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WO2011052246A1 - Clapet anti-retour, sac d'isolement et procédé de production de ceux-ci - Google Patents

Clapet anti-retour, sac d'isolement et procédé de production de ceux-ci Download PDF

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Publication number
WO2011052246A1
WO2011052246A1 PCT/JP2010/054642 JP2010054642W WO2011052246A1 WO 2011052246 A1 WO2011052246 A1 WO 2011052246A1 JP 2010054642 W JP2010054642 W JP 2010054642W WO 2011052246 A1 WO2011052246 A1 WO 2011052246A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
check valve
bag
valve body
sheets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/054642
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English (en)
Japanese (ja)
Inventor
幹雄 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2010800455628A priority Critical patent/CN102548858B/zh
Priority to JP2011538272A priority patent/JP5433873B2/ja
Priority to US13/504,040 priority patent/US20120213453A1/en
Publication of WO2011052246A1 publication Critical patent/WO2011052246A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14—Valve bags, i.e. with valves for filling
    • B65D31/147—Valve bags, i.e. with valves for filling the filling port being provided in a side wall
    • 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
    • B65D81/18—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 providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2038—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 providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/788—Having expansible port
    • Y10T137/7881—Apertured plate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making

Definitions

  • the present invention relates to a check valve, a sealed bag provided with the check valve, a method for manufacturing the check valve, and a method for manufacturing the sealed bag.
  • sealing bag that can seal an article storage unit having a space for storing articles such as clothing and food in an airtight state.
  • This sealed bag has a check valve that allows various gases such as air existing in the article storage unit to be discharged to the outside of the bag and to keep the state of the bag so that the article storage unit and the bag exterior can be vented. Used.
  • the check valve When the gas is discharged, the check valve allows passage of airflow in one direction and blocks airflow in the other direction by opening and closing an airflow passage space that is a space through which the gas passes. It can be done.
  • the check valve 100 has a rectangular plastic film 101 and a filter film 102 having the same width that is shorter than that of the rectangular plastic film 101.
  • the edge is overlapped with the upper edge of the filtration film 102 and further laminated on one side of the plastic film 101 to form a flat laminate, and the both edges and the lower edge are heat bonded.
  • the upper side edge of the film 102 for filtration and the lower side edge overlap part 100a of the plastic films 103 and 104 are heat-bonded, the upper end is provided with an opening 106, and the lower surface has a filtration surface made of the film 102 for filtration.
  • the check piece 103a is formed of the plastic film 103, the operation pocket portion 109 is provided, and a low-viscosity inert liquid is applied to the upper inner surface of the plastic film 101 or the inner surface of the check valve 103, It is supposed to maintain closeness.
  • a desirable function of the check valve is to reduce the “initial pressure”, which is the atmospheric pressure in the sealed bag at the moment when exhaust is started, as small as possible. If the "initial pressure” is high, exhausting will not start easily, and it will be necessary to apply a large external force to the sealed bag, or the gas will not easily be discharged and will remain in the bag, causing the sealed bag to swell up. Because there are things like this.
  • the invention of the present application has improved the certainty of the check effect, the manufacturing cost is not increased as much as possible, and the check valve has a small “initial pressure” and vice versa. It is an object of the present invention to provide a sealing bag provided with a stop valve, and a check valve and a manufacturing method of the sealing bag.
  • the invention according to claim 1 of the present application is A plurality of sheets are stacked to form an airflow passage space 3a that is a space through which gas passes between the sheets, and the airflow passage space 3a is opened and closed, so that the inlet to the outlet are formed.
  • a plurality of resin base sheets 31, 32 and a plurality of resin flexible valve body sheets 4 are provided facing the front and back directions, Among the plurality of valve body sheets 4, at least two of the upstream valve body sheet 4 a disposed on the upstream side with respect to the positive airflow direction and the downstream valve body sheet 4 b disposed on the downstream side are provided.
  • Each of the valve body sheets 4a, 4b constituting the one set is bonded to at least the one-side base sheet 31,
  • the adhesion is such that each valve body sheet 4a, 4b is in series with the airflow direction at the time of discharge, and both do not overlap in the front and back direction
  • the upstream valve body sheet 4a is bonded to the one-side base sheet 31 on the upstream end 4a1 side, and the downstream end 4a2 side is movable with respect to the base sheets 31, 32
  • the downstream valve body sheet 4b is bonded on the downstream end 4b2 side, and the upstream end 4b1 side is movable with respect to the one-side base sheet 31.
  • At least a part of the set of valve body sheets 4a and 4b is a valve body sheet 91 that is different from the other side base sheet 32 or the set of valve body sheets 4a and 4b.
  • a check valve characterized by blocking air flow in the reverse direction.
  • the invention according to claim 2 of the present application is A part of the one-side base sheet 31 is an airflow passage 31a having air permeability through which the airflow in the positive direction passes in the front and back directions,
  • the air flow passage portion 31a is the inflow port where the air flow in the positive direction flows into the check valve,
  • the said air flow passage part 31a is arrange
  • the check valve described in 1. is provided.
  • the invention according to claim 3 of the present application is
  • the said one side base sheet 31 is comprised from the said airflow passage part 31a and another part, and this other part is provided with airtightness,
  • the check valve of Claim 2 characterized by the above-mentioned is provided. .
  • the invention according to claim 4 of the present application is On the side of the other side exterior sheet 32, the outlet 32b from which a forward airflow flows out from the check valve is provided,
  • the outlet 32b is formed by making the other-side exterior sheet 32 smaller than the one-side exterior sheet 31, or is formed by providing an opening in the other-side exterior sheet 32.
  • the outlet port 32b is disposed on the downstream side of the one-side basic sheet 31 with respect to the downstream end 4a2 of the upstream valve body seat 4a in the front-back direction.
  • the described check valve is provided.
  • the invention according to claim 5 of the present application is Bending seals s4 and s5 are formed between the inlet 31a and the inlet 31a,
  • the bending seals s4 and s5 are obtained by bonding the one side base sheet 31, the valve body sheet 4 and the other side base sheet 32 in the front and back direction,
  • the bent seals s4 and s5 are bent so that the flow path in the check valve V from the inflow port 31a to the inflow port 31a becomes a zigzag flow path in a plan view of the sheet.
