JP6632898B2 - Discharge container - Google Patents

Description

  The present invention provides a container body comprising a double container that accommodates contents and has an outside air introduction hole at the mouth, a discharge cap having a discharge port and an intake hole for the contents, and from the outside air introduction hole to the intake hole. With regard to the discharge container having a check valve for outside air and allowing the flow of air from the intake hole to the outside air introduction hole while preventing the outflow of air, in particular, the range of molding conditions of the check valve for outside air can be expanded, The present invention relates to a discharge container capable of improving tolerance to deformation occurring after molding of a check valve for outside air.

  Conventionally, as described in Patent Document 1, for example, a container main body composed of a double container accommodating contents and having an outside air introduction hole (through opening) in a mouth portion, and an outflow hole (pouring out) of contents. An outlet), a discharge cap having a discharge port for the contents and an intake hole (outside air introduction hole), and a flow path that is mounted between the inner plug and the discharge cap and reaches the discharge port from the outlet hole. A cylindrical partition wall that forms a partition, a check valve that opens and closes a flow path that reaches from the outlet port to the discharge port, and an outside air check valve that is integrally formed on the outer peripheral surface of the partition wall, Is known.

  In the discharge container having such a configuration, after the body of the container body is pressed (squeezed) to discharge the contents, when the body portion is released, the check valve is closed and the discharge port connects the container body to the container body. The check valve for the outside air is opened and the outside air is inserted between the outer layer body and the inner layer body through the outside air introduction hole provided at the mouth of the discharge cap. The outer layer body can be restored to the original shape while the inner layer body is deformed by reducing the volume. Therefore, the contents are discharged without being replaced with the outside air, whereby the contents remaining inside the container main body are hardly contacted with the air, so that the deterioration and the deterioration thereof can be suppressed.

JP 2015-227175 A

  In the above-described discharge container, the check valve for outside air provided integrally with the partition wall is formed of a soft material and thin in order to easily operate by the pressure of air after discharging the contents. For this reason, the range of molding conditions for the outside air check valve is extremely narrow, and plastic deformation is likely to occur during handling from molding to assembly of the outside air check valve. Further, when the contents are filled at a high temperature in the contents filling step, plastic deformation is more likely to occur due to the influence of the temperature.

  If the outer peripheral edge of the check valve for outside air hangs down due to such deformation and the original valve function is impaired, the outflow of air cannot be prevented even if the body is pressed during use, and Part of the pressing force does not become a force for crushing the inner layer body, but causes a discharge failure of the contents.

  In addition, when the interference of the valve (a dimensional difference for pressing the outer peripheral portion of the valve upward) is set so as to maintain the valve function even if such deformation occurs, the discharge of the contents is performed. When the outer layer body is later restored, the resistance of the air passing through the outside air check valve increases, so that the restoration of the outer layer body is delayed or the sound of passing air is generated.

  The present invention has been developed in order to solve such a problem, and the range of molding conditions for the outside air check valve can be widened, and the tolerance for deformation occurring after molding the outside air check valve can be improved. An object is to provide a discharge container.

  The discharge container according to the present invention includes a container body having a cylindrical mouth and a body connected to the mouth, and an outflow hole for contents. And a discharge cap connected to the outlet, provided on the top wall portion, and a discharge cap attached to the opening to cover the inside plug, and between the inside plug and the top wall portion of the discharge cap. A cylindrical partition wall that defines a flow path that reaches the discharge port from the outflow hole, and a check valve that opens and closes a flow path that reaches the discharge port from the outflow hole, The container body has a volume-reducible inner layer body for containing the contents, and air between the inner layer body through an outside air introduction hole provided in a portion corresponding to the mouth while accommodating the inner layer body inside. And an outer layer body for introducing the outside air, wherein the outside air introduction hole is provided in a top wall portion of the discharge cap. An outside air check valve that can communicate with the outside of the discharge cap through the intake hole provided, and that is formed integrally with the outer peripheral surface of the partition wall, has a flange shape and can move its outer peripheral edge up and down by elastic deformation. The outer peripheral edge portion of the check valve for outside air is seated on the top wall portion of the discharge cap in a steady state before being elastically deformed by air pressure, so that the outside air check hole extends from the outside air introduction hole to the suction hole. Is disposed between an upper end position for preventing the outflow of air and a lower end position for preventing downward movement by contacting a valve receiving portion provided on the inner plug.

