CN109969610B - Three-dimensional folding type air packaging device and manufacturing method thereof - Google Patents

Abstract

A space-folding type air-packing device and a method of manufacturing the same, the air-packing device comprising: the inflatable buffer unit is provided with at least one inflation valve to inflate the inflatable buffer unit, so that the inflatable buffer unit can play an air buffer role after being inflated; and at least one folding unit connected to the inflatable cushion unit, wherein the folding unit is adapted to be folded so as to change the spatial configuration of the inflatable cushion unit. The air-packing device of the present invention has a folding unit suitable for folding, so that the whole air-packing device forms a more flexible and changeable three-dimensional configuration in a three-dimensional space.

Description

Three-dimensional folding type air packaging device and manufacturing method thereof

Technical Field

The present invention relates to an air-packing device, and more particularly, to a three-dimensional folding type air-packing device which forms a three-dimensional configuration by partial folding and a method of manufacturing the same.

Background

Current air packing bag encloses into one through a plurality of gas column lateral wall and can hold the chamber that holds of treating packing article usually, and every gas column lateral wall contains a plurality of buffering gas columns, thereby works as treat that packing article place when holding in the chamber, air packing bag the buffering gas column can be followed the not equidirectional and provide the air cushioning effect for treating packing article, so as to prevent treat that packing article suffers damage receiving striking or falling etc. in-process.

For example, a conventional U-shaped air packing bag is formed by upper and lower air column side walls arranged to overlap each other, and a bottom side wall located between the upper and lower air column side walls to define a receiving cavity having an opening at one end, into which the object to be packed can be inserted through the opening, and the upper and lower air column side walls and the bottom side wall can surround the object to be packed to provide an air cushion effect.

However, the conventional air packing bag is generally divided into several sections by the air cells to form a plurality of air column sidewalls. Specifically, as described above, the U-shaped air-packing bag may be formed by folding a sheet of uninflated packing material having a plurality of air cells, the packing material being provided with heat-sealing positions at portions of the air cells near the central position thereof so as to form two rows of folding points, so that the packing material having the plurality of air cells forms the bottom side walls between the two rows of folding points, and the packing material forms the upper and lower air column side walls at portions of the air cells on the upper and lower sides thereof, respectively.

That is, the conventional air packing bag can change the extending direction of the air chamber in space only by providing the bending point, and the three-dimensional shape of the formed space is relatively single. However, the shapes of the current articles to be packaged are various, and the air packaging bag with the traditional configuration can not meet the requirement of the articles to be packaged with the various configurations on the cushioning performance. In other words, the existing air packing bags cannot be formed in a diversified three-dimensional configuration.

On the other hand, in the conventional air-packing bag, in order to facilitate the air-packing, the extension directions of the respective air-packing cells are uniform, for example, the respective air cells are inflated in the longitudinal direction, and thus the air-packing bag is formed such that only the air cells are arranged in the longitudinal direction at the respective sides thereof, thereby providing only a single-directional air cushion, not a multi-stage cushion effect, when the air-packing bag is impacted.

Because the extending direction of the air chamber of the traditional air packaging bag is consistent and has no obvious turning and turning, when the air packaging bag is impacted, the air can flow in the air chamber in a large range, so that the air quantity in the local air chamber is insufficient, and the whole buffering effect of the air packaging bag is finally influenced.

Disclosure of Invention

The main object of the present invention is to provide a three-dimensional folding type air-packing device which enables the whole air-packing device to form a more flexible and variable three-dimensional configuration in a three-dimensional space by providing a folding unit suitable for folding.

It is another object of the present invention to provide a space-folding type air-packing device further comprising an air-packing unit which is adapted to be folded by having a smaller diameter of an air cell or a smaller amount of air inflation or not inflating as compared with the air-packing unit, thereby diversifying the extending direction of the air-packing unit to change the space configuration of the whole space-folding type air-packing device.

It is another object of the present invention to provide a space-folding type air-packing device in which the folding unit adapted to be folded and the air-packing unit are connected to each other and the folding unit can be selectively connected to any position of the air-packing unit so that the folding unit is located at any position of the whole of the space-folding type air-packing device to facilitate folding to form a space configuration.

It is another object of the present invention to provide a space-folding type air-packing device in which the folding units can be located at the sides, bottom, top, corners, parts, center, etc. of the whole space-folding type air-packing device so that the space-folding type air-packing device can be folded at these positions to produce a desired space configuration.

It is another object of the present invention to provide a space-folding type air-packing device in which the space-folding type air-packing device formed by folding has air cells of different extending directions on at least one side, for example, both transversely extending air cells and longitudinally extending air cells on one side, so that the air cells of different extending directions can provide cushioning effects in different directions to an article to be packed.

It is another object of the present invention to provide a space-folding type air-packing device in which air between different air cell portions of the air-packing unit connected to the folding unit does not flow each other over a large area when the space-folding type air-packing device is struck because of the blocking effect of the folding unit. That is, the heat-seal lands of the folding unit restrict the flow of air from one buffer air chamber connected to the folding unit to the other buffer air chamber, so that the local air-charge is not formed at the most to affect the buffering performance.

It is another object of the present invention to provide a foldable air-packing device wherein at least one side surface has both transversely extending air cells and longitudinally extending air cells, which not only provides a multi-level cushioning effect, but also provides air cushioning effects when one of the transversely extending air cells or one of the longitudinally extending air cells is damaged and leaks air, so that the cushioning performance of the whole foldable air-packing device is not affected.

It is another object of the present invention to provide a three-dimensional folding type air-packing device which can be formed into a substantially right-angled shape when the folding unit is located at a corner of the three-dimensional folding type air-packing device, thereby forming the three-dimensional folding type air-packing device into a right-angled configuration.

Another object of the present invention is to provide a three-dimensional folding type air-packing device, wherein the air-packing unit includes a plurality of air cells, each of the air cells having an air-packing check valve therein, the check valve preventing air leakage when air-packing is desired, and one of the air cells is damaged and air-leaking, the other air cells are not affected.

Another object of the present invention is to provide a three-dimensional foldable air-packing device which is simple in manufacturing process, low in cost and suitable for mass production.

To achieve the above object, the present invention provides a three-dimensional folding type air-packing device, comprising:

the inflatable buffer unit is provided with at least one inflation valve to inflate the inflatable buffer unit, so that the inflatable buffer unit can play an air buffer role after being inflated; and

at least one folding unit connected to the inflatable cushion unit, wherein the folding unit is adapted to be folded so as to change the spatial configuration of the inflatable cushion unit.

According to one embodiment of the invention, the folding unit is integrally connected to the inflatable cushioning unit.

According to one embodiment of the invention, the folding unit is attached to the inflatable cushioning unit by heat sealing or adhesive bonding.

According to one embodiment of the invention, the inflatable buffer unit comprises a plurality of air chambers, wherein the plurality of air chambers are bent to form a plurality of sub air chambers for each air chamber, wherein part of the sub air chambers form the folding unit, and the rest of the sub air chambers form the inflatable buffer unit.

According to one embodiment of the present invention, each of the sub air chambers of the folding unit is inflated by an amount smaller than that of the sub air chambers of the inflatable cushion unit, so that the folding unit is adapted to be folded.

According to one embodiment of the present invention, each of the sub-cells of the folding unit includes a plurality of small-diameter inflatable cells, and each of the sub-cells of the inflatable cushion unit is a large-diameter inflatable cell with respect to the small-diameter inflatable cells, so that the folding unit is easily folded with respect to the inflatable cushion unit.

According to an embodiment of the present invention, a plurality of partial regions of each of the sub-air cells of the folding unit are heat-sealed, thereby reducing an inflation amount of each of the sub-air cells of the folding unit.

According to one embodiment of the present invention, each of the sub-cells of the folding unit is in communication with the sub-cell of the inflatable cushion unit to which it is connected.

According to one embodiment of the present invention, the folding unit is formed of a non-inflatable film, and the inflatable cushion unit includes a plurality of air cells which provide air cushion performance by being inflated.

According to one embodiment of the invention, at least one said inflation valve is provided in each said air chamber.

According to one embodiment of the present invention, the sub-air cells constituting the air-filled cushion unit form a plurality of side walls defining an accommodating space for packing an article to be packed.

According to one embodiment of the present invention, the folded unit is located inside the accommodating space or outside the inflatable cushion unit after being folded.

According to one embodiment of the invention, each of said folding units comprises at least two folds, which are superimposed on each other and sealed together by means of a positioning seam.

According to one embodiment of the present invention, the extension directions of the sub-air cells connected to the folding unit and located at opposite sides of the folding unit are different by the folding action of the folding unit.

According to an embodiment of the present invention, the plurality of side walls include a bottom side wall, a rear side wall, an upper left side wall, a lower left side wall, an upper right side wall, and a lower right side wall, wherein the folding unit is disposed between the upper left side wall and the lower left side wall, and the folding unit is also disposed between the upper right side wall and the lower right side wall to form the right-angled receiving space.

According to one embodiment of the invention, it further comprises a top side wall connected to the rear side wall, a superimposed wall later connected to the top side wall, the superimposed wall being arranged overlapping the upper left side wall, the upper right side wall and the upper end of the rear side wall, thereby forming a two-layer plenum structure.