  • a check valve according to claim 4 is provided.
  • the invention according to claim 6 of the present application is An inert substance 8 such as a silicon liquid is disposed in the flow path defined by the bent seals s4 and s5 and between the valve body sheet 4 and the other side basic sheet 32.
  • a check valve according to claim 5 is provided.
  • the invention according to claim 7 of the present application is The one side base sheet 31 has air permeability on the entire surface, A part of the one-side base sheet 31 having air permeability is an airflow passage portion 31a through which the airflow in the positive direction passes in the front and back direction,
  • the air flow passage portion 31a is a portion of the one-side basic sheet 31 that is upstream of a position that coincides with the upstream end 4a1 of the upstream valve body seat 4a in the front and back direction.
  • the check valve described in 1. is provided.
  • the invention according to claim 8 of the present application is The check valve according to claim 2, wherein the air flow passage portion 31 a of the one-side base sheet 31 is a nonwoven fabric.
  • the invention according to claim 9 of the present application is
  • the one side base sheet 31 is composed of a non-woven fabric having air permeability on the entire surface, A part of the one-side base sheet 31 having air permeability is an airflow passage portion 31a through which the airflow in the positive direction passes in the front and back direction, 2.
  • the invention according to claim 10 of the present application is It is used by being attached to a sealed bag 1 provided with an article storage unit 2, and allows the article storage unit 2 and the outside of the bag to be vented in order to discharge the gas present in the article storage unit 2 to the outside of the bag.
  • a check valve according to claim 1 is provided.
  • the invention according to claim 11 of the present application is A sealed bag 1 to which the check valve V according to claim 4 is attached,
  • the sealed bag 1 includes flexible resin bag sheets 11 and 12, By adhering the bag sheets 11 and 12, except for the part where the article storage port 1 a and the check valve V are attached, the bag sheet 11 and 12 are separated from the outside of the bag in an airtight manner.
  • a close bag characterized in that the entire periphery of the check valve V is bonded to the inside or outside of the bag sheets 11 and 12.
  • the invention according to claim 12 of the present application is A sealed bag 1 to which the check valve V according to claim 7 is attached.
  • the sealed bag 1 includes flexible resin bag sheets 11 and 12, By adhering the bag sheets 11 and 12, except for the part where the article storage port 1 a and the check valve V are attached, the bag sheet 11 and 12 are separated from the outside of the bag in an airtight manner.
  • the check valve V is sandwiched between the bag sheets 11 and 12, the upstream end based on the airflow direction at the time of discharge is located in the article storage unit 2, and the downstream end is outside the article storage unit 2.
  • a lateral seal 13 is formed by bonding the bag sheets 11 and 12, The lateral seal 13 is formed so as to cross the check valve V in the width direction,
  • a longitudinal seal 14 is formed by adhesion of the bag sheets 11 and 12, The longitudinal seal 14 is a direction intersecting with the lateral seal 13 and is extended upstream from the lateral seal 14 on the basis of the airflow direction during discharge in the check valve V.
  • the vertical seal 14 is formed so that the check valve V is sandwiched between the two in a set with two gaps wider than the width dimension of the check valve V.
  • the upstream end 141 of the vertical seal 14 has the above-mentioned check more than the lower end 31a1 of the portion through which air substantially passes, which is defined by the horizontal seal 13 in the airflow passage 31a of the one-side base sheet 31.
  • a sealing bag characterized in that it is located on the upstream side with respect to the airflow direction during discharge in the valve V.
  • the invention according to claim 13 of the present application is A check valve manufacturing method according to claim 1, As the above-described basic sheets 31 and 32 and the valve body sheet 4, a long sheet continuously supplied in the longitudinal direction is used. Each valve body sheet 4a, 4b constituting the one set is supplied as a single long sheet, and then cut into two sheets in the width direction, and then superimposed on the one-side base sheet 31.
  • a check valve manufacturing method is provided.
  • the invention according to claim 12 of the present application is In the manufacturing method of the sealed bag 1 to which the check valve V is attached,
  • the check valve V includes flexible resin base sheets 31 and 32 and a plurality of valve body sheets 4, and one side base sheet 31 of the base sheets 31 and 32 is air permeable over the entire surface.
  • the base sheets 31 and 32 are provided opposite to each other in the front and back direction, and the upstream side of the plurality of valve body sheets 4 disposed on the upstream side with respect to the airflow direction at the time of discharge. At least two of the valve body sheet 4a and the downstream valve body sheet 4b arranged on the downstream side are made into one set, and each of the valve body sheets 4a and 4b constituting the one set is at least the above-mentioned
  • the valve body sheets 4a and 4b are connected in series to the air flow direction at the time of discharge, and the two do not overlap in the front and back directions.
  • the side valve body sheet 4a is bonded to the one-side base sheet 31 on the upstream end 4a1 side, and the downstream end 4a2 side is movable with respect to the base sheets 31, 32.
  • the body sheet 4b is bonded on the downstream end 4b2 side, and the upstream end 4b1 side is movable with respect to the base sheets 31 and 32.
  • the end portions 4a2 and 4b1 on the side that can be moved with respect to the base sheet 31, 32 can be brought into close contact with the other side base sheet 32, or are bonded to the other side base sheet 32.
  • a check valve that can be brought into close contact with a valve body sheet 4 different from that constituting the one set
  • the bag sheets 11 and 12 are made of a flexible resin, and long sheets that are continuously supplied in the longitudinal direction are used. Sandwiching the check valve V between the bag sheets 11, 12, Forming a lateral seal 13 by crossing the check valve V in the width direction by bonding the bag sheets 11 and 12; Forming a longitudinal seal 14 by bonding the bag sheets 11 and 12;
  • the longitudinal seal 14 formed in the above process is a direction intersecting with the lateral seal 13 and is upstream of the lateral seal 14 with reference to the airflow direction at the time of discharge in the check valve V.
  • the vertical seal 14 is formed so as to sandwich the check valve V so as to form a pair of two with an interval wider than the width dimension of the check valve V.