  Further, in the discharge container of the present invention, an outer peripheral edge of the check valve for outside air is disposed at the lower end position in the steady state, and the valve receiving portion is a check valve for outside air having a flange shape. And at least one of the annular surface and the outer peripheral edge of the outside air check valve is provided when the outer peripheral edge of the outside air check valve is at the lower end position. It is preferable to provide at least one concave portion or convex portion that forms a gap for communicating the outside air introduction hole and the intake hole between the annular surface and the outer peripheral edge of the outside air check valve.

  According to the present invention, in the steady state before the outer peripheral edge of the check valve for outside air is elastically deformed by air pressure, the upper end position where the outflow of air is prevented by sitting on the top wall of the discharge cap, and Since it is located between the lower end position where it is prevented from moving downward by contacting the valve receiving portion provided on the stopper, the movable range of the check valve for outside air is set between the top wall portion of the discharge cap and the middle position. It can be limited to a narrow range between the stopper and the valve receiver. For this reason, according to the present invention, even if there is some molding failure or deformation in the outside air check valve, the outside air check valve is pressed by the pressure of the air from the outside air introduction hole toward the intake hole when the body is pressed. The outer peripheral edge of the stop valve is seated on the top wall of the discharge cap to prevent outflow of air, thereby enabling good discharge of the contents.

  Therefore, according to the present invention, it is possible to provide a discharge container in which the range of molding conditions for the outside air check valve can be widened and the tolerance for deformation occurring after molding the outside air check valve can be improved.

FIG. 3 is a cross-sectional view of a main part of the discharge container according to the embodiment of the present invention, as viewed from a side. It is the elements on larger scale of FIG. It is sectional drawing which shows the state at the time of discharge of the content about the discharge container of FIG. It is sectional drawing in side view which shows the modification of the discharge container of FIG. It is sectional drawing in side view which shows the other modification of the discharge container of FIG. It is sectional drawing in side view which shows the further another modification of the discharge container of FIG. It is sectional drawing in side view which shows the further another modification of the discharge container of FIG. It is sectional drawing in the side view of the principal part of the discharge container which is another embodiment of this invention.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. In this specification, “upper” is the side where the discharge cap is located with respect to the container body when the discharge container is placed on a horizontal plane, and “down” is the opposite side.

  As shown in FIG. 1, a discharge container 1 according to one embodiment of the present invention includes a container body 10, a discharge cap 20, an inner plug 30, a partition wall 40, a check valve 50, and a check valve 60 for outside air. ing. The discharge container 1 can store various contents, but is particularly suitable for use for storing contents having a relatively high viscosity such as, for example, a kneaded material.

  Although not shown in detail, the container body 10 has a bottle shape having a mouth portion 11 and a body portion 12.

  The mouth 11 is formed in a cylindrical shape, and an external thread 11 a for mounting the discharge cap 20 is integrally provided on the outer peripheral surface thereof. In addition, a cylindrical sealing step 11b having a larger diameter than the mouth 11 is integrally provided at a root side portion of the mouth 11.

  The body 12 is continuous with the lower end of the mouth 11 via a sealing step 11b, and the inside thereof is a storage chamber 12a for contents.

  In the present embodiment, the container main body 10 is configured as a double container (also referred to as a delamination container or a laminate peeling container) including an outer layer body 13 and an inner layer body 14 housed inside the outer layer body 13.

  The inner layer body 14 is formed, for example, of a synthetic resin material into a thin-walled bag capable of volume reduction and deformation, and is arranged on the inner surface of the outer layer body 13 in a releasable manner. The inner layer body 14 wraps around the opening end of the mouth portion 11 of the container body 10 and is open at the opening end, and the inside thereof is the above-described accommodation chamber 12a.

  The outer layer body 13 is formed of, for example, a synthetic resin material in a bottle shape having a predetermined rigidity, and forms an outer shell of the container body 10. The portion of the outer layer body 13 corresponding to the body 12 can be pressed (squeezed) and has a resilience to the original shape. In a portion corresponding to the opening 11 of the outer layer body 13, an outside air introduction hole 15 penetrating through the outer layer body 13 in the radial direction and communicating between the inner layer body 14 and the outer layer body 13 is provided. In the case shown in the figure, a portion corresponding to the mouth 11 of the outer layer body 13 is provided with two outside air introduction holes 15 in an opposed arrangement with the axis thereof interposed therebetween, but at least one outside air introduction hole 15 is provided. It should just be.

