WO2013157509A1 - Dispositif de valve de non-retour - Google Patents

Dispositif de valve de non-retour Download PDF

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Publication number
WO2013157509A1
WO2013157509A1 PCT/JP2013/061150 JP2013061150W WO2013157509A1 WO 2013157509 A1 WO2013157509 A1 WO 2013157509A1 JP 2013061150 W JP2013061150 W JP 2013061150W WO 2013157509 A1 WO2013157509 A1 WO 2013157509A1
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WO
WIPO (PCT)
Prior art keywords
film
flow path
bag
heat
bent flow
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PCT/JP2013/061150
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English (en)
Japanese (ja)
Inventor
克敏 吉房
宏恭 吉房
Original Assignee
Ｇ．Ｅ．Ｓ．株式会社
エアーピエンシーインコーポレーテッド
ソン ジェード
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Application filed by Ｇ．Ｅ．Ｓ．株式会社, エアーピエンシーインコーポレーテッド, ソン ジェード filed Critical Ｇ．Ｅ．Ｓ．株式会社
Priority to JP2014511204A priority Critical patent/JP6038891B2/ja
Publication of WO2013157509A1 publication Critical patent/WO2013157509A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D81/00—Containers, 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
    • B65D81/02—Containers, 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
    • B65D81/05—Containers, 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 maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/051—Containers, 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 maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric
    • B65D81/052—Containers, 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 maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric filled with fluid, e.g. inflatable elements

Definitions

  • the present invention relates to a check valve device for automatically stopping gas discharge in a state where gas is filled in a bag portion made of a film that can be heat-sealed at least on one side, and in particular in a sealed state.
  • the present invention relates to a check valve device that can easily form a valve portion by heat-sealing (heat-sealing) the first film and the second film in a predetermined shape into a predetermined shape.
  • an air-injection type air cell cushioning material when manufacturing a packaging material having a cushioning function by air, an air-injection type air cell cushioning material is known, and this air-injection type air cell cushioning material heat-seals two films, A structure in which a large number of air cells are connected to each other is formed, and a simple air inlet is provided at the end. Usually, air is injected from the inlet at the end, and then the inlet is heat-sealed.
  • a special inlet check valve is attached to the end of the air introduction passage provided in front of the check valve portion, and each air cell is passed through the inlet check valve and the check valve portion. I try to inject air.
  • this check valve for entrance cannot be manufactured by a normal film heat sealing process because of its complicated structure. For this reason, it is necessary to bring the check valve for the inlet manufactured in a separate manufacturing process into the manufacturing process (heat sealing process) of the air cell cushioning material, and heat-weld it to the valve insertion position.
  • the manufacturing equipment inevitably had a complicated structure and increased size.
  • the present invention solves the above-mentioned problems, and when the film bag portion is filled with gas, the gas holding performance is high, the atmospheric pressure in the bag portion can be maintained for a long time, and the structure is simple.
  • An object of the present invention is to provide a check valve device that can be manufactured at low cost.
  • Another object of the present invention is to provide an air cell cushioning material that can maintain the air pressure in the air cell for a long period of time, and that is simple in structure and can be manufactured at low cost.
  • the present inventor has thermally fused the gas injection path to a specific shape even in a structure in which only the first film and the second film are overlapped.
  • the gas pressure in the bag portion can be increased while the film bag portion is filled with gas through the check valve portion without using a separately manufactured inlet check valve.
  • the inventors have found that it can be maintained over a period of time, and have reached the following invention.
  • the check valve device includes a first film and a second film that are overlapped, a peripheral portion is heat-sealed to form a bag portion, and the bag portion is formed from a gas injection path provided at an end portion of the bag portion.
  • a check valve device provided in the gas injection path for injecting gas into the gas injection path A bent flow path as a gas flow path that continues from the gas injection path into the bag portion is formed by a heat-sealed wire in which the first film and the second film are heat-sealed linearly, and the bent flow There is a valve in the road,
  • the gas is injected into the bag part through the valve part of the gas injection path and the bent flow path, and the filling is completed and the gas pressure is applied to the bag part, the first film on the bag part side Due to the expansion of the second film due to the gas pressure, a first expansion portion and a second expansion portion are formed in a part of the first film and the second film via a heat-sealing line that forms the bent flow path.
  • the first film and the second film of the valve section in the bent flow path are pulled and pressed by the first expansion section and the second expansion section so that they are in close contact with each other, and the valve section of the bent flow path is It is hermetically sealed.
