WO2016169517A1 - 空气包装装置及其充气阀和制造方法 - Google Patents

空气包装装置及其充气阀和制造方法 Download PDF

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Publication number
WO2016169517A1
WO2016169517A1 PCT/CN2016/080032 CN2016080032W WO2016169517A1 WO 2016169517 A1 WO2016169517 A1 WO 2016169517A1 CN 2016080032 W CN2016080032 W CN 2016080032W WO 2016169517 A1 WO2016169517 A1 WO 2016169517A1
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WIPO (PCT)
Prior art keywords
membrane
film
valve
air
plenum
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PCT/CN2016/080032
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English (en)
French (fr)
Inventor
张嘉盈
聂会平
Original Assignee
上海艾尔贝包装科技发展有限公司
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Publication of WO2016169517A1 publication Critical patent/WO2016169517A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/03Wrappers or envelopes with shock-absorbing properties, e.g. bubble films
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/20Check valves specially designed for inflatable bodies, e.g. tyres

Definitions

  • This invention relates to packaging materials, and more particularly to an improved inflation valve for an air-packing device.
  • Inflatable air-packing device because it is filled with air inside, so it has strong cushioning performance, and it can be inflated during transportation, so it takes up little space. When used, it can be inflated and then packaged to be packaged, thus reducing transportation and storage. Cost, so this air-packing device has been widely welcomed in the market.
  • FIG. 1 to 2 illustrate the structure of a conventional air-packing device comprising two outer films 1A and 1B heat-sealed together, and two shorter inner films 2A and 2B, of which two inner films 2A and A plurality of inflation passages 2C are formed between 2B and can be automatically sealed after inflation is completed, and the air-packaging device is formed into a plurality of plenums 1C after heat-sealing with the two outer films 1A and 1B.
  • the two outer films 1A and 1B are then bent over a series of heat seals to form the inflatable structure into a variety of desired shapes for receiving the packaged article or as a filling material to provide an air cushioning effect to the packaged article.
  • the inflation valve is formed by two inner membranes 2A and 2B, as shown in Fig. 2, at the inlet end, the inner membrane 2A and the outer membrane 1A are heat-sealed together, the inner membrane 2B and the outer membrane 1B is heat-sealed together, and the two inner membranes 2A and 2B are not heat-sealed together due to the provision of the heat-resistant barrier means to form the inflation passage 2C.
  • the inflation passage 2C When inflated, when inflated, air reaches the inflation passage 2C from the main air passage 1D, and enters the corresponding plenum 1C from the inflation passage 2C.
  • the air in the plenum 1C reaches a predetermined pressure, the air in the air chamber 1C will be two layers.
  • the inner films 2A and 2B are pressed against the outer film 1A so that the two inner films 2A and 2B are attached to the same outer film 1C to achieve a self-sealing effect to prevent the air in the plenum 1C from leaking outward.
  • the structure of the existing inflation valve has a gas leakage hazard.
  • the inner membrane 2B and the outer membrane 1B are connected by heat sealing, and the thermal fusion bonding method causes the inner membrane 2B.
  • the outer film 1B causes the film to be hardened and embrittled at the heat-sealed position, so that the inner film 2B and the outer film 1B are fragilely connected, and when the plenum 1C has a large air pressure, the air may enter.
  • the air pressure acts on the inner membrane 2B
  • the three-layer film that is, 1A, 2A, and 2B are closely attached, so that air is not easily separated from the two inner membranes 2A and 2B.
  • the air between the inner film 2B and the outer film 1B is liable to leak due to the breakage of the heat fusion, so that the entire air-packing device is scrapped and cannot be used.
  • the main object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the air-packing device comprises a two-layer plenum membrane and an inflation valve, the inflation valve comprising a two-layer valve membrane forming an intake passage, and an additional A layer of reinforcing film disposed between the layer of the valve film and a layer of the chamber film to prevent the inflation valve and the chamber film from being torn.
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein at the end of inflation, two upper and lower valve films are attached to the lower air chamber membrane to prevent air leakage, wherein the reinforcing film is disposed on Air leakage occurs between the gas chamber membrane and the upper valve membrane to prevent breakage of the connection between the upper gas chamber membrane and the upper valve membrane.
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the reinforcing film is increased to increase the connection strength between the upper air chamber film and the upper valve film, thereby charging the air-filling unit
  • the reinforcing film is increased to increase the connection strength between the upper air chamber film and the upper valve film, thereby charging the air-filling unit
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the distal end portion of the reinforcing film is heat-sealed with the upper valve film, such that at the end of inflation, the reinforcing film The two-way valve film is adhered to the lower plenum film to achieve one-way inflation and self-sealing performance.
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the reinforcing film is shorter than the upper valve film and forms a reinforcing passage with the upper valve film, so that even if the air is reversed When oozing, entering the reinforcing passage between the upper valve membrane and the reinforcing membrane, thereby further pushing the upper portion
  • the valve membrane is attached to the lower valve membrane to further seal the intake passage between the upper and lower valve membranes.
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the reinforcing film further extends outwardly adjacent to a proximal end portion of the inlet of the intake passage, and can be combined with the lower chamber membrane
  • the intake main passage is formed such that the upper plenum film does not need to extend to be flush with the lower plenum membrane, which can save material of the upper plenum membrane, thereby saving cost.
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the diaphragms forming the inflation valve in the prior art are disposed between two outer membranes to form an inner membrane completely differently, and the present invention provides The reinforcing film is not completely disposed within the plenum film, but may act as a film that is exposed to the outside, so that the present invention provides completely different gas valve and air packaging structures.
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the air-packing device is suitable as an air cushioning material to provide a cushioning effect on an article supported thereby or to be filled into other packaging devices such as a package.
  • the air-packing device of the present invention is widely used, either in the package to provide cushioning protection for the packaged article, or the air-packing device is adapted to directly store the packaged article to provide a cushioning effect around the packaged article.
  • Another object of the present invention is to provide an air-packing device and an inflation valve thereof, wherein the air-packing device and the inflation valve are simple in structure and manufacturing process, low in cost and environmentally friendly, and are suitable for wide application in modern logistics packaging.
  • an air packaging device comprising:
  • An inflatable body comprising an upper plenum membrane and a lower plenum membrane superposed on each other to form at least one inflatable unit, each of the inflatable units having an plenum;
  • An inflation valve comprising an upper valve membrane, a lower valve membrane and a reinforcing membrane, wherein the upper valve membrane, the lower valve membrane and the reinforcing membrane and the upper plenum membrane and The lower plenum membrane is connected via a series of heat seals to form at least one intake passage between the upper and lower valve membranes, the intake passage for inflating the plenum, wherein after the inflation is completed, the upper a valve film and the lower valve film are attached to the lower plenum membrane to close the intake passage to achieve a self-sealing function, and the reinforced membrane is disposed on the upper valve membrane and the upper plenum membrane The strength between the upper valve membrane and the upper air chamber membrane is enhanced to prevent the upper valve membrane from being torn, thereby further preventing air leakage.
  • the upper air chamber membrane is adjacent to a proximal end of the upper valve membrane adjacent to an intake port of the intake passage And sealing a proximal end portion of the reinforced membrane together with a proximal end portion of the lower valve membrane adjacent to the intake port of the intake passage.
  • At least one of the two layers of the valve film is provided with a heat-resistant barrier on the inner surface of the valve film, and the heat-resistant barrier is disposed between the two layers of the valve film, thereby enabling heat sealing
  • the inlet passage is formed between the two layers of the valve membrane.
  • the gas barriers that heat seal the distal ends of the upper and lower valve membranes, the gas barriers preventing air in the plenum from being reverse osmosis from the intake passage.
  • the gas barrier further heat-connects the upper and lower valve membranes and the reinforcing membrane to the lower air chamber membrane, so that after the inflation is completed, the upper and lower valve membranes and the reinforcing membrane Attached to the lower plenum membrane to enclose the intake passage.
  • the two layers of the plenum film are two separate films or are formed by folding one sheet of film.
  • the air-packing device further forms a plurality of the inflation units through one or more separation slits, and at least one of the intake passages is formed in each of the inflation units.
  • the device wherein the gas chamber membrane and the valve membrane and the reinforcing membrane are flexible films selected from the group consisting of polyethylene film, polypropylene film, polyvinyl chloride film, polyester film, and polystyrene film And one or more of the composite films.
  • the air-packing device is further formed with a main passage communicating with the intake passage, and when inflated, air enters the main passage and is then distributed into the plenum of each of the inflatable units.
  • the main passage is formed between the upper and lower plenum membranes.
  • the main passage is formed between the upper and lower valve membranes.
  • the main passage is formed between the reinforcing film and the lower valve film.
  • the upper and lower valve membranes further comprise an outer extension extending adjacent a proximal end of the air inlet, the main passage being formed between the outer extensions, the upper and lower air chamber membranes not It is necessary to extend to the position of the outer extension of the upper and lower valve membranes.
  • the lower valve membrane further includes an outer extension extending adjacent a proximal end of the inlet, the reinforced membrane including a patch extending adjacent the proximal end of the inlet a strong extension, wherein the main passage is formed between the outer extension of the lower valve membrane and the reinforcing extension of the reinforced membrane, the upper plenum membrane need not extend to the The position of the reinforcing extension of the reinforced membrane.
  • the distal end portion of the reinforcing membrane is not aligned with the distal end portion of the upper valve membrane and is in the reinforcing membrane
  • a reinforcing passage is formed between the upper valve membrane and the upper valve membrane to further enhance the sealing action of the intake passage between the upper and lower valve membranes after the inflation is completed.
  • the air-packing device forms an inflatable cushion.
  • the air-packing device is formed into an air-packing bag having a receiving cavity after a series of heat sealing and bending.
  • an inflation valve adapted to inflate an air-packing device, the air-packing device comprising an inflatable body comprising a two-layer plenum film superposed on each other to Forming at least one inflating unit, each of the inflating units having an inflating chamber, wherein the inflating valve comprises two layers of a valve film and a reinforcing film, wherein the two layers of the valve film and the reinforcing film are
  • the two-layer plenum membrane is passed through a series of heat seals to form at least one inlet passage for inflating the plenum between the two layers of the valve membrane, and the two layers of the valve membrane are attached after the inflation is completed. Attached to one of the plenum membranes to enclose the inlet passage, the reinforced membrane is disposed between another plenum membrane and a layer of the valve membrane.
  • the two layers of the gas chamber membrane comprise an upper gas chamber membrane and a lower gas chamber membrane
  • the two layers of the valve membrane comprise an upper valve membrane and a lower valve membrane
  • the upper gas chamber membrane is adjacent to the inlet membrane a proximal end portion of the upper valve membrane of the air inlet of the air passage and a proximal end portion of the reinforcing film, the lower air chamber membrane and the air inlet adjacent to the intake passage
  • the proximal end portion of the lower valve membrane is heat sealed together, and the reinforcing membrane is disposed between the upper valve membrane and the upper plenum membrane to reinforce the upper valve membrane and the upper gas chamber The strength of the connection between the membranes prevents the upper valve membrane from being torn.
  • At least one of the inner surfaces of the valve film of the two layers of the valve film is provided with a heat resistant barrier, and the heat resistant barrier is placed between the two layers of the valve film, thereby making the heat In the sealing process, the inlet passage is formed between the two layers of the valve film of the two layers of the valve film.
  • the method further includes one or more gas barriers that heat seal the upper and lower valve membranes, the gas barriers preventing air in the plenum from being reverse osmosis from the intake passage.
