WO2012090337A1 - 逆止弁及びこれを備えた収納体 - Google Patents
逆止弁及びこれを備えた収納体 Download PDFInfo
- Publication number
- WO2012090337A1 WO2012090337A1 PCT/JP2010/073830 JP2010073830W WO2012090337A1 WO 2012090337 A1 WO2012090337 A1 WO 2012090337A1 JP 2010073830 W JP2010073830 W JP 2010073830W WO 2012090337 A1 WO2012090337 A1 WO 2012090337A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- check valve
- sheet
- valve seat
- bag
- Prior art date
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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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/22—Details
- B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
- F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
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- 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]
-
- 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
-
- 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
- Y10T137/7888—With valve member flexing about securement
- Y10T137/7891—Flap or reed
Definitions
- the present invention relates to a check valve and a storage body provided with the check valve.
- sealing bag that can seal an article storage unit having a space for storing articles such as clothes and foods 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 inventor of the present application has made many inventions related to the check valve, and there is a check valve described in Patent Document 1 as one conventional example.
- the check valve includes a flexible resin exterior sheet and a plurality of valve sheets.
- the valve sheet includes at least two sheets of an upstream valve sheet and a downstream valve sheet. Bonded to the side exterior sheet.
- the upstream valve seat is bonded to the one-side exterior sheet on the upstream side, and the downstream side is a movable part for the exterior sheet.
- the downstream valve seat is bonded on the downstream side, and the upstream side is a movable part with respect to the exterior sheet.
- the movable portion (that is, the upstream side of the upstream valve seat and the upstream side of the downstream valve seat) can be brought into close contact with or separated from the other side exterior sheet.
- Each valve seat constituting the one set is bonded to one side exterior sheet, and this one side exterior sheet is composed of a non-woven fabric having air permeability over the entire surface.
- the check valve has a non-woven fabric portion positioned inside the sealing bag as an inlet for forward flow to the check valve, and an outlet from the check valve is positioned outside the sealing bag. Used.
- non-woven fabric which has air permeability is used also for the check valve described in patent document 2 and patent document 3, and the part provided with this nonwoven fabric is coordinated in the inside of the sealing bag as an inlet during forward flow.
- the outlet of the check valve is positioned outside the sealing bag and attached to the sealing bag.
- the check valves disclosed in these patent documents can be attached to the inside and outside of the sealing bag.
- the check valve is attached to the sealing bag so that the movable part of the valve seat is located substantially outside the sealing bag.
- the inventor of the present application tried to improve these check valves and tried to develop a check valve in which the entire check valve could be arranged inside the sealing bag.
- the entire check valve is arranged inside the sealed bag, there arises a problem that the check valve does not work well during forward flow. Specifically, at the time of forward flow, the pressure inside the sealing bag increases, and the fluid flows from the inside of the sealing bag to the outside through the check valve, while the check that stops the flow of fluid from the outside to the inside of the sealing bag.
- each sheet constituting the check valve such as the valve seat receives pressure in the thickness direction, and the entire check valve is pressed against the bag sheet of the sealed bag. For this reason, the check valve cannot be opened, and the fluid may not flow out through the check valve.
- an object of the present invention is to provide a check valve that allows a fluid to satisfactorily open and pass during forward flow.
- the purpose is to provide a check valve.
- it aims at provision of the storage body which has a favorable fluid passage function by providing this check valve.
- a plurality of sheets are stacked to form a valve flow path that is a space through which a fluid passes between the sheets, and the valve flow path is opened and closed to flow from the inlet. It allows passage of fluid in the forward direction to the outlet and blocks fluid in the reverse direction from the outlet to the inlet, and includes a plurality of foundation sheets, one foundation sheet and the other foundation sheet, At least one valve seat disposed between the base sheets, and the valve seat includes a fixing portion bonded to at least the one side base sheet, and the fixing portion is bonded.
- valve seat is configured such that a portion on the downstream side of the fixed portion can be separated from the one-side base sheet, and the valve seat and the valve seat Placed on top of each other In the check valve in which the valve passage is the valve passage between the valve seat and the other valve seat, the other side valve seat or the other valve seat disposed to overlap the valve seat constituting the valve passage
- at least one of the valve seat is formed with a fluid introduction recess that is recessed in the thickness direction, and the fluid introduction recess is formed by the fixing portion or the fixing portion of the valve seat in the vertical direction of the flow path. Is provided at the upstream position.