  • the check valve device of the present invention when the gas is injected into the bag part from the gas injection path through the bent flow path, and the filling is completed and the gas pressure is applied to the bag part, the first film on the bag part side And the expansion of the second film form a first expansion portion and a second expansion portion, and the first expansion portion and the second expansion portion are connected to the first of the valve portion in the bent flow path via the heat-sealing line.
  • the film between the film 1 and the second film is pulled and pressed, and the folded flow path and the valve part film shrink to cause wrinkles, and the wrinkled film comes into close contact with each other, so the valve part after gas filling is sealed. be able to.
  • the 1st film and 2nd film which comprise a bag part can form a bent flow path by a heat fusion line, and can form a check valve device which uses that as a valve part.
  • the number of parts is small, it is possible to manufacture a film bag that is useful for environmental conservation and is filled with gas at a very low cost.
  • first film and the second film can be formed from separate films, but the continuous film may be bent to form the first film and the second film, and the bag portion may be formed by heat fusion. it can.
  • the width of the valve portion of the bent flow path is shorter than 1/4 of the width of the bag portion and longer than 1/25 of the width thereof, and the width of the valve portion is the same as when the bag portion is expanded.
  • the first and second inflating portions are formed to be shorter than 1/4 of the maximum expansion width and longer than 1/25 of the maximum expansion width.
  • gas injection path is formed substantially perpendicular to the bent flow path, and a gas injection port can be formed at the end of the gas injection path.
  • gas injection path and the bent flow path can be formed integrally, and a gas injection port can be formed at the end of the bent flow path.
  • bent flow path can be formed outside the bag portion and in a part of a heat-sealing line that is formed in the gas injection passage and partitions the bag portion and the gas injection passage.
  • valve portion of the bent flow path can be provided in an air injection path of an air cell cushioning material that forms a plurality of air cells by linearly heat-sealing the first film and the second film.
  • each air cell can be provided with a bent flow path having the valve portion.
  • the air cell cushioning material of the present invention includes a first film and a second film, and a peripheral portion is heat-sealed to form a bag portion that becomes a plurality of air cells, and a gas provided at an end of the bag portion.
  • the bent flow path is a gas flow path that continues from the gas injection path into the bag portion by a heat-sealing line in which the first film and the second film are heat-sealed linearly.
  • a valve portion is provided in the bent flow path, When the gas is injected into the bag part through the valve part of the gas injection path and the bent flow path, and the filling is completed and the gas pressure is applied to the bag part, the first film on the bag part side As a result of the expansion of the second film by the gas pressure, a first expansion portion and a second expansion portion are formed in a part of the first film and the second film via a heat-sealing line that forms the bent flow path. The first film and the second film of the valve section in the bent flow path are pulled and pressed by the first expansion section and the second expansion section to be in close contact with each other, and the bent flow path The valve portion is hermetically sealed.
  • the air cell cushioning material of the present invention only the first film and the second film constituting the air cell are used to form a bent flow path by heat-sealing lines, and the above check is made on the valve portion in the bent flow path. Since the valve device is provided, it is not necessary to attach an inlet check valve having a special structure to the inlet of the air cell as in the prior art. Further, it is not necessary to use heat-resistant printing or special valve members, the safety in using the product is improved, and since the number of parts is small, it can be manufactured very inexpensively and easily.
  • the valve portion can be formed only by heat-sealing the first film and the second film into a predetermined shape, the check manufactured in a separate process
  • the structure is simple and it can be manufactured at low cost, and the gas holding performance is high, maintaining the atmospheric pressure in the film bag (air cell) for a long time. can do.
  • there is no need to use heat-resistant printing or special valve members the safety in using the product is improved, and since the number of parts is small, it can be used for environmental conservation.
  • FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. 1 in which the thickness of the film is emphasized. It is a side view of the air cell shock absorbing material of the state which injected and filled air in the air cell.
  • FIG. 3 is a schematic cross-sectional view corresponding to FIG. 2 in a state where air is injected and filled in an air cell. It is a disassembled perspective view which shows a 1st film, a 2nd film, and a heat sealing
  • FIG. 1 to 7 show an air cell cushioning material 20 to which the check valve device 1 of the present invention is applied.
  • this air cell cushioning material 20 can be thermally fused on both sides or one side. It is composed of a first film 2 and a second film 3, and the peripheral portions of the first film 2 and the second film 3 are heat-sealed by a heat-sealing wire 14, and further, a lattice-like heat-sealing boundary line 15 inside.