  The container body 10 extends between the outer layer body 13 and the inner layer body 14 in the vertical direction from the mouth 11 toward the bottom of the body 12 so that the inner layer body 14 is partially May be provided with a plurality of adhesive layers (not shown) that adhere to the substrate. In this case, it is preferable that a plurality of outside air introduction holes 15 communicating between the inner layer body 14 and the outer layer body 13 be provided in a portion corresponding to the opening 11 of the outer layer body 13 at a portion between the respective adhesive layers. Further, the container body 10 may have a configuration in which, for example, a barrier layer having a barrier property against oxygen or water vapor is laminated, or a configuration in which the barrier property is enhanced by various coatings.

  The discharge cap 20 is attached to the mouth 11 of the container body 10. The discharge cap 20 is formed of a synthetic resin material into a topped cylindrical shape having a top wall portion 21 covering the opening of the mouth portion 11 and a cylindrical tubular wall portion 22 covering the outer periphery of the mouth portion 11. A female screw 22 a is provided on the inner peripheral surface of the cylindrical wall portion 22, and the female screw 22 a is screw-coupled to a male screw 11 a provided on the outer peripheral surface of the mouth portion 11. It is designed to be mounted on the unit 11.

  A discharge cylinder 21a projecting upward from the top wall 21 is provided integrally with the top wall 21. The discharge cylinder 21a is disposed off the axis of the substantially circular top wall portion 21, and the inside thereof is a discharge port 23 for contents.

  The inner plug 30 is mounted inside the discharge cap 20 and at the open end of the mouth 11, and covers the opening of the mouth 11. The inner plug 30 is made of a synthetic resin, and includes a main body wall 31 disposed inside the discharge cap 20 at an axial distance from the top wall 21 and an outer peripheral edge of the main body wall 31. And a support cylinder 32 extending toward the top wall 21. The support cylinder portion 32 has an upper end abutting on the lower surface of the top wall portion 21 and is fitted on the inner surface of the cylinder wall portion 22 at the outer peripheral portion, whereby the inner plug 30 is fixed and held inside the discharge cap 20. . An annular seal tube 33 is integrally provided on the lower surface of the main body wall portion 31, and when the seal tube 33 is fitted on the inner peripheral surface of the mouth portion 11, the inner plug 30 is closed at the mouth portion of the main body wall portion 31. It is attached to the opening end of the opening 11 and covers the opening of the opening 11. The inner plug 30 is covered by the discharge cap 20.

  At the center of the main body wall 31 of the inner plug 30, an outflow hole 31a for the content is provided so as to be offset from the axis of the main body wall 31. The outflow hole 31 a penetrates the main body wall 31 of the inner plug 30 from the front to the back, and can be connected to the discharge port 23 provided in the top wall 21 of the discharge cap 20. The contents stored in the storage chamber 12a can flow out toward the discharge port 23 through the outflow holes 31a.

  A cylindrical wall 34 is provided at the center of the main body wall 31 of the inner plug 30 adjacent to the outflow hole 31a. The cylindrical wall 34 defines an opening penetrating the main body wall 31 of the inner plug 30 from the front to the back by an inner peripheral surface thereof, and extends toward the accommodation room 12a. The cylindrical wall 34 is provided with a reduced diameter portion 34a that narrows the inner diameter as it goes downward. A moving valve 35 that is movable along the inner peripheral surface of the cylindrical wall 34 is provided in the cylindrical wall 34. When the discharge container 1 is set in the upright posture as shown in FIG. 1, the moving valve 35 is seated on the reduced diameter portion 34a to close the accommodation chamber 12a. On the upper surface of the main body wall portion 31 of the inner plug 30, an annular groove 31 b surrounding the outflow hole 31 a and the cylindrical wall 34 is provided on the radially inner side of the support cylindrical portion 32.

  A partition wall 40 is mounted between the top wall 21 of the discharge cap 20 and the main body wall 31 of the inner plug 30. The partition wall 40 is formed in a cylindrical shape from, for example, low-density polyethylene (soft polyethylene). One end of the partition wall 40 is fitted into an annular groove 21 b provided on the lower surface of the top wall portion 21, and the other end is a plug 30. And is fixedly held between the top wall 21 and the main body wall 31 by fitting into an annular groove 31b provided on the upper surface of the main body wall 31. In the space between the top wall 21 of the discharge cap 20 and the main body wall 31 of the inner plug 30, the partition wall 40 is provided on the top wall 21 from the outflow hole 31 a provided in the main body wall 31. A flow path (the inner part of the partition wall 40) 41 reaching the discharge port 23 is formed in a partitioned manner.