- the inflow port is located on the front surface or the back surface of the check valve, and the outflow port is located on the back surface or the front surface opposite to the inflow port,
- the back is along the surface or the inner surface of the storage body, the entire circumference of the check valve is bonded to the storage body with a storage body fixing seal, and the storage from the inlet to the outlet through the valve flow path It can be implemented as being characterized by being located in a region surrounded by the body fixing seal.
- a part of the one-side base sheet is a fluid passage part having air permeability through which the airflow in the forward direction passes in the front and back directions, and the fluid passage part has an airflow in the forward direction.
- the fixing portion includes a first valve fixing seal and a second valve fixing seal formed downstream thereof, and the fluid introduction recess is not formed in the second valve fixing seal.
- the first valve fixing seal is provided at a position including the first valve fixing seal.
- the present invention is a storage body to which the check valve is attached, and the storage body includes a flexible resin bag sheet, and the entire periphery of the check valve is inside or outside the bag sheet.
- a storage body that is bonded to a container.
- the present invention has been able to provide a check valve that allows a fluid to open with good opening during forward flow.
- a check valve that allows a fluid to open with good opening during forward flow.
- the fluid can open the valve well and pass through. Is.
- this check valve it is possible to provide a storage body having a good fluid passage function.
- FIG. 3 is a sectional view taken along line III-III. It is a front view of the state which removed the 1st foundation sheet of the check valve.
- A) is a front view of the check valve according to the second embodiment, and (B) is a longitudinal sectional view thereof.
- FIG. 5 is a cross-sectional view showing another structure different from FIG. 1, which is a structure in which a check valve according to an example of the first embodiment of the present invention is attached to a storage bag.
- 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 shows only a relative positional relationship, and does not intend to limit to these aspects.
- the expression “upstream, downstream” is based on the forward direction (the direction in which fluid is allowed to pass when the check valve is used, in other words, the flow direction when the valve opens).
- the check valve 10 according to this embodiment is attached to a bag 1a which is a storage body.
- the bag 1a is formed by forming a bag sheet 1b having flexibility and airtightness into a bag shape by welding, bonding of an adhesive, and the like, and a storage object such as coffee beans is stored therein. Since the gas is emitted from the coffee beans, when the coffee beans are stored in a sealed bag, a check valve may be used to discharge the generated gas out of the sealed bag. Then, the most suitable check valve 10 for this coffee bag is proposed.
- the check valve 10 is attached to the inner side of the bag sheet 1b in alignment with the inner side of the bag 1a, more specifically, the opening 1c provided in the bag sheet 1b.
- the front side of the check valve 10 (the front surface in FIG. 2 (A), the upper surface in (B), the right surface in (C) and (D)) is stored on the back surface of the bag sheet 1b.
- the body fixing seal 84 is fixed by welding or bonding with an adhesive.
- the check valve 10 is attached by sealing the entire periphery of the check valve 10 on the upper, lower, left and right sides to the bag sheet 1b by the housing fixing seal 84 as described above.
- the fluid in the bag 1a that has flowed in passes through the valve flow path 13 in the check valve 10 and flows out of the bag 1a from the opening 1c through the outlet 12 on the lower front side.
- the upstream inflow port 11 is arranged on the upper side
- the downstream outflow port 12 is arranged on the lower side. Accordingly, in all of the following descriptions, unless otherwise specified, the words indicating “up” such as “up”, “up”, and “upper” can be read as “upstream” and “lower” such as “down”, “down”, and “lower”. Can be read as “downstream”.
- the check valve 10 includes three basic sheets, that is, a sealing other side basic sheet 21, a sealing one side basic sheet 31, and a breathable one side basic sheet 41, and one valve sheet. 61 and one auxiliary sheet 51 are provided.
- the horizontal widths of these five sheets are set to be equal to each other.
- the thickness and interval of each sheet are drawn larger than actual, but actually, the sheets are stacked in contact with each other.
- the base sheet constitutes the outer surface that becomes the casing of the check valve 10, and two sheets of the airtight other side base sheet 21 and the airtight one side base sheet 31 are air permeable (representing fluid permeability).
- the air-permeable one-side base sheet 41 is made of a breathable sheet such as a nonwoven fabric or a woven fabric.