  • the heat-sealing boundary line 18 is heat-sealed vertically and horizontally, whereby a large number of bag portions (air cells) 4 are formed vertically and horizontally.
  • a check valve device 1 is formed on the upper portion of the bag portion 4 of each row.
  • a single-layer plastic film can be used, but it is desirable to use a functional film having two or more layers from the viewpoint of gas barrier properties and heat sealability.
  • first film 2 and the second film 3 when a two-layer plastic film is used for the first film 2 and the second film 3, a gas barrier nylon or the like can be used for the outer layer, and LLDPE can be used for the inner layer.
  • LLDPE low-density polyethylene
  • the first film 2 and the second film 3 are heat-sealed by using LLDPE for the outer layer and nylon or the like for the inner layer. It is also possible to apply heat fusion in a state in which the first film 2 and the second film 3 that are attached are further folded.
  • the layer in this case is a case where a binder etc. are not included as a layer.
  • the effect of mutual adhesion by tension and pressing of the first film 2 and the second film 3 of the check valve device 1 can be further enhanced together with the adhesiveness. It has been found by conducting research.
  • the first film 2 and the second film 3 are preferably plastic films having a thickness of about 20 ⁇ m to about 300 ⁇ m.
  • the lattice-like heat fusion boundary line 15 and the heat fusion boundary line 18 forming the bag portion 4 are composed of a long heat fusion boundary line 15 and a short heat fusion boundary line 18 as shown in FIG.
  • a gas injection path 5 is formed at the upper end of the air cell cushioning material 20 by a heat fusion line 14 and a heat fusion boundary line 19 provided in parallel, and an inlet 9 is formed at the end of the gas injection path 5. It is open. Note that air is normally injected into the bag portion 4 of the air cell buffer material 20, but of course, a gas such as nitrogen can also be injected, and the air inlet of the air cell buffer material 20 serves as the gas injection path 5. Formed as.
  • a large number of bag portions (air cells) 4 of the air cell cushioning material 20 are formed as a plurality of stages of bag portions 4 connected in a plurality of rows below the gas injection path 5, each of which is a heat-sealing boundary line 18. Is formed in parallel with the gas injection path 5 and the thermal fusion boundary 15 is formed in the vertical direction. Cell flow paths 17 are provided at both ends of the heat fusion boundary line 18 of each stage provided in the horizontal direction, and each column is connected to the heat fusion boundary line 19 at the top (below the gas injection path 5).
  • a check valve device 1 is provided for filling the bag portion 4. The air injected from the inlet 9 at the end of the gas injection path 5 is passed through each check valve device 1, and all the bag parts 4 are filled with air from the bag part 4 through the lower cell flow path 17. It has become.
  • the check valve device 1 arranged at the inlet position of the bag portion 4 in each row is a portion continuing into the bag portion 4 as a branch passage from the gas injection passage 5, and between the first film 2 and the second film 3,
  • the heat-sealing wires 11, 12, and 13 are heat-sealed linearly to form a bent flow path 6, and the bent flow path 6 is configured as a valve portion 10.
  • the valve portion 10 of the bent flow path 6 has a bent shape bent substantially at a right angle, and has a width and a shape capable of functioning as a check valve.
  • the check valve device 1 is configured by providing a valve portion 10 in a bent flow path 6, and the bent flow path 6 having the valve portion 10 is located below the gas injection path 5.
  • the valve inlet 6a is formed in a part of the heat fusion boundary line 19 of the heat fusion line 19, and the heat fusion wires 11 and 12 are vertically extended downward from the valve inlet 6a.
  • the lower end of the wire 11 is bent at a substantially right angle toward the other heat-sealing wire 12 to form a heat-sealing wire 13 substantially parallel to the gas injection path 5, and the tip of the other heat-sealing wire 12 is heat-sealed.
  • a valve outlet 6b is formed between the line 13 and the line 13.
  • the check valve device 1 is configured by forming the bent flow path 6 between the first film 2 and the second film 3 by the three heat-sealing wires 11, 12, and 13. 10 is simply formed between the first film 2 and the second film 3 in the bent flow path 6. That is, when the gas is filled, as shown in FIGS. 3 to 7, the bag portion 4 expands. At this time, the first expansion portion 7 of the first film 2 and the second expansion portion 8 of the second film 3 The first expansion part 7 of the first film 2 and the second expansion part 8 of the second film 3 are formed in the vicinity of the check valve device 1 and are valved from both sides via heat-sealing wires 11 and 12 during expansion. The film of the portion 10 is pulled and pressed, the first film 2 and the second film 3 are brought into close contact with each other by the tensile force and pressing force, and the function as the valve portion 10 that seals the bent flow path 6 is performed. ing.