  • the gas barrier further heat-connects the upper and lower valve membranes and the reinforcing membrane to the lower air chamber membrane, so that after the inflation is completed, the upper and lower valve membranes and the reinforcing membrane Attached to the lower plenum membrane to enclose the intake passage.
  • the distal end portion of the reinforcing membrane is not aligned with the distal end portion of the upper valve membrane and forms a reinforcing passage between the reinforcing membrane and the upper valve membrane, thereby further strengthening at the end of inflation
  • the sealing action of the inlet passage between the upper and lower valve membranes is followed.
  • the upper and lower valve membranes and the reinforcing film are flexible films selected from one of a polyethylene film, a polypropylene film, a polyvinyl chloride film, a polyester film, a polystyrene film, and a composite film or Several.
  • the air-packing device of the present invention has a manufacturing method comprising the following steps:
  • the upper and lower plenum films are arranged to overlap each other and a main passage for inflating each of the intake passages is formed between the upper and lower plenum membranes.
  • the outer extension of the upper and lower valve membranes extends to the outside of the upper and lower plenum membranes, and the outer extensions of the upper and lower valve membranes are arranged superposed on each other to form for each of the intake passages Inflated main channel.
  • the reinforcing extension of the reinforcing film is superposed with the lower plenum film to form a main passage for inflating each of the intake passages.
  • the reinforcing extension of the reinforcing membrane is superposed with the outer extension of the lower valve membrane to form a main passage for inflating each of the intake passages.
  • the manufacturing method further includes the steps of: heat sealing the five-layer film by a plurality of columns of spaced apart slits to form a plurality of the inflatable units, and forming at least one of the inflating units Air passage.
  • the manufacturing method further comprises the steps of: heat sealing the two layers of the gas chamber film by heat sealing of one or more columns of bending slits, and forming each of the gas cells to be interconnected and connected to each other.
  • a plurality of sub-inflating units are thereby bent along the bend slit such that the inflatable body forms a plurality of inflatable sidewalls that define a receiving cavity for receiving a packaged article.
  • the manufacturing method further includes the step of retracting a distal end portion of the reinforcing membrane with respect to a distal end portion of the upper valve membrane and at the reinforcing membrane and the upper valve membrane A reinforcing passage is formed therebetween to further enhance the sealing action of the intake passage between the upper and lower valve membranes after the end of inflation.
  • Figure 1 is a partial schematic view showing the structure of a prior art air-packing device.
  • FIG. 2 is a schematic cross-sectional view of an inflation valve of a prior art air-packing device.
  • FIG. 3 is a schematic structural view of an air-packing device in accordance with a preferred embodiment of the present invention.
  • Fig. 4A is a schematic cross-sectional view taken along line A-A of Fig. 3 of the inflation valve of the air-packing device according to the above preferred embodiment of the present invention.
  • Fig. 4B is a schematic cross-sectional view taken along line B-B of Fig. 3 of the inflation valve of the air-packing device according to the above preferred embodiment of the present invention.
  • 4C is a schematic cross-sectional view showing another modified embodiment of the inflation valve of the air-packing device according to the above preferred embodiment of the present invention.
  • Fig. 5 is a partially enlarged schematic cross-sectional view showing a portion of Fig. 4B of the inflation valve of the air-packing device according to the above preferred embodiment of the present invention.
  • Figure 6 is a schematic view showing the structure of an air-packing device according to the above preferred embodiment of the present invention when inflated.
  • Figure 7 is a schematic view showing the structure of the air-packing device according to the above preferred embodiment of the present invention after inflation.
  • Figure 8 is a perspective view showing the structure of an air-packing device in accordance with another preferred embodiment of the present invention.
  • Figure 9 is a schematic exploded view of an air-packing device in accordance with another preferred embodiment of the present invention.
  • Figure 10 is a cross-sectional view, taken along line C-C of Figure 9, of a modified embodiment of the inflation valve of the air-packing device in accordance with the above-described preferred embodiment of the present invention.
  • Figure 11 is a schematic cross-sectional view showing another modified embodiment of the inflation valve of the air-packing device according to the above preferred embodiment of the present invention.
  • Figure 12 is a schematic cross-sectional view showing another modified embodiment of the inflation valve of the air-packing device according to the above preferred embodiment of the present invention.
  • 3 to 7 are air-packing devices according to a preferred embodiment of the present invention, which have an inflatable structure to be used for various packaged articles such as electronic products, foods, medical products, chemical materials, etc. after inflation.
  • Biomaterials, plastic ceramics, fast-moving consumer goods, etc. provide air cushioning effect, and when not in use, they can be stored and transported without being inflated, and then inflated on site during use, which is very convenient to use.
  • the air-packing device may be embodied as an air cushioning material that, upon inflation, may form an inflatable cushion as shown in Figure 7 to provide an air cushioning effect to its support, or as The filling material is placed in other packaging devices such as cartons or boxes to provide an air cushioning effect on the packaged items.
  • the air-packing device comprises at least one inflatable body 10 comprising two layers of plenum membranes for forming at least one inflatable unit 13.
  • the air-packing device further includes at least one inflation valve 20 for inflating the inflation unit 13.
  • one of the two layers of the gas chamber film is defined as the upper chamber film 11, and the other layer is defined as the lower chamber film 12.
  • the upper and lower positional relationship of the upper and lower air chamber films 11 and 12 is opposite.
  • the upper air chamber film 11 may be located below the lower air chamber film 12.
  • the lower plenum film 12 may be located above the upper plenum film 11.
  • the gasification unit 13 is mainly formed by heat sealing of two gas chamber films, that is, an upper gas chamber film 11 and a lower gas chamber film 12, and the upper gas chamber film 11 and the lower gas chamber film 12 may be two flexible films. It can be made of various suitable film materials, such as polyethylene film, polypropylene film, polyvinyl chloride film, polyester film, polystyrene film or composite film. The invention is not limited in this respect as long as it is a suitable flexible film.
  • the upper plenum membrane 11 and the lower plenum membrane 12 overlap each other and are heat sealed to form a plenum 14 for storing air of the plenum unit 13.
  • the inflation valve 20 is for inflating the inflation unit 13, that is, when inflated, a gas such as air enters the inflation chamber 14 in each of the inflation units 13 from the inflation valve 20, when the inflation chamber 14 The air pressure in the middle reaches the requirement and stops the inflation. Thus the air-packing device is inflated so that an air cushioning effect can be provided.
  • the inflation valve 20 is a one-way inflation valve, that is, when inflated, when the air pressure in the plenum 14 reaches a predetermined level, the plenum
  • the air pressure in 14 causes the inflation valve 20 to be in a closed state, and can no longer continue to be inflated, and the air in the plenum 14 is also not easily leaked from the inflation valve 20.
  • the inflation valve 20 includes two layers of valve membranes 21 and 22 and at least one layer of reinforcing membrane 23.
  • the two layers of valve membranes 21 and 22 are defined as an upper valve membrane 21 and a lower valve membrane 22, respectively, wherein it will be understood by those skilled in the art that the upper and lower positional relationship of the upper and lower valve membranes 21 and 22 is relative.
  • the upper valve membrane 21 may also be located below the lower valve membrane 22, and the lower valve membrane 22 may also be located above the upper valve membrane 21.
  • the upper valve membrane 21 and the lower valve membrane 22 and the reinforcing membrane 23 may be three layers of flexible film, which may be made of various suitable film materials, such as polyethylene film, polypropylene film.
  • suitable film materials such as polyethylene film, polypropylene film.
  • the present invention is not limited in this respect, for example, a polyvinyl chloride film, a polyester film, a polystyrene film or a composite film, as long as it is a suitable flexible film.
  • the upper valve membrane 21 and the lower valve membrane 22 are superposed on each other, and are appropriately aligned with the upper plenum membrane 11 and the lower plenum membrane 12
  • a series of suitable heat seals 30 form an inflatable structure that is completed by a suitable heat sealing process to heat seal the two or more layers of film at the desired location.
  • the above five-layer film is heat-sealed to form an internal gas storage space, and forms a main passage 15 having an inflation port 151 into which the inflation nozzle 40 of the inflator enters the main passage from the inflation port 151. 15, whereby the inflatable body 10 is adapted to perform an inflation operation via the main passage 15.
  • the upper valve membrane 21 and the lower valve membrane 22 are stacked and heat sealed to form at least one intake passage 24, and an intake port 241 for inflation is formed at the intake end, wherein The intake passage 24 is in communication with the main passage 15.
  • an inflator 40 such as an air pump, from which air enters the main passage 15 from the inflation port 151 and from the main passage 15 enters the intake passage 24 via each of the intake ports 141, thereby inflating the inflator unit 13 such that each of the inflating chambers 14 is filled with a predetermined amount of air.
  • the heat seal 30 may comprise a plurality of spaced apart slits 31 such that two or more inflatable units 13 are arranged side by side and connected to form the inflatable body 10, wherein the inflatable The valve 20 is formed with the intake passage 24 corresponding to each of the inflatable units 13.
  • each The inflating unit 13 can be independently inflated, and the elongated slit 31 is formed between two adjacent inflating units 13 , which can be implemented as a heat sealing line between two adjacent inflating units 13 .
  • a plurality of individual plenums 14 can be formed by these dividing slits 31.
  • the other inflating units 13 can be unaffected.
  • the inflating units 13 can also communicate with each other such that only one of the intake passages 24 formed by the inflation valve 20 is required to inflate all of the inflating units 11. That is, the air-packing device of the present invention can form a plurality of the inflating units 13 by heat sealing of the upper air chamber film 11 and the lower air chamber film 12.
  • the inflation valve 20 forms a plurality of the intake passages 24 corresponding to the plurality of the inflatable units 13, that is, the partitioning slits 31 are heat-sealed in the two-layer air chamber film 11 and At 12 o'clock, the two layers of valve films 21 and 22 and the reinforcing film 23 are also heat sealed together, thereby heat sealing the five layers of film together to form a plurality of the inlet passages 24 and a plurality of the plenums 14, each of which The intake passage 24 is adapted to inflate a corresponding one of the plenums 14.
  • a plurality of spaced apart slits 31 may be arranged at equal intervals to form a plurality of the inflatable units 13 having the same diameter of the gas chamber, and of course may be arranged at unequal intervals to form a gas chamber.
  • the plurality of spaced apart slits 31 may be arranged in parallel with each other, or a predetermined number of the slits 31 may be arranged obliquely, or a turning or the like may be formed at a partial position, and the present invention is not limited in this respect.
  • One of the intake passages 24 may be formed in each of the inflating units 13, and in the inflating unit 13 having a larger chamber diameter, two or more of the intake passages 24 may be formed by a heat sealing process. , thereby improving the efficiency of inflation.
  • the inflating unit 13 may be in the form of a strip such as a lateral strip and/or a longitudinal strip or the like, or a block shape, the shape of which is not limited, and in this preferred embodiment, the inflating unit 13 may be formed in a strip shape.
  • the reinforcing film 23 is disposed between the upper air chamber film 11 and the upper valve film 21 to enhance the connection between the upper air chamber film 11 and the upper valve film 21. strength. More specifically, the upper valve membrane 21 has a proximal end portion 211 adjacent to the intake port 241 and a distal end portion 212 remote from the intake port 241. The reinforcing film 23 has a proximal end portion 231 at a position adjacent to the air inlet 241 and a distal end portion 232 remote from the air inlet 241.
  • proximal end portion 211 of the upper valve membrane 21 and the reinforcing membrane The proximal end portion 231 of the 23 is heat sealed with the upper plenum membrane 11, so that at the proximal end portion of the inflation valve 20, the connection strength of the upper plenum membrane 11 and the upper valve membrane 21 passes through The arrangement of the reinforcing film 23 is reinforced.