According to one embodiment of the invention, the outer side edges of the left and right lower side walls are sealed to the outer side edge of one fold of the folding unit by a joining seam and to the other fold of the folding unit by a positioning seam.

According to an embodiment of the invention, the positioning slits further seal the outer side edges of the left and right lower side walls to the rear side wall and/or the corresponding left and right upper side walls.

According to one embodiment of the present invention, the folding unit is an uninflated structure, and the upper left side wall and the upper right side wall are respectively communicated with the rear side wall through communication passages

According to one embodiment of the present invention, at least two of the air-packing devices of the space-folding type respectively pack both end portions of the article to be packed, and the right-angled receiving spaces allow each of the air-packing devices of the space-folding type to closely fit the end portion of the corresponding article to be packed, thereby enhancing air cushioning performance.

According to one embodiment of the present invention, the plurality of side walls includes a bottom wall and four peripheral walls connected to the bottom wall to define the accommodating space, and the two folding units are respectively located at corners of the accommodating space.

According to an embodiment of the present invention, it further comprises a functional layer disposed inside the accommodating space or outside the space-folding type air-packing device as an inner packing layer or an outer packing layer.

According to one embodiment of the present invention, the two oppositely disposed folding units are located at an opening of the air-packing device of the space-folding type, so as to be adapted to be folded to close the opening for accessing the article to be packed.

According to one embodiment of the present invention, a part of the air cells among the plurality of air cells is a large-diameter air cell, and another part of the air cells is a small-diameter air cell, thereby providing a multi-stage buffering effect.

According to one embodiment of the present invention, the folding unit is adapted to be located at any partial position of the space-folding type air-packing device.

According to one embodiment of the present invention, the folding unit is located at a top, bottom, side, corner, or center position of the space-folding type air-packing device.

According to one embodiment of the present invention, one side, two sides, three sides, or more than four sides of the folding unit are connected to the inflatable cushion unit.

According to an embodiment of the present invention, the space-folding type air-packing device has a first air cell layer and a second air cell layer, the air-packing valve is a one-way check valve and is disposed between the first air cell layer and the second air cell layer, and the one-way check valve is automatically closed when the air-packing cavity is filled with air, thereby preventing air leakage.

According to an embodiment of the present invention, the inflation valve includes two valve films respectively heat-sealed with the first and second air cell layers of the air cell, an air inlet passage is formed between the two valve films, and inner surfaces of the two valve films are automatically adsorbed and adhered together after the air cell is inflated through the air inlet passage, so as to prevent the gas entering the air cell from reversely permeating through the air inlet passage.

According to one embodiment of the invention, the inflation valve is a dual check valve, the inflation valve comprising;

a first sealing membrane and a second sealing membrane, the first sealing membrane and the second sealing membrane overlapping the first plenum layer and the second plenum layer of the plenum and extending from the air valve opening of the plenum into the inflation cavity of the plenum; and

a non-return sealing membrane overlapping the proximal ends of the first and second sealing membranes, to form an inflation channel between said first packing film and said non-return packing film and a non-return channel between said non-return packing film and said second packing film, wherein the inflation channel is arranged for inflating air into the inflation cavity to fill the air chamber until distal ends of the first sealing membrane and the second sealing membrane overlap and seal to close the inflation channel by air pressure within the inflation cavity, wherein when gas leaks from between the distal ends of the first and second sealing membranes, air in the inflation chamber is directed into the check passage to create supplemental air pressure, thereby further sealing the inflation channel to compensate for the lack of sealing effect of the first sealing membrane and the second sealing membrane.

According to one embodiment of the invention, the check passage has an open end opening toward the inflation chamber and a closed end opening toward the air valve, such that when air is inflated into the check passage at the open end, the check passage is inflated with air to create supplemental air pressure to further seal the inflation passage between the first sealing membrane and the second sealing membrane.

According to another aspect of the present invention, there is also provided a space-folding air-packing device comprising a first air-cell layer and a second air-cell layer, at least one air-filling valve being provided in the first air-cell layer and the second air-cell layer, and an inflatable space-folding air-packing device having a plurality of air cells being formed through a series of folding and heat-sealing, wherein the space-folding air-packing device has at least one longitudinal air cell and at least one lateral air cell on at least one side surface thereof, thereby providing a two-stage air cushion effect on the side surface.

Preferably, a plurality of the longitudinal air cells form a longitudinal air cell side wall, a plurality of the transverse air cells form a transverse air cell side wall, and the longitudinal air cell side wall and the transverse air cell side wall are connected to a folding unit, wherein the folding unit is folded so that the longitudinal air cell side wall and the transverse air cell side wall extend in different directions.

Preferably, the longitudinal chamber wall, the transverse chamber wall and the folding unit are integrally formed by a plurality of the air chambers and are communicated with each other, the plurality of the air chambers are divided into three sections of sub-air chambers, a middle section of the sub-air chamber forms the folding unit, and two sides of the middle section of the sub-air chamber respectively form the longitudinal chamber wall and the transverse chamber wall.

Preferably, a plurality of partial regions of the sub-air cells of the folded unit are heat-sealed to prevent the air from being inflated so that the amount of air inflated thereby is smaller than the amounts of air inflated by the sub-air cells of the longitudinal air cell walls and the lateral air cell walls, thereby allowing the folded unit to be easily folded.

Preferably, the heat-sealing of the respective sub-air cells of the folding unit is provided with a plurality of longitudinal air-blocking slits or transverse air-blocking slits, thereby allowing the folding unit to be easily folded.

Preferably, it is a plurality of the air chamber forms a plurality of lateral walls, a plurality of after buckling the lateral wall is including connecting end lateral wall as an organic whole, the back wall, upper left lateral wall, lower left lateral wall, upper right lateral wall, and lower right lateral wall, upper left lateral wall with be provided with one between the lower left lateral wall folding unit, upper right lateral wall and also be provided with one between the lower right lateral wall folding unit to form the right angle shape accommodation space, upper left lateral wall with the upper right lateral wall has an at least vertical air chamber respectively, lower left lateral wall with the lower right lateral wall has an at least horizontal air chamber respectively.

Preferably, it further comprises a top side wall connected to the rear side wall, a superimposed wall later connected to the top side wall, the superimposed wall being arranged overlapping with the upper left side wall, the upper right side wall and the upper end of the rear side wall, thereby forming a two-layer plenum chamber structure.

Preferably, at least two of the air-packing devices of a space-folding type respectively pack both end portions of the article to be packed, and the right-angled receiving space allows each of the air-packing devices of a space-folding type to closely fit the end portion of the corresponding article to be packed, thereby enhancing air cushioning performance.

Preferably, the folding unit comprises at least two folding portions, one end of the folding unit is folded along a folding line, and the other end of the folding unit is sealed by a positioning seam.

Preferably, the fold is substantially triangular in shape. It is understood that the folded portion may have other polygonal, circular, irregular shapes, etc.

According to another aspect of the present invention, there is also provided a method of manufacturing a space-folding type air-packing device including the steps of:

(a) arranging two air chamber layers and an inflation valve in an overlapping mode and carrying out heat sealing together, carrying out heat sealing along a plurality of rows of separation seams to form a plurality of air chambers, and carrying out heat sealing along a plurality of rows of bending seams to bend each air chamber of the plurality of air chambers into a plurality of sub air chambers so as to form a plurality of side walls, wherein the plurality of side walls form an accommodating space for packaging an article to be packaged after being inflated through the inflation valve;

(b) part of the sub air chambers reduce the air inflation amount through the heat sealing of the air blocking seams to form at least one folding unit, and the rest of the sub air chambers form an inflation buffer unit; and

(c) folding and holding the folding unit in a folded shape so that the air-filled cushion unit of the air-packing device of the space-folding type is made to have a predetermined spatial configuration in space.

It will be appreciated by those skilled in the art that in the above process, there may be no sequencing of steps, such as several heat sealing steps, between the steps.

Preferably, in the method of manufacturing the space-folding type air-packing device described above, the folding unit is folded and positioned within the accommodating space or outside the air-packing unit.

Preferably, in the above-described method of manufacturing the air-packing device of the space-folding type, the plurality of air blocking slits are aligned in the lateral and/or longitudinal direction and are sized such that the sub-cells of the folding unit remain in communication with the sub-cells of the air-packing unit.

Preferably, in the method of manufacturing a space-folding type air-packing device described above, a part of the sub-air cells forming the folding unit is selectively located at any local position of the plurality of air cells.

Preferably, in the method of manufacturing a three-dimensional folding air-packing device described above, after the inflation, the sub-air cells forming part of the folding unit are located at corner positions of the three-dimensional folding air-packing device.

Preferably, in the method of manufacturing the air-packing device of the space-folding type as described above, after the air-packing device of the space-folding type forms an air-cushion packing bag having an opening at one end for taking in and out the article to be packed, two of the folding units arranged oppositely are located adjacent to the opening so as to be adapted to be folded to seal the opening.

Preferably, in the method of manufacturing a space-folding type air-packing device described above, the folding unit is folded to form at least two folded portions, one end of which is folded along a folding line and the other end of which is further heat-sealed together by a positioning seam to maintain the folded shape.