- the valve seat 61 is movably attached to open and close the valve, and is composed of a synthetic resin film alone or a composite. Although it is desirable that the valve seat 61 is thinner than the hermetic other side base sheet 21 and the hermetic one side base sheet 31 in terms of movement, it should not be understood as being limited thereto. .
- the auxiliary seat 51 is provided to maintain the balance of the shape and thickness of the valve seat 61 in relation to the valve seat 61, and it is desirable to use the same material and the same thickness as the valve seat 61. It should not be understood in a limited way. Next, the positional relationship and adhesion state of these sheets will be described.
- the airtight one side base sheet 31 will first be arrange
- the valve seat 61 and the auxiliary seat 51 are disposed on the front side of the breathable one-side base sheet 41, and the hermetic other-side base sheet 21 is disposed on the front side.
- the left and right ends of these seats are joined to each other by side seals as in this type of check valve. This bonding is preferably performed by welding such as heat sealing or ultrasonic sealing, but may be performed by an adhesive (hereinafter, the same applies to other seals as well as this seal).
- this side seal may be one, in this example, two seals of a first side seal 81 and a second side seal 82 are provided. A side non-sealed portion 83 is formed between the first side seal 81 and the second side seal 82. Then, a storage body fixing seal 84 for the bag sheet 1b is applied to the side non-sealed portion 83, and the check valve 10 is fixed to the bag sheet 1b.
- the air-permeable one-side basic sheet 41 is arranged over substantially the entire length of the check valve 10, and the ventilation
- the sealing one-side base sheet 31 is arranged on the back side of the one-side base sheet 41.
- the hermetic one-side base sheet 31 is set to have a vertical length shorter than that of the breathable one-side base sheet 41.
- the airtight one-side base sheet 31 is not overlapped and the air-permeable one-side base sheet 41 is exposed.
- the air-permeable one-side base sheet 41 is air-permeable as described above, and this exposed portion is a fluid passage portion that becomes the inflow port 11 into the check valve 10.
- the airtight one-side base sheet 31 is superimposed on the lower part of the air-permeable one-side base sheet 41, and the upper part of the air-tight one-side base sheet 31 is air-permeable by the first valve fixing seal 73 and the second valve fixing seal 74. It is fixed to the side base sheet 41.
- the first valve fixing seal 73 and the second valve fixing seal 74 connect the left and right sides of the bag (between the left and right side seals).
- at least the left second side seal 82 and the right second side seal By sealing between 82, it becomes a boundary of the inflow port 11 and the airtight one side base sheet 31.
- the first valve fixing seal 73 and the second valve fixing seal 74 are provided, but at least one is sufficient.
- the whole surface of the airtight one-side base sheet 31 in the lower part (downstream side) than the boundary part may be sealed with the air-permeable one-side base sheet 41.
- the lower part of the airtight one-side base sheet 31 is sealed to the lower part of the air-permeable one-side base sheet 41 by an auxiliary fixing seal 75, a second lower end seal 76, and a first lower end seal 77.
- the auxiliary fixing seal 75, the second lower end seal 76, and the first lower end seal 77 also connect the left and right sides (between the left and right side seals) of the bag.
- at least the space between the left second side seal 82 and the right second side seal 82 is sealed.
- a portion between the second lower end seal 76 and the first lower end seal 77 is a non-sealed portion at the lower end.
- a storage body fixing seal 84 for the bag sheet 1b is applied to the non-sealed portion, and the check valve 10 is fixed to the bag sheet 1b.
- the airtight one-side base sheet 31 covers a portion other than the inlet 11 of the air-permeable one-side base sheet 41, and as shown in FIG. You may implement without providing the lower part of the property one side base sheet 41.
- FIG. The airtight one-side base sheet 31 and the air-permeable one-side base sheet 41 may be provided separately in the upper and lower sides.
- the original purpose of the breathable one side base sheet 41 is the filter function. Specifically, fine particles such as coffee bean fragments are prevented from entering the check valve 10 while ensuring the air permeability of the inlet 11.
- the contents of the bag 1a are an article that does not cause debris or the like, or a simple liquid or gas, as shown in FIG.
- valve seat 61 will be described.
- the valve seat 61 is sealed at its upper part (preferably the uppermost end) by a breathable one side base sheet 41.
- the first valve fixing seal 73 and the second valve fixing seal 74 are fixed.
- the first valve fixing seal 73 and the second valve fixing seal 74 serve as the fixing portion 14 described in the claims.