  • the three layers of films 11, 21 and 23 are heat sealed together, so that the upper plenum film 11 and the upper valve film 21 are not easily broken.
  • the reinforcing film 23 is reinforced between the upper valve film 21 and the upper plenum film 11 by reinforcing a layer, thereby making the connection between the two more stable.
  • the upper and lower sides of the proximal end portion 231 of the reinforcing film 23 are heat-sealed with the upper air chamber film 11 and the upper valve film 21, respectively, such that the reinforcing film 23 and the It is described that the connection between the gas chamber films 11 is reinforced by the upper valve film 21 on the bottom side thereof, thereby preventing breakage between the reinforcing film 23 and the upper gas chamber film 11.
  • the connection between the reinforcing film 23 and the upper valve film 21 is enhanced by the upper air chamber film 11 on its upper side, thereby preventing the reinforcing film 23 and the upper valve. A fracture occurs between the membranes 21.
  • the plenum film such as the lower plenum film 12
  • the plenum film is attached to one of the layers to enclose the intake passage 24 to prevent backflow of air from the intake passage 24.
  • the joint between the inner membrane 2B and the outer membrane 1B may be brittle, and air in the air column may also leak outward through the inner membrane 2B and the outer membrane 1B, resulting in loss of air cushioning performance.
  • the tear at the junction of the inner membrane causes air in the air column to leak through the air inlet passage between the two inner membranes.
  • the joint strength is enhanced, thereby further The airtight performance of the air-packing device is ensured.
  • the distal end portion 232 of the reinforcing film 23 and the distal end portion 211 of the upper valve film 21 are heat-sealed together, so that when the inflation is completed, air pressure acts on the reinforcing film 23, thereby The reinforcing film 23, the upper and lower valve films 21 and 22 are pressed together toward the lower plenum film 12, so that the four layers of film are laminated together to close the intake passage 24 to prevent air leakage.
  • the lower valve membrane 22 has a proximal end portion 221 and a distal end portion 222, the proximal end portion 221 of the upper valve membrane 22 and the lower portion
  • the gas chamber membrane 12 is heat sealed together, and the distal end portion 222 of the lower valve membrane 22 is joined to the distal end portion 332 of the reinforcing membrane 23 and the distal end portion 212 of the upper valve membrane 21 by the same heat seal. Yusho The plenum membrane 12 is described such that the upper and lower valve membranes 21 and 22 of the inflation valve 20 and the reinforced membrane 23 can be directed toward the same plenum after inflation is completed, i.e. toward the preferred embodiment.
  • the lower chamber membrane 12 is attached to achieve a gas lock-up performance by virtue of its own structure.
  • the reinforcing channel 25 is further preferably formed between the reinforcing film 23 and the upper valve film 21 to provide enhanced airtight performance. More specifically, as shown in FIG. 5, the intake passages 24 are arranged to charge the plenum 14 with air to fill the aeration unit 13 until the air pressure in the plenum 14 is passed through The distal ends 212 and 222 of the upper and lower valve membranes 21 and 22 overlap and seal to close the intake passage 24. According to the preferred embodiment, when there is a gas that is intended to leak outward, air enters the reinforcing passage from between the distal end portion 232 of the reinforcing membrane 23 and the distal end portion 222 of the upper valve membrane 22.
  • the length of the reinforcing film 23 may be smaller than the lengths of the upper valve film 21 and the lower valve film 22, so that when the reinforcing film 23 is overlapped with the upper valve film 21 and
  • the proximal end of the valve membrane 22 is described, the proximal end portion 231 of the reinforcing membrane 23 of the inflation valve 20 and the proximal end portions 211 and 221 of the upper and lower valve membranes 21 and 22 are superposed.
  • the distal end portions 212 and 222 of the upper valve membrane 21 and the lower valve membrane 22 may overlap, but the distal end portion 231 of the reinforcing membrane 23 is not associated with the upper valve membrane 21 and the lower valve membrane 22
  • the distal ends 212 and 222 are fully aligned and overlapped.
  • the length of the reinforcing film 23 is defined as the distance between the near edge and the far edge of the reinforcing film 23.
  • the length of each of the upper valve membrane 21 and the lower valve membrane 22 is defined as the distance between the proximal edge and the distal edge of the upper valve membrane 21 and the lower valve membrane 22.
  • the reinforcing passage 25 is formed between the reinforcing film 23 and the upper valve film 21, wherein the reinforcing passage 25 has an open end facing the plenum 14 and a closed The end is adjacent to the air inlet 241.
  • the proximal end of the reinforcing channel 25 is the closed end and the distal end of the reinforcing channel 25 is the open end.
  • the heat seal seam 30 further includes a sealing slit 32 which will be the upper air chamber film 11 and the reinforcing film 23 and the upper valve film 21
  • the proximal end portion 211 is heat sealed together and the lower plenum membrane 12 is heat sealed with the proximal end portion 221 of the lower valve membrane 22.
  • the sealing seam 32 can be formed by a primary heat sealing process, and the heat sealing connection of the five-layer film described above is completed by one heat sealing. Of course, one or more sealing seams 32 may be provided as needed.
  • the upper and lower valve films 21 and 22 are provided with a heat-resistant barrier 26 near the proximal end, so that the upper and lower valve films 21 and 22 are not sealed by this time.
  • the heat seals of the slits 32 are heat sealed together in a completely sealed manner, but are not heat sealed together due to the presence of the heat resistant barrier 26 so as not to close the air inlet 241, thereby forming the air inlet passage that can be inflated. twenty four.
  • the heat resistant barrier 26 may be taken out after the heat sealing is completed, or preferably, in the preferred embodiment, the heat resistant barrier 26 may be a silicone oil, a PVA, a high temperature resistant anti-stick ink, etc., and the printing thereof
  • the position of the viscous ink can be pre-corona treated to make the affliction of the refractory ink more stable.
  • the heat resistant barrier 26 does not need to extend completely to the distal ends 212 and 222 of the upper and lower valve membranes 21 and 22.
  • the upper and lower valve films 21 and 22 and the reinforcing film 23 are further heat-sealed together at the distal end by a gas barrier slit 33, and the gas barrier slit 33 further applies the upper and lower valve films 21 and 22 and
  • the distal end portions 212, 222, and 232 of the reinforcing film 23 are heat-sealed to the lower plenum membrane 12 without being connected to the upper plenum membrane 11, so that after a predetermined pressure is reached in the plenum chamber 14, the air The effect of the pressure causes the three layers of films 21, 22 and 23 of the inflation valve 20 to be attached to the lower plenum film 12.
  • the shape of the gas barrier slit 33 can be various, and a bypass passage can be formed between the distal end portions 212 and 222 of the upper and lower valve films 21 and 22, so that the air of the plenum chamber 14 is not easily bypassed.
  • the gas barrier slit 33 enters the intake passage 24 formed by the high temperature resistant barrier 25. It will be understood by those skilled in the art that the gas barrier slits 33 are disposed only in a partial region of each of the gas inflating units 13 along the width direction thereof, and do not completely completely seal each of the gas inflating units 13 in the lateral direction. Causes no air intake.
  • the heat seal seam 30 further includes lateral seal seams 34 corresponding to both sides of each of the intake passages 24, the lower plenum membrane 12 and the upper and lower valve membranes 21 and 22, and the reinforced membrane 23 is heat sealed together to form the side walls of the intake passage 24.
  • the width of the intake passage 24 is defined by the two sides toward the sealing seam 34.
  • the two-way sealing slits 34 may be two inclined heat seal lines such that the width of the intake passage 24 decreases from the air inlet 241 to the plenum 14 .
  • the proximal open end of the intake passage 24 is a larger open end
  • the distal open end of the intake passage 24 is a tapered open end and is in communication with the plenum 14.
  • the tapered intake passage 24 further prevents air from leaking from the plenum 14 to the intake port 241.
  • the upper valve film 21 and the lower valve film 22 extend into the upper chamber film 11 and the lower gas chamber film 12.
  • the inflation valve 20 is further heat sealed to the upper plenum membrane 11 and the lower plenum membrane 12 through a joint slit 38, respectively.
  • the connecting seam 38 may be formed by one heat sealing, that is, the above five-layer film is subjected to a heat sealing pressing operation on the upper and lower sides thereof by a hot pressing die, so that the upper and lower chambers are on the upper and lower sides.
  • the air-packing device may include a row of the joint seams 38 arranged in a dot shape, each of the joint seams 38 being located at an end of a corresponding one of the respective print barriers 25.
  • the reinforcing film 23 may not extend into the main passage 15, such that the connecting slit 38 respectively presses the upper valve film 21 and the upper portion
  • the gas chamber film 11 is heat sealed and the lower valve film 22 and the lower gas chamber film 12 are heat sealed.
  • the reinforcing film 23 strengthens the connection strength of the lower valve film 22 and the lower plenum film 12.
  • the expansion of the upper and lower plenum films 11 and 12 may respectively pull the upper and lower valve films 21 and 22 together due to the arrangement of the joints 38. Expanded to facilitate opening of the air inlet 241.
  • the present invention also provides a manufacturing method comprising the steps of: stacking five layers of films on each other, wherein the first film and the fifth film form the upper gas chamber film 11 and the lower chamber film 12, the third layer film and the fourth layer film form the upper valve film 21 and the lower valve film 22, the second film forms the reinforcing film 23, and will be heat resistant a barrier 26 is disposed between the upper valve membrane 21 and the lower valve membrane 22; the five-layer film is formed by the heat sealing step to form the inflatable unit 13 having one or more inflatable and stored gases
  • the inflatable body 10 wherein the upper air chamber membrane 11 and the reinforcing membrane 23 and the proximal end portion 211 of the upper valve membrane 21 are heat sealed together by the sealing slit 32, and
  • the lower plenum membrane 12 is heat sealed with the proximal end portion 221 of the lower valve membrane 22 to form the intake passage 24 between the upper and lower valve membranes 21 and 22, when the inflation unit 13
  • the upper plenum 14 the upper
  • the inflatable body 10 being formed into a plurality of the inflatable units 13 arranged side by side by a heat sealing step at the dividing slit 31, each of the inflatable units 13 having a corresponding one.
  • the intake passages 24 are described so as to achieve mutual interference without being disturbed.
  • the entire inflatable body 10 has other boundary heat seals 35 and the like, and forms a main passage 15 and an inflation port 151, which is equivalent to forming a distribution passage.
  • the inflator of the inflator 40 enters the inflator 151, and air enters each of the intake passages 24 from the main passage 15 via the respective intake ports 241, thereby charging each of the inflating units 13 In the plenum 14 .
  • the same mold can be used for heat sealing molding in the heat sealing operation, or heat sealing operation in different molds in order.
  • the air-packing device is not only a filling material, but is formed by heat-sealing and bending the film to form the accommodating cavity 16, so that the packaged article can be directly accommodated in the accommodating cavity 16 Thereby the air-packing device is provided with an air cushioning effect around the packaged article for use as an air-packing bag.
  • the shape, size, and the like of the air-packing device can be designed as needed.
  • the air-packing device also includes an inflatable body 10 formed of two layers of the plenum films 11 and 12, and three inflatable valves formed by the valve films 21, 22 and 23 20.
  • the inflation valve 20 is for inflating each of the inflatable units 13 of the inflatable body 10.
  • the air-packing device can form a U-shaped package.
  • the examples presented herein are by way of example only and not limiting of the invention, and those skilled in the art can design other types of air bags having the receiving chamber 16 as desired.