Preferably, in the above-described method of manufacturing the air-packing device of the space-folding type, the extending direction of the sub-air cells connected to the folding unit and located on opposite sides of the folding unit is changed by the folding action of the folding unit.

Preferably, in the above method of manufacturing a space-folding type air-packing device, the bottom side wall and the rear side wall are formed by folding along the lines of the folding slits, and the upper left side wall, the lower left side wall, the upper right side wall, and the lower right side wall are further formed by folding of the two folding units to form the right-angled receiving space after being inflated.

Preferably, in the above method of manufacturing a space-folding type air-packing device, the folding portion is further folded along a plurality of rows of the folding seams to form a top side wall connected to the rear side wall, and a superimposed wall having both sides respectively joined to the rear side wall, the left upper side wall and the right upper side wall by heat-sealing through the superimposed seams.

Preferably, in the method of manufacturing a space-folding type air-packing device described above, the plurality of side walls includes a bottom wall and four peripheral walls connected to the bottom wall to define the accommodating space, and the two folding units are located at corners of the accommodating space, respectively.

Preferably, in the above-described method of manufacturing the air-packing device of the space-folding type, each of the folding units is heat-sealed together with the side edge of the corresponding peripheral wall by an end-seal seam so as to maintain the folded shape.

Preferably, in the above method of manufacturing a space-folding type air-packing device, each of the air cells has at least one of the air-filling valves which includes two valve films heat-sealed to the two air cell layers, respectively, an air inlet passage is formed between the two valve films, and inner surfaces of the two valve films are automatically sucked and adhered together after the air cells are filled with air through the air inlet passage to prevent reverse permeation of air entering the air cells through the air inlet passage.

Preferably, in the method of manufacturing a space-folding air-packing device as described above, each of said air containers has at least one of said air-packing valves including;

a first sealing membrane and a second sealing membrane, the first sealing membrane and the second sealing membrane overlapping between the two air chamber layers and extending into the plenum cavity of the air chamber; and

a non-return sealing membrane overlapping the proximal ends of the first and second sealing membranes, to form an inflation channel between said first packing film and said non-return packing film and a non-return channel between said non-return packing film and said second packing film, wherein the inflation channel is arranged to inflate air into an inflation cavity of the air chamber to fill the air chamber until distal ends of the first sealing membrane and the second sealing membrane overlap and seal to close the inflation channel by air pressure within the inflation cavity, wherein when gas leaks from between the distal ends of the first and second sealing membranes, air in the inflation chamber is directed into the check passage to create supplemental air pressure, thereby further sealing the inflation channel to compensate for the lack of sealing effect of the first sealing membrane and the second sealing membrane.

Drawings

Figure 1 is a perspective view showing a three-dimensional foldable air-packing device in accordance with a first preferred embodiment of the present invention.

FIG. 2 is a schematic view showing a state of use of the space-folding type air-packing device in accordance with the above-described first preferred embodiment of the present invention when applied to a packing printer.

Figure 3A is a schematic view showing an uninflated state of the space folding air-packing device in accordance with the above-described first preferred embodiment of the present invention.

FIG. 3B is a schematic view showing the structure of the folding unit of the air-packing device of the space folding type according to the first preferred embodiment of the present invention when it is not inflated.

Figure 4 is an uninflated unfolded schematic view of the space folding air-packing device in accordance with the above-described first preferred embodiment of the present invention.

Figure 5 is a schematic view showing the folding lines and the folding lines of the space folding type air-packing device in accordance with the above-described first preferred embodiment of the present invention.

Figure 6A is a schematic flow chart of the folding into the space configuration of the space folding type air-packing device in accordance with the above-described first preferred embodiment of the present invention.

Figure 6B is a schematic flow chart of the folding into the space configuration of the space folding type air-packing device in accordance with the above-described first preferred embodiment of the present invention to show the configuration when the positioning slits are not provided.

Figure 7 is a schematic structural view showing a modified embodiment of the space folding type air-packing device in accordance with the above first preferred embodiment of the present invention.

Figure 8A is a schematic structural view showing another modified example of the space folding type air-packing device in accordance with the above first preferred embodiment of the present invention.

Figure 8B is a schematic perspective view showing another modified embodiment of the air-packing device of the space folding type according to the above first preferred embodiment of the present invention.

Figure 8C is a structural view showing the unfolded state of the above-described another modified embodiment of the air-packing device of the space folding type according to the above-described first preferred embodiment of the present invention.

Figure 9 is a perspective view showing a space folding type air-packing device in accordance with a second preferred embodiment of the present invention.

Figure 10 is a perspective view showing the perspective view of the space folding type air-packing device in accordance with the above-mentioned second preferred embodiment of the present invention.

FIG. 11 is an expanded schematic view of the space folding air-packing device according to the second preferred embodiment of the present invention when it is not inflated.

Figure 12 is a schematic structural view showing a modified embodiment of the space folding type air-packing device in accordance with the above-mentioned second preferred embodiment of the present invention.

Figure 13 is a perspective view showing another modified embodiment of the space folding type air-packing device in accordance with the above-mentioned second preferred embodiment of the present invention.

Figure 14 is a perspective view showing the closed opening for taking in and out the packaged goods in the another modified embodiment of the space folding type air-packing device in accordance with the second preferred embodiment of the present invention.

Figure 15 is a schematic view showing the construction of the one-way air-filling valve of the space folding type air-packing device in accordance with the above-described first preferred embodiment of the present invention.

Figures 16 through 18B are schematic views showing the construction of another one-way air-filling valve of the space folding air-packing device in accordance with the above-described first preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

Referring to fig. 1 to 7, there is shown a space-folding type air-packing device according to a first preferred embodiment of the present invention which can be used to store various articles to be packed such as electronic products, foods, medical products, chemical materials, biomaterials, plastic ceramics, fast-moving consumer goods, etc. Since the space-folding type air-packing device has air-cushioning properties, it is suitable for providing an air-cushioning effect to the article to be packed.

Specifically, the space-folding type air-packing device includes at least one air-packing unit 10, the air-packing unit 10 being provided with at least one air-packing valve 20, and a folding unit 30. The inflatable cushioning element 10 is adapted to be interconnected with the folding element 30 to form an inflatable cushioning unitary structure. The inflation valve 20 is used to inflate the inflatable cushion unit 10, so that the inflatable cushion unit 10 is adapted to provide an air cushion effect to the article to be packaged.

In the preferred embodiment of the present invention, the folding unit 30 is adapted to be folded so as to change the arrangement and extending direction of the air-filled cushion units 10 connected thereto, thereby allowing the whole of the air-packing device to have a flexible three-dimensional configuration and thus can meet the packing requirements of different occasions.

The folded unit 30 and the inflatable cushioning unit 10 may be two separate pieces that are joined together by heat sealing, bonding, or the like. Preferably, the folding unit 30 and the inflatable cushioning unit 10 are integrally formed. That is, the folding unit 30 integrally extends to the inflatable cushion unit 10, and the folding unit 30 and the inflatable cushion unit 10 may be made of the same material. It can also be said that a partial portion of the entire space-folding type air-packing device forms the folding unit 30 and the remaining other portion forms the air-packing unit 10.

It is worth mentioning that the folding unit 30 can be attached to any position of the air-filled cushion unit 10, and it can be said that the folding unit 30 can be formed at any local position of the air-packing device of the space-folding type, so that the air-packing device of the space-folding type can be formed into various space configurations by the folding of the folding unit 30.

For example, the folding units 30 may be formed at any partial location of the side, top, bottom, corners, center, etc. of the space-folding type air-packing device as will occur to those skilled in the art. Thereby forming folds at these localized locations to change the spatial arrangement of the inflatable cushioning units 10 to form a variety of spatial configurations.

In particular, in this preferred embodiment of the invention, the folding unit 30 comprises at least two folds 31 and 32 arranged one above the other. The air-packing device of the space folding type includes two of the folding units 30, and the respective folding units 30 are folded in half with each other to form the folded portions 31 and 32. Each of the folding units 30 may be located at a substantially central position on both sides of the air-packing device of this preferred embodiment of the present invention, with the remaining parts of the air-packing device of the space-folding type forming the air-packing devices 10.

It is worth mentioning that after the folding unit 30 is folded in half, the folded portions 31 and 32 arranged to overlap each other are joined together, for example, by heat sealing or bonding. The folding unit 30 may be located outside the inflatable cushion unit 10, or may be located inside the inflatable cushion unit 10. That is, since the air-packing device 10 is provided at a position overlapping with the folding unit 30, i.e., outside or inside thereof, the air-packing performance of the air-packing device of the space-folding type with respect to the article to be packed is not affected.

In other words, because the folding unit 30 mainly plays a role of folding to generate deformation in the present invention, the air cushioning effect provided is limited, but because the folding unit 30 is located inside or outside the air-filled cushion unit 10 after the air-packing device of a space-folding type is filled and formed, the air-filled cushion unit 10 still plays an air cushioning effect at a position adjacent to the folding unit 30, so that the air cushioning performance of the entire air-packing device of a space-folding type is not affected.