  • the check valve device 1 completes filling by injecting gas into the bag part 4 through the gas injection path 5 and the bent flow path 6, and the gas pressure is applied to the bag part 4, the bag part 4 And the first film 2 and the second film 3 on the bag part 4 side are expanded by the gas pressure, and the first expansion part 7 and the first film 7 are connected to the first expansion part 7 via the heat-sealing wires 11 and 12 on both sides of the bent flow path 6.
  • the expansion part 8 pulls and presses the first film 2 and the second film 3 of the valve part 10 in the bent flow path 6 so that the valve part 10 of the bent flow path 6 is brought into close contact with each other. Configured to close.
  • the channel width A width of the narrowest part of the bent channel
  • the channel width A is important. If the flow path width A is too large relative to the width of the bag part 4, the internal gas tends to flow backward and leak easily, and if the flow path width A is small, the air is injected into the bag part 4 using an air pump or the like. At this time, pressure loss increases, and it is difficult to inject gas efficiently.
  • the flow path width A is formed to be shorter than 1/4 of the width W of the bag portion 4 and longer than 1/25 of the width W, and when the bag portion 4 is expanded.
  • the first expansion portion 7 and the second expansion portion 8 are formed to be shorter than 1/4 of the maximum expansion width Wx (FIG. 3) and longer than 1/25 of the maximum expansion width Wx. Accordingly, when the bag portion 4 is filled with gas, the first film 2 of the valve portion 10 is caused by the tensile force and the pressing force of the first expansion portion 7 of the first film 2 and the second expansion portion 8 of the second film 3. And the second film 3 can be brought into close contact with each other.
  • this check valve device 1 when the flow path width A of the valve portion 10 is wider than 1 ⁇ 4 of the width W of the bag portion 4, the adhesion of the valve portion 10 is likely to be reduced.
  • the flow path width A of 10 is shorter than 1/25 of the maximum expansion width Wx of the first expansion portion 7 and the second expansion portion 8, the pressure loss at the valve portion 10 when air is injected is reduced. It is very increased and is likely to hinder air injection.
  • the flow path width A is shorter than 1/7 of the width W of the bag portion 4 and longer than 1/19 of the width W, and the first inflating portion 7 when the bag portion 4 is inflated. It is preferable to form the second expansion portion 8 shorter than 1/7 of the maximum expansion width Wx (FIG. 3) and longer than 1/19 of the maximum expansion width Wx. Specifically, for example, when the bag portion 4 has a width W of about 40 mm and the maximum expansion width Wx of the first inflatable portion 7 and the second inflatable portion 8 is about 35 mm, the flow path width A is: It is preferable to be less than about 20 mm and about 2.0 mm or more.
  • the flow path width A of the valve portion 10 can be in the range of about 0.8 mm to about 20 mm.
  • the check valve device 1 having the above-described configuration is disposed between the upper gas injection path 5 of the air cell cushioning material 20 made of the first film 2 and the second film 3 and the lower bag portion 4 (air cell).
  • the gas (air) injected from the gas injection path 5 is injected into each bag portion 4 through each check valve device 1 and filled.
  • the air cell cushioning material having the above configuration is formed by cutting the first film 2 and the second film 3 into a rectangular shape having a predetermined size and superimposing them to form a linear heat-sealing line at a predetermined position.
  • the peripheral portions of the first film 2 and the second film 3 are heat-sealed by the heat-sealing wire 14, and the gas injection path 5 is formed by the heat-sealing boundary line 19 and the heat-sealing wire 14 in the upper horizontal direction.
  • the end portion is opened to form the injection port 9.
  • the check valve device 1 is formed by the heat-sealing lines 11, 12, 13 between the heat-sealing boundary line 19 and the bag part 4 formed below the heat-sealing boundary line 19.
  • air gas
  • air is injected into each bag portion 4 of the air cell cushioning material 20 using, for example, a small air injector (air pump).
  • air pump air pump
  • a nozzle of an air pump (not shown) is inserted into the inlet 9 at the end of the gas injection path 5, and air is passed through the check valve device 1 from the gas injection path 5 into each bag part 4. Fill.
