm seal 23A and described second diaphragm seal 22A.It is worth mentioning that, described first sealed engagement place 201A and described second sealed engagement place 202A can be hot-sealing line, also can be the heat-sealing of other shapes as crescent shape.In other words, the proximal edge of described first diaphragm seal 21A and described first air chamber layer 101A are by described sealed engagement place 201A heat-sealing.The proximal edge of described second air chamber layer 102A and described second diaphragm seal 22A, and the proximal edge of described non-return diaphragm seal 22 is by described second sealed engagement place 202A heat-sealing.

After remaining on described heat seal process, space is had between described first diaphragm seal 21A and described non-return diaphragm seal 23A, described charge valve 20A also comprises one first heat-resisting thing 26A, and it is formed between described first diaphragm seal 21A and described non-return diaphragm seal 23A to ensure the formation of described filling channel 24A.Described first heat-resisting thing 26A is used for preventing described first diaphragm seal 21A and described non-return diaphragm seal 23A to be pasted together completely after described heat seal process.

Particularly, described first heat-resisting thing 26A is arranged on the near side (ns) edge of described first diaphragm seal 21A and described non-return diaphragm seal 23A and is positioned at the valve openings place of described inflation unit 11, thus ensures that the described near-end of described filling channel 24A is in open mode.

Same, after remaining on described heat seal process, space is had between described second diaphragm seal 22A and described non-return diaphragm seal 23A, described charge valve 20A also comprises one second heat-resisting thing 27A, and it is formed between described second diaphragm seal 22A and described non-return diaphragm seal 23A to ensure the formation of described non-return passage 25A.

Particularly, described second heat-resisting thing 27A is arranged on the distal edge edge of described second diaphragm seal 22A and described non-return diaphragm seal 23A, thus ensures that the described far-end of described non-return passage 25A is in open mode.It is worth mentioning that, the near-end of described non-return passage 25A is closed by described second sealed engagement place 202.

According to this preferred embodiment, described first heat-resisting thing 26A and described second heat-resisting thing 27A is two refractory layers, and it is coated in the desired location on each self-corresponding film, is pasted together to prevent film in described pad envelope process.Described first heat-resisting thing 26A extends described non-return diaphragm seal 23A near-end side, and towards described first diaphragm seal 21A.The far-end that described second heat-resisting thing 27A extends described non-return diaphragm seal 23A is positioned at opposite side, and towards described second diaphragm seal 22A, wherein said second heat-resisting thing 27A is not arranged on the opposite side of the near-end of described non-return diaphragm seal 23A, and the described near-end of described like this non-return passage 25A can be closed by described second sealed engagement place 202A.It is worth mentioning that, described second heat-resisting thing 27A not only avoid described non-return diaphragm seal 23A with state the second diaphragm seal 22A and be bonded together, to ensure that the described far-end of described non-return passage 25A is in open mode, and the effect strengthened between described non-return diaphragm seal 23A and described first diaphragm seal 21A, thus because surface tension is to close described filling channel 24A.

Described charge valve 20A also comprises two side direction sealed engagement place 203A, and it is that two the 3rd sealed engagement are sentenced described for bonding the first diaphragm seal 21A and described non-return diaphragm seal 23A, thus forms the sidewall of described filling channel 24A.The width of described filling channel 24A is defined by described two side direction sealed engagement 203A.Particularly, described two side direction sealed engagement place 203A are two inclination hot-sealing lines, thus the width of described filling channel 24A successively decreases from each described inflatable chamber of described valve openings.In other words, the nearly open end of described filling channel 24A be a larger open end its be connected with described valve openings, and the open end far away of described filling channel 24A is a cone-shaped open end and be communicated with described inflatable chamber 12A.The filling channel 24A of described taper avoids gas to be leaked to described valve openings from described inflatable chamber 12A further.

Preferably, described lateral seal joint 203A extends to its distal edge from the proximal edge of described first diaphragm seal 21A and described second diaphragm seal 22A.Therefore, described lateral seal joint 203A is positioned at described first diaphragm seal 21A and described second diaphragm seal 22A proximal part and described non-return diaphragm seal 23A and is bonded together.Described lateral seal joint 203A is positioned at described first diaphragm seal 21A and described second diaphragm seal 22A distal portions and described first diaphragm seal 21A and described second diaphragm seal 22A and is bonded together.