  The check valve 50 is provided between the top wall 21 of the discharge cap 20 and the main body wall 31 of the inner plug 30 in a position radially inside the partition wall 40, that is, inside the flow path 41. In the illustrated case, the check valve 50 is formed integrally with the partition wall 40 using the same material as the partition wall 40. The check valve 50 has a valve body 50 a formed in a circular plate shape capable of opening and closing an outflow hole 31 a provided in the body wall portion 31 of the inner plug 30 and most of the opening of the cylindrical wall 34, There are provided three elastic arms 50b for integrally connecting the valve body 50a to the inner peripheral surface of the partition wall 40. In this embodiment, the check valve 50 has a so-called three-point valve configuration in which the valve body 50a is supported by three elastic arms 50b, but a so-called one-point valve in which the valve body 50a is supported by one hinge. Other conventional non-return valves, such as valves, can be used.

  Between the discharge cap 20 and the mouth 11, a vent 36 provided in the inner plug 30 and an intake hole 24 provided in the top wall 21 communicate with the outside air introduction hole 15 provided in the mouth 11. An air flow path R that can communicate with the outside of the discharge cap 20 through is formed. Note that the lower end of the cylindrical wall portion 22 of the discharge cap 20 is in airtight contact with the sealing step portion 11b over the entire circumference to seal the air flow path R. Further, a slit extending in the vertical direction is formed in the male screw 11a, and in the portion where the male screw 11a and the female screw 22a are provided, the slit forms a part of the air flow path R. The air may flow along the male screw 11a and the female screw 22a without providing a slit in the male screw 11a.

  As shown in FIG. 2, on the outer peripheral surface of the partition wall 40, an outside air check valve 60 having a thin circular flange shape is integrally provided with the same material as the partition wall 40. The outside air check valve 60 is configured to be able to move up and down its outer peripheral edge 61 by elastic deformation. In the present embodiment, the outer peripheral edge portion 61 of the outside air check valve 60 is moved downward by abutting on the valve receiving portion 37 provided on the inner plug 30 in a steady state before being elastically deformed by air pressure. It is located at the lower end position where it is blocked (see the solid line in FIG. 2).

  When the pressure between the outer layer body 13 and the inner layer body 14 increases due to the pressing of the body part 12, the outer peripheral edge part 61 of the outside air check valve 60 separates from the valve receiving part 37 and moves to the top wall part 21. The seat is moved to an upper end position (see a two-dot chain line in FIG. 2) that prevents air from flowing out of the outside air introduction hole 15 to the intake hole 24 through the air flow path R. The outer peripheral edge 61 of the check valve for outside air 60 does not necessarily need to be arranged at the lower end position in a steady state, but may be arranged between the upper end position and the lower end position in a steady state.

  In the present embodiment, the valve receiving portion 37 is formed by the upper surface of an annular step portion provided on the inner peripheral surface of the support tubular portion 32. As described above, the valve receiving portion 37 is formed of an annular surface provided coaxially with the outside air check valve 60 having a flange shape. Further, the valve receiving portion 37 is provided with a gap for communicating the outside air introduction hole 15 and the suction hole 24 when the outer peripheral edge 61 of the outside air check valve 60 is at the lower end position. At least one convex portion (a rib in this example) 37 a formed between the outer peripheral portion 61 and the outer peripheral edge portion 61 of the optical disc 60 is provided. Instead of the at least one convex portion 37a, the valve receiving portion 37 has a gap for communicating the outside air introduction hole 15 and the suction hole 24 when the outer peripheral edge 61 of the outside air check valve 60 is at the lower end position. May be provided between the annular surface and the outer peripheral edge 61 of the outside air check valve 60. Alternatively, instead of the valve receiving portion 37, at least one convex portion (a rib in this example) 37a or a concave portion may be provided on the outer peripheral edge portion 61 of the check valve for outside air 60.

  As shown in FIG. 1, the discharge cap 20 may have a configuration including a lid 70. In the illustrated case, the lid 70, which is also called an overcap, is formed in a topped cylindrical shape having substantially the same diameter as the discharge cap 20, and is rotatably connected to the top wall 21 of the discharge cap 20 by a hinge 71. The discharge cylinder 21a can be covered together with the top wall 21. A cylindrical sealing wall 72 is integrally provided on the inner surface of the lid 70. When the lid 70 is closed, the sealing wall 72 fits inside the discharge cylinder 21 a to close the discharge port 23. Has become. On the side of the lid 70 facing the hinge 71, a knob 73 serving as a finger when opening the lid 70 is provided.

  The lid 70 is not limited to the configuration integrally connected to the discharge cap 20 by the hinge 71, but may be formed separately from the discharge cap 20 and attached to the discharge cap 20 by screwing or undercut. .