  • the bag parts 4 expand as shown in FIGS. 3 to 7, and accordingly, the first film and the first film of the bag part 4 are expanded.
  • the first expansion portion 7 and the second expansion portion 8 are formed by the first film 2 and the second film 3 on both sides of the bent flow path 6 of each check valve device 1, that is, on both sides of the valve portion 10. Is done.
  • the first film 2 of the valve section 10 in the bent flow path 6 is caused by the tensile force and the pressing force of the first expansion section 7 and the second expansion section 8 via the heat-sealing wires 11 and 12 of the valve section 10.
  • the second film 3 are brought into close contact with each other.
  • first expansion portion 7 and the second expansion portion 8 are tensioned and pressed between the first film 2 and the second film 3 of the valve portion 10 in the bent flow path 6 via the heat-sealing wires 11 and 12. Then, since the film of the bent flow path 6 and the valve portion 10 is contracted and wrinkled, and the wrinkled films are in close contact with each other, the valve portion 10 after gas filling is sealed.
  • each check valve device 1 is sealed, filling of the air cell cushioning material 20 is completed, and each bag portion 4 is held in an inflated state.
  • the sealed state at this time is twisted or wrinkled in the film of the valve portion 10 due to the tensile force of the first and second inflating portions 7 and 8. 10 closures can be easily confirmed.
  • the air cell cushioning material 20 is formed by the bag part 4 and the check valve device 1 by a very simple process in which a heat-sealing line is formed between the first film 2 and the second film 3 on the front and back sides.
  • the check valve device 1 is formed only by the first film 2 and the second film 3 constituting the bag portion 4 and forms a bent flow path 6 by heat-sealing lines. Since it can be configured to be the valve portion 10, it is not necessary to attach a check valve for an inlet having a special structure to the inlet of the bag portion as in the prior art, and it can be manufactured very cheaply and easily. it can.
  • the valve portion 10 having the bent flow path 6 is provided only in the bag portion 4 adjacent to the gas injection path 5, but as shown in FIG.
  • the valve portions 10 having the bent flow paths 6 can be provided in all the plurality of bag portions 4.
  • the valve part 10 is formed at the thermal fusion boundary line 19 between the bag parts 4 adjacent in the vertical direction.
  • the valve part 10 provided in the some bag part 4 can also be formed in the heat sealing
  • a branch gas injection path extending in the multi-stage direction is provided in the gas injection path 5 in the upper lateral direction of the air cell cushioning material 20 with respect to the plurality of bag portions 4 formed in a multi-stage shape there.
  • 5a may be vertically connected and air may be injected from the gas injection path 5 through the branch gas injection path 5a to the lower bag section 4 through the valve section 10.
  • the heat-sealing line 11 can also be provided with an inclination rather than a right angle with respect to the heat-sealing boundary line 19.
  • the bent flow path 6 has a wider valve inlet 6a, and air can be injected better.
  • the air cell cushioning material of each example and comparative example was formed in a size of 150 ⁇ 390 mm by overlapping a first film of 150 ⁇ 390 mm and a second film of 150 ⁇ 390 mm and heat-sealing a predetermined portion.
  • 40 air cells having a maximum expansion width of 30 ⁇ 30 mm were formed in 4 columns and 10 rows.
  • a multi-layer co-pressed film having a gas barrier property with a thickness of 75 ⁇ m was used for the first film and the second film.
  • the flow path width A of the valve part was set to 21 mm, and in Examples 1 to 5, the flow path width A of the valve part was changed to 3 mm to 15 mm to manufacture the cushioning material.
  • FIG. 12 shows a check valve device 1A according to another embodiment.
  • This check valve device 1A is formed by forming a bent flow path 6A that is bent in a triangular shape at the upper part of each bag part 4 and forming a valve part 10A in the bent flow path 6A.
  • the bent flow path of the check valve device 1A is bent so that the first film and the second film are heat-sealed linearly by triangular frame-shaped heat-sealing wires 11A, 12A, and 13A and bent at an acute angle.
  • the flow path 6A is formed, and the bent flow path 6A is configured as a valve portion 10A.
  • the valve portion 10A of the bent flow path 6A has a bent shape bent in a substantially triangular shape as shown in FIG. 12, and the flow path width A and the shape that can function as a check valve as described above. have.
  • the flow path width A of the valve portion 10A is formed to be shorter than 1/4 of the width W of the bag portion 4 and longer than 1/25 of the width W in the same manner as described above, and when the bag portion 4 is expanded.