  • the upstream end 141 of the vertical seal 14 has the above-mentioned check more than the lower end 31a1 of the portion through which air substantially passes, which is defined by the horizontal seal 13 in the airflow passage 31a of the one-side base sheet 31.
  • a method for manufacturing a sealed bag characterized in that it is located on the upstream side with respect to the direction of airflow during discharge in the valve V.
  • the present invention includes a check valve that increases the certainty of the check effect and that does not increase the manufacturing cost as much as possible, and has a small “initial pressure”, and the check valve. It was possible to provide a sealed bag and a check valve and a method for manufacturing the sealed bag.
  • the check valve which concerns on an example of embodiment of this invention is shown, (A) is a top view, (B) is an end elevation of XX in (A), (C) is a bottom view It is. It is the schematic which exaggerated and showed the principal part which shows the relationship between the other side base sheet
  • (A) is a top view of the sealing bag of the example
  • (B) is a top view of the principal part which shows the example which changed the shape of the vertical direction seal in the sealing bag of the example. It is the sealed bag of the example, and is the schematic of the cross section of the bag alley-like part at the time of exhaust_gas
  • (A) is the perspective view in the back side of a bag
  • (B) is reverse on the back side of a bag.
  • (C) shows a cross-sectional view at the position of the YY arrow in (B) on the back side of the bag.
  • (A) is a front view of the sealing bag which concerns on other embodiment of this invention
  • (B) is a front view of the sealing bag which concerns on further another embodiment of this invention
  • (C) is ( It is a center longitudinal cross-sectional view of the sealing bag of B).
  • (A) is sectional drawing of the check valve which concerns on other embodiment of this invention
  • (B) is a top view of the check valve
  • (C) is a bottom view of the check valve.
  • (D) is structure explanatory drawing which shows the state which attached the check valve to the inside of a sealing bag
  • (E) is structure explanatory drawing which shows the state which attached the check valve to the exterior of a sealing bag.
  • (A) is a top view of a check valve according to still another embodiment of the present invention
  • (B) is a bottom view of the check valve
  • (C) is a sectional view of the check valve.
  • (D) is a structural explanatory view showing a state in which the check valve is attached to the inside of the sealing bag
  • (E) is a cross-sectional view of the check valve according to still another embodiment.
  • (A) It is sectional drawing of the check valve which concerns on other embodiment
  • (B) It is sectional drawing of the check valve which concerns on another embodiment. It is a longitudinal cross-sectional view in alignment with the longitudinal direction of the non-return valve which concerns on a prior art example.
  • the expression indicating the position and direction such as “front, back,” “up, down, left, right”, “vertical, horizontal”, “one, the other” described in the claims and specifications according to the present invention It is used for explanation and for specific reasons, and the applicant does not intend to limit the present invention to a positional relationship as described.
  • the expression “upstream, downstream” is based on the forward direction (the airflow direction during discharge along the longitudinal direction of the check valve V).
  • the sealed bag 1 can be used as a deaeration bag capable of discharging the gas present in the article storage unit 2 to reduce the volume.
  • a deaeration bag capable of discharging the gas present in the article storage unit 2 to reduce the volume.
  • a food pack for storing food used for discharging air present in the article storage unit 2 (the effect of maintaining freshness by storing with less air in the bag)
  • a compression bag for clothing (which can be reduced by reducing the air in the bag).
  • a bag that stores an article such as coffee beans or powder detergent in the article storage unit 2 and discharges the gas generated from the article to the outside of the bag, thereby suppressing expansion of the bag. Can also be implemented.
  • the check valve V is attached to the sealing bag 1 so as to allow ventilation between the article storage unit 2 and the outside of the bag in order to discharge the gas present in the article storage unit 2 to the outside of the bag.
  • one check valve V is provided for each sealing bag 1, but the present invention is not limited to this, and a plurality of check valves V may be provided for each sealing bag 1. .
  • the sealing bag 1 of this example is made of a flexible resin, and includes a front bag sheet 11 and a back bag sheet 12 arranged in a superposed manner in the front and back directions.
  • the portion other than the portion where the article storage port 1a and the check valve V are attached is airtightly separated from the outside of the bag.
  • the check valve V is attached by being sandwiched between the bag sheets 11 and 12 in the front and back direction. Note that the check valve V may be sandwiched only by one of the bag sheets 11 and 12 by folding one of the bag sheets 11 and 12 or the like.
  • the bag sheets 11 and 12 two identical resin sheets that are rectangular in a plan view are overlapped in the front and back direction, but the bag may be provided with a bag on the side surface, Other shapes other than a rectangle may be used.
  • the article storage port 1a is provided with a chuck having a well-known configuration so that it can be opened and closed in an airtight manner.
  • such an openable / closable chuck is not necessary for a bag for storing coffee beans or a sealed bag of the type in which the article storage port 1a is finally bonded and closed by a heat sealer.
  • the check valve V When the gas is discharged from the article storage portion 2 of the sealing bag 1, the check valve V allows the airflow to pass in the forward direction by opening and closing the airflow passage space 3 a that is a space through which the gas passes. The airflow in the suction direction can be blocked.
  • the check valve V of this example is a rectangle whose plan view (bottom view) has a longer longitudinal dimension than a width dimension.
  • the above airflow passes through.
  • the check valve V includes a flexible resin-made one-side basic sheet 31 and the other-side basic sheet 32, and a plurality of valve body sheets 4.
  • the base sheets 31 and 32 resin sheets having the same width are used, and are provided facing the front and back directions. Regarding the longitudinal dimension, the one-side base sheet 31 is longer than the other-side base sheet 32 (its operation and effect will be described later). And each of these foundation sheets 31, 32 is aligned on the upstream side (the left end side in FIG. 1) and overlapped in the front and back direction.
  • the valve body sheet 4 is sandwiched and overlapped between these basic sheets 31 and 32. And the both ends in the width direction of each foundation sheet 31 and 32 and the upstream edge in a longitudinal direction are adhere
  • a non-woven fabric is used as the one-side base sheet 31, so the airflow inlet in the check valve V becomes an airflow passage portion 31 a (described later) in the one-side basic sheet 31.