The inflation buffer unit 10 comprises at least one air chamber 11, wherein the air chamber 11 comprises a first air chamber layer 101 and a second air chamber layer 102, which are overlapped with each other to form an inflation cavity 12 and at least one inflation inlet 13, and the inflation inlet 13 is communicated with the inflation cavity 12 to inflate the inflation cavity 12. As shown in the drawings, two or more air cells 11 are arranged side by side to form the air-filled cushion unit 10, wherein the air-filling valve 20 is provided to each of the air cells 11. In other words, each of the air cells 11 can be independently inflated, and an elongated separation seam 103 is formed between two adjacent air cells 11, which can be implemented as a heat seal line between two adjacent air cells 11, so that the inflation cavity 12 can be divided into a plurality of separate inflation cavities 12 by the separation seams 103. Thus, when one of the air chambers 11 is damaged and leaks air, the other air chambers 11 may not be affected. It is of course worth mentioning that the air chambers 11 may also be interconnected, so that only one inflation valve 20 is needed to inflate all the air chambers 11. That is, the air-packing device of the space folding type of the present invention can form the plurality of air cells 11 by the heat-sealing of the first air cell layer 101 and the second air cell layer 102.

In addition, since the shape of each air cell 11 can be changed after inflation, the inflatable cushioning unit 10 can be made in various shapes and sizes. The air cells 11 may be in the form of a bar (e.g., a transverse bar and/or a longitudinal bar, etc.), a block, etc., and the shape thereof is not limited, and in this preferred embodiment, the air cells 11 may be formed in the form of a bar. In the preferred embodiment, the inflation buffer unit 10 may further form an inflation channel 14, the inflation channel 14 is communicated with the inflation port 13 and is communicated with each air chamber 11 through one or more inflation valves 20, so that when the inflation port 13 is inflated, air enters the inflation channel 14, and then the inflation channel 14 guides the air into the corresponding inflation valve 20, so that the air enters each air chamber 11 again. That is, the inflation passage 14 is an air distribution passage that distributes the air inflated from the inflation port 13 to the respective air cells 11. An air nozzle may be provided at the air filling port 13 to be connected to an air filling device such as an air pump to fill the space-folding type air-packing device with air.

Each of the air cells 11 of the inflatable cushioning unit 10 has a plurality of bending seams 104, so that each of the air cells 11 further forms a plurality of corresponding sub-air cells 111. It is worth mentioning that the bending seams 104 of the air chambers 11 correspond to each other, that is, the air-filled cushioning unit 10 has a plurality of rows of bending seams 104 arranged at intervals, and the bending seams 104 arranged at the air chambers 11 are arranged along a straight line, but are not continuous, so that a side wall is formed between two adjacent rows of the bending seams 104, thereby forming a plurality of side walls of the air-cushioning packaging box, which enclose a receiving cavity for receiving the articles to be packaged. It can also be said that the air-filled cushion cell 10 has a plurality of rows of folding slits 104 for folding, which may be arranged as nodal lines disposed at intervals from each other, so that the air-filled cushion cell 10 forms a plurality of air cell sidewalls along the rows of folding slits 104.

In addition, the number of the bending seams 104 of each air chamber 11 may be set as required, that is, the number of the rows of the bending seams 104 of the inflatable cushion unit 10 may be changed, so that the corresponding inflatable cushion unit 10 may have 3, 4 or more side walls. So that the space-folding type air-packing device forms different shapes of the accommodating space.

In addition, the bent seams 104 do not separate the adjacent sub-inflatable cells 111, that is, at least one communication passage 112 is formed between the adjacent sub-inflatable cells 111, so that air enters each sub-inflatable cell 111 through the communication passages 112 when inflated. In the example shown in the drawings, the center portion between the adjacent sub-inflatable cells 111 is provided with the bending seams 104 formed by heat sealing, and the communication passages 112 are formed on both sides of the bending seams 104. In another embodiment, the two end portions of the sub-inflating unit 111 may be heat-sealed to form the bending seams 104, and the middle portion may form the communicating passage 112.

In this preferred embodiment of the present invention, the air-filled cushion unit 10 is formed by dividing each of the air cells 11 to form a bottom side wall 10a, a rear side wall 10b, an upper left side wall 10c, a lower left side wall 10d, an upper right side wall 10e, and a lower right side wall 10 f. It is worth mentioning that in this preferred embodiment of the present invention, the end portion of the rear side wall 10b is continuously bent downward to form two layers of the air cells, and the left upper side wall 10c and the right upper side wall 10e are also correspondingly bent downward to form two layers of the air cells, thereby providing a double air buffering effect. Or, said, in this preferred embodiment of the present invention, the top end portion of the inflatable cushion unit 10 is bent downward to form a top side wall 10g, and a superposed wall 10 h. The overlapping walls 10h are arranged in overlapping relation with the upper end portion of the rear wall 10b, the upper left side wall 10c, and the upper right side wall 10e, respectively, thereby achieving a double buffering effect. And when the article to be packaged is placed, the top of the article to be packaged is preferably contacted with the bottom end of the overlapped wall 10h, so that the article to be packaged is limited.

It is worth mentioning that the side walls of the inflatable cushioning units 10 in this preferred embodiment of the present invention are arranged to form a substantially right-angled receiving space for packaging the article to be packaged having a substantially right-angled shape.

As shown in the drawing, the left upper side wall 10c and the left lower side wall 10d are connected to each other by a folding unit 30. In this preferred embodiment of the present invention, when the left lower sidewall 10c and the left lower sidewall 10d are deformed by the folding of the folding unit 30 as viewed from the left side direction, the extending direction of the air cells of the left lower sidewall 10c and the left lower sidewall 10d is changed. Specifically, the lower left sidewall 10c includes one or more laterally extending sub-cells 111, and the upper left sidewall 10d includes one or more longitudinally extending sub-cells 111. Thus, on the left side of the air-packing device of the space folding type, the air cushions of two different structures, upper and lower, are formed, so that by changing the extending direction of the air cells, it is equivalent to providing a two-stage cushion structure in which one stage of cushion structure is formed by the longitudinal air cells and the other stage of cushion structure is formed by the lateral air cells. Thus, when the vehicle is impacted, particularly when the vehicle is impacted in the vertical direction, the two-stage buffer structure can enhance the buffer performance.

Similarly, the upper right sidewall 10e and the lower right sidewall 10f are also connected to each other by a folding unit 30. In this preferred embodiment of the present invention, when the right lower sidewall 10e and the right lower sidewall 10f are deformed by the folding of the folding unit 30 as viewed from the right side direction, the extending direction of the air cells of the right lower sidewall 10e and the right lower sidewall 10f is changed. Specifically, the lower right sidewall 10e includes one or more laterally extending sub-cells 111, and the upper right sidewall 10f includes one or more longitudinally extending sub-cells 111. Thus, on the right side of the air-packing device of the space folding type, air cushions of two different structures, upper and lower, are also formed, so that by changing the extending direction of the air cells, it is equivalent to providing a two-stage cushion structure in which one stage of cushion structure is formed by the longitudinal air cells and the other stage of cushion structure is formed by the lateral air cells. Thus, when the vehicle is impacted, particularly when the vehicle is impacted in the vertical direction, the two-stage buffer structure can enhance the buffer performance.

It should be noted that, in the present invention, terms indicating orientations, such as "left", "right", "top", "bottom", "upper" and "lower", and the like, are used only for describing relative relationships and are not intended to limit the scope of the present invention.

That is, the introduction of the folding unit 30 can change the extending direction of the air cells, thereby providing a multiple buffering effect. It is worth mentioning that in the conventional air-packing bag, if one air cell is damaged and leaks air, the air cushion effect of the side wall where this air cell is located will be affected, however, in the air-packing device of the present invention, when one air cell 111 on one side surface is damaged, for example, one air cell 111 on the upper left side wall 10c is damaged and leaks air, on the same left side surface, the air cell 111 on the lower left side wall 10d still has the air cushion effect, so that the air cushion performance of the left side wall of the air-packing device is not greatly affected.

It is worth mentioning that due to the folding action of the folding unit 30, the overlapped folds 31 and 32 are sealed together, so that the sub-air cells 11 on both sides of these air cells 11 also form the left side walls 10c and 10d, and the right side walls 10e and 10f, respectively, due to the pulling action of the folding unit 30.

In addition, the provision of the folding unit 30 also serves to prevent air from flowing over a wide range. Specifically, in the conventional air-packing bag, since one air cell extends in only one direction in the entire conventional air-packing bag, for example, in the longitudinal direction to form the longitudinal air cell, when the conventional air-packing bag is impacted, the air in the air cell can flow in the entire longitudinal direction, so that the air-filling amount at a local position in the extending direction of the air cell is insufficient, thereby affecting the air cushioning effect of the entire air cell.

However, since the air-packing device of the space-folding type of the present invention is provided with the folding unit 30, for example, the folding unit 30 on the left side, the upper and lower sides on the left side form air-packing cells extending in the lateral and longitudinal directions, respectively, so that the air of the upper left side wall 10c does not easily flow into the lower left side wall 10d due to the blocking action of the folding unit 30 when an impact is applied. Similarly, the air of the lower left sidewall 10d is not easy to flow into the upper left sidewall 10c due to the blocking effect of the folding unit 30, so that the folding unit 30 functions to prevent the air from being distributed in different spaces, and thus the upper left sidewall 10c and the lower left sidewall 10d can both ensure sufficient inflation amount to achieve a better air buffering effect.