  • the first inflatable portion and the second inflatable portion are formed to be shorter than 1 ⁇ 4 of the maximum expansion width Wx and longer than 1/25 of the maximum expansion width Wx.
  • the first film and the second film of 10A are in close contact with each other.
  • FIGS. 13 and 14 show an air cell cushioning material having a single air cell according to still another embodiment.
  • the air cell cushioning material of this example as described above, the first film 22 and the second film 23 are overlapped, and the peripheral portion thereof is surrounded by the heat-sealing wire 34 to form a single bag portion 24.
  • a check valve device 21 is provided on the upper portion of the bag portion 24.
  • the gas injection path 25 is formed vertically in the upper part of the bag part 24 (in the longitudinal direction of the bag part 24), and the check valve device 21 is connected to the end part of the gas injection path 25 as shown in FIGS.
  • the valve portion 30 is formed by the heat fusion wires 31 to 33.
  • the valve portion 30 of the check valve device 21 is configured to form a bent flow passage 26 at an end portion of the gas injection passage 25 and to have a check valve inside thereof.
  • 25 is formed from heat-sealing wires 31 and 32 extending in parallel vertically from the peripheral heat-sealing wire 34, and the lower end of one heat-sealing wire 31 is substantially on the side of the other heat-sealing wire 32.
  • a heat-sealing line 33 substantially perpendicular to the longitudinal direction of the gas injection path 25 is formed so as to be bent at a right angle, and a valve outlet is formed between the tip of the other heat-sealing line 32 and the heat-sealing line 33. Configured. Thereby, the valve part 30 is comprised by the bending flow path 26 provided in the edge part of the gas injection path 25.
  • This check valve device 21 is formed by forming a bent flow path 26 between the first film 22 and the second film 23 by three heat-sealing wires 31, 32, 33.
  • the valve portion 30 that seals the bent flow path 26 when filled with gas is formed between the first expansion portion 27 of the first film 22 and the second expansion portion 28 of the second film 23.
  • the first expansion portion 27 of the first film 22 and the second expansion portion 28 of the second film 23 pull the film of the valve portion 30 from both sides via the heat fusion wires 31 and 32.
  • the flow path width A in the valve section 30 of the bent flow path 26 is shorter than 1/4 of the width W of the bag section 4 and longer than 1/25 of the width W as shown in FIG. It is preferable that the bag portion 24 is formed to be shorter than 1/4 of the maximum expansion width Wx (FIG. 14) of the first expansion portion 27 and the second expansion portion 28 when the bag portion 24 is expanded and longer than 1/25 of the maximum expansion width Wx. . Accordingly, when the bag portion 24 is filled with gas, the first film 22 of the valve portion 30 is caused by the tensile force and the pressing force of the first expansion portion 27 of the first film 22 and the second expansion portion 28 of the second film 23. And the second film 23 can be adhered to each other.
  • the channel width A is shorter than 1/7 of the width W of the bag portion 4 and longer than 1/19 of the width W, and the first inflating portion 27 when the bag portion 4 is inflated.
  • the second expansion portion 28 may be formed to be shorter than 1/7 of the maximum expansion width Wx (FIG. 14a) and longer than 1/19 of the maximum expansion width Wx.
  • the air cell cushioning material having such a configuration, for example, when a nozzle of an air pump is inserted into the gas injection path 25 and air is injected, the air passes through the valve portion 30 of the check valve device 21 of the bent flow path 26 and passes through the bag. It flows into the part 24 and the bag part 24 is inflated.
  • valve portion 30 when the first film 22 and the second film 23 of the valve part are pulled and pressed to come into close contact with each other, air tends to be discharged through the valve part 30 due to the gas pressure of the bag part 24. Furthermore, due to the constriction of the valve portion 30 due to the tension and pressing between the first film 22 and the second film 23, the flow velocity of the gas flowing through the valve portion 30 increases, and a negative pressure is generated in the valve portion 30. Is pressed by the atmospheric pressure, the valve portion 30 can be reliably closed by this action when the air filling is completed.
  • the check valve device 21 can be easily connected to the gas injection path 25 provided on the upper portion of the bag portion 24 by the heat-sealing wires 31 to 33. Since it is possible to form a bag body with a check valve that can be sealed only by forming the bag body, in addition to the air cell cushioning material, even a bag body made of a film that is filled with gas and sealed is of the present invention. A check valve device can be easily applied.