  • the reinforcing membrane 23 further includes a reinforcing extension 233 extending at the proximal end 231 at the proximal end such that the reinforcing membrane 23 and the
  • the main passage 15 is formed between the plenum membranes 12 such that when inflated, air passes from the main passage 15 between the reinforced membrane 23 and the lower plenum membrane 12, and then through respective corresponding places.
  • the intake passage 24 enters the plenum 14 of each of the inflatable units 13.
  • the reinforcing film 23 has the reinforcing extension 233, the upper plenum film 11 can save a part of the material.
  • the reinforcing extension 233 is equivalent to being exposed to the outermost side, rather than being located inside the two layers of the plenum films 11 and 12 like the first embodiment described above. That is, the proximal end portion of the upper gas chamber membrane 11 is heat-sealed with the reinforcing membrane 23 and the upper valve membrane 21 and the proximal end portions 231 and 211 without extending to the reinforcing membrane 23 The position of the reinforcing extension 233 is described.
  • the extended section 233 of the reinforcing film 23 is overlapped with the proximal end portion of the lower plenum film 12.
  • Each of the inflatable units 13 of the inflatable body 10 has a plurality of bending slits 36, as shown in FIG. 11, each of the inflatable units 13 may have two bending slits 36, thereby
  • the inflation unit 13 is divided into three sub-inflating units 131 that are connected to each other and communicate with each other. It is worth mentioning that the positions of the bending seams 36 of the inflatable units 11 correspond to each other, that is, the inflatable body 10 is equivalent to having two rows of bent slits 36 arranged at intervals.
  • the bending slits 104 of the plurality of the inflatable units 13 are arranged along a straight line, but are not continuous, so that an inflatable side wall is formed between the adjacent two rows of the bending slits 104, so that the The air cushioning package forms a plurality of side walls that surround the bent to form the receiving cavity 16 for receiving the packaged article.
  • the inflatable body 10 has a plurality of rows of meandering slits 36 for bending, which can be arranged as node lines spaced apart from each other so that the inflatable units 13 can be bent along the rows of the slits 36.
  • the bending is performed such that the sub-inflating units 131 of the inflatable body 10 respectively form a plurality of plenum sidewalls.
  • the number of rows of the bend seams 36 of the inflatable body 10 can be set as desired to provide a desired number of the plenum sidewalls.
  • each of the bending slits 36 is disposed at an intermediate position of the corresponding inflating unit 13 and a predetermined interval is left between the two adjacent slits 31 to form adjacent sub-inflating
  • the communication passages 17 between the units 131 are such that when inflated, air entering the respective inflating units 13 from the respective intake passages 24 can be distributed to the respective sub-inflating units 131 of the same inflating unit 13 .
  • the bending slit 36 may not be disposed at an intermediate position of the corresponding inflating unit 13, but may be integrally formed with the dividing slit 31, and the communication passage 17 may be formed in the inflating unit 13 The middle position.
  • the inflatable side walls between the two rows of the bending slits 36 form a bottom side wall.
  • the front and rear side walls respectively form front and rear side walls, and the front and rear side walls are further heat-sealed by the end seals 37 on both sides, so that both sides of the inflatable body 10 are heat-sealed, thereby forming an open end.
  • the receiving chamber 16 is.
  • the end seals 37 may be continuous heat seals or spaced heat seals.
  • the end seal 37 may be disposed on the outermost slit 31 of the inflatable body 10, or the outermost slit 31 and the end seal 37 may be together in one heat seal. form.
  • the end seal 37 is also an additional heat seal that is distinct from the outermost slit 31.
  • the air-packing device can be used alone to provide an air cushioning effect to the packaged article. It can also be used in combination with other packaging devices such as a carton or a package, that is, the packaged article can be placed in the accommodating chamber 16 of the air-packing device, and then the air-packing device carrying the packaged article can be placed in another In the packaging box, thereby further providing protection for the packaged articles to facilitate storage and transportation of the packaged articles.
  • other packaging devices such as a carton or a package
  • the upper and lower valve membranes 21 and 22 of the inflation valve 20 further include outer extensions 213 and 223 that extend the proximal ends 211 and 221, respectively.
  • the main passage 15 may be formed between the outer extensions 213 and 223 such that the lengths of the upper and lower plenum films 11 and 12 are reduced.
  • each of said plenums 14 when each of said plenums 14 is inflated, air is only distributed between the two layers of said valve membranes 21 and 22, unlike in the prior art of Figures 1 and 2. It will first enter the main channel 1D between the two outer membranes 1A and 1B, and then enter the inflation passage 2C. In the present invention, the air enters only between the two layers of the valve films 21 and 22 without being affected by the two layers of the chamber films 11 and 12, and does not enter between the valve film and the chamber film. Guarantee the smoothness of the inflation.
  • the present invention The inflation valve 20