- the valve seat 61 and the sealing one-side base sheet 31 do not have to be bonded with the same seal, and may be bonded with different seals.
- the lower part of the valve seat 61 is not bonded to the breathable one side base sheet 41 and can be separated from the breathable one side base sheet 41.
- both sides of the valve seat 61 are fixed by the first side seal 81 and the second side seal 82 described above. It is possible to leave.
- the auxiliary seat 51 is provided to balance the laminated structure and the seal in relation to the valve seat 61 and is sealed to the breathable one side base seat 41.
- the auxiliary fixing seal 75, the second lower end seal 76, and the first lower end seal 77 are fixed.
- the auxiliary sheet 51 and the airtight one-side base sheet 31 do not have to be bonded with the same seal, and may be bonded with different seals.
- the upper end of the auxiliary sheet 51 is not bonded to the breathable one side base sheet 41 and can be slightly separated from the breathable one side base sheet 41, but the uppermost end is sealed with an auxiliary fixing seal 75.
- the air-permeable one-side base sheet 41 may be integrated.
- a gap is provided between the upper end of the auxiliary seat 51 and the lower end of the valve seat 61.
- the upper end of the auxiliary seat 51 and the lower end of the valve seat 61 may overlap, the upper end of the auxiliary seat 51 should be located on the back side of the lower end of the valve seat 61.
- the airtight side foundation sheet 21 will be described.
- the upper part of the airtight base sheet 21 is sealed to the upper part of the air-permeable base sheet 41 by a first upper end seal 71 and a second upper end seal 72.
- the first upper end seal 71 and the second upper end seal 72 also connect the left and right sides of the bag (between the left and right side seals).
- the space between the second side seal 82 and the right second side seal 82 is sealed.
- a portion between the first upper end seal 71 and the second upper end seal 72 is a non-seal portion.
- a storage body fixing seal 84 for the bag sheet 1b is applied to the non-sealed portion, and the check valve 10 is fixed to the bag sheet 1b.
- the bag sheet 1b is summarized as follows: the bag sheet 1b is located between the left and right first side seals 81 and the second side seal 82, between the lower first lower end seal 77 and the second lower end seal 76, and above. It seals between the first upper end seal 71 and the second upper end seal 72, and seals the entire circumference of the check valve 10 on the upper, lower, left and right sides to the bag sheet 1b.
- the fluid in the bag 1a that has flowed in through the valve passes through the valve flow path 13 in the check valve 10 and flows out of the bag 1a through the opening 1c through the outlet 12 on the lower front side.
- the valve flow path 13 is formed between the airtight other-side base sheet 21 and the valve sheet 61 facing the same.
- the hermetic other-side base sheet 21 and the valve seat 61 are normally overlapped, but the fluid flowing in from the inflow port 11 moves the valve seat 61 to the back side, and the valve flow path 13 is opened. Leaks. Even if the fluid tries to flow in the opposite direction, the valve seat 61 and the other side of the sealing property are compared with the valve seat 61 that is dead due to the fixing portion 14 and the inlet 11 and the sealing one side base sheet 31. Since the space between the base sheet 21 is negative, the valve seat 61 is brought into close contact with the airtight base sheet 21 and the valve flow path 13 is closed.
- the length of the other sealing base 21 is set on condition that the above valve function is fulfilled, and the lower end is below the fixed portion 14 and is in close contact with the valve seat 61. Is set at a position where the safety can be secured.
- the lower end of the hermetic other-side base sheet 21 is set below the lower end of the valve seat 61, but it may be at the same position or above the valve seat 61.
- the lower end of the airtight other side base sheet 21 exists in the substantially the same position as the upper end of the auxiliary
- the opening 1 c is provided at substantially the same position as the lower outlet 12, but the opening 1 c may be provided at any position as long as it is inside the container fixing seal 84.
- the bag sheet 1b can also be used as the airtight other-side base sheet 21 without providing the airtight other-side base sheet 21, but in this case, since the opening 1c serves as the outlet 12, 1c is provided below the fixing portion 14 and at a position where the adhesion between the valve seat 61 and the bag sheet 1b can be secured.
- the check valve 10 having the above structure is used by sealing the entire circumference with the bag sheet 1b, it is not fixed to the bag 1a at the position of the fixing portion 14 by heat sealing or the like as in the above-mentioned patent document. It is not necessary to provide welding prevention means such as a heat-resistant ink or a heat-resistant plate for preventing the heat-sealing between the hermetic other-side base sheet 21 and the valve seat 61. However, when the internal pressure of the bag 1a increases, the pressure is applied in the thickness direction to all the sheets constituting the check valve 10 as shown by the arrow in FIG.