  • FIG. 15 shows an air cell cushioning material of still another embodiment, and the same components as those of the embodiment of FIGS. 13 and 14 are given the same reference numerals as those of FIG.
  • the first film and the second film are overlapped, and the peripheral portion thereof is surrounded by the heat-sealing wire 34 to form the bag portion 24, and the upper portion of the bag portion 24.
  • the gas injection path 25 is formed vertically (in the longitudinal direction of the bag part 24) at the upper part of the bag part 24, and the check valve device 29 is connected to the end part of the gas injection path 25 as shown in FIG.
  • a valve portion 35 is formed by the heat fusion wires 31, 32 and 37.
  • the valve portion 35 of the check valve device 29 is formed so as to form a bent flow path 36 that bends on both sides of the end portion of the gas injection path 25, and the inside thereof serves as a check valve.
  • the gas injection path 25 is formed of heat fusion lines 31 and 32 extending vertically and parallel from the peripheral heat fusion line 34, and a U-shaped thermal fusion is performed so as to cover the lower side of the gas injection path 25.
  • a wire 37 is provided to form a bent flow path 36 and a valve outlet is formed above the heat fusion wires 31 and 32.
  • the valve part 35 is comprised by the bending flow path 36 provided in the edge part of the gas injection path 25.
  • the bent flow path 36 is formed between the first film and the second film by the heat-sealing wires 31, 32, and 37 as described above.
  • the valve part 35 which seals the bent flow path 36 at the time of gas filling is formed between the 1st expansion part of the 1st film, and the 2nd expansion part of the 2nd film.
  • the first expansion part of one film and the second expansion part of the second film pull and press the film of the valve part 35 from both sides via the heat-sealing wires 31, 32, 37, and the first film and the second film
  • the films are brought into close contact with each other to form a check valve device 29.
  • the nozzle of the air pump When injecting air into the air cell cushioning material, the nozzle of the air pump is inserted into the gas injection path 25 and air is injected in the same manner as described above, and then the air passes through the valve portion 35 of the bent flow path 36 and passes through the bag. It flows into the part 24 and the bag part 24 is inflated.
  • FIG. 16 shows an air cell cushioning material according to another embodiment, and the same components as those in the above embodiment are denoted by the same reference numerals as those in FIG.
  • the first film and the second film are overlapped, and the peripheral portion thereof is surrounded by the heat-sealing wire 14 to form the bag portion 4, and the upper portion of the bag portion 4.
  • a check valve device 49 is provided in the gas injection path 5.
  • the gas injection path 5 is formed in the upper part of the bag part 4 in the lateral direction, and the check valve device 49 has a heat sealing line 19 for partitioning the gas injection path 5 and the bag part 4 as shown in FIG.
  • a valve portion 40 is formed in part and configured.
  • the valve portion 40 of the check valve device 49 forms an opening in a part of the heat-sealing line 19 that partitions the gas injection path 5 and the bag portion 4, and the opened valve portion 40 is viewed from above.
  • a saddle-shaped (L-shaped) heat-sealing wire 48 is provided in the gas injection path 5 so as to cover it.
  • the base of the L-shaped heat-sealing wire 48 is connected to the heat-sealing wire 19.
  • a bent flow path 46 is formed on the upper side of the valve section 40, and the valve section 40 is configured by an opening provided in a part of the gas injection path 5 and a subsequent bent flow path 46. Become.
  • the bent flow path 46 is formed between the first film and the second film by the heat fusion wires 19 and 48 in the same manner as described above.
  • the valve part 40 which seals the bent flow path 46 at the time of gas filling is formed between the 1st expansion
  • the first inflated part of one film and the second inflated part of the second film are contracted by pulling and pressing the film of the valve part 40 from both sides via the heat-sealing wires 19, 48. Is a check valve device 49.
  • the nozzle of the air pump When injecting air into the air cell cushioning material, the nozzle of the air pump is inserted into the gas injection path 5 from the injection port 9 and the air is injected as described above. And then flows into the bag part 4 to inflate the bag part 4.
  • the check valve apparatus of this invention can also be applied to the valve
  • the air cell cushioning material is formed by heat-sealing the first film and the second film.
  • the film is further overlapped on the outside, and three or more films are heat-welded to form a bag.
  • Parts and valves can also be formed.
  • the shape of a bag part can also be made into a polygon and a circle other than the above rectangles and rectangles.