  • the air flow passage 31a is an inflow port 31a through which a positive air flow flows into the check valve V.
  • the outlet 32b from which the airflow in the forward direction flows out from the check valve V is the downstream end in the longitudinal direction of the check valve V (strictly speaking, the end side of the other side base sheet 32 and the one side base sheet). 31).
  • a point seal 5 is formed at the center in the width direction of the check valve V, and the base sheets 31 and 32 and the valve body sheet 4 are bonded.
  • the point seal 5 is formed as a short heat seal extending in the longitudinal direction of the check valve V. This point seal 5 is provided to rectify the airflow during discharge, but is not essential in the present invention and may not be formed.
  • At least two of the upstream valve body sheet 4a disposed on the upstream side and the downstream valve body sheet 4b disposed on the downstream side are set as one set.
  • a sheet (plastic film) having the same material and thickness is used as the other-side basic sheet 32 and the valve body sheet 4.
  • “self-adhesive type” sheets (films) are used, which are easy to be in close contact with the opposing sheet disposed oppositely.
  • a non-woven fabric is used as described later.
  • seat is not limited to the thing of this example, For example, when the base sheets 31 and 32 are exposed to the exterior of the sealing bag 1, the direction of the base sheet 32 is more than the valve body sheet
  • valve body sheets 4a and 4b constituting the one set are bonded only to the one-side base sheet 31.
  • the valve body sheet 4 may be bonded to the other side basic sheet 32.
  • each of the valve body sheets 4a and 4b constituting one set is bonded to at least the one-side base sheet 31.
  • the adhesion of the valve body sheets 4a and 4b constituting the one set to the one-side base sheet 31 is in series with the air flow direction in the valve when the valve body sheets 4a and 4b are discharged, and both are front and back. It does not overlap in the direction.
  • the upstream valve body sheet 4a is bonded to the one-side base sheet 31 on the upstream end 4a1 side. This bonded portion is indicated by s1 in FIG.
  • the downstream end 4a2 side of the upstream valve body seat 4a is movable with respect to the basic seats 31 and 32.
  • the downstream valve body sheet 4b is bonded on the downstream end 4b2 side. This bonded portion is indicated by s2 in FIG.
  • the upstream end 4 b 1 side of the downstream valve body seat 4 b is movable with respect to the base seats 31 and 32.
  • the downstream end 4 b 2 of the downstream valve body seat 4 b coincides with the downstream end 31 b of the one-side base seat 31.
  • valve body sheets 4a and 4b are arranged on the one-side base sheet 31 with their free ends facing each other.
  • seat 4a, 4b it is desirable to set it as the very small space
  • the other side base sheet 32 is flexible, when the air flow passage space 3a is opened as described above, the other side base sheet 32 is lowered on the lower side in FIG. Move to. Therefore, the airflow passage space 3a is not clogged in the middle, and smooth exhaust is performed.
  • the valve body sheets 4 a and 4 b are in close contact with the other side base sheet 32. That is, since contact is made at two locations, the certainty of the check effect is further enhanced as compared with the check valve configuration disclosed in Patent Document 1. Therefore, unlike the invention according to Patent Document 1, application of a low-viscosity inert liquid is not essential. Therefore, it is advantageous in terms of manufacturing cost of the check valve. However, a low-viscosity inert liquid (for example, silicone oil) may be applied for the purpose of further enhancing the certainty of the check effect.
  • a low-viscosity inert liquid for example, silicone oil
  • seat 4 is adhere
  • the one-side base sheet 31 to which the valve body sheets 4a and 4b constituting the one set are bonded has air permeability over the entire surface. More specifically, in this example, the air-permeable one side base sheet 31 is a non-woven fabric.
  • Part of the one-side basic sheet 31 is an airflow passage portion 31a through which the airflow at the time of discharge passes in the front and back direction.
  • the air flow passage portion 31a is a portion on the upstream side of the one-side base sheet 31 with respect to the upstream end 4a1 of the bonded upstream valve body sheet 4a in the front and back direction.
  • the check valve V is attached to the sealing bag 1 as for the valve support part 31b which is a part which overlaps with each valve body sheet
  • the airflow passage 31a is not a portion through which the airflow passes (however, the airflow passing between the end portions 4a2 and 4b1 of the valve seats 4a and 4b can pass as described above). .
  • the one-side base sheet 31 is a non-woven fabric
  • the surfaces facing the valve body sheets 4a and 4b are also rough in the valve support portion 31b. Therefore, even if each valve body sheet
  • the one-side basic sheet 31 has air permeability as in the present example. Only a part of the airflow passage 31a may be made to be able to be ventilated by using a sheet that is partially permeable or by bonding a sheet that has air permeability and a sheet that does not have air permeability. Even in such a case, a rough surface may be formed on the valve support portion 31b by corona discharge treatment or the like in order to easily separate the valve body sheets 4a and 4b from the one-side base sheet 31. Is desirable.
  • the downstream end 4b2 of the downstream valve body seat 4b in this example coincides with the downstream end 31b of the one-side base seat 31.
  • the one-side base sheet 31 has a longer longitudinal dimension than the other-side base sheet 32, and the base sheets 31 and 32 are aligned on the upstream side. Therefore, the non-contact part 4b3 in which the downstream part rather than the position which corresponds in the downstream end 32a of the other side basic sheet 32 in the front and back direction among the downstream valve body sheets 4b does not overlap with the other side basic sheet 32 in the front and back direction. It is said that.
  • the downstream end of the check valve V is aligned in the front and back direction without providing the non-contact portion 4b3 as described above, it is easy to be affected by the distortion (waving) generated in the sheet, and backflow is caused by capillary action. It is easy to happen. Since the above-mentioned distortion tends to become more prominent as it approaches the end side, in this example, the position where the other side sheet is in close contact with the one side sheet is shifted away from the end side, as shown in FIG. Since the side base sheet 32 and the downstream valve body sheet 4b are in close contact with each other, the influence of the strain is reduced. Thus, backflow can be effectively prevented also by providing the non-contact part 4b3.