- the present invention is provided with the introduction recess 15 for smoothly moving the valve seat 61 by the fluid.
- the introduction recess 15 is partially provided in the fixed portion 14 and the breathable one-side base sheet 41 following the upstream thereof.
- the introduction recess 15 is formed by forming a fixing portion 14 with the first valve fixing seal 73 and the second valve fixing seal 74 and then pressing a pressing die (not shown) from the front side of the valve seat 61 toward the back side. It is formed by.
- the stamping die is preferably heated to partially melt the valve seat 61 and the breathable one-side base sheet 41. However, if the fixing die 14 is formed immediately after the fixing portion 14 is formed, the seat is recessed without heating.
- a sheet provided with irregularities in advance may be used, and the sheet can be appropriately formed.
- the fixing mold 14 is formed by the pressing mold after the fixing section 14 is formed. In the case where irregularities are formed on the melted seal, it can be formed most accurately and satisfactorily.
- the introduction recess 15 may be a non-directional one such as a dot shape or a planar shape, but it is preferable that the introduction concave portion 15 has a directivity.
- the direction is most preferably provided in the vertical direction so as to be along the flow direction rather than perpendicular to the flow direction of the fluid. In particular, it is desirable to provide an unevenness in the width direction of the valve seat 61, and it is preferable to provide it at a position including the upper end of the valve seat 61.
- valve seat 61 is a portion that serves as a weir for inflow from the inlet 11 to the valve flow path 13, and the introduction recess 15 is provided in the portion that serves as the weir, thereby realizing a smooth valve seat 61. Because. In this example, the lower end of the introduction recess 15 is stopped in the first valve fixing seal 73. The first valve fixing seal 73 and the second valve fixing seal 74 are separated from each other, and the introduction recess 15 is not formed in the second valve fixing seal 74.
- the introduction recess 15 may extend to the second valve fixing seal 74, and further the fixing in the valve seat 61. It can also extend to a portion downstream from the portion 14.
- the upper end of the introduction recess 15 may be provided in the breathable one side base sheet 41 further upstream than the fixed portion 14.
- the fluid can be more smoothly guided to the valve flow path 13.
- it may be provided only on the breathable one-side base sheet 41, but it is advantageous in that it is provided on the fixing portion 14 of the valve seat 61 as described above.
- Section a portion 11 of the breathable one-side base sheet 41
- section b upper part of the first valve fixing seal 73
- section c lower part of the first valve fixing seal 73
- section d second valve
- the introduction recess 15 in the illustrated embodiment is provided in the sections a to b.
- the introduction recess 15 is provided in the valve seat 61 and the breathable one-side base sheet 41, but the introduction recess 15 may be provided in the opposing air-tight one-side base sheet 21. In this case, you may provide only in the airtight other side base sheet 21, and may provide in both.
- the position to be provided may be the same position as the introduction recess 15 on the valve seat 61 and the breathable one side base sheet 41 side in the thickness direction of the seat, and may be provided at the position of each example shown in the above section.
- Three introduction recesses 15 are provided, but at least one introduction recess 15 may be provided, and the introduction recess 15 can be appropriately changed depending on the width of the valve flow path 13. Further, a flow path limiting seal (not shown) for joining the valve seat 61 and the breathable one side base sheet 41 to the hermetic other side base sheet 21 may be provided.
- the auxiliary recess 16 is provided in a portion including the upper end of the auxiliary sheet 51, and is provided from the lower part of the breathable one side base sheet 41 to the auxiliary sheet 51.
- the auxiliary recess 16 is provided to balance the introduction recess 15 and suppress the movement of the auxiliary sheet 51, and can be implemented without providing it.
- a method for manufacturing the check valve 10 will be described.
- a continuous sheet welding apparatus generally used for production of a check valve made of a sheet can be used.
- First, four rolls made of a web forming a sheet are prepared.
- the first web is for the sealing one-side foundation sheet 31
- the second web is for the inlet 11
- the third web is for the auxiliary seat 51 and the valve seat 61
- the fourth web is the sealing one-side foundation.
- the third web is formed by hollowing out with a slit that becomes a boundary between the auxiliary seat 51 and the valve seat 61. Further, slits are formed in the first web and the third web for adjusting the length with the inflow port 11.