Correspondingly, in order to inflate to described inflation unit 11, the pin of pump is inserted into described inflation inlet 13A pressure gas to be filled with described filling channel 24A, and wherein the inflation direction of gas is arrive open end far away from the nearly open end of described filling channel 24A.Described like this inflation unit 11 starts inflation.The air pressure of described inflatable chamber 12A increases thus struts described first air chamber layer 101A and described second air chamber layer 102A.Meanwhile, gas pressure, in described first diaphragm seal 21A and described second diaphragm seal 22A, particularly acts on the far-end of described first diaphragm seal 21A and described second diaphragm seal 22A.When after described inflation unit 11 completely insufflation gas, namely after arriving maximum charge, air pressure in described inflatable chamber 12A reaches enough to seal the far-end of described first diaphragm seal 21A and described second diaphragm seal 22A, with the open end described far away of filling channel 24A described in automatic-sealed.At this moment the pin of pump detaches described inflation inlet 13A.

When described first diaphragm seal 21A does not have together with complete involution with the far-end of described second diaphragm seal 22A, the gas of described inflatable chamber 12A may be leaked to described filling channel 24A.In order to avoid gas leakage is to described filling channel 24A, described non-return diaphragm seal 23A and described first diaphragm seal 21A involution are to seal the open end far away of described filling channel 24A.Particularly, the airintake direction of described non-return passage 25A is contrary with the inflation direction of described filling channel 24A.In addition, when the described open end of described non-return passage 25A is opened, the open end described far away of described filling channel 24A is closed.Therefore, gas enters from the described open end of described non-return passage 25A and is retained in described non-return passage 25A.

Described non-return passage 25A is filled with by gas, produces and supplement air pressure to seal described filling channel 24A further in described like this non-return passage 25A.Especially, the open end described far away of the described filling channel 24A between described first diaphragm seal 21A and described non-return diaphragm seal 23A is sealed.More specifically, the supplementary air pressure in described non-return passage 25A is higher, and the sealing effectiveness of described non-return diaphragm seal 23A is better.In other words, when gas is revealed from described inflatable chamber 12A with the air pressure reducing described inflatable chamber 12A, gas enters described non-return passage 25A to improve the air pressure of described non-return passage 25A.Therefore, the total gas pressure of described inflation pressure, namely the air pressure sum of described inflatable chamber 12A and described non-return passage 25A remains unchanged.Like this, the gas entering described non-return passage 25A from described inflatable chamber 12A can enter the sealing effectiveness strengthening described filling channel 24A.

One skilled in the art will understand that the embodiment of the present utility model shown in foregoing description and accompanying drawing only limits the utility model as an example and not.The purpose of this utility model is complete and effectively realize.Function of the present utility model and structural principle are shown in an embodiment and are illustrated, do not deviating under described principle, embodiment of the present utility model can have any distortion or amendment.

Claims

1. a square air-packing device, it is characterized in that, comprise at least one inflatable bodies and at least one charge valve, described inflatable bodies comprises multiple inflation unit, inflation unit described in each has a plenum chamber, described charge valve is connected to inflate to described inflation unit with described plenum chamber, described inflation unit forms multiple sidewall after bending and heat-sealing, the adjacent two side of described multiple sidewall roughly at right angles to arranges, thus described multiple sidewall forms a square container cavity, to hold article to be packaged thus to provide air cushioning effect for described article to be packaged.

2. square air-packing device as claimed in claim 1, it is characterized in that, multiple described inflation unit inflation unit described in each after bending of described inflatable bodies forms multiple sub-inflation unit, the described sub-inflation unit of part is by sealing the involution of seam thus can not inflating, thus formation adjustment part, described adjustment part makes sidewall described in adjacent two of coupled described sub-inflation unit formation at right angles to arrange.

3. square air-packing device as claimed in claim 1, it is characterized in that, multiple described inflation unit inflation unit described in each after bending of described inflatable bodies forms multiple sub-inflation unit, the described sub-inflation unit of part is by being vented the involution of seam to reduce charge air, thus forming the adjustment part being easy to folding and producing deformation, described adjustment part makes sidewall described in adjacent two of coupled described sub-inflation unit formation at right angles to be arranged.

4. square air-packing device as claimed in claim 3, is characterized in that, described exhaust seam by described adjustment part each described in multiple regional area involutions of sub-inflation unit, thus described multiple regional area can not be inflated.

5. square air-packing device as claimed in claim 3, is characterized in that, described adjustment part and coupled described sub-inflation unit formed adjacent two described in sidewall interconnect.

6. square air-packing device as claimed in claim 3, is characterized in that, at least one described exhaust seam of sub-inflation unit described in each of described adjustment part extends along its length direction.