  • the check valve V configured as described above has an upstream end located in the article storage portion 2 of the sealing bag 1 and a downstream end located outside the article storage portion 2. Although it is the positional relationship of the check valve V with respect to the sealing bag 1, although the downstream end of the check valve V may protrude from the edge of the sealing bag 1, in this example, it is shown to FIG. 3 (A) (B). As shown, the check valve V is attached so that the downstream end of the check valve V is located closer to the article storage portion 2 than the edge of the sealing bag 1. That is, the check valve V in this example is sandwiched between the bag sheets 11 and 12 as a whole.
  • the point seal 15 shown in FIGS. 3A and 3B is obtained by bonding the bag sheets 11 and 12 in order to gather the bag sheets 11 and 12 downstream of the check valve V. May be omitted.
  • the shape of the heat seal for bonding the bag sheets 11 and 12 has a step as shown in FIGS.
  • the article storage part 2 is formed as if it was partially cut away.
  • a check valve V is disposed in the cut-out portion.
  • the “notch” is formed in the corner of the sealing bag 1 having a rectangular shape in plan view so that the article storage portion 2 can be used as widely as possible.
  • the present invention is limited to this. Instead, for example, a “notch” may be formed in the center of the end of the sealing bag 1 according to a design requirement.
  • valve fixing seal 6 is formed so as to be adhered to the backside bag sheet 12 as shown in FIG. 4, whereby the airflow passage portion 31 a of the one-side base sheet 31 of the check valve V becomes the article storage portion. 2 is exposed to a space in which an article can be stored.
  • the valve fixing seal 6 is provided linearly at both ends in the width direction of the check valve V. As shown in FIG. As long as the check valve V can follow the deformation of the seat 12, the positional relationship, shape, and quantity may be variously changed.
  • valve fixing seal 6 is located in the airflow direction more than the upstream end 141 of the longitudinal seal 14. It is desirable to provide it on the downstream side. Since the airflow passage portion 31a is exposed as described above, the air present in the article storage portion 2 can be easily guided to the check valve V, and the exhaust can be smoothly performed.
  • a lateral seal 13 is formed on the sealing bag 1 by bonding (heat sealing) between the bag sheets 11 and 12.
  • the longitudinal seal 14 and the transverse seal 13 do not indicate the longitudinal and lateral positions of the sealing bag 1 and the bag sheets 11 and 12, but the longitudinal direction is the direction along the upstream and downstream of the check valve V.
  • the intersecting direction is the horizontal direction (transverse).
  • the lateral seal 13 is formed so as to cross the check valve V in the width direction, and more specifically, is formed on the downstream side of the upstream end 4a1 of the upstream valve body seat 4a. .
  • the lateral seal 13 is formed in a straight line shape in a plan view as shown in FIGS. 3A and 3B, but may be formed in a wavy shape. Such a wavy shape is advantageous because the exhaust pressure is applied unevenly in the width direction with respect to the check valve V when the air is discharged, and the airflow passage space 3a is easily opened.
  • the coating material for peeling 7 is applied to the inner surface of the other side basic sheet 32 in the portion where the horizontal seal 13 is formed, and the other side is heated by the heat when forming the horizontal seal 13 as a heat seal. It can be avoided that the base sheet 32 and the upstream valve body sheet 4a are lightly bonded to each other and cannot be exhausted smoothly.
  • a non-woven fabric may be attached to the inner surface of the other side base sheet 32.
  • a longitudinal seal 14 is formed in the sealing bag 1 by bonding (heat sealing) between the bag sheets 11 and 12.
  • the longitudinal seal 14 is a direction intersecting with the lateral seal 13 (a direction orthogonal in the present example), and the air flow direction at the time of discharge in the check valve V is set as a reference with respect to the lateral seal 14. It is extended to the upstream side.
  • the vertical seal 14 is sandwiched between the inner vertical seal 14a and the outer vertical seal 14b so as to sandwich the check valve V with a wider width than the check valve V. It forms so that it may become 1 set.
  • the outer vertical seal 14b formed on the right side of the check valve V in FIGS. 3A and 3B also serves as a side seal formed on the end side of the sealing bag.
  • the inner vertical seal 14a and the horizontal seal 13 are simultaneously formed by one seal bar (hot plate).
  • the upstream end 141 of the vertical seal 14 is located in the check valve V more than the lower end 31a1 of the portion through which air substantially passes, which is defined by the horizontal seal 13 in the airflow passage 31a of the one-side base sheet 31. It is located on the upstream side with respect to the direction of airflow at the time of discharge.
  • the upstream end 141 may be provided at a position higher than the upstream end of the check valve V in the airflow direction. desirable.
  • the upstream end 141 of the inner longitudinal seal 14a is substantially in the same position as the upstream end of the check valve V in the airflow direction.
  • the inner vertical seal 14a is formed continuously in the illustrated vertical direction.
  • a ventilation gap 14c indicated by a broken line in FIG. 3A may be provided, or FIG.
  • the inner longitudinal seal 14a may be intermittent.
  • a bag path-like portion 21 that can be deformed into an arch shape is formed, and the air present in the left portion of the inner vertical seal 14a in the article storage portion 2 is vented to the ventilation gap 14c. It is also possible to guide to the check valve V through the exhaust, and the exhaust can be made smooth.
  • a bag path portion 21 is formed by the horizontal seal 13 and the vertical seal 14. As shown in FIG. 4, the bag path portion 21 has an arched cross section as shown in FIG. 4 when the article storage portion 2 is pressed by hand or when the internal pressure increases due to the generation of gas from the stored article. Swell. Since the check valve V is bonded to the backside bag sheet 12 as described above, the check valve V is along the inner surface of the bag path portion 21 that is arched as described above.
  • the air in the article storage unit 2 is first guided to the bag path 21 and then sequentially discharged out of the bag through the airflow passage 31a.
  • a bag path portion 21 is not formed, there may be a case where exhaust between the bag sheets 11 and 12 does not sufficiently spread even during exhaustion, resulting in exhaust failure.
  • the formation of the pouch-like path portion 21 eliminates such a situation and makes it possible to exhaust more smoothly, thereby reducing the “initial pressure”.