- the first web fixing seal 73, the second valve fixing seal 74, the auxiliary fixing seal 75, and the second lower end seal 76 are formed on the first web, the second web, and the third web.
- An introduction recess 15 and an auxiliary recess 16 are formed in the first web, the second web, and the third web.
- a fourth web is supplied on the first web, the second web, and the third web, and the first side seal 81, the second side seal 82, the first upper end seal 71, the second upper end seal 72, and the first lower end seal are supplied. 77 is formed.
- the check valves 10 may be separated and shipped, but they may be rolled and shipped in a continuous state. And it supplies to the bag sheet 1b which manufactures the bag 1a, and the storage body fixing seal
- FIG. 2A another seal is formed on the side non-sealed portion 83. However, no seal is formed on the side non-sealed portion 83, and the seal between the bag sheet 1b is completely closed. It is also desirable to improve the performance.
- the check valve 10 is attached to the inside of the bag 1a, but can also be attached to the outside. In this case, the inlet 11 is attached in alignment with the opening 1c.
- the internal fluid is externally used as a storage bag for coffee beans and rice, a compression storage bag for various articles such as clothing and food, and a bag for extracting liquid such as seasoning liquid and oil. Used as a check valve to allow outflow and prevent backflow from outside to inside.
- the check valve 10 can also be used as a check valve that allows inflow from the outside to the inside and prevents backflow from the inside to the outside.
- the back surface of the check valve 10 is attached along the bag sheet 1b, and the bag 1a is opened to the opening 1c.
- the inlet 11 is aligned and attached.
- the front face of the check valve 10 is attached along the bag sheet 1b, and the opening 1c is attached to the outlet 12 in alignment.
- the bag 1a examples include a buffer body in which air is sealed, and a liquid injection sealed bag. In addition to bags, it can also be used for rigid containers such as synthetic resin plates.
- FIG. 4 is an example in which the auxiliary sheet 51 is not provided. In this example, the outer periphery of the second lower end seal 76 is directly sealed and attached to the bag sheet 1b.
- FIG. 5A is an example in which the auxiliary sheet 51 is not provided and the breathable one-side base sheet 41 is provided only at a location corresponding to the inflow port 11. Although illustration is omitted, it is also possible to provide the auxiliary sheet 51 by providing the breathable one-side base sheet 41 only at a portion corresponding to the inflow port 11.
- FIG. 5B is an example in which the auxiliary sheet 51 is not provided and the breathable one-side base sheet 41 is not provided. Although illustration is omitted, it is also possible to provide the auxiliary sheet 51 without providing the breathable one side base sheet 41.
- FIG. 6 is an example in which the auxiliary seat 51 is not provided and the second valve seat 62 is provided on the front side of the valve seat 61.
- the valve flow path 13 is between the valve seat 61 and the second valve seat 62.
- the second valve seat 62 may be provided with approximately the same shape and size as the hermetic other-side base sheet 21, but may have a different shape and size on condition that the valve function is achieved. What is necessary is just to seal the 2nd valve seat 62 to the inflow port 11 with the airtight other side base sheet
- the introduction recess 15 may be provided in the second valve seat 62.
- the check valve of the present invention may be formed by not only one valve flow path but also a plurality of partitioned valve flow paths.
- the check valves of the above-described embodiments are all used by sealing the entire periphery with the bag sheet 1b.
- the bag 1a is heat sealed or the like at the position of the fixing portion 14.
- the check valve 10 is sandwiched and fixed between the bag sheet 1b and the bag sheet 1b constituting the bag 1a.
- a bag fixing seal 91 is formed between the front side bag sheet 1b and the front side of the sealing other side base sheet 21, and the rear side bag sheet 1b and the sealing side one side.
- a bag fixing seal 91 is formed between the foundation sheet 31.
- An adhesive may be used for the bag fixing seal 91, or heat sealing may be used.
- a weld prevention portion 92 such as heat-resistant ink is formed on the airtight other side base sheet 21 in advance.