7. square air-packing device as claimed in claim 3, is characterized in that, at least one described exhaust seam of sub-inflation unit described in each of described adjustment part extends along its Width.

8. square air-packing device as claimed in claim 3, is characterized in that, at least one described exhaust seam of sub-inflation unit described in each of described adjustment part is arranged at sub-inflation unit described in corresponding each obliquely.

9. square air-packing device as claimed in claim 3, is characterized in that, the shape of at least one described exhaust seam of sub-inflation unit described in each of described adjustment part be selected from strip shape, triangle, circle, ellipse, polygon one or more.

10. square air-packing device as claimed in claim 3, is characterized in that, the multiple described exhaust seam of sub-inflation unit described in each of described adjustment part arranges apart from one another by ground.

11. as the square air-packing device as described in arbitrary in claim 1 to 10, and it is characterized in that, adjustment part described in two is positioned at the bight of described square air-packing device, forms interior right angle to make described container cavity.

12. as the square air-packing device as described in arbitrary in claim 2 to 10, it is characterized in that, described container cavity has the opening for picking and placeing described article to be packaged, at the two opposite sides of contiguous described opening, be provided with adjustment part described in separately, thus the described at least partially sub-inflation unit be connected with described adjustment part is suitable for bending for opening described in involution.

13. square air-packing devices as claimed in claim 11, is characterized in that, adjustment part described in each is suitable for filling in described container cavity, or extends in outside described container cavity, or by side seal seam together with described sidewall involution.

14. as the square air-packing device as described in arbitrary in claim 1 to 10, and it is characterized in that, described square container cavity is oblong or square.

15. as the square air-packing device as described in arbitrary in claim 1 to 10, and it is characterized in that, when comprising two or more described inflatable bodies, two or more described inflatable bodies involution is together to form described square container cavity.

16. as the square air-packing device as described in arbitrary in claim 1 to 10, and it is characterized in that, multiple described sidewall comprises a diapire and four perisporiums, and described diapire and described perisporium form described square container cavity.

17. square air-packing devices as claimed in claim 16, is characterized in that, also comprise at least one roof extending described perisporium.

18. as the square air-packing device as described in arbitrary in claim 1 to 10, it is characterized in that, also comprise a functional layer, it is connected to described inflatable bodies and is arranged on to form inner packing layer in described square container cavity, or it is outer to form external packing layer to be arranged on described inflatable bodies.

19. square air-packing devices as claimed in claim 1, it is characterized in that, multiple described sidewall comprises diapire, front perisporium, rear perisporium, left perisporium and right perisporium, wherein said front perisporium and described rear perisporium and described diapire are by bending multiple described inflation unit and being formed, wherein left perisporium described in each and described right perisporium are by seaming conjunction by the side of two groups of sub-inflation unit by side seal, and be combined by the side seams of joint close and described diapire, thus do not need adjustment part to form described square container cavity.

20. square air-packing devices as claimed in claim 19, it is characterized in that, the sub-inflation unit that at least one group of sub-inflation unit of left perisporium described in each and described right perisporium is bent to form by the described inflation unit of communication paths and described front perisporium or rear perisporium is connected.

21. as the square air-packing device as described in arbitrary in claim 1 to 10, it is characterized in that, described inflatable bodies comprises one first air chamber layer and one second air chamber layer, the described first air chamber layer overlapped and described second air chamber layer form inflation unit described in each through a series of sealing technology, the described plenum chamber of inflation unit described in one of them is provided with one or more described charge valve, and when described charge valve inflation terminates, after reaching preset air pressure in described plenum chamber, described charge valve automatic-sealed, to prevent Leakage Gas.

22. square air-packing devices as claimed in claim 21, it is characterized in that, described charge valve comprise two valve films respectively with described first air chamber layer and the described second air chamber layer heat-sealing of the described inflation unit of described inflatable bodies, a free air diffuser is formed between described two valve films, after being inflated to described inflation unit by described free air diffuser, the inside face automatic absorbing of described two valve films sticks together, to prevent the gas entering described inflation unit from described free air diffuser reverse osmosis.

23. square air-packing devices as claimed in claim 21, it is characterized in that, described charge valve is self binding film non return valve, it comprises one first valve film, one second valve film, with a non-return diaphragm seal, described first valve film and described non-return diaphragm seal are positioned at skin, described second valve film is between described first valve film and described non-return diaphragm seal, a free air diffuser is formed between described first valve film and described second valve film, a check cavity is formed between described second valve film and described non-return diaphragm seal, when via described gas passage by described free air diffuser after insufflation gas in described inflation unit, described first valve film, the inside face automatic absorbing of described second valve film and described non-return diaphragm seal sticks together, to stop the gas in described inflation unit from described free air diffuser reverse osmosis, and can optionally enter described check cavity when gas returns, and the gas entering described check cavity can produce pressure effect to described second valve film, thus close described free air diffuser further, thus prevent gas reverse osmosis.