In this preferred embodiment of the present invention, taking the left side wall of the space-folding type air-packing device as an example, the folding unit 30 may be formed integrally with the left upper side wall 10c and the left lower side wall 10d, that is, may be formed by a series of folding and heat-sealing of the same air cells 11. Specifically, the air cells 11 on the left side of the air-packing device of the space folding type are divided into three parts, the sub-air cells 111 on the lower side form the lower left side wall 10d, the air cells 111 in the middle form the folding unit 30, and the sub-air cells 111 on the upper side form the upper left side wall 10 c. The plurality of sub-air cells 111 of the folding unit 30 each have one or more air blocking slits 105 to reduce the amount of inflation of each of the sub-air cells 111, thereby allowing the folding unit 30 to be easily folded with respect to the upper left sidewall 10c and the lower left sidewall 10d, thereby enabling a spatial configuration change of the entire space-folding type air-packing device. In the conventional air packing bag, different side walls can be formed only by providing the bending nodes, so that the types of shapes of the accommodating space formed by the different side walls are limited.

It is worth mentioning that the number, shape, size and position of the choke slits 105 in each of the sub-air chambers 111 of the folding unit 30 are not limited. For example, there may be a plurality of the air blocking slits 105 spaced apart from each other vertically arranged along the length direction of each of the sub-air cells 111, but the sub-air cells 111 are not completely sealed, so that the upper left sidewall 10c may still communicate with the lower left sidewall 10 d. In another modified embodiment, the one or more gas blocking slits 105 in each of the sub-air cells 111 are arranged at intervals from each other along a direction parallel to the longitudinal direction of each of the sub-air cells 111, thereby further dividing each of the sub-air cells 111 into a plurality of small-diameter inflated cells. That is, the folding unit 30 has small-diameter inflation cells with respect to the left upper side wall 10c and the left lower side wall 10d, which make the folding unit 30 easy to fold, as shown in fig. 8A. It will be appreciated by those skilled in the art that other arrangements and arrangements of the gas-blocking slits 105 are possible, as long as the amount of inflation of the inflatable folding units 30 is reduced to facilitate folding.

In this preferred embodiment of the present invention, the left side folding unit 30 may be located inside the left lower sidewall 10d or the left upper sidewall 10c, i.e., inside the accommodating space formed by the space folding type air-packing device, or may be located outside the left lower sidewall 10d or the left upper sidewall 10c, i.e., outside the space folding type air-packing device. However, since both the left lower side wall 10d and the left upper side wall 10c have the inflatable chambers in the left direction, the air cushioning property in the left direction is not affected.

The folding unit 30 on the right side and the upper right side wall 10e and the lower right side wall 10f have substantially the same structure as the folding unit 30 on the left side, and the upper left side wall 10c and the lower left side wall 10 d. So that the space-folding type air-packing device in this preferred embodiment of the present invention forms a substantially right-angled accommodating space 100. It is worth mentioning that both the upper left sidewall 10c and the upper right sidewall 10e may be formed by bending to include two layers of sub-air chambers 111. And are sewn together at their respective overlapping seams 106.

The air-packing device of this preferred embodiment of the present invention is adapted to pack the said articles to be packed having a substantially right-angled shape, and for example, in the example shown in FIG. 2, a printer may be packed by two of the air-packing devices of the said three-dimensional folding type. The two ends of the printer are positioned in the accommodating spaces 100 of the two air-packing devices, and each air-packing device can buffer and protect each side of the two ends of the printer. The space-folding type air-packing device of this preferred embodiment of the present invention forms the accommodating space 100 in a substantially right-angled shape so that each of the space-folding type air-packing devices can be closely attached to both ends of the printer, respectively, thereby providing a better air cushion effect to the printer. When the traditional air packaging bag is used for packaging, a larger gap is formed between the traditional air packaging bag and an object to be packaged, so that a good buffering effect cannot be provided.

It is worth mentioning that the three-dimensional foldable air-packing device of the preferred embodiment of the present invention can be placed in a packing box or a packing box after being packed with the printer, thereby facilitating transportation and storage. In addition, the present invention is equivalent to providing a new packing manner, only two ends of the printer need to be packed by the three-dimensional folding type air-packing device of the preferred embodiment of the present invention, and the whole printer does not need to be placed in an air-packing bag, thereby greatly saving packing materials and reducing packing cost.

Further, the above-described printer is only for example and not intended to limit the present invention, and the space-folding type air-packing device of the present invention can also be applied to packing various fragile and fragile articles to be packed which need to be buffered.

The space-folding type air-packing device of this preferred embodiment of the present invention can be prepared as follows. Which may be formed by a series of folds and seals of two air chamber layers 101 and 102 arranged one above the other. Each of the gas chamber layers 101 and 102 may be made of a flexible film material. Which forms a gas filling port 13 and a gas filling passage 14 by heat-sealing partially and at the boundary, etc., divides a gas filling cavity 12 formed by cell layers 101 and 102 into a plurality of air cells 11 by heat-sealing along a plurality of rows of dividing seams 103, and then forms a plurality of side walls of the space-folding type air-packing device by heat-sealing along a plurality of rows of partitions 104, each air cell 11 being divided into sub-cells 111 which communicate with each other. For example, in the above preferred embodiment, the bottom side wall 10a, the back side wall 10b, the top side wall 10g, and the overlapping wall 10h are formed by the first row of bending slits 1041, the second row of bending slits 1042, and the third row of bending slits 1043. The overlapping wall 10h is sealed together with the rear side wall 10b, the upper left side wall 10c and the upper right side wall 10e by one or more overlapping seams 106, respectively.

At a local position, the plurality of adjacent sub-air cells 111 are reduced in the amount of air inflation by the plurality of air blocking slits 105, thereby forming the folded unit 30, and the remaining sub-air cells 111 form the inflatable cushion unit 10. The folded unit 30 is folded and then sealed at an end near the opening by at least one positioning seam 107, that is, the portion of the folded unit 30 connected to the inflatable cushion unit 10 is sealed by the positioning seam 107. In the above preferred embodiment of the present invention, two of the folding units 30 are formed such that the air cell layers 101 and 102 form a left upper sidewall 10c, a left lower sidewall 10d, a right upper sidewall 10e, and a right lower sidewall 10f on both sides, respectively. So that the folding unit 30 is folded to generate various spatial configurations of the inflatable cushion unit 10 formed by the remaining sub-air chambers 111. An inflation valve 20 is also provided in each of said chambers 11, as will be further disclosed in the following description.

As shown in FIG. 6B, taking the left side of the air-packing device of the accordion type, each of the folding units 30 is folded along the folding line 113, and its outer side 311 is sealed with the outer side of the lower left sidewall 10d by the joining seam 114, and then the folded portion 31 and the lower left sidewall 10d are sealed with the folded portion 32 by the positioning seam 107, thereby maintaining the folded shape of the folding unit 30, so that the air-packing device of the accordion type of the present invention maintains a stable three-dimensional configuration.

The folding line 113 may be manually formed by a manufacturer, that is, the folding unit 30 is manually folded to form the folding portion 31 and the folding portion 32, and the folding line 113 is formed between the folding portions 31 and 32.

The joining seam 114 seals the outer side edge 311 of the folded portion 31 and the outer side edge of the left lower side wall 10d, so that the air cell extending direction of the left upper side wall 10c and the left lower side wall 10d is changed. The folded shape is further stabilized by the sealing of the positioning slits 107. It is understood that the positioning seam 107 may also seal the left lower sidewall 10d and the folded portion 31 with the rear sidewall 10b and/or the left upper sidewall 10 c.

The extending directions of the air chambers of the upper left side wall 10c and the lower left side wall 10d are different, so that a two-stage buffer structure is formed on the left side, and the buffer performance is enhanced. When the space is momentarily compressed to flow and distribute inside the air cells when the space-folding type air-packing device is dropped or impacted, and because of the reinforcing effect of the positioning slits 107 and the existence of the folding lines 113, the folding units 30 prevent the distribution of air between the upper left side wall 10c and the lower left side wall 10d when the upper left side wall 10c and the lower left side wall 10d are impacted, so that the upper left side wall 10c and the lower left side wall 10d respectively maintain a sufficient amount of air so as not to affect the inflating cushioning performance of the upper left side wall 10c and the lower left side wall 10 d.

It is worth mentioning that the size and position of the engaging seam 114 and the positioning seam 107 also determine the size and position of the folding unit 30, so that the respective sizes of the upper left side wall 10c and the lower left side wall 10d can be adjusted as required, and thus the inflation amount and size of the upper left side wall 10c and the lower left side wall 10d can be adjusted, so that different cushioning structures can be formed on the upper left side and the lower left side to provide different multi-stage cushioning effects as required.