  • the check valve is difficult to open, and in order to reduce the above-mentioned “initial pressure”, a check valve is provided at the end of the sealed bag, and the basic seat and valve of the check valve are intentionally provided. The body sheet may be distorted. Then, the “initial pressure” can be reduced, but on the other hand, there is a problem that backflow easily occurs.
  • the check valve V of the present invention is capable of performing smooth exhaustion alone, and the mounting position on the sealing bag 1 is not limited, and the degree of freedom in designing the sealing bag 1 is increased. Can do.
  • the check valve V As the basic sheets 31 and 32 and the valve body sheet 4, long sheets that are continuously supplied in the longitudinal direction are used. And after each valve body sheet
  • valve body sheet 4 supplied as a single long sheet is first overlapped with the one-side base sheet 31 and then overlapped.
  • a cutting blade may be applied to the valve body sheet 4 and cut into two in the width direction to form the valve body sheets 4a and 4b.
  • the check valve V is manufactured continuously in the width direction and is individually cut when attached to the sealing bag 1. However, you may attach to the sealing bag 1 as a continuous valve with several continuous in the width direction.
  • the manufacturing method of this sealing bag 1 includes the step of sandwiching the check valve V between the bag sheets 11 and 12, the step of forming the lateral seal 13 by bonding the bag sheets 11 and 12, Similarly, it has a step of forming the longitudinal seal 14 by bonding the bag sheets 11 and 12. With this manufacturing method, a sealed bag with a check valve can be manufactured continuously.
  • FIG. 5A Another embodiment is not limited to the bag as shown in FIG. 3A, but is a so-called “vertical pillow” type often used for packaging coffee beans as shown in FIG. 5A.
  • the check valve V can be attached to the sealing bag 201.
  • each figure of FIG. 5 has shown the state at the time of article storage.
  • FIG. 5C the upper side of the figure is the inside of the bag, and the lower side of the figure is drawn as the outside of the bag.
  • one bag sheet 211 is folded at the crease lines 212, 212 on the left and right sides of the bag, and the edges of the bag sheet 211 are aligned on the back side.
  • the check valve V is sandwiched between the opposite ends, and the seal formed thereby is used as the lateral seal 13 described above.
  • the bag sheets 211 are bonded together so as to enter the inside of the sealing bag 201 with respect to the lateral seal 13 to form a seal.
  • This seal functions as the vertical seal 14 described above.
  • an auxiliary seal 16 is provided at the upstream end of the vertical seal 14 in the direction opposite to the check valve V and extending in parallel with the horizontal seal 13.
  • a bag path portion 21 is formed by the horizontal seal 13 and the vertical seal 14, and the internal pressure of the bag is reduced. When it rises, it swells so that the cross section of this bag path portion 21 becomes an arch shape (see FIG. 4). Therefore, similarly to the above, even in the sealed bag 201, the exhaust can be performed more smoothly and the “initial pressure” can be reduced. Therefore, when the stored item is a thing such as coffee beans that always generates gas (such as carbon dioxide), the generated gas is not easily discharged out of the bag and remains in the bag, so that the sealed bag 201 is There is no such thing as swelling up.
  • the check valve V is provided at the bottom of the sealing bag 1.
  • the position where the check valve V is provided can be changed as appropriate.
  • the center part (front surface or back surface) of the bag 1 may be used.
  • FIG. 6 (A) is an example in which the side of the sealing bag 1 is provided at a position near the article storage port 1a.
  • both the bag sheets 11 and 12 are recessed in the lateral direction to form a recess 211 at a position close to the article storage port 1a provided with the chuck, and are mounted horizontally with the check valve V interposed therebetween. is there.
  • both bag sheets 11, 12 are sealed,
  • the seal at the back of the recess 211 is the aforementioned lateral seal 13.
  • the liquid material when the liquid material is stored or when the food from which the juice comes out is stored, the liquid material accumulates at the bottom of the bag. Therefore, by providing a check valve V near the article storage port 1a, The check valve V can be adversely affected by the liquid material.
  • FIGS. 6B and 6C are examples provided in the central portion (front and back) of the sealing bag 1.
  • one bag sheet 11 is divided into a first sheet 11a and a second sheet b.
  • the edges of the first sheet 11a and the second sheet b are sealed to form a single bag seal.
  • a check valve V is sandwiched between the first sheet 11a and the second sheet 11b. Install.
  • the seal between the first sheet 11a and the second sheet 11b is a lateral seal 13 that crosses the check valve V.
  • the downstream side of the check valve V is located on the outer surface (outside of the bag) of one sheet (second sheet 11b), and the check is placed on the inner surface (inside of the bag) of the other sheet (second sheet 11b).
  • the upstream side of the valve V is located.
  • the check valve V can be attached regardless of the front and back sides, but in this example, the one-side basic sheet 31 made of a nonwoven fabric or the like is disposed on the inner surface side of the bag.
  • the check valve V is attached so that the one-side basic sheet 31 is located on the side facing the first sheet 11a, when the food is stored in the sealing bag 1 and heated in the microwave, it expands by heating.
  • the one side basic sheet 31 of the check valve V is pressed against the first sheet 11a by the air, and there is a possibility that the air cannot be discharged well, but by arranging the one side basic sheet 31 inside the bag, The expanded air in the bag can be discharged well.
  • the heat seal portion of the lateral seal 13 which is necessary for adhering the check valve V to the sealing bag 1 and attaching it as in the previous example becomes unnecessary.
  • a lower pressure for example, storing articles that generate gas, such as coffee beans and powder detergent, and discharging the gas generated from these articles to the outside of the bag to expand the bag
  • the initial pressure of the gas to be discharged can be lowered and discharged.
  • the second sheet 11b is desirably a sheet that can be heat-sealed on both sides. Specifically, it is desirable to use a co-pressing film made of a double-sided polyethylene film.
  • the second sheet 11b is heat-sealed with the first sheet 11a including the lateral seal 13 on one side (the outer side in the figure), and the other bag sheet 12 on the other side (the inner side in the figure). This is because it is sealed.