24. 1 kinds of square air-packing devices, it is characterized in that, comprise at least one inflatable bodies and at least one charge valve, described inflatable bodies comprises multiple inflation unit, inflation unit described in each has a plenum chamber, described charge valve is connected to inflate to described inflation unit with described plenum chamber, inflation unit described in each forms multiple sub-inflation unit after bending and heat-sealing, and multiple described sub-inflation unit forms multiple sidewall, described in each, the area of sidewall is identical, and make described multiple sidewall be suitable for the square container cavity of formation one, to hold article to be packaged thus to provide air cushioning effect for described article to be packaged.

25. square air-packing devices as claimed in claim 24, is characterized in that, the quantity of the described sub-inflation unit of sidewall described in each and measure-alike.

26. square air-packing devices as claimed in claim 25, is characterized in that, sidewall described in each has 3-100 described sub-inflation unit.

27. square air-packing devices as claimed in claim 24, is characterized in that, multiple described sidewall comprises at least one diapire, and four perisporiums, and described diapire and described perisporium form described square container cavity.

28. square air-packing devices as claimed in claim 27, it is characterized in that, described square container cavity also has the opening for picking and placeing described article to be packaged, and described square air-packing device also comprises at least one roof being connected to described perisporium, for opening described in involution.

29. as the square air-packing device as described in arbitrary in claim 24 to 28, it is characterized in that, after multiple described inflation unit is divided into multiple described sub-inflation unit, the described sub-inflation unit of part forms adjustment part, sub-inflation unit described in remainder is for the formation of multiple described sidewall, described adjustment part is suitable for folded, thus the described square container cavity that multiple described sidewall is formed is formed interior right-angle structure.

30. square air-packing devices as claimed in claim 29, is characterized in that, the described sub-inflation unit of described adjustment part can not be inflated by the involution of sealing seam, thus forms unaerated structure.

31. square air-packing devices as claimed in claim 29, is characterized in that, the described sub-inflation unit of described adjustment part is provided with exhaust seam, and to reduce the charge air of sub-inflation unit described in each, thus whole described adjustment part is applicable to folded.

32. square air-packing devices as claimed in claim 29, it is characterized in that, also comprise a functional layer, it is connected to described inflatable bodies and is arranged on to form inner packing layer in described square container cavity, or it is outer to form external packing layer to be arranged on described inflatable bodies.

33. square air-packing devices as claimed in claim 29, it is characterized in that, described inflatable unit comprises one first air chamber layer and one second air chamber layer, the described first air chamber layer overlapped and described second air chamber layer form inflation unit described in each through a series of sealing technology, the described plenum chamber of inflation unit described in one of them is provided with one or more described charge valve, and when described charge valve inflation terminates, after reaching preset air pressure in described plenum chamber, described charge valve automatic-sealed, to prevent Leakage Gas.

34. square air-packing devices as claimed in claim 33, it is characterized in that, described charge valve comprise two valve films respectively with described first air chamber layer and the described second air chamber layer heat-sealing of the described inflation unit of described inflatable bodies, a free air diffuser is formed between described two valve films, after being inflated to described inflation unit by described free air diffuser, the inside face automatic absorbing of described two valve films sticks together, to prevent the gas entering described inflation unit from described free air diffuser reverse osmosis.

35. square air-packing devices as claimed in claim 33, it is characterized in that, described charge valve is self binding film non return valve, it comprises one first valve film, one second valve film, with a non-return diaphragm seal, described first valve film and described non-return diaphragm seal are positioned at skin, described second valve film is between described first valve film and described non-return diaphragm seal, a free air diffuser is formed between described first valve film and described second valve film, a check cavity is formed between described second valve film and described non-return diaphragm seal, when via described gas passage by described free air diffuser after insufflation gas in described inflation unit, described first valve film, the inside face automatic absorbing of described second valve film and described non-return diaphragm seal sticks together, to stop the gas in described inflation unit from described free air diffuser reverse osmosis, and can optionally enter described check cavity when gas returns, and the gas entering described check cavity can produce pressure effect to described second valve film, thus close described free air diffuser further, thus prevent gas reverse osmosis.