In addition, the barrier slits 116 may be provided at predetermined portions, and the sub-inflatable cells 111 that are not inflated may be formed at these predetermined portions. For example, when the overlapping wall 10h overlaps the upper end portion of the rear side wall 10b, one or more of the sub-inflatable cells 111 on both sides of the portion thereof overlapping the upper end portion of the rear side wall 10b may be provided with the blocking slits 116, thereby forming the sub-inflatable cells 111 that are not inflated. It is also convenient that the folded wall 10h is folded to correspond to the upper left side wall 10c and the upper right side wall 10d, respectively.

It is worth mentioning that the plurality of air cells 11 may include a large diameter air cell and a small diameter air cell, as shown in fig. 7, the large diameter air cell may be obtained by increasing or decreasing the diameter of the air cell 11, the same number of the inflation valves 20 may be provided in each air cell 11, and the size of the separation slit 103 may be increased or decreased. The air chamber layers 101 and 102 can be divided into large-diameter air chambers with a plurality of inflation valves 20, when small-diameter air chambers are needed, a plurality of specific large-diameter air chambers are divided into small-diameter air chambers according to actual needs, and each small-diameter air chamber is provided with a small number of inflation valves 20. For example, the larger diameter chambers all have two such inflation valves 20, while the smaller diameter chambers have only one such inflation valve 20.

The large-diameter air cells and the small-diameter air cells of the plurality of air cells 11 may be alternately arranged, so that the air inflation amount is different at different portions, and multi-stage buffering may be formed. It is also possible to provide large-diameter air cells at some local positions, for example, to form large-diameter air cells 11' on both sides of the rear side wall 10b and the bottom side wall 10a of the space folding type air-packing device, so that the air-packing capacity is larger, and the width and thickness are larger. When the three-dimensional folding type air packaging device falls, the large-diameter air chamber 11 'contacts with the impact surface firstly to form first-stage air buffering, and then the large-diameter air chamber 11' contacts with the impact surface again to form second-stage buffering, so that the purpose of enhancing the buffering effect is achieved through two-stage buffering.

As shown in fig. 8C, according to another modified embodiment, each of the folded cells 30 may be of an uninflated structure, and the upper left side wall 10C and the upper right side wall 10e may communicate with the sub-inflating cell 111 forming the bottom side wall 10b through a communication passage 115 provided in the sub-inflating cell 111, so that, when inflated, the sub-inflating cells 111 of the lower left side wall 10d and the lower right side wall 10f may be inflated through the respective inflation valves 20 provided, and the upper left side wall 10C and the upper right side wall 10e may be inflated through the inflation valves 20 of the inflating cells 11 forming the bottom side wall 10a and the rear side wall 10 b.

The folding and heat-sealing of each of the folding units 30 of the uninflated structure may be similar to those of the above-described embodiment, thereby forming air cells having different extending directions on the left or right side to provide multi-stage cushioning.

Referring to FIGS. 9 to 11, there is shown a space-folding type air-packing device in accordance with a second preferred embodiment of the present invention which includes an air-packing unit 40 and two folding units 30. At least one inflation valve 20 is provided in the inflatable cushioning unit 40 and is adapted to interconnect with the folding unit 30 to form an inflatable cushioning package. The inflation valve 20 is used to inflate the inflatable cushion unit 40, so that the inflatable cushion unit 40 is adapted to provide an air cushion effect to the article to be packaged.

Specifically, in this preferred embodiment of the present invention, the air-packing unit 40 of the space-folding type air-packing device. Like the air-filled cushion unit 10 of the first embodiment of the present invention, it also includes a plurality of air cells 41, and a separation slit 403 is provided between adjacent air cells, and different side walls are formed by bending a plurality of rows of bending slits 404.

In addition, the side edges of the space-folding type air-packing device are connected together by end-seals 408 at both sides thereof, respectively. The end seals 408 may be continuous heat seal lines or intermittent node heat seal lines. Thus, more specifically, the air-packing device of the space-folding type in this preferred embodiment of the present invention forms an air-packing bag having a bottom wall 40a, and four peripheral walls 40b extending from the bottom wall 40a and having an opening on the other side with respect to the bottom wall 40 a.

The two folding units 30 are respectively located at two corners of the air-packing device of the space folding type, so that the air-packing device of the space folding type can be easily folded at the corners of the formed air-packing bag, and the formation of the space configuration is facilitated. Also, the bottom wall 40a may be arranged substantially at right angles to the four peripheral walls 40b, respectively, so that a regular rectangular or square receiving space 400 is formed between the bottom wall 40a and the four peripheral walls 40 b.

Each of the folding units 30 may be implemented by disposing a plurality of air blocking slits 405 in the corresponding sub-air cells 411, and the air blocking slits 405 reduce the amount of air filled in the corresponding sub-air cells 411, thereby facilitating the folding of the whole folding unit 30. The air-blocking slit 405 may be formed by heat sealing, for example, and the shape, size, position, etc. thereof are not limited, and may be a plurality of heat-sealing lines or blocks arranged in the transverse direction or the longitudinal direction, for example.

In addition, each of the folding units 30 extends between the corresponding peripheral wall 40b and the bottom wall 40a, and can be inserted into the accommodating space 400, or can extend outside the air-filled cushion unit 40, and the air-filled cushion bag formed by the air-packing device of the three-dimensional folding type has no influence on the air-filled cushion effect.

It is worth mentioning that, in this preferred embodiment of the present invention, taking the left peripheral wall 40b as an example, it has four of the sub-air cells 411 formed by heat-sealing and folding four of the air cells 41. More specifically, the middle section of the four air cells 41 forms the folding unit 30 because the air blocking slits 405 are provided, and the sub air cells on both sides of the middle section without the air blocking slits 405 form the left peripheral wall 40 b. The left peripheral wall 40b is sealed at its side edges by the end sealing seams 408, and the end sealing seams 408 simultaneously seal the side edges of the left peripheral wall with the folding unit 30, and the end sealing seams 408 may be implemented as continuous or intermittent heat sealing lines.

In addition, the folding unit 30 also forms the folded portions 31 and 32 by folding in half, one end of which forms a closed end and the other end of which forms a free end having an opening, and in this embodiment of the present invention, the free ends having an opening may not be sealed together by the positioning slit 107 as in the first embodiment described above.

In addition, according to a modified embodiment, as shown in FIG. 12, an additional functional layer 50 is provided inside or outside the space-folding type air-packing device, and the additional functional layer may be a film layer for cushioning or other functions such as heat insulation, sun protection, etc. to provide additional functions to the object to be packed. For example, the functional layer 50 may be made of paper material to form a packing case or a packing box, or other cushioning materials such as foaming materials. Specifically, in one particular example, the accordion folded air-packing device may be attached inside the functional layer 50 so that the functional layer 50 may be automatically unfolded when the accordion folded air-packing device is inflated. That is, the functional layer 50 may be a paper packing box, the foldable stereo air packing device is installed in the paper packing box, the paper packing box is folded when the foldable stereo air packing device is not inflated, and each air chamber of the foldable stereo air packing device is inflated when the foldable stereo air packing device is inflated, so that the folded paper packing box is spread to form a box body capable of accommodating articles.

In a preferred example, an inner bag layer composed of a flexible film is provided in the space-folding type air-packing device, the inner bag layer is provided in the accommodating space 400 after the space-folding type air-packing device is inflated to form the accommodating space 400, and the inner bag layer may be in contact with or not in contact with the bottom wall 40 a. Preferably, the inner bag layer is suspended in the accommodating space 400, so that the three-dimensional folding type air-packing device forms the outer bag layer, and the air in the gap between the two bag layers can also play a certain role in buffering, so that the two bag layers can provide better air buffering effect for the object to be packed.

As shown in fig. 13 and 14, according to another embodiment of the second preferred embodiment of the present invention, the folding units 30 are provided at opposite sides adjacent to the end of the opening, so that the inflatable chambers of the inflatable cushion units 40 at the other opposite sides are guided by the folding units 30 to seal the opening by pressing the folding units 30.

As shown in fig. 15, the inflation valve 20 is a one-way inflation valve including two sealing films 21 and 22 overlapped with each other and fixed between the two air chamber layers 101 and 102 to form a four-layer structure, and an inflation passage 24 is formed between the two sealing films 21 and 22. Accordingly, when the inflatable cushion unit 10 is inflated, the two sealing films 21, 22 are bonded together to seal the inflation channel of the air bag, thereby sealing air in the inflation cavity 12 of the inflatable cushion unit 10, and when the inflatable cushion unit 10 includes a plurality of inflatable cells 11, a plurality of inflation valves 20 are correspondingly disposed in the respective inflatable cells 11 to respectively seal air in the respective inflatable cells 11. Specifically, the first sealing film 21 is overlappingly bonded to the first air cell layer 101, and the second sealing film 22 is overlappingly bonded to the second air cell layer 102. When the inflation buffer unit 10 is inflated, air is introduced into the inflation channel 24 formed between the first sealing film 21 and the second sealing film 22. When the air bag is inflated, the first sealing film 21 and the second sealing film 22 are bonded to each other to seal the inflation channel 24 of the air bag. In addition, the air pressure in the air bag acts on the two sealing films 21 and 22, thereby ensuring that the two sealing films 21 and 22 are tightly bonded together to prevent air from leaking out of the air valve 20. That is, the gas valve is a one-way valve that only allows gas to enter the inflatable cushioning unit 10 while preventing gas from seeping back out.