Abstract

Selon l'invention, une partie sachet (4) est formée par thermosoudage de manière linéaire entre un premier et un second film (2, 3), et un trajet d'écoulement (6) courbé possédant une partie valve (10), est formé sur un trajet de remplissage de gaz (5) de la partie sachet (4). Un gaz remplit l'intérieur de la partie sachet (4) en passant par le trajet de remplissage de gaz (5) et la partie valve (10) du trajet d'écoulement (6), et lorsqu'une force de pression du gaz est appliquée à l'intérieur de la partie sachet (4), celle-ci se dilate. Alors, en raison de la dilatation du premier et du second film (2, 3) du fait de la force de pression du gaz côté partie sachet (4), une première et une seconde partie dilatation (7, 8) sont formées via une ligne de thermosoudage formant le trajet d'écoulement (6). Le premier et le second film (2, 3) de la partie valve (10) à l'intérieur du trajet d'écoulement (6), sont soumis à une tension et à une pression par la première et la seconde partie dilatation (7, 8), et mutuellement thermosoudés, et la partie valve (10) du trajet d'écoulement (6) est ainsi obturée.
PCT/JP2013/061150 2012-04-20 2013-04-15 Dispositif de valve de non-retour WO2013157509A1 (fr)

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TW (1) TW201408548A (fr)
WO (1) WO2013157509A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016050028A (ja) * 2014-09-01 2016-04-11 克敏 吉房 排気弁装置及び気体クッション材
CN110466890A (zh) * 2019-09-10 2019-11-19 杭州巨杰包装科技有限公司 具有锁气功能的新型空气缓冲体及其制作方法
JP7113552B1 (ja) * 2021-05-14 2022-08-05 均 佐武 フィルム組立体
JP7326819B2 (ja) 2019-04-02 2023-08-16 コニカミノルタ株式会社 緩衝部材及び緩衝部材形成材

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108001855A (zh) * 2016-11-02 2018-05-08 上海艾尔贝包装科技发展有限公司 无阀膜充气袋及其制作方法和充气装置
KR102359495B1 (ko) * 2020-11-17 2022-02-07 최기영 포장용 에어완충재 제조 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05505159A (ja) * 1989-07-11 1993-08-05 ベッカー，グドルン 梱包用の膨張可能なフィルムバッグ
JPH07165265A (ja) * 1993-10-28 1995-06-27 K Jasai Z 緩衝保護装置
US5514431A (en) * 1993-12-30 1996-05-07 Dai Nippon Printing Co., Ltd. Air bag and method for making the air bag
JP2002240832A (ja) * 2000-12-15 2002-08-28 Shikoku Kako Kk 流体充填包装用袋
JP2006051053A (ja) * 2004-08-09 2006-02-23 Shozo Tabuchi エアークッション
JP2011042383A (ja) * 2009-08-20 2011-03-03 Teruo Mitsuda 螺旋状緩衝部材

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07165266A (ja) * 1993-12-10 1995-06-27 Hitachi Electron Service Co Ltd 気体圧入膨張形包装用紙製緩衝材とその製造方法
KR101256701B1 (ko) * 2009-01-05 2013-04-19 오계술 공기충전형 포장재
JP4673929B1 (ja) * 2010-06-17 2011-04-20 有限会社田中テクニカル シート製の逆止弁構造

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05505159A (ja) * 1989-07-11 1993-08-05 ベッカー，グドルン 梱包用の膨張可能なフィルムバッグ
JPH07165265A (ja) * 1993-10-28 1995-06-27 K Jasai Z 緩衝保護装置
US5514431A (en) * 1993-12-30 1996-05-07 Dai Nippon Printing Co., Ltd. Air bag and method for making the air bag
JP2002240832A (ja) * 2000-12-15 2002-08-28 Shikoku Kako Kk 流体充填包装用袋
JP2006051053A (ja) * 2004-08-09 2006-02-23 Shozo Tabuchi エアークッション
JP2011042383A (ja) * 2009-08-20 2011-03-03 Teruo Mitsuda 螺旋状緩衝部材

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016050028A (ja) * 2014-09-01 2016-04-11 克敏 吉房 排気弁装置及び気体クッション材
JP7326819B2 (ja) 2019-04-02 2023-08-16 コニカミノルタ株式会社 緩衝部材及び緩衝部材形成材
CN110466890A (zh) * 2019-09-10 2019-11-19 杭州巨杰包装科技有限公司 具有锁气功能的新型空气缓冲体及其制作方法
JP7113552B1 (ja) * 2021-05-14 2022-08-05 均 佐武 フィルム組立体

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