  • the two layers of the valve films 21 and 22 are only partially overlapped with the two layers of the chamber films 11 and 12. As shown in FIG. 11, the upper valve film 21 is partially overlapped with the upper plenum film 11, and the lower valve film 22 is partially overlapped with the second plenum film 22.
  • the plenum films 11 and 12 do not extend to the position of the main passage 15, but are folded from the partial position of the inflation valve 20 and then heat-sealed together. Since only one layer of the outer extensions 213 and 223 are respectively disposed on both sides of the main passage 15, when the air enters the main passage 15 during inflation, the two layers of the valve films 21 and 22 can be easily made. The extensions 213 and 223 expand to open the intake passage 24 into each of the inflatable units 13.
  • the two valve films 21 and 22 of the inflation valve 20 may be separate films which are superposed on each other and then heat sealed to form the main passage. 15 and the intake passage 24. It will be understood by those skilled in the art that the inflation valve 20 can also be formed by folding a single film. In each of the above preferred embodiments, the gas chamber films 11 and 12 may be separate films or may be formed by folding one film.
  • the main passage 15 may also be formed between the reinforcing film 23 and the lower valve film 22 such that the upper valve film 21 does not need to be exposed to the outside and saves material. That is, the reinforcing film 23 includes a reinforcing extension 231, and the lower valve film 22 includes an outer extension 223 formed in the reinforcing extension 231 of the reinforcing film 23 and the Between the outer extensions 223 of the lower valve membrane 22, thereby ensuring a smoothness of inflation.
  • the air needs to enter the main channel between the two outer films 1A and 1B first. 1D, then enter the inflation passage 2C.
  • the valve films 2A and 2B are both between the two outer films 1A and 1B, but at least one film of the inflation valve 20 may extend to be exposed to the gas chamber films 11 and 12
  • the exterior is external and can be used to form the main channel 15.
  • the joint slit 38 for facilitating opening of the intake port 241 between the upper and lower valve films 21 and 22 in the first embodiment may not be required.

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  • Engineering & Computer Science (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Bag Frames (AREA)

Abstract

一种空气包装装置及其充气阀和制造方法,该空气包装装置包括:一可充气主体(10),其包括互相叠合的一上气室膜(11)和一下气室膜(12),以形成至少一充气单元(13),各个充气单元(13)具有一充气室(14);以及一充气阀(20),其包括互相叠合的一上阀膜(21),一下阀膜(22)和一补强膜(23),其中上阀膜(21),下阀膜(22)和补强膜(23)与上气室膜(11)和下气室膜(12)经一系列热封连接以使上下阀膜之间形成至少一进气通道(24),进气通道(24)用于向充气室(14)充气,其中充气结束后,上阀膜(21)和下阀膜(22)贴附于下气室膜(12)以封闭进气通道(24)从而实现自封闭功能,并且补强膜(23)设置在上阀膜(21)和上气室膜(11)之间以增强上阀膜(21)和上气室膜(11)之间的连接强度从而防止上阀膜被撕裂。

Description

空气包装装置及其充气阀和制造方法 技术领域
本发明涉及包装材料,尤其涉及空气包装装置的改进的充气阀。
背景技术
充气式空气包装装置,因为其内部填充有空气,所以缓冲性能强,而且运输时可以不充气,从而占用空间小,在使用时可以现场充气后再包装待包装物品,从而减小了运输和储存成本,所以这种空气包装装置在市场上受到了广泛的欢迎。
图1至图2示意了现有的空气包装装置的结构,其包括热封在一起的两层外膜1A和1B,以及两层较短的内膜2A和2B,其中两层内膜2A和2B之间形成多个充气通路2C并且在充气完成后能自动密封,而且与两层外膜1A和1B经热封后使空气包装装置形成多个充气室1C。两层外膜1A和1B再经一系列热封而弯折使充气结构形成各种所需形状,从而用于容纳包装物品或者作为填充材料,为包装物品提供空气缓冲作用。
在这种现有技术中,充气阀由两层内膜2A和2B形成,如图2中所示,在进气端,内膜2A和外膜1A热封在一起,内膜2B和外膜1B热封在一起,并且两层内膜2A和2B之间因为设置耐热阻隔装置而没有热封在一起从而形成充气通路2C。充气时,充气时,空气从主气道1D到达充气通路2C,并从充气通路2C进入对应的充气室1C,当充气室1C中空气达到预定压力时,气室1C中的空气会将两层内膜2A和2B压向外膜1A从而使两层内膜2A和2B贴合在同一层外膜1C上实现自封闭效果,以防止充气室1C中的空气向外渗露。
然而,现有的这种充气阀的结构存在着漏气隐患,具体地,在进气端,内膜2B和外膜1B通过热封的方式连接在一起,热熔接的方式会使内膜2B和外膜1B在热封的位置产生薄膜变硬并且脆化,从而内膜2B和外膜1B是脆弱性连接,当所述充气室1C中具有较大的空气压力时,空气可能会进入内膜2B和外膜1B 之间将其连接处冲开而从内膜2B和外膜1B之间向外泄露,即内膜2B和外膜1B连接热封处存在被撕裂的风险,从而导致整个充气包装装置不能保压而丧失空气缓冲性能。
也就是说,在上述充气阀结构中,因为空气压力对内膜2B的作用,使得三层薄膜即1A,2A和2B紧密贴合在一起,从而空气不容易从两层内膜2A和2B之间,以及内膜2A和外膜1A之间向外泄露。但是内膜2B和外膜1B之间却容易因为热熔接的断裂而导致空气泄露,从而使整个空气包装装置报废而不能使用。
发明内容
本发明的主要目的在于提供一种空气包装装置及其充气阀,其中所述空气包装装置包括两层气室膜和充气阀,所述充气阀包括形成进气通道的两层阀膜,以及额外的一层补强膜,补强膜设置在一层阀膜和一层所述气室膜之间,从而防止所述充气阀与所述气室膜被撕裂。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中在充气结束时,上下两层阀膜贴附于下气室膜以防止空气泄露,其中所述补强膜设置在上气室膜与上阀膜之间以防止所述上气室膜与所述上阀膜之间的连接断裂而产生漏气。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中增加的所述补强膜使得所述上气室膜与所述上阀膜连接强度得到增强,从而在充气单元中充入空气时,空气进入所述上气室膜和所述补强膜之间或者所述补强膜与所述上阀膜之间时,因为所述补强膜两侧都有热封在一起的薄膜,从而所述补强膜与两层薄膜的连接处都不容易断裂。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中所述补强膜远端部与所述上阀膜热封在一起,这样,在充气结束时,所述补强膜随着两层所述阀膜贴合于所述下气室膜,从而实现单向充气和自封闭性能。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中所述补强膜比所述上阀膜短并且与所述上阀膜之间形成补强通道,这样,即使空气反渗时,会进入所述上阀膜与所述补强膜之间的所述补强通道,从而进一步地推压所述上 阀膜以贴合于所述下阀膜,从而起到进一步地对所述上下阀膜之间的所述进气通道的密封作用。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中所述补强膜邻近所述进气通道入口的近端部进一步地向外延伸,并且可以与所述下气室膜形成进气主通道,这样所述上气室膜不需要延伸至与所述下气室膜平齐,这样可以节省所述上气室膜的材料,从而节省成本。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中与现有技术中形成充气阀的膜片都设置在两片外膜之间以形成内膜完全不同,本发明的提供所述补强膜并没有完全地设置在所述气室膜之内,而是可以作为暴露在外面的薄膜,从而本发明提供了完全不同的气阀和空气包装结构。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中所述空气包装装置适合于作为空气缓冲材料,以对其所支撑的物品提供缓冲作用或填充到其他包装装置如包装盒或包装箱中以起到对包装物品的缓冲保护作用,或者所述空气包装装置适合于直接存储包装物品,以在所述包装物品周围提供缓冲效果,从而本发明的空气包装装置应用广泛。
本发明的另一目的在于提供一种空气包装装置及其充气阀,其中所述空气包装装置和所述充气阀的结构和制作工艺简单,成本低廉而且又环保,适合广泛应用于现代物流包装。
为达到以上目的,本发明提供一种空气包装装置,其包括:
一可充气主体,其包括互相叠合的一上气室膜和一下气室膜,以形成至少一充气单元,各个所述充气单元具有一充气室;以及
一充气阀,其包括互相叠合的一上阀膜,一下阀膜和一补强膜,其中所述上阀膜,所述下阀膜和所述补强膜与所述上气室膜和所述下气室膜经一系列热封连接以使所述上下阀膜之间形成至少一进气通道,所述进气通道用于向所述充气室充气,其中充气结束后,所述上阀膜和所述下阀膜贴附于所述下气室膜以封闭所述进气通道从而实现自封闭功能,并且所述补强膜设置在所述上阀膜和所述上气室膜之间以增强所述上阀膜和所述上气室膜之间的连接强度,以防止所述上阀膜被撕裂,从而进一步防止空气泄露。
优选地,所述上气室膜与邻近所述进气通道的进气口的所述上阀膜的近端部 和所述补强膜的近端部热封在一起,所述下气室膜与邻近所述进气通道的所述进气口的所述下阀膜的近端部热封在一起。
优选地,其中两层所述阀膜中至少一层所述阀膜内表面设置有一耐热阻隔物,且所述耐热阻隔物设置于两层所述阀膜之间,从而使得在热封工艺中,使得两层所述阀膜之间形成所述进气通道。
优选地,还包括将所述上下阀膜远端部热封连接的一个或多个阻气缝,所述阻气缝阻止所述充气室中空气从所述进气通道反渗。
优选地,所述阻气缝进一步地将所述上下阀膜和所述补强膜与所述下气室膜热封连接,从而使充气结束后,所述上下阀膜和所述补强膜贴附于所述下气室膜以封闭所述进气通道。