The formation of the inflation channel 24 of the inflation valve 20 can be achieved by providing a blocking means between the two sealing films 21 and 22, and when the two sealing films 21 and 22 are heat-sealed to the two cell layers 101 and 102, the two sealing films 21 and 22 are not completely heat-sealed together because of the provision of the blocking means, thereby forming the inflation channel 24. In one particular example, the barrier may be a high temperature resistant ink.

Referring to fig. 16 to 18B, there is shown an air bag apparatus according to another embodiment of the present invention, which mainly illustrates the structure of another air valve 20A, the air valve 20A being a double check valve to provide a double sealing effect to the air bag. Wherein the air charge valve 20A includes a first packing film 21A, a second packing film 22A and a non-return packing film 23A.

The first sealing film 21A and the second sealing film 22A are overlapped between the first air cell layer 101A and the second air cell layer 102A of the inflator 11A. The first sealing film 21A and the second sealing film 22A are two thin flexible films made of plastic that are overlapped with each other. Preferably, the first sealing film 21A and the second sealing film 22A are the same two-layer film.

Each of the first sealing membrane 21A and the second sealing membrane 22A has a proximal edge extending to the inlet of the inflation valve 20A of the inflation unit 11A, and a distal edge extending to the interior of the inflation unit. Preferably, the borders of the proximal and distal edges of the first sealing film 21A and the second sealing film 22A are respectively contiguous.

In this embodiment, the near edge of the first sealing film 21A is bonded to the first chamber layer 101A. The proximal edge of the second sealing film 22A is bonded to the second air chamber layer 102A.

The non-return packing film 23A overlaps the proximal ends of the first packing film 21A and the second packing film 22A to form an inflation channel 24A between the first packing film 21A and the non-return packing film 23A and a non-return channel 25A between the non-return packing film 23A and the second packing film 22A.

The inflation channel 24A is arranged to inflate the inflation chamber 12A with air to fill the inflation cell 11A until distal ends of the first sealing membrane 21A and the second sealing membrane 22A are overlapped and sealed to close the inflation channel 24A by the air pressure within the inflation chamber 12A. According to the present preferred embodiment, when there is air leakage from between the distal ends of the first and second packing films 21A and 22A, as shown in fig. 10, the air in the inflation chamber 12 is introduced into the check passage 25A to generate the supplementary air pressure, thereby further sealing the inflation passage 24A to compensate for the insufficient sealing effect of the first and second packing films 21A and 22A.

The inflation channel 24A has two open ends, one of which is formed at a proximal open end at a proximal edge of the first packing film 21A and the non-return packing film 23A. The other of which extends distally open to the distal edges of said first sealing membrane 21A and said second sealing membrane 22A for communication with said inflation lumen 12A. Compressed air may be directed into the plenum chamber 12A through the plenum channel 24A.

It is worth mentioning that when the inflation unit 11A is filled with air, the air pressure in the inflation chamber 12A applies pressure to the first sealing film 21A and the second sealing film 22A, thereby sealing the distal edges of the first sealing film 21A and the second sealing film 22A and sealing the distal open ends of the inflation channels 24A. In addition, the distal ends of the first sealing membrane 21A and the second sealing membrane 22A are sealed together due to surface tension.

The non-return sealing film 23A is a thin flexible film made of plastic. Preferably, the non-return packing film 23A, the first packing film 21A and the second packing film 22A are Polyethylene (PE) films. In addition, the thickness of each of the first air cell layer 101A and the second air cell layer 102A is larger than the thickness of each of the first sealing film 21A, the second sealing film 22A and the non-return sealing film 23A.

According to a preferred embodiment of the invention, the length of the non-return sealing film 23A is smaller than the length of each of the first sealing film 21A and the second sealing film 22A, so that when the non-return sealing film 23A overlaps the proximal ends of the first sealing film 21A and the second sealing film 22A, the distal ends of the first sealing film 21A and the second sealing film 22A overlap. It is worth mentioning that the length of the non-return sealing film 23A is defined as the distance between the proximal and distal edges of the non-return sealing film 23A. The length of each of the first sealing film 21A and the second sealing film 22A is defined as a distance between a proximal edge and a distal edge of the first sealing film 21A and the second sealing film 22A.

Accordingly, the proximal edges of the first and second packing films 21A and 22A and the proximal edge of the non-return packing film 23A are adjoined. In addition, the proximal edge of the non-return packing film 23A is bonded to the proximal edge of the second packing film 22A.

The non-return passage 25A is formed between the non-return packing film 23A and the second packing film 22A, wherein the non-return passage 25A has an open end facing the inflation chamber 12A and a closed end facing the air valve opening. In other words, the proximal end of the check passage 25A is the closed end and the distal end of the check passage 25A is the open end.

Accordingly, when air is filled into the check passage 25A at the open end, the check passage 25A is filled with air to generate supplementary air pressure, thereby further sealing the air filling passage 24A between the first packing film 21A and the second packing film 22A.

It is worth mentioning that when the inflation chamber 12A is inflated through the inflation channel 24A, the air flow direction in the inflation channel 24A is opposite to the air flow direction of the check channel 25A. Therefore, air does not fill the check passage 25A. When air leaks back from the inflation lumen 12A to the check passage 25A, air enters the check passage 25A to create supplemental air pressure to further seal the inflation passage 24A, thereby preventing air leakage. It is worth mentioning that the leaking air flows from the distal open end of the inflation channel 24A to the distal open end of the check channel 25A before leaking from the proximal open end of the inflation channel 24A, thereby avoiding air leakage. In addition, the non-return packing film 23A and the first packing film 21A are sealed together by surface tension to seal the inflation channel 24A.

To form the inflation valve 20A at the inflation unit 11A, the inflation valve 20A further includes a first sealing joint 201 to bond the first air cell layer 101A and the first sealing film 21A together at the air valve opening of the inflation unit 11A, and a second sealing joint 202 to bond the second air cell layer 102A, the non-return sealing film 23A and the second sealing film 22A together at the air valve opening of the inflation unit 11A.

Accordingly, the proximal edge of the first sealing film 21A is bonded to the first air chamber layer 101A through the first sealing joint 201. The proximal edges of the second air cell layer 102A and the second sealant film 22A, and the proximal edges of the non-return sealant film 23A are bonded together by the second sealing joint 202A. Preferably, two spaced sealing joints 201A are used to bond the first air chamber layer 101A and the first sealing film 21A, and two spaced second sealing joints 202A are used to bond the second air chamber layer 102A, the non-return sealing film 23A and the second sealing film 22A. It should be noted that the first sealing joint 201A and the second sealing joint 202A may be heat sealing lines, or may be heat sealing in other shapes such as crescent shape. In other words, the proximal edge of the first sealing film 21A and the first chamber layer 101A are heat sealed together by the sealing joint 201A. The proximal edges of the second air cell layer 102A and the second sealant film 22A, and the proximal edge of the non-return sealant film 22 are heat sealed together by the second sealing joint 202A.

In order to maintain a space between the first packing film 21A and the non-return packing film 23A after the heat-sealing process, the inflation valve 20A further includes a first heat-resistant object 26A formed between the first packing film 21A and the non-return packing film 23A to ensure the formation of the inflation passage 24A. The first heat-resistant object 26A serves to prevent the first sealing film 21A and the non-return sealing film 23A from being completely stuck together after the heat-sealing process.

Specifically, the first heat-resistant object 26A is provided at the proximal edge portions of the first packing film 21A and the non-return packing film 23A at the air valve opening of the inflation unit 11A, thereby ensuring that the proximal end of the inflation passage 24A is in an open state.

Also, in order to maintain the space between the second packing film 22A and the non-return packing film 23A after the heat-sealing process, the inflation valve 20A further includes a second heat-resistant object 27A formed between the second packing film 22A and the non-return packing film 23A to ensure the formation of the non-return passage 25A.

Specifically, the second heat-resistant object 27A is provided at the distal edge portions of the second packing film 22A and the non-return packing film 23A, thereby ensuring that the distal end of the non-return passage 25A is in an open state. It is worth mentioning that the proximal end of the non-return channel 25A is closed by the second sealing joint 202.

According to the preferred embodiment, the first heat-resistant object 26A and the second heat-resistant object 27A are two heat-resistant layers, which are coated on the respective corresponding films at predetermined positions to prevent the films from sticking together during the sealing process. The first heat resistant substance 26A extends on the proximal side of the non-return packing film 23A and faces the first packing film 21A. The second heat-resistant mass 27A extends on the opposite side of the distal end of the non-return sealing film 23A and faces the second sealing film 22A, wherein the second heat-resistant mass 27A is not arranged on the opposite side of the proximal end of the non-return sealing film 23A, so that the proximal end of the non-return channel 25A can be closed by the second sealing joint 202A. It is worth mentioning that the second heat-resistant object 27A not only prevents the non-return packing film 23A from adhering to the second packing film 22A to ensure that the distal end of the non-return passage 25A is in the open state, but also reinforces the action between the non-return packing film 23A and the first packing film 21A to close the inflation passage 24A due to surface tension.