- This welding prevention part 92 can also be formed in the valve seat 61 side, and may be formed in both.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Check Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
Description
図1に示すように、この実施の形態に係る逆止弁10は、収納体である袋1aに取り付けられている。
次に、これらのシートの位置関係と接着状態を説明する。
第1ウェブと第2ウェブと第3ウェブとに、第1弁固定シール73、第2弁固定シール74、補助固定シール75、第2下端シール76の各シールを形成する。
第1ウェブと第2ウェブと第3ウェブとに、導入凹部15、補助凹部16を形成する。
図1の例では、逆止弁10は袋1aの内部に取り付けたが、外部に取り付けることもできる。この場合、流入口11を開口1cに位置合わせして取り付ける。
次に、他の実施の形態について簡単に説明するが、説明を行なわない詳細については、上記の説明を適用するものとする。
まず図4の例は、補助シート51を設けない例である。この例では、第2下端シール76の外周が袋シート1bに直接シールされて取り付けられる。
本願発明の逆止弁は、1個の弁流路のみならず、区画された複数の弁流路を形成したものであってもよい。
1b 袋シート
1c 開口
10 逆止弁
11 流入口
12 流出口
13 弁流路
14 固定部
15 導入凹部
16 補助凹部
21 密閉性他方側基礎シート
31 密閉性一方側礎シート
41 通気性一方側基礎シート
51 補助シート
61 弁シート
62 第2弁シート
Claims (5)
- 複数枚のシートが重ねられて構成され、上記シート間に流体の通過する空間である弁流路が形成され、この弁流路が開放及び閉鎖されることにより、流入口から流出口への正方向の流体の通過を許容し、流出口から流入口への逆方向の流体を遮断するものであり、
一方側基礎シートと他方側基礎シートとの複数枚の基礎シートと、複数枚の基礎シートの間に挟まれて配置された少なくとも1枚の弁シートとを備え、
上記弁シートは、少なくとも上記一方側基礎シートに対して接着された固定部を備え、
上記固定部の接着は、上記弁流路を横切ってなされたものであり、
上記弁シートは、上記固定部より下流側の部分が上記一方側基礎シートから離反可能とされており、
上記弁シートと、上記弁シートに重ねられて配置された他方側弁シートまたは他の弁シートとの間が上記弁流路とされた逆止弁において、
上記弁流路を構成する上記弁シートに重ねられて配置された他方側弁シートまたは他の弁シートと、上記弁シートとの少なくとも何れか一方に、その厚み方向に凹んだ流体導入凹部が形成され、
上記流体導入凹部は、流路の上下方向において、上記弁シートの上記固定部又は上記固定部よりも上流側位置に設けられたことを特徴とする逆止弁。 - 上記流入口は上記逆止弁の正面又は背面に位置しており、
上記流出口は上記流入口とは反対の背面又は正面に位置しており、
上記逆止弁の正面又は背面が収納体の表面又は内面に沿わされ、
上記逆止弁の全周が収納体固定シールで上記収納体に接着され、
上記流入口から上記弁流路を経て上記流出口までが、上記収納体固定シールにて囲まれた領域内に位置していることを特徴とする請求項1記載の逆止弁。 - 上記一方側基礎シートの一部は、上記正方向の気流が表裏方向に通過する通気性を備えた流体通過部とされており、
上記流体通過部は、正方向の気流が逆止弁内に流入する流入口であり、
上記流体通過部は、上記一方側基礎シートのうち、上記固定部よりも上流側に配置されたものであり、
上記流体導入凹部は、上記流体通過部から上記固定部にかけて形成されたことを特徴とする請求項1記載の逆止弁。 - 上記固定部は、第1弁固定シールと、その下流側に形成された第2弁固定シールとを備え、上記流体導入凹部は、上記第2弁固定シールには形成されず、上記第1弁固定シールを含む位置に設けられたことを特徴とする請求項1記載の逆止弁。
- 請求項1~4の何れかに記載の逆止弁が取り付けられた収納体であり、
この収納体が、柔軟な樹脂製の袋シートを備え、
上記逆止弁の全周囲が上記袋シートの内側又は外側に接着されたことを特徴とする収納体。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/143,231 US8622089B2 (en) | 2010-12-29 | 2010-12-29 | Check valve and storage body equipped therewith |
PCT/JP2010/073830 WO2012090337A1 (ja) | 2010-12-29 | 2010-12-29 | 逆止弁及びこれを備えた収納体 |
JP2011511922A JP4761408B1 (ja) | 2010-12-29 | 2010-12-29 | 逆止弁及びこれを備えた収納体 |
KR20137020069A KR20130123422A (ko) | 2010-12-29 | 2010-12-29 | 역지 밸브 및 이것을 구비한 수납체 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/073830 WO2012090337A1 (ja) | 2010-12-29 | 2010-12-29 | 逆止弁及びこれを備えた収納体 |
Publications (1)
Publication Number | Publication Date |
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WO2012090337A1 true WO2012090337A1 (ja) | 2012-07-05 |
Family
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/073830 WO2012090337A1 (ja) | 2010-12-29 | 2010-12-29 | 逆止弁及びこれを備えた収納体 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8622089B2 (ja) |
JP (1) | JP4761408B1 (ja) |
KR (1) | KR20130123422A (ja) |