优选地,两层所述气室膜是两张独立的薄膜,或者由一张薄膜经对折而形成。
优选地,所述空气包装装置进一步地通过一个或多个分隔缝形成多个所述充气单元,每个所述充气单元中形成至少一所述进气通道。
优选地,装置,其中所述气室膜和所述阀膜和所述补强膜是柔性薄膜,其选自聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚酯薄膜、聚苯乙烯薄膜和复合薄膜中的一种或几种。
优选地,所述空气包装装置还形成有与所述进气通道相连通的主通道,充气时,空气进入所述主通道,然后分配进入各个所述充气单元的所述充气室。
优选地,所述主通道形成于所述上下气室膜之间。
优选地,所述主通道形成于所述上下阀膜之间。
优选地,所述主通道形成于所述补强膜和所述下阀膜之间。
优选地,所述上下阀膜进一步地包括延伸于邻近所述进气口的其近端部的外延伸段,在所述外延伸段之间形成所述主通道,所述上下气室膜不需要延伸至所述上下阀膜的所述外延伸段的位置。
优选地,所述下阀膜进一步地包括延伸于邻近所述进气口的其近端部的外延伸段,所述补强膜包括延伸于邻近所述进气口的其近端部的补强延伸段,其中在所述下阀膜的所述外延伸段和所述补强膜的所述补强延伸段之间形成所述主通道,所述上气室膜不需要延伸至所述补强膜的所述补强延伸段的位置。
优选地,所述补强膜的远端部未与所述上阀膜的远端部对齐并在所述补强膜 和所述上阀膜之间和所述上阀膜之间形成补强通道,从而进一步加强在充气结束后对所述上下阀膜之间的所述进气通道的密封作用。
优选地,所述空气包装装置形成充气缓冲垫。
优选地,所述空气包装装置经一系列热封和弯折后形成具有一容纳腔的空气包装袋。
根据本发明的另一方面,本发明提供一种充气阀,其适合于给空气包装装置充气,所述空气包装装置包括一可充气主体,其包括互相叠合的一两层气室膜,以形成至少一充气单元,各个所述充气单元具有一充气室,其中所述充气阀包括互相叠合两层阀膜和一层补强膜,其中两层所述阀膜和所述补强膜与所述两层气室膜通过一系列热封,使两层所述阀膜之间形成用于向所述充气室充气的至少一进气通道,并且在充气结束后两层所述阀膜贴附于其中一层所述气室膜以封闭所述进气通道,所述补强膜设置于另外一层气室膜和一层所述阀膜之间。
优选地,两层所述气室膜包括一上气室膜和一下气室膜,两层所述阀膜包括一上阀膜和一下阀膜,其中所述上气室膜与邻近所述进气通道的进气口的所述上阀膜的近端部和所述补强膜的近端部热封在一起,所述下气室膜与邻近所述进气通道的所述进气口的所述下阀膜的近端部热封在一起,并且所述补强膜设置在所述上阀膜和所述上气室膜之间以增强所述上阀膜和所述上气室膜之间的连接强度从而防止所述上阀膜被撕裂。
优选地,两层所述阀膜中至少一层所述阀膜的所述内表面设置有一耐热阻隔物,且所述耐热阻隔物置于两层所述阀膜之间,从而使得在热封工艺中,使得两层所述阀膜的两层所述阀膜之间形成所述进气通道。
优选地,还包括将所述上下阀膜热封连接的一个或多个阻气缝,所述阻气缝阻止所述充气室中空气从所述进气通道反渗。
优选地,所述阻气缝进一步地将所述上下阀膜和所述补强膜与所述下气室膜热封连接,从而使充气结束后,所述上下阀膜和所述补强膜贴附于所述下气室膜以封闭所述进气通道。
优选地,所述补强膜的远端部未与所述上阀膜的远端部对齐并在所述补强膜和所述上阀膜之间形成补强通道,从而进一步加强在充气结束后对所述上下阀膜之间的所述进气通道的密封作用。
优选地,所述上下阀膜和所述补强膜是柔性薄膜,其选自聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚酯薄膜、聚苯乙烯薄膜和复合薄膜中的一种或几种。
本发明的空气包装装置,其制造方法包括如下步骤:
(a)将五层薄膜互相叠合在一起,其中所述第一层薄膜和第五层薄膜形成上气室膜和下气室膜,第三层薄膜和第四层薄膜所述上阀膜和下阀膜,第二层薄膜形成补强膜,并且将耐热阻隔物置于所述上阀膜和下阀膜之间;以及
(b)藉由热封步骤使所述五层薄膜形成具有一个或多个可充气并且存储气体的充气单元的可充气主体,其中通过密封缝将其将所述上气室膜和所述补强膜以及所述上阀膜的近端部热封在一起,并且将所述下气室膜与所述下阀膜的近端部热封在一起,从而在所述上下阀膜之间形成所述进气通道,当所述充气单元的充气室中达到预定气压时,所述上下阀膜贴附于所述下气室阀膜从而封闭所述进气通道,所述补强膜增强所述上气室膜和所述上阀膜之间的连接强度以防止所述上阀膜被撕裂。
优选地,所述上下气室膜互相重叠地排列并且所述上下气室膜之间形成用于向各个所述进气通道充气的主通道。
优选地,所述上下阀膜的外延伸段延伸至所述上下气室膜的外部,并且将所述上下阀膜的外延伸段互相叠合地排列以形成用于向各个所述进气通道充气的主通道。
优选地,所述补强膜的补强延伸段与所述下气室膜叠合地排列以形成用于向各个所述进气通道充气的主通道。
优选地,所述补强膜的补强延伸段与所述下阀膜的外延伸段叠合地排列以形成用于向各个所述进气通道充气的主通道。
优选地,所述的制造方法还包括步骤:通过多列互相间隔的分隔缝将所述五层薄膜热封,以形成多个所述充气单元,各个所述充气单元中形成至少一所述进气通道。
优选地,所述的制造方法还包括步骤:通过一列或多列弯折缝的热封,将两层所述气室膜热封连接,并且使各个所述充气单元形成互相连接并且互相连通的多个子充气单元,从而沿着所述弯折缝弯折,使所述可充气主体形成多个充气侧壁,所述充气侧壁界定形成用于容纳包装物品的容纳腔。
优选地,所述的制造方法中还包括步骤:使所述补强膜的远端部相对于所述上阀膜的远端部缩进并在所述补强膜和所述上阀膜之间形成补强通道,从而进一步加强在充气结束后对所述上下阀膜之间的所述进气通道的密封作用。
附图说明
图1是是现有技术的空气包装装置的结构局部示意图。
图2是现有技术的空气包装装置的充气阀的截面示意图。
图3是根据本发明的一个优选实施例的空气包装装置的结构示意图。
图4A是根据本发明的上述优选实施例的空气包装装置的充气阀的沿图3中A-A线的截面示意图。
图4B是根据本发明的上述优选实施例的空气包装装置的充气阀的沿图3中B-B线的截面示意图。
图4C是根据本发明的上述优选实施例的空气包装装置的充气阀的另一种变形实施方式的截面示意图。
图5是根据本发明的上述优选实施例的空气包装装置的充气阀的图4B中A处截面局部放大示意图。
图6是根据本发明的上述优选实施例的空气包装装置的充气时的结构示意图。
图7根据本发明的上述优选实施例的空气包装装置的充气后的结构示意图。
图8根据本发明的另一个优选实施例的空气包装装置的立体结构示意图。
图9根据本发明的另一个优选实施例的空气包装装置的展开结构示意图。
图10是根据本发明的上述优选实施例的空气包装装置的充气阀的变形实施方式沿图9中C-C线截面示意图。
图11是根据本发明的上述优选实施例的空气包装装置的充气阀的另一种变形实施方式的截面示意图。
图12是根据本发明的上述优选实施例的空气包装装置的充气阀的另一种变形实施方式的截面示意图
具体实施方式
以下描述用于揭露本发明以使本领域技术人员能够实现本发明。以下描述中的优选实施例只作为举例,本领域技术人员可以想到其他显而易见的变型。在以下描述中界定的本发明的基本原理可以应用于其他实施方案、变形方案、改进方案、等同方案以及没有背离本发明的精神和范围的其他技术方案。
如图3至图7所示是根据本发明的一个优选实施例的空气包装装置,其具有可充气结构,以在充气后可以为各种包装物品如电子产品、食品、医药产品、化工原料、生物材料、塑料陶瓷、快速消费品等提供空气缓冲效果,而且在未使用时,可以不充气而方便存储和运输,在使用时再现场充气,从而使用非常方便。
在本发明的这个优选实施例中,所述空气包装装置可以实施为空气缓冲材料,其在充气后可以形成如图7所示的充气缓冲垫,从而为其支撑物提供空气缓冲效果,或者作为填充材料放置在其他包装装置如包装箱或包装盒中,以为包装物品提供空气缓冲效果。
具体地,所述空气包装装置包括至少一可充气主体10,所述可充气主体10包括两层气室膜,以用于形成至少一充气单元13。所述空气包装装置进一步地包括至少一充气阀20,以用于向所述充气单元13进行充气。为方便描述,两层所述气室膜中的一层所述气室膜定义为上气室膜11,另一层所述气室膜定义为下气室膜12。本领域技术人员应该可以理解的是,所述上下气室膜11和12的上下位置关系是相对的,在实际应用中,所述上气室膜11可能位于所述下气室膜12的下方,所述下气室膜12可能位于所述上气室膜11的上方。
所述充气单元13主要由两层气室膜即上气室膜11和下气室膜12经热封形成,所述上气室膜11和所述下气室膜12可以是两层柔性薄膜,其可以由各种合适的薄膜材料制成,如聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚酯薄膜、聚苯乙烯薄膜或复合薄膜等。本发明在这方面并不受到限制,只要是合适的柔性薄膜即可。所述上气室膜11和所述下气室膜12相互重叠并经热封后形成所述充气单元13的用于储存空气的充气室14。
所述充气阀20用于向所述充气单元13充气,即充气时,气体如空气从所述充气阀20中进入各个所述充气单元13中的所述充气室14,当所述充气室14中的气压达到要求后停止充气。这样所述空气包装装置呈充气状态,从而可以提供空气缓冲效果。
值得一提的是,在本发明的这个优选实施例中,所述充气阀20是单向充气阀,即在充气时,当所述充气室14中的气压达到预定程度后,所述充气室14中的气压会使所述充气阀20处于关闭状态,而不能再继续充气,并且所述充气室14中的空气也不容易从所述充气阀20泄露。
更具体地,所述充气阀20包括两层阀膜21和22和至少一层补强膜23。类似地,两层阀膜21和22分别定义为上阀膜21和下阀膜22,其中本领域技术人员应该可以理解的是,所述上下阀膜21和22的上下位置关系是相对的,在实际应用中,所述上阀膜21也可能位于所述下阀膜22的下方,所述下阀膜22也可能位于所述上阀膜21的上方。
类似地,所述上阀膜21和所述下阀膜22以及所述补强膜23可以是三层柔性薄膜,其可以由各种合适的薄膜材料制成,如聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚酯薄膜、聚苯乙烯薄膜或复合薄膜等,本发明在这方面也并不受到限制,只要是合适的柔性薄膜即可。
根据本发明的这个优选实施例,所述上阀膜21和所述下阀膜22互相叠合,并且与所述上气室膜11和所述下气室膜12经适当的排列后再经过一系列合适的热封缝30形成可充气结构,所述热封缝通过合适的热封工艺完成,以将两层或多层薄膜在需要的位置进行热封。
上述五层薄膜经热封后形成内部的可储气空间,并且形成一主通道15,其具有一充气口151,其中当有充气设备的充气嘴40从所述充气口151进入所述主通道15,从而所述可充气主体10适合于经由所述主通道15进行充气操作。
更具体地,所述上阀膜21和所述下阀膜22经叠合并热封后形成至少一进气通道24,并且在进气端形成用于充气的一进气口241,其中所述进气通道24和所述主通道15相连通。在充气时,使用者可以利用充气设备40如充气泵从所述充气口151向所述空气包装装置充气,这时空气从所述充气口151进入所述主通道15,并从所述主通道15经由各个所述进气口141进入所述进气通道24,从而向所述充气单元13进行充气,以使各个所述充气室14内充入预定量的空气。
值得一提的是,所述热封缝30可以包括多个互相间隔的分隔缝31,这样两个或多个充气单元13并排排列并且相连接以形成所述可充气主体10,其中所述充气阀20形成有对应每个所述充气单元13的所述进气通道24。换句话说,各 个所述充气单元13可以独立地充气,在相邻两所述充气单元13之间形成延长的所述分隔缝31,其可以实施为相邻两所述充气单元13之间的热封线,从而藉由这些分隔缝31可以形成多个单独的充气室14。这样在一个所述充气单元13被损坏而漏气时,其他的所述充气单元13可以不受影响。当然,值得一提的是,所述充气单元13也可以互相连通,这样只需要一个充气阀20形成的一个所述进气通道24,就可以对所有所述充气单元11充气。也就是说,本发明的所述空气包装装置可以通过所述上气室膜11和所述下气室膜12的热封形成多个所述充气单元13。
在这个优选实施例中,所述充气阀20对应多个所述充气单元13形成多个所述进气通道24,也即是说,所述分隔缝31在热封两层气室膜11和12时也一并热封两层阀膜21和22和补强膜23,从而将五层薄膜热封在一起而形成多个所述进气通道24和多个所述充气室14,每个所述进气通道24适合于向对应的所述充气室14进行充气。
值得一提的是,多个互相间隔的所述分隔缝31可以等间距地排列,以形成气室直径相同的多个所述充气单元13,当然也可以不等间距地排列,以形成气室直径不相同的多个所述充气单元13。多个互相间隔的所述分隔缝31可以互相平行地排列,也可能预定数目的所述分隔缝31倾斜地排列,或在局部位置形成转折等,本发明在这方面并不受到限制。各个所述充气单元13中可以形成一个所述进气通道24,在气室直径较大所述充气单元13中,也可能会经热封工艺而形成两个或多个所述进气通道24,从而提高充气效率。
另外,因为每所述充气单元13的形状在充气后可以变化,从而可充气主体10可以制成各种形状和尺寸。所述充气单元13可以是条状如横向条状和/或纵向条状等,或块状,其形状不受限制,在这个优选实施例中,所述充气单元13可以形成条状。