The inflation valve 20A further comprises two lateral sealing joints 203A, which are two third sealing joints to bond the first sealing film 21A and the non-return sealing film 23A to form the side walls of the inflation channel 24A. The width of the inflation channel 24A is defined by the two lateral sealing joints 203A. Specifically, the two lateral sealing joints 203A are two inclined heat sealing lines, so that the width of the inflation channel 24A decreases from the air valve opening to each inflation cavity. In other words, the proximal open end of inflation channel 24A is a larger open end that communicates with the valve opening, while the distal open end of inflation channel 24A is a tapered open end and communicates with inflation lumen 12A. The tapered inflation channel 24A further prevents air from leaking from the inflation lumen 12A to the air valve opening.

Preferably, the lateral sealing joint 203A extends from a proximal edge of the first sealing membrane 21A and the second sealing membrane 22A to a distal edge thereof. Therefore, the lateral seal joint 203A is located at the proximal end portions of the first and second packing films 21A and 22A and the non-return packing film 23A are bonded together. The lateral sealing joint 203A is located at a distal end portion of the first sealing film 21A and the second sealing film 22A, and is bonded to the first sealing film 21A and the second sealing film 22A.

Accordingly, in order to inflate the inflation unit 11A, a pump pin is inserted into the inflation port 13A to inflate the compressed air into the inflation channel 24A, wherein the inflation direction of the air is from the proximal open end to the distal open end of the inflation channel 24A. So that the inflation unit 11A starts inflating. The air pressure of the inflation chamber 12A increases to expand the first and second air chamber layers 101A and 102A. At the same time, the air pressure acts on the first sealing film 21A and the second sealing film 22A, in particular on the distal ends of the first sealing film 21A and the second sealing film 22A. When the inflation unit 11A is completely filled with air, i.e., reaches a maximum filling amount, the air pressure in the inflation chamber 12A reaches a pressure sufficient to seal the distal ends of the first sealing membrane 21A and the second sealing membrane 22A to automatically seal the distal open ends of the inflation channels 24A. The prongs of the pump are now drawn away from the inflation port 13A.

When the distal ends of the first sealing membrane 21A and the second sealing membrane 22A are not completely sealed together, air in the inflation cavity 12A may leak into the inflation channel 24A. In order to avoid air leakage to the inflation channel 24A, the non-return packing film 23A is sealed with the first packing film 21A to seal the distal open end of the inflation channel 24A. Specifically, the intake direction of the check passage 25A is opposite to the inflation direction of the inflation passage 24A. In addition, when the open end of the check passage 25A is open, the distal open end of the inflation passage 24A is closed. Therefore, air enters from the open end of the check passage 25A and remains in the check passage 25A.

The check passage 25A is filled with air so that supplemental air pressure is created within the check passage 25A to further seal the inflation passage 24A. In particular, the distal open end of the inflation channel 24A between the first sealing film 21A and the non-return sealing film 23A is sealed. More specifically, the higher the supplemental air pressure in the check passage 25A, the better the sealing effect of the check packing film 23A. In other words, when air leaks from the inflation chamber 12A to lower the air pressure of the inflation chamber 12A, air enters the check passage 25A to increase the air pressure of the check passage 25A. Therefore, the total air pressure of the inflation pressure, i.e., the sum of the air pressures of the inflation chamber 12A and the check passage 25A, remains unchanged. Thus, air entering the check passage 25A from the inflation chamber 12A enters to enhance the sealing effect of the inflation passage 24A.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (16)

1. A three-dimensional folding type air-packing device characterized by comprising:

the inflatable buffer unit is provided with at least one inflation valve to inflate the inflatable buffer unit, so that the inflatable buffer unit can play an air buffer role after being inflated; and at least one folding unit connected to the air-packing unit, wherein the folding unit is adapted to be folded so as to change a spatial configuration of the air-packing unit in space, the air-packing device includes a plurality of air cells, wherein the plurality of air cells are folded to form a plurality of sub-air cells from each air cell, wherein a portion of the sub-air cells form the folding unit and the remaining sub-air cells form the air-packing unit, the plurality of air cells are folded to form a plurality of side walls, the plurality of side walls include a bottom side wall, a rear side wall, an upper left side wall, a lower left side wall, an upper right side wall, and a lower right side wall, the folding unit is disposed between the upper left side wall and the lower left side wall, and the folding unit is also disposed between the upper right side wall and the lower right side wall, to form a rectangular-shaped receiving space, and a top side wall connected to the rear side wall, and a superimposed wall connected to the top side wall, the superimposed wall being arranged to overlap with the upper end portions of the upper left side wall, the upper right side wall, and the rear side wall, thereby forming a two-layer inflatable chamber structure.

2. The air-packing device of claim 1, wherein the folding unit is integrally connected to the air-packing unit.

3. The air-packing device of claim 1, wherein each of the sub-air cells of the folding unit is inflated by an amount smaller than that of the sub-air cells of the air-packing unit so that the folding unit is adapted to be folded.

4. The air-packing device of claim 1, wherein each of said sub-cells of said folding unit includes a plurality of small diameter inflatable cells, and each of said sub-cells of said air-packing unit is a large diameter inflatable cell with respect to said small diameter inflatable cells, so that said folding unit is easily folded with respect to said air-packing unit.

5. The air-packing device of claim 1, wherein a plurality of partial areas of each of the sub-air cells of the folding unit are heat-sealed to reduce the inflating amount of each of the sub-air cells of the folding unit.

6. A volumetric foldable air-packing device according to any of claims 1 to 5, wherein each of said folding units includes at least two folding portions which are overlapped with each other and sealed together by a positioning seam.

7. The air-packing device of claim 6, wherein the outer side edges of the left and right lower side walls are sealed to the outer side edge of one of the folded portions of the folding unit by a joining seam and to the other of the folded portions of the folding unit by a positioning seam.

8. The air-packing device of claim 7, wherein the positioning slits further seal the outer side edges of the left and right lower side walls to the rear side wall and/or the corresponding left and right upper side walls.

9. The air-packing device of claim 1, wherein the folding unit is an uninflated structure, and the upper left sidewall and the upper right sidewall are respectively communicated with the rear sidewall through communication passages.

10. The air-packing device of claim 7, wherein the air-packing device has a first air cell layer and a second air cell layer, and the air-packing valve is a one-way check valve and is disposed between the first air cell layer and the second air cell layer, and the one-way check valve is automatically closed when the air-packing cavity is filled with air, thereby preventing air leakage.

11. The air-packing device of claim 10, wherein the air-packing valve comprises two valve films heat-sealed to the first air cell layer and the second air cell layer of the air cell, respectively, an air inlet passage being formed between the two valve films, and inner surfaces of the two valve films are automatically sucked and adhered together after the air cell is inflated through the air inlet passage to prevent the gas introduced into the air cell from reversely permeating through the air inlet passage.

12. A foldable volumetric air-packing device comprising a first air cell layer and a second air cell layer, said first air cell layer and said second air cell layer being provided with at least one inflation valve therein and being formed into an inflatable foldable volumetric air-packing device having a plurality of air cells by a series of folding and heat-sealing, wherein said foldable volumetric air-packing device has at least one longitudinal air cell and at least one transverse air cell on at least one side surface thereof so as to provide two-stage air cushioning effects on said side surface, and a plurality of said air cells being bent to form a right-angled receiving space, wherein a plurality of said air cells comprises a plurality of side walls, a plurality of said side walls comprises a bottom side wall, a rear side wall, an upper left side wall, a lower left side wall, an upper right side wall, and a lower right side wall which are integrally connected, said foldable volumetric air-packing device further comprises a top side wall connected to said rear side wall, and a superimposed wall connected to the top sidewall, the superimposed wall being arranged in overlapping relation with upper ends of the upper left sidewall, the upper right sidewall and the rear sidewall to form a two-layer plenum structure.

13. The foldable air-packing device of claim 12, wherein a plurality of said longitudinal air cells form a longitudinal air cell side wall, a plurality of said transverse air cells form a transverse air cell side wall, and said longitudinal air cell side wall and said transverse air cell side wall are connected to a folding unit, wherein said folding unit is folded so that said longitudinal air cell side wall and said transverse air cell side wall extend in different directions.

14. The space-folding air-packing device of claim 13, wherein said longitudinal air cell walls, said lateral air cell walls and said folding unit are integrally formed by and communicate with a plurality of said air cells, said plurality of air cells are divided into three sections of sub-air cells, a middle section of sub-air cells forms said folding unit, and said longitudinal air cell walls and said lateral air cell walls are formed at both sides of said middle section of sub-air cells, respectively.

15. The space folding type air-packing device according to claim 14, wherein a plurality of partial areas of the sub-air cells of the folding unit are heat-sealed to prevent the air inflation so that the air inflation amount thereof is smaller than the air inflation amounts of the sub-air cells of the longitudinal air cell walls and the lateral air cell walls, thereby allowing the folding unit to be easily folded.

16. A foldable air-packing device according to claim 14, wherein each of the sub-air cells of the folding unit is provided with heat-sealing of a plurality of longitudinal air-blocking slits or transverse air-blocking slits so that the folding unit is easily folded.

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