WO (1) | WO2012090337A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014028633A (ja) * | 2012-07-31 | 2014-02-13 | Mk Techno Co Ltd | 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 |
WO2019229928A1 (ja) * | 2018-05-31 | 2019-12-05 | 有限会社田中テクニカル | 逆止弁及び逆止弁付パッケージ |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6407676B2 (ja) * | 2014-11-21 | 2018-10-17 | 有限会社田中テクニカル | 袋体の逆止弁構造及びその製造方法 |
JP6083839B1 (ja) * | 2016-05-19 | 2017-02-22 | 有限会社田中テクニカル | 逆止弁を備えた袋体の製造システム |
GB201609168D0 (en) | 2016-05-25 | 2016-07-06 | 3M Innovative Properties Co | Exhaust valve shroud for a personal protection respiratory device |
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JPS51148316U (ja) * | 1975-05-22 | 1976-11-27 | ||
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JPH0312968B2 (ja) * | 1986-10-24 | 1991-02-21 | Fuji Daisu Kk | |
JP4436925B1 (ja) * | 2009-10-30 | 2010-03-24 | 株式会社アシスト | 逆止弁及び密封袋、及び逆止弁と密封袋の製造方法 |
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JPS51148316A (en) * | 1975-06-16 | 1976-12-20 | Hitachi Ltd | Ringing trunk |
US4134535A (en) * | 1976-06-04 | 1979-01-16 | Hag Aktiengesellschaft | Pressure relief valve for packing containers |
JPH088996Y2 (ja) * | 1991-11-01 | 1996-03-13 | 株式会社柏原製袋 | 食料品用包装袋 |
JP3003479U (ja) | 1994-04-25 | 1994-10-18 | 化研工業株式会社 | 被服、その他の可圧縮物の圧縮密封袋 |
JP2691881B2 (ja) | 1995-05-31 | 1997-12-17 | 株式会社サンエー化研 | 濾過面を有する逆止弁付き包装袋とその製造装置 |
JP3012968B2 (ja) | 1995-10-20 | 2000-02-28 | 株式会社サンエー化研 | 包装袋用逆止弁 |
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2010
- 2010-12-29 US US13/143,231 patent/US8622089B2/en not_active Expired - Fee Related
- 2010-12-29 JP JP2011511922A patent/JP4761408B1/ja active Active
- 2010-12-29 KR KR20137020069A patent/KR20130123422A/ko not_active Application Discontinuation
- 2010-12-29 WO PCT/JP2010/073830 patent/WO2012090337A1/ja active Application Filing
Patent Citations (4)
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JPS51148316U (ja) * | 1975-05-22 | 1976-11-27 | ||
JPH0312968B2 (ja) * | 1986-10-24 | 1991-02-21 | Fuji Daisu Kk | |
JPH033479U (ja) * | 1989-06-02 | 1991-01-14 | ||
JP4436925B1 (ja) * | 2009-10-30 | 2010-03-24 | 株式会社アシスト | 逆止弁及び密封袋、及び逆止弁と密封袋の製造方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2014028633A (ja) * | 2012-07-31 | 2014-02-13 | Mk Techno Co Ltd | 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 |
WO2019229928A1 (ja) * | 2018-05-31 | 2019-12-05 | 有限会社田中テクニカル | 逆止弁及び逆止弁付パッケージ |
JPWO2019229928A1 (ja) * | 2018-05-31 | 2021-07-29 | 有限会社田中テクニカル | 逆止弁及び逆止弁付パッケージ |
Also Published As
Publication number | Publication date |
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KR20130123422A (ko) | 2013-11-12 |
JPWO2012090337A1 (ja) | 2014-06-05 |
JP4761408B1 (ja) | 2011-08-31 |
US20120170875A1 (en) | 2012-07-05 |
US8622089B2 (en) | 2014-01-07 |
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