在本发明中,所述补强膜23设置在所述上气室膜11和所述上阀膜21之间,以增强所述上气室膜11和所述上阀膜21之间的连接强度。更具体地,所述上阀膜21具有邻近所述进气口241的近端部211,以及远离所述进气口241的远端部212。所述补强膜23在邻近所述进气口241的位置具有近端部231,以及远离所述进气口241的远端部232。其中所述上阀膜21的近端部211与所述补强膜 23的近端部231与所述上气室膜11热封在一起,从而在所述充气阀20的近端部,所述上气室膜11和所述上阀膜21的连接强度通过所述补强膜23的设置而得到加强。
也就说,在所述充气阀20的近端部,三层薄膜11,21和23热封在一起,从而所述上气室膜11和所述上阀膜21不容易断裂。所述上阀膜21和所述上气室膜11之间通过增强一层起到加强作用的所述补强膜23,从而使两者的连接更稳固。从另外一方面说,所述补强膜23的近端部231上下侧分别与所述上气室膜11和所述上阀膜21热封在一起,这样,所述补强膜23与所述上气室膜11之间的连接会由所述上阀膜21在其底侧起到加强稳固作用,从而防止所述补强膜23与所述上气室膜11之间产生断裂。而所述补强膜23与所述上阀膜21之间的连接会由所述上气室膜11在其上侧起到加强稳固作用,从而防止所述补强膜23与所述上阀膜21之间产生断裂。
在充气操作时,空气从所述进气口241经由所述进气通道24进入所述充气室14,当所述充气室24中达到足够大的气压时,两层所述阀膜21和22贴附于其中一层所述气室膜如所述下气室膜12,从而封闭所述进气通道24,以防止空气从所述进气通道24反渗。在现有技术中,内膜2B和外膜1B的连接处可能会产生脆裂,气柱内的空气还可能经由内膜2B和外膜1B之间向外泄露,导致失去空气缓冲性能。而且,当内膜2B和外膜1B的连接处发生撕裂后,内膜连接处的撕裂导致气柱内的空气会经由两层内膜之间的进气通路处泄漏。
而在本发明中,因为所述上阀膜21和所述补强膜23的近端部211和231都与所述上气室膜11热封在一起,从而增强了连接强度,从而进一步地保证了所述空气包装装置的气密性能。
另外,所述补强膜23的远端部232和所述上阀膜21的远端部211热封连接在一起,这样,在充气完成时,空气压力作用于所述补强膜23,从而将所述补强膜23,所述上下阀膜21和22一起压向所述下气室膜12,从而使四层薄膜叠合在一起而封闭所述进气通道24从而防止漏气。优选地,类似所述补强膜23和所述上阀膜21,所述下阀膜22具有近端部221和远端部222,所述上阀膜22的近端部221与所述下气室膜12热封在一起,所述下阀膜22的远端部222与所述补强膜23的远端部332和所述上阀膜21的远端部212通过同样的热封连接于所 述下气室膜12,从而使所述充气阀20的所述上下阀膜21和22以及所述补强膜23在充气完成后能够朝向同一气室膜地,即朝向这个优选实施例中的所述下室膜12贴合,以依靠自身结构实现锁气封闭性能。
根据本发明的这个优选实施例,所述补强膜23和所述上阀膜21之间进一步地优选地形成补强通道25,从而起到加强的气密性能。更具体地,如图5所示,所述进气通道24被排列成用于向所述充气室14充入空气以填充所述充气单元13,直至通过所述充气室14内的气压,使所述上下阀膜21和22的远端部212和222重叠并密封以关闭所述进气通道24。根据本优选实施例,当有气体想要向外泄露时,空气会从所述补强膜23的远端部232和所述上阀膜22的远端部222之间进入所述补强通道25,以产生补充气压,从而进一步密封所述进气通道24,以补偿所述上下阀膜21和22的密封效果的不足。也就是说,进入所述补强通道25的空气会进一步地施压给所述上下阀膜21和22,从而实现上下阀膜21和22之间的所述进气通道24的密封。
在这个实施例中,所述补强膜23的长度可以小于所述上阀膜21和所述下阀膜22的长度,从而当所述补强膜23重叠于所述上阀膜21和所述下阀膜22的近端时,所述充气阀20的所述补强膜23的近端部231和所述上下阀膜21和22的近端部211和221叠合在一起,所述上阀膜21和所述下阀膜22的远端部212和222可以重叠在一起,但所述补强膜23的远端部231未与所述上阀膜21和所述下阀膜22的远端部212和222完全对齐而重叠在一起。值得一提的是,所述补强膜23的长度定义为所述补强膜23的近边缘和远边缘之间的距离。各个所述上阀膜21和所述下阀膜22的长度定义为所述上阀膜21和所述下阀膜22的近边缘与远边缘之间的距离。
如图5所示,所述补强通道25形成于所述补强膜23与所述上阀膜21之间,其中所述补强通道25具有一开放端面向所述充气室14和一封闭端邻近所述进气口241。换句话说,所述补强通道25的近端为所述封闭端而所述补强通道25的远端为所述开放端。
值得一提的是,当通过所述进气通道24向所述充气室14内充气时,所述进气通道24内的空气流向与所述补强通道25的空气流向相反。因此,空气不会充入所述补强通道25。当空气从所述充气室14泄露回所述补强通道25时,空气 进入所述补强通道25以产生补充气压进一步密封所述进气通道24,从而防止从所述进气通道24漏气。
下面,进一步地说明上述五层薄膜之间的热封连接方式。如图4A,图4B和图5中所示,所述热封缝30进一步地包括密封缝32,其将所述上气室膜11和所述补强膜23以及所述上阀膜21的近端部211热封在一起,并且将所述下气室膜12与所述下阀膜22的近端部221热封在一起。所述密封缝32可以由一次热封工艺而形成,将通过一次热封,完成五层薄膜上述的热封连接方式。当然,根据需要,可能会提供一条或多条密封缝32。值得一提的是,在热封工艺中,所述上下阀膜21和22中在近端附近设置有耐热阻隔物26,从而所述上下阀膜21和22之间不会因为这次密封缝32的热封而完全密封地热封在一起,而是因为耐热阻隔物26的存在而不热封在一起从而不会关闭所述进气口241,从而形成能够充气的所述进气通道24。所述耐热阻隔物26可以在完成热封后取出,或者优选地,在这个优选实施例中,所述耐热阻隔物26可以是硅油、PVA、耐高温搞抗粘油墨等手段,其印刷在所述上下阀膜21和22中其中一层阀膜的内表面,如所述上阀膜21的内表面并且朝向所述下阀膜22地设置,并且其表面对应需要印刷如耐高温抗粘油墨的位置可以预先经过电晕处理,从而使所述耐高温油墨的粘贴更稳固。
值得一提的是所述耐热阻隔物26不需要完全延伸至所述上下阀膜21和22的远端部212和222。所述上下阀膜21和22以及所述补强膜23在远端进一步地通过阻气缝33热封连接在一起,并且所述阻气缝33进一步地将所述上下阀膜21和22以及所述补强膜23的远端部212、222和232与所述下气室膜12热封连接而不与上气室膜11连接,从而在所述充气室14内达到预定气压后,空气压力的作用使得所述充气阀20的这三层薄膜21、22和23贴附于所述下气室膜12。
所述阻气缝33的形状可以各式各样,并且可以使所上下阀膜21和22的远端部212和222之间形成迂回通道,这样所述充气室14的空气也不容易绕过所述阻气缝33进入由所述耐高温阻隔物25而形成的所述进气通道24。本领域技术人员可以理解的是,所述阻气缝33只在各个所述充气单元13沿着其宽度方向的局部区域设置,而不会完全将各个所述充气单元13沿横向方向完全密封从而导致不能进气。
所述热封缝30还包括对应于各个所述进气通道24两侧的侧向密封缝34,其将所述下气室膜12与所述上下阀膜21和22以及所述补强膜23热封在一起,从而形成所述进气通道24的侧壁。所述进气通道24的宽度由所述两侧向密封缝34界定。具体地,所述两侧向密封缝34可以为两倾斜热封线,从而所述进气通道24的宽度从所述进气口241向所述充气室14递减。换句话说,所述进气通道24的近开放端为一较大的开放端,而所述进气通道24的远开放端为一锥形开放端并与所述充气室14连通。所述锥形的进气通道24进一步避免空气从所述充气室14泄露到所述进气口241。
如图3和图4A中所示,在这个优选实施例中,所述上阀膜21和所述下阀膜22延伸进入所述上气室膜11和所述下气室膜12形成的所述主通道15中,所述充气阀20进一步地分别通过一连接缝38与所述上气室膜11和所述下气室膜12热封在一起。所述连接缝38可以是通过一次热封即可成形,也就是说通过热压模具将上述五层膜在其上下两侧执行热封压合操作,这样在上下两侧,所述上气室膜11和所述上阀膜21通过所述连接缝38热封接合在一起,所述下阀膜22和所述下气室膜12以及所述补强膜23也通过所述连接缝38热封接合在一起。而所述印刷阻隔物25延伸至与所述上下阀膜21和22边缘平齐,这样,在执行热封形成所述连接缝38的过程中,所述上下阀膜21和22不会热封在一起,从而不会影响所述进气口241的形成,以使所述主通道15和所述进气通道24相连通。如图3所示,所述空气包装装置可以包括一列呈点状排列的所述连接缝38,各个所述连接缝38位于对应的各个所述印刷阻隔物25的端部。
如图4C中所示,根据另外的变形实施方式,所述补强膜23可以没有延伸进入所述主通道15中,这样,所述连接缝38分别将所述上阀膜21和所述上气室膜11热封连接,和将所述下阀膜22和所述下气室膜12热封连接。所述补强膜23使得所述下阀膜22和所述下气室膜12的连接强度加强。
值得一提的是,当充气时空气进入所述主通道15,所述上下气室膜11和12膨胀会因为所述连接缝38的设置而相应地分别拉动所述上下阀膜21和22一起膨胀,从而方便打开所述进气口241。
为了制得所述空气包装装置,本发明还提供一种制造方法,其包括如下步骤:将五层薄膜互相叠合在一起,其中第一层薄膜和第五层薄膜形成所述上气室膜 11和所述下气室膜12,第三层薄膜和第四层薄膜形成所述上阀膜21和所述下阀膜22,第二层薄膜形成所述补强膜23,并且将耐热阻隔物26置于所述上阀膜21和所述下阀膜22之间;藉由热封步骤使所述五层薄膜形成具有一个或多个可充气并且存储气体的所述充气单元13的所述可充气主体10,其中通过所述密封缝32将其将所述上气室膜11和所述补强膜23以及所述上阀膜21的近端部211热封在一起,并且将所述下气室膜12与所述下阀膜22的近端部221热封在一起,从而在所述上下阀膜21和22之间形成所述进气通道24,当所述充气单元13的充气室14中达到预定气压时,所述上下阀膜21和22贴附于所述下气室阀膜12从而实现自封闭,所述补强膜23增强所述上气室膜11和所述上阀膜21之间的连接强度以防止空气从所述上气室膜11和所述上阀膜21之间泄露。
在这个优选实施例,还可能包括通过所述分隔缝31处的热封步骤使所述可充气主体10形成多个并排排列的所述充气单元13,各个所述充气单元13可以具有对应的所述进气通道24,从而实现互不干扰,单独充气。整个可充气主体10还有其他边界热封缝35等,并且形成主通道15及充气口151,所述主通道15相当于形成一个分配通路。当充气时,充气设备40的充气嘴进入所述充气口151,空气从所述主通道15经由各个所述进气口241进入各个所述进气通道24,从而充入各个所述充气单元13的所述充气室14中。另外,值得一提的是,在热封工艺中,热封操作中可以采用同一个模具一次热封成型,也可能按次序在不同模具中进行热封操作。
如图8至图10所示是根据本发明的另外一种优选实施例的空气包装装置及其充气阀20。在这个优选实施例中,所述空气包装装置不仅仅是一种填充材料,而是经过将薄膜的热封和弯折后形成容纳腔16,从而可以直接将包装物品容纳在所述容纳腔16从而所述空气包装装置得以在所述包装物品周围提供空气缓冲效果,从而作为空气包装袋使用。所述空气包装装置的形状和尺寸等可以根据需要而设计。
更具体地,类似地,所述空气包装装置也包括由两层所述气室膜11和12形成的可充气主体10,以及三层所述阀膜21、22和23形成的所述充气阀20,所述充气阀20用于向所述可充气主体10的各个所述充气单元13充气。
在图8和图9所示的例子中,所述空气包装装置可以形成一个U型包装袋, 本领域技术人员可以理解的是,这里所举的例子只作为示例而并不限制本发明,本领域技术人员可以根据需要设计具有所述容纳腔16的其他类型的空气包装袋。
在这个优选实施例中,如图10中所示,所述补强膜23在近端进一步地包括延伸于所述近端部231的补强延伸段233,这样所述补强膜23和所述下气室膜12之间形成所述主通道15,从而充气时,空气从所述补强膜23和所述下气室膜12之间的所述主通道15,然后经由对应的各个所述进气通道24进入各个所述充气单元13的充气室14。
因为所述补强膜23具有所述补强延伸段233,从而所述上气室膜11可以节省一部分材料。这样,所述补强延伸段233相当于可以在暴露在最外侧,而不是类似上述第一个实施例中位于两层所述气室膜11和12内部。即所述上气室膜11的近端部与所述补强膜23和所述上阀膜21和近端部231和211热封在一起,而不延伸至所述补强膜23的所述补强延伸段233的位置。所述补强膜23的所述延伸段233与所述下气室膜12的近端部相叠合。
所述可充气主体10的每个所述充气单元13分别具有多个弯折缝36,如图11中所示,每个所述充气单元13可以具有两个弯折缝36,从而将各个所述充气单元13分成三个互相连接并且互相连通的子充气单元131。值得一提的是,这些所述充气单元11的所述弯折缝36的位置对应,也就是说,所述可充气主体10相当于具有两列互相间隔地设置的弯折缝36,设置在多个所述充气单元13的所述弯折缝104沿着直线排列,但是并不是连续的,从而相邻两列所述弯折缝104之间形成一个可充气侧壁,从而使所述具有空气缓冲性能的包装盒形成了多个侧壁,这些侧壁包围出经弯折后形成所述容纳腔16,以用于容纳包装物品。也可以说,所述可充气主体10具有多列用于弯折的弯折缝36,其可以排列成互相间隔地设置的节点线,从而沿着这些列弯折缝36可以将这些充气单元13进行弯折,使所述可充气主体10的这些子充气单元131分别形成多个气室侧壁。本领域技术人员可以理解的是,所述可充气主体10的所述弯折缝36的列数可以根据需要设置,从而得到理想数量的所述气室侧壁。