  • seat which can heat seal only one side, as shown in the example of FIG. 5, it can also heat-seal by folding up the edge to seal. Further, by using a double-sided heat seal made of a double-sided polyethylene film or the like, the folding in the example of FIG. 5 becomes unnecessary.
  • FIG. 7 shows another embodiment.
  • a part of the check valve V in FIG. 1 is changed.
  • the changed part will be mainly described, and portions not described are the same as those in the check valve V in FIG. To do.
  • the one-side basic sheet 31 is composed of two types of sheets.
  • the sheet 31a located on the upstream side of the one-side base sheet 31 is an airflow passage portion 31a, as in the example of FIG. 1, and is configured by a sheet having air permeability such as a nonwoven fabric.
  • the downstream sheet 31d is composed of an airtight sheet 31d. The ends of the airflow passage portion 31a and the airtight sheet 31d are bonded to the upstream end 4a1 of the upstream valve body sheet 4a at the bonding portion s1.
  • the other side base sheet 32 is made shorter than the one side base sheet 31 to create an air passage.
  • the other side base sheet 32 and the one side base sheet 31 have the same size, The entire periphery was bonded to form an all-around bonded portion s3.
  • the other-side basic sheet 32 employs an airtight sheet as in the example of FIG. 1, but forms an outlet 32b having an appropriate shape such as a slit to serve as an outlet on the downstream end side.
  • the outflow port 32b is disposed on the downstream side (right side in the drawing) with respect to the downstream end 4a2 of the upstream valve body seat 4a and the upstream end 4b1 of the downstream valve body seat 4b.
  • the check valve V can be disposed inside the sealed bag 1 as shown in FIG.
  • the check valve V is disposed so as to cover the bag vent 17 provided in the back bag sheet 12 of the sealed bag 1 from the inside, and the entire periphery thereof is bonded to the back bag sheet 12.
  • This adhesion can be shared with the all-around adhesion part s3 described above, or may be sealed separately.
  • the outflow port 32b and the bag vent 17 are provided at the same position, but may be provided at different positions as long as they are within the above-mentioned all-around adhesive portion s3.
  • the air in the sealed bag 1 When the air in the sealed bag 1 is discharged, the air enters the check valve V from the airflow passage 31a, and flows out from the bag vent 17 through the outlet 32b.
  • the inside of the check valve becomes negative pressure, and the upstream side valve body sheet 4a and the downstream side valve body sheet 4b come into close contact with the other side base sheet 32 to close the flow path.
  • this check valve V can also be arrange
  • the check valve V is disposed so as to cover the bag vent 17 provided in the backside bag sheet 12 of the sealed bag 1 from the outside, and the entire periphery thereof is bonded to the backside bag sheet 12.
  • This adhesion can be shared with the all-around adhesion part s3 described above, or may be sealed separately.
  • the airflow passage portion 31a and the bag vent 17 are provided at the same position, but may be provided at different positions as long as they are within the range of the all-around adhesive portion s3.
  • the air in the sealed bag 1 When the air in the sealed bag 1 is discharged, the air enters the check valve V from the bag vent 17 through the airflow passage 31a and flows out from the outlet 32b.
  • the inside of the check valve becomes negative pressure, and the upstream side valve body sheet 4a and the downstream side valve body sheet 4b come into close contact with the other side base sheet 32 to close the flow path.
  • the check valve V and the bag vent 17 can be disposed on the front bag sheet 11.
  • each sheet is substantially in contact with each other, and a small interval is opened only when there is air circulation. It ’s not too much.
  • the check valve V of the present application can be provided with bending seals s4 and s5 so as to form a zigzag flow path in plan view.
  • FIG. 7 This example is a partial modification of the example of FIG. 7, and only the changed part will be described, but the parts other than those described are the same as the example of FIG.
  • the check valve V of this example makes the other side basic sheet 32 shorter than the one side basic sheet 31, and provides a space between the other side basic sheet 32 and the all-around adhesive portion s ⁇ b> 3.
  • the outlet 32b is possible to employ the outlet 32b as in the example of FIG.
  • the bent seals s4 and s5 are formed over substantially the entire length from the upstream end to the downstream end of the check valve V, and in the front and back direction, the one side base sheet 31, the valve body sheet 4 and the other side base sheet 32 are formed.
  • the three parties are bonded.
  • the check valve V employs a breathable sheet such as a non-woven fabric as in the airflow passage portion 31a of FIG. 7B.
  • FIG. 8A which is the plan view, unlike FIG. 7B, the mesh is not drawn.
  • both bent seals s4 and s5 are formed, and the gap between the bent seals s4 and s5 is spread in a funnel shape toward the upstream side (left side in the figure) of the airflow passage portion 31a. Gradually increases. As a result, air enters the check valve V well from the airflow passage portion 31a.
  • both the bending seals s 4 and s 5 are bent or curved while maintaining a narrow interval, and are directed to the downstream side (right side in the drawing). Both bent seals s4 and s5 have different lengths, and one bent seal s4 disappears when it enters the downstream valve body sheet 4b beyond the upstream valve body sheet 4a.
  • the other bent seal s5 extends to the downstream end of the other side base sheet 32 and disappears. Bending seals s4 and s5 are not formed at the outlet 32b between the downstream end of the other-side base sheet 32 and the all-around adhesive portion s3. This is to ensure that air is discharged from the outlet 32b.
  • the above description is merely an example of the bent seals s4 and s5.
  • the upstream side is closer to the upstream end. As long as the flow path is widened near the downstream end, the flow of air inside and outside the check valve V can be made smooth.
  • the flow path is between one bent seal and the all-around adhesive portion s3.
  • the number of bending seals can be three or more, and it can be used in combination with a point seal or the like.
  • the shapes of the one-side basic sheet 31 and the other-side basic sheet 32 may be cut along the shapes of the bent seals s4 and s5, and the bent seals s4 and s5 also serve as a part of the all-around adhesive portion s3. It may be a thing.
  • an inert substance 8 such as a silicon liquid is disposed in the middle of the flow path between the bent seals s4 and s5 and between the valve body sheet 4 and the other side base sheet 32. is doing.