进一步地,各个所述弯折缝36设置在对应的所述充气单元13的中间位置,并且与相邻的两个所述分隔缝31之间留有预定间隔,从而形成相邻所述子充气 单元131之间的连通通道17,这样在充气时,空气从各个所述进气通道24进入各个所述充气单元13时,可以分配至同一个所述充气单元13的各个所述子充气单元131。另外,所述弯折缝36也可以不设置在对应的所述充气单元13的中间位置,而是与所述分隔缝31一体地成形,而将所述连通通道17形成在所述充气单元13的中间位置。
另外,在这个优选实施例中,将所述可充气主体10沿两列所述弯折缝36弯折后,两列所述弯折缝36之间的充气侧壁形成底侧壁,而所述底侧壁两侧分别形成前后侧壁,所述前后侧壁进一步地通过两侧的端封缝37地热封,使所述可充气主体10两侧得以热封起来,从而形成了一端开口的所述容纳腔16。可以理解的是所述端封缝37可以连续的热封缝也可以是间隔的热封缝。所述端封缝37可以设置在所述可充气主体10的最外侧的所述分隔缝31上,也可以是最外侧的所述分隔缝31和所述端封缝37在一次热封中一起形成。或者,所述端封缝37也是区别于最外侧的所述分隔缝31的另外的热封缝。
所述空气包装装置可以单独使用,以用来给包装物品提供空气缓冲效果。也可以搭配其他包装装置如包装箱或包装盒使用,即包装物品可以放入所述空气包装装置的所述容纳腔16中,然后载有所述包装物品的所述空气包装装置再放入另外的包装箱中,从而进一步给包装物品提供保护的作用,以方便包装物品的存储和运输。
如图11所示是根据本发明的所述空气包装装置及其充气阀的另外的优选变形实施例。在这个实施例中,所述充气阀20的所述上下阀膜21和22进一步分别包括延伸其近端部211和221的外延伸段213和223。所述外延伸段213和223之间可以形成所述主通道15,从而所述上下气室膜11和12的长度得以减小。
在本发明的这个优选实施例中,向各个所述充气室14充气时,空气只在两层所述阀膜21和22之间进行分配,而不像图1和图2的现有技术中,会先进入两层外膜1A和1B之间的主通道1D,然后再进入充气通路2C。而在本发明中,空气只进入两层阀膜21和22之间,而不会受到两层气室膜11和12的影响,也不会进入某层阀膜与气室膜之间,从而保证充气的顺畅性。
更具体地,在本发明的这个优选实施例中,不像图1和图2的现有技术中,两层内膜2A和2B完全设置在两层外膜1A和1B之间,本发明的所述充气阀20 的两层所述阀膜21和22只是部分地与两层所述气室膜11和12相互叠合。如图11中所示,所述上阀膜21与所述上气室膜11部分地叠合,所述下阀膜22与所述第二气室膜22部分地叠合。
也就是说,在本发明中,所述气室膜11和12并没有延伸至所述主通道15的位置,而是从所述充气阀20的局部位置叠合后热封在一起。因为所述主通道15两侧分别只有一层所述外延伸段213和223,充气时空气进入所述主通道15后,可以较容易地使两层所述阀膜21和22的所述外延伸段213和223膨胀,从而打开进入各个所述充气单元13的所述进气通道24。
值得一提的是,在本发明的这个优选实施例中,所述充气阀20的两张阀膜21和22可以是独立的薄膜,其互相叠合后再经热封而形成所述主通道15和所述进气通道24。本领域技术人员可以理解的是,所述充气阀20也可以仅由一张薄膜经对折而形成。在上述各个优选实施例中,所述气室膜11和12可以是独立的薄膜,也可以是一张薄膜经对折而形成。
另外,参见图12,所述主通道15也可以形成在所述补强膜23和所述下阀膜22之间,这样所述上阀膜21不需要暴露在外部并节省材料。即所述补强膜23包括补强延伸段231,所述下阀膜22包括外延伸段223,所述主通道15形成在所述补强膜23的所述补强延伸段231和所述下阀膜22的所述外延伸段223之间,从而保证充气顺畅性。
值得一提的是,在图10至图12中所示的实施例中,不像图1和图2的现有技术中,空气需要会先进入两层外膜1A和1B之间的主通道1D,然后再进入充气通路2C。也不像现有技术中,气阀膜2A和2B都在两层外膜1A和1B之间,而是所述充气阀20至少一层膜可以延伸至暴露在所述气室膜11和12的外部,并且可以用于形成所述主通道15。而且,也可以不需要第一个实施例中用于方便打开所述上下阀膜21和22之间的进气口241的所述连接缝38。
本领域的技术人员应理解,上述描述及附图中所示的本发明的实施例只作为举例而并不限制本发明。本发明的目的已经完整并有效地实现。本发明的功能及结构原理已在实施例中展示和说明,在没有背离所述原理下,本发明的实施方式可以有任何变形或修改。

Claims (32)

  1. 一种空气包装装置,其特征在于,包括:
    一可充气主体,其包括互相叠合的一上气室膜和一下气室膜,以形成至少一充气单元,各个所述充气单元具有一充气室;以及
    一充气阀,其包括互相叠合的一上阀膜,一下阀膜和一补强膜,其中所述上阀膜,所述下阀膜和所述补强膜与所述上气室膜和所述下气室膜经一系列热封连接以使所述上下阀膜之间形成至少一进气通道,所述进气通道用于向所述充气室充气,其中充气结束后,所述上阀膜和所述下阀膜贴附于所述下气室膜以封闭所述进气通道从而实现自封闭功能,并且所述补强膜设置在所述上阀膜和所述上气室膜之间以增强所述上阀膜和所述上气室膜之间的连接强度以防止所述上阀膜被撕裂。
  2. 根据权利要求1所述的空气包装装置,其中所述上气室膜与邻近所述进气通道的进气口的所述上阀膜的近端部和所述补强膜的近端部热封在一起,所述下气室膜与邻近所述进气通道的所述进气口的所述下阀膜的近端部热封在一起。
  3. 根据权利要求2所述的空气包装装置,其中两层所述阀膜中至少一层所述阀膜内表面设置有一耐热阻隔物,从而使得在热封工艺中,使得两层所述阀膜之间形成所述进气通道。
  4. 根据权利要求3所述的空气包装装置,其中还包括将所述上下阀膜远端部热封连接的一个或多个阻气缝,所述阻气缝阻止所述充气室中空气从所述进气通道反渗。
  5. 根据权利要求4所述的空气包装装置,其中所述阻气缝进一步地将所述上下阀膜和所述补强膜与所述下气室膜热封连接,从而使充气结束后,所述上下阀膜和所述补强膜贴附于所述下气室膜以封闭所述进气通道。
  6. 根据权利要求1至5中任一所述的空气包装装置,其中两层所述气室膜是两张独立的薄膜,或者由一张薄膜经对折而形成。
  7. 根据权利要求1至5中任一所述的空气包装装置,其中所述空气包装装置进一步地通过一个或多个分隔缝形成多个所述充气单元,每个所述充气单元中形成至少一所述进气通道。
  8. 根据权利要求1至5中任一所述的空气包装装置,其中所述气室膜和所述阀膜和所述补强膜是柔性薄膜,其选自聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚酯薄膜、聚苯乙烯薄膜和复合薄膜中的一种或几种。
  9. 根据权利要求2至5中任一所述的空气包装装置,其中所述空气包装装置还形成有与所述进气通道相连通的主通道,充气时,空气进入所述主通道,然后分配进入各个所述充气单元的所述充气室。
  10. 根据权利要求9所述的空气包装装置,其中所述主通道形成于所述上下气室膜之间。
  11. 根据权利要求9所述的空气包装装置,其中所述主通道形成于所述上下阀膜之间。
  12. 根据权利要求9所述的空气包装装置,其中所述主通道形成于所述补强膜和所述下阀膜之间。
  13. 根据权利要求11所述的空气包装装置,其中所述上下阀膜进一步地包括延伸于邻近所述进气口的其近端部的外延伸段,在所述外延伸段之间形成所述主通道,所述上下气室膜不需要延伸至所述上下阀膜的所述外延伸段的位置。
  14. 根据权利要求12所述的空气包装装置,其中所述下阀膜进一步地包括延伸于邻近所述进气口的其近端部的外延伸段,所述补强膜包括延伸于邻近所述进气口的其近端部的补强延伸段,其中在所述下阀膜的所述外延伸段和所述补强膜的所述补强延伸段之间形成所述主通道,所述上气室膜不需要延伸至所述补强膜的所述补强延伸段的位置。
  15. 根据权利要求1至5中任一所述的空气包装装置,其中所述补强膜的远端部未与所述上阀膜的远端部对齐并在所述补强膜和所述上阀膜之间和所述上阀膜之间形成补强通道,从而进一步加强在充气结束后对所述上下阀膜之间的所述进气通道的密封作用。
  16. 根据权利要求1至5中任一所述的空气包装装置,其中所述空气包装装置形成充气缓冲垫。
  17. 根据权利要求1至5中任一所述的空气包装装置,其中所述空气包装装置经一系列热封和弯折后形成具有一容纳腔的空气包装袋。
  18. 一种充气阀,其适合于给空气包装装置充气,所述空气包装装置包括一可充气主体,其包括互相叠合的一两层气室膜,以形成至少一充气单元,各个所述充气单元具有一充气室,其特征在于,所述充气阀包括互相叠合两层阀膜和一层补强膜,其中两层所述阀膜和所述补强膜与所述两层气室膜通过一系列热封,使两层所述阀膜之间形成用于向所述充气室充气的至少一进气通道,并且在充气结束后两层所述阀膜贴附于其中一层所述气室膜以封闭所述进气通道,所述补强膜设置于另外一层气室膜和一层所述阀膜之间。
  19. 如权利要求18所述的充气阀,其中两层所述气室膜包括一上气室膜和一下 气室膜,两层所述阀膜包括一上阀膜和一下阀膜,其中所述上气室膜与邻近所述进气通道的进气口的所述上阀膜的近端部和所述补强膜的近端部热封在一起,所述下气室膜与邻近所述进气通道的所述进气口的所述下阀膜的近端部热封在一起,并且所述补强膜设置在所述上阀膜和所述上气室膜之间以增强所述上阀膜和所述上气室膜之间的连接强度以防止所述上阀膜被撕裂。
  20. 根据权利要求19所述的充气阀,其中两层所述阀膜中至少一层所述阀膜的所述内表面设置有一耐热阻隔物,从而使得在热封工艺中,使得两层所述阀膜的两层所述阀膜之间形成所述进气通道。
  21. 根据权利要求19所述的充气阀,其中还包括将所述上下阀膜热封连接的一个或多个阻气缝,所述阻气缝阻止所述充气室中空气从所述进气通道反渗。
  22. 根据权利要求21所述的充气阀,其中所述阻气缝进一步地将所述上下阀膜和所述补强膜与所述下气室膜热封连接,从而使充气结束后,所述上下阀膜和所述补强膜贴附于所述下气室膜以封闭所述进气通道。
  23. 根据权利要求19至22中任一所述的充气阀,其中所述补强膜的远端部未与所述上阀膜的远端部对齐并在所述补强膜和所述上阀膜之间形成补强通道,从而进一步加强在充气结束后对所述上下阀膜之间的所述进气通道的密封作用。
  24. 根据权利要求19至22中任一所述的充气阀,其中所述上下阀膜和所述补强膜是柔性薄膜,其选自聚乙烯薄膜、聚丙烯薄膜、聚氯乙烯薄膜、聚酯薄膜、聚苯乙烯薄膜和复合薄膜中的一种或几种。
  25. 一种空气包装装置的制造方法,其特征在于,包括如下步骤:
    (a)将五层薄膜互相叠合在一起,其中所述第一层薄膜和第五层薄膜形成上气室膜和下气室膜,第三层薄膜和第四层薄膜所述上阀膜和下阀膜,第二层薄膜形成补强膜,并且将耐热阻隔物置于所述上阀膜和下阀膜之间;以及
    (b)藉由热封步骤使所述五层薄膜形成具有一个或多个可充气并且存储气体的充气单元的可充气主体,其中通过密封缝将其将所述上气室膜和所述补强膜以及所述上阀膜的近端部热封在一起,并且将所述下气室膜与所述下阀膜的近端部热封在一起,从而在所述上下阀膜和之间形成所述进气通道,当所述充气单元的充气室中达到预定气压时,所述上下阀膜和贴附于所述下气室阀膜从而封闭所述进气通道,所述补强膜增强所述上气室膜和所述上阀膜之间的连接强度以防止所述上阀膜被撕裂。
  26. 根据权利要求25所述的制造方法,其中所述上下气室膜互相重叠地排列并且所述上下气室膜之间形成用于向各个所述进气通道充气的主通道。
  27. 根据权利要求25所述的制造方法,其中所述上下阀膜的外延伸段延伸至所述上下气室膜的外部,并且将所述上下阀膜的外延伸段互相叠合地排列以形成用于向各个所述进气通道充气的主通道。
  28. 根据权利要求25所述的制造方法,其中所述补强膜的补强延伸段与所述下气室膜叠合地排列以形成用于向各个所述进气通道充气的主通道。
  29. 根据权利要求25所述的制造方法,其中所述补强膜的补强延伸段与所述下阀膜的外延伸段叠合地排列以形成用于向各个所述进气通道充气的主通道。
  30. 根据权利要求25所述的制造方法,还包括步骤:通过多列互相间隔的分隔缝将所述五层薄膜热封,以形成多个所述充气单元,各个所述充气单元中形成至少一所述进气通道。
  31. 根据权利要求25所述的制造方法,还包括步骤:通过一列或多列弯折缝的热封,将两层所述气室膜热封连接,并且使各个所述充气单元形成互相连接并且互相连通的多个子充气单元,从而沿着所述弯折缝弯折,使所述可充气主体形成多个充气侧壁,所述充气侧壁界定形成用于容纳包装物品的容纳腔。
  32. 根据权利要求25所述的制造方法,其中还包括步骤:使所述补强膜的远端部相对于所述上阀膜的远端部缩进并在所述补强膜和所述上阀膜之间形成补强通道,从而进一步加强在充气结束后对所述上下阀膜之间的所述进气通道的密封作用。
PCT/CN2016/080032 2015-04-23 2016-04-22 空气包装装置及其充气阀和制造方法 WO2016169517A1 (zh)

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