  • the inert substance 8 such as a silicon liquid is disposed only between the upstream valve body sheet 4a and the other side base sheet 32, but the downstream side valve body sheet 4b and the other side base sheet 32 Can also be placed between.
  • This check valve V can be arranged inside or outside the sealing bag 1 as in the example of FIG. 7, and prevents the back flow of fluid by the same action as the check valve V of FIG. Only allow fluid flow in one direction (in this example from the inside to the outside of the bag).
  • FIG. 8D shows an example in which the outer side of the bag sheet 12 of the sealed bag 1 is attached. Since the check valve V is provided with the bent seals s4 and s5 as described above, the flow path of the air is a labyrinth, so even if air flows in the forward direction, a slight resistance is obtained. Occurs. The degree of resistance can be variously changed according to the shape, size, and length of the bent seals s4 and s5, and can be adjusted according to the application.
  • this check valve V when this check valve V is used in a sealed bag for storing food, vapor generated from the food when the microwave oven is thawed or heated may be released to the outside of the sealed bag by this check valve V.
  • the provision of the bent seals s4 and s5 provides resistance to air discharge, and the steam is gradually discharged out of the bag. As a result, the food can be steamed and a more delicious thawing cooking in a microwave oven becomes possible.
  • the shape and size (length and width) of the bent seals s4 and s5 can be appropriately changed according to the required air discharge amount.
  • FIG. 9A shows an example in which a valve body sheet 91 separate from the valve body sheets 4a and 4b is provided.
  • the new valve body seat 91 is disposed between the valve body seats 4a and 4b and the other side basic seat 32 inside the check valve V, and at least one of the valve body seats 4a and 4b.
  • the new valve body sheet 91 and the both valve body sheets 4a and 4b jointly perform fluid passage and backflow prevention.
  • This new valve body seat 91 can also be employed in other embodiments of the present invention.
  • the one-side basic sheet 31 is divided into an airflow passage 31a such as a nonwoven fabric and an airtight sheet 31d, but as shown in FIG. It is also possible to configure the entire one side base sheet 31 with a breathable material such as a non-woven fabric and cover only the downstream side portion with an airtight covering sheet 92. Occurrence of the situation that the valve body sheets 4a and 4b are unnecessarily closely attached to the one-side basic sheet 31 and do not serve as a check valve by configuring the entire one-side basic sheet 31 with a nonwoven fabric or the like. Can be prevented.
  • the thickness of the covering sheet 92 can be set freely, but by using a relatively thick hard sheet, bending or twisting occurs when the check valve V is pushed by the contents of the sealing bag. Can be prevented, and the valve can be protected and its function can be reliably exerted.
  • the sealed bag 1 can be made superior to the conventional one. In particular, when the items stored in the sealed bag 1 are prone to deterioration such as food, the exhaust of the article storage unit 2 can be smoothly performed, so that the stored item has an antioxidant effect and contributes to maintaining freshness. be able to.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Check Valves (AREA)
  • Valve Housings (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un clapet anti-retour caractérisé par une haute fiabilité d'efficacité de la retenue et dont les coûts de production ont été maintenus aussi faibles que possible. L'invention concerne également un sac d'isolement. Un clapet anti-retour (V) est muni de feuilles (31, 32) de base en résine souple et d'une pluralité de feuilles (4) de corps de clapet. Parmi lesdites feuilles (4) de corps de clapet, au moins une feuille (4a) de corps de clapet amont et une feuille (4b) de corps de clapet aval sont formées de manière à constituer un ensemble et collées à l'une (31) des feuilles de base. Ladite feuille (4a) de corps de clapet amont est collée à ladite feuille (31) de base à l'extrémité amont (4a1), tandis que l'extrémité aval (4a2) est capable de se déplacer par rapport auxdites feuilles (31, 32) de base. Ladite feuille (4b) de corps de clapet aval est collée à l'extrémité aval (4b2), tandis que l'extrémité amont (4b1) est capable de se déplacer par rapport auxdites feuilles (31, 32) de base. Dans lesdites feuilles (4a, 4b) de corps de clapet, les extrémités (4a2, 4b1) qui sont capables de se déplacer par rapport auxdites feuilles (31, 32) de base sont capables d'entrer en contact avec l'autre feuille (32) de base.
PCT/JP2010/054642 2009-10-30 2010-03-18 Clapet anti-retour, sac d'isolement et procédé de production de ceux-ci Ceased WO2011052246A1 (fr)

Priority Applications (3)

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CN2010800455628A CN102548858B (zh) 2009-10-30 2010-03-18 止回阀和密封袋以及其制造方法
JP2011538272A JP5433873B2 (ja) 2009-10-30 2010-03-18 逆止弁と密封袋及びこれらの製造方法
US13/504,040 US20120213453A1 (en) 2009-10-30 2010-03-18 Check valve, sealing bag, and production methods for both

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JP2009249844A JP4436925B1 (ja) 2009-10-30 2009-10-30 逆止弁及び密封袋、及び逆止弁と密封袋の製造方法
JP2009-249844 2009-10-30

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JP4761408B1 (ja) * 2010-12-29 2011-08-31 株式会社アシスト 逆止弁及びこれを備えた収納体
JP6020894B2 (ja) * 2012-07-31 2016-11-02 株式会社Ｎｅｗ ＩＷＡＳＨＯ 逆止弁を備えた包装体と、その製造装置並びにその製造方法
JP2017145028A (ja) * 2016-02-17 2017-08-24 株式会社フジシール 粉粒体入包装体および粉粒体用包装袋
JP2017176480A (ja) * 2016-03-30 2017-10-05 株式会社インフォム 換気靴及び逆止弁
WO2019009139A1 (fr) * 2017-07-04 2019-01-10 株式会社柏原製袋 Soupape de fermeture constituée d'une feuille et sac avec soupape de fermeture
JP7206745B2 (ja) * 2018-09-25 2023-01-18 大日本印刷株式会社 弁装置付き包装体及び蓄電デバイス
JP6604414B1 (ja) * 2018-10-18 2019-11-13 大日本印刷株式会社 蓄電デバイス

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