  In the discharge container 1 having such a configuration, the body 12 is squeezed while the container body 10 is tilted so that the discharge cylinder 21a faces downward with the lid 70 opened, so that the non-return as shown in FIG. By opening the valve 50, the contents inside the storage chamber 12a can flow out from the outflow hole 31a toward the discharge port 23, and can be discharged from the discharge port 23 to the outside. At this time, since the intake hole 24 is closed by the outside air check valve 60 moved to the upper end position, air existing between the outer layer body 13 and the inner layer body 14 does not leak to the outside. By squeezing the body part 13 of the thirteen, the inner layer body 14 can be pressed to push the contents toward the outflow hole 31a. In this state, the moving valve 35 in the cylindrical wall 34 is moving toward the discharge port 23 due to its own weight or the content liquid flowing from the opening on the lower side of the cylindrical wall 34.

  On the other hand, when the squeeze of the body 12 is released after the discharge of the contents, the outflow hole 31a is closed by the check valve 50 as shown in FIG. Due to the negative pressure generated, the outside air check valve 60 moves toward the lower end position (see the solid line in FIG. 1), and the inner layer body 14 and the outer layer body 13 from the intake hole 24 through the air flow path R and the outside air introduction hole 15. Between the outside air is introduced. Thereby, the outer layer body 13 is restored to the original shape while the inner layer body 14 is reduced in volume and the outside air is suppressed from being introduced into the inner layer body 14, that is, the accommodation chamber 12 a, and the outer layer body 13 is stored in the container body 10. It is possible to reduce the contact of the contents to be made with the air, thereby suppressing the deterioration and deterioration of the contents.

  Further, at this time, when the outflow hole 31a is closed by the check valve 50, the moving valve 35 moves the discharge container 1 to the original upright posture although the contents remain in the discharge tube 21a. When returning, it moves downward due to its own weight or a decrease in pressure in the storage chamber 12a. As a result, a space corresponding to the movement of the moving valve 35 is formed above the cylindrical wall 34, so that the contents corresponding to this space can be pulled back from the discharge cylinder 21a (sack). Back function), dripping can be effectively prevented. Since the moving valve 35 that has moved downward is seated on the reduced diameter portion 34a of the cylindrical wall 34, the inside of the accommodation chamber 12a can be kept closed.

  Here, in the discharge container 1 of the present invention, the outside air check valve 60 forming a flange shape is integrally provided on the outer peripheral surface of the partition wall 40, and the outer peripheral edge 61 of the outside air check valve 60 is fixed in a steady state. The upper end position where air is prevented from flowing out of the outside air introduction hole 15 to the intake hole 24 by sitting on the top wall portion 21 of the discharge cap 20 and the downward movement is prevented by contacting the valve receiving portion 37. Since it is configured to be located between the lower end position, the movable range of the outer peripheral edge portion 61 of the check valve for outside air 60 is set between the top wall portion 21 of the discharge cap 20 and the valve receiving portion 37 of the inner plug 30. Can be limited to a narrow range.

  For this reason, in the discharge container 1 of the present invention, even when the outside air check valve 60 has some molding failure or deformation, the air flowing from the outside air introduction hole 15 to the air intake hole 24 when the body 12 is pressed. The outer peripheral edge 61 of the outside air check valve 60 is seated on the top wall 21 of the discharge cap 20 by the pressure described above to prevent the outflow of air, thereby enabling good discharge of the contents. In particular, even when the discharge container 1 of the present invention is used for accommodating relatively high-viscosity contents such as, for example, kneaded ones, regardless of the occurrence of molding failure or deformation of the check valve for outside air 60, Smooth ejection of the contents can be realized.

  Further, in the discharge container 1 of the present invention, the outer peripheral edge portion 61 of the check valve for outside air 60 is disposed at the lower end position in a normal state, and the valve receiving portion 37 is coaxial with the check valve for outside air 60 having a flange shape. When the outer peripheral edge 61 of the outside air check valve 60 is at the lower end position on at least one of the annular surface and the outer peripheral edge 61 of the outside air check valve 60. At least one concave or convex portion 37a is formed between the annular surface and the outer peripheral portion 61 of the check valve 60 for outside air. I have.

  For this reason, in the discharge container 1 of the present invention, the position of the outer peripheral edge portion 61 of the check valve for outside air 60 can be stabilized in the steady state, and the outside air can be introduced by the gap formed by the concave portion or the convex portion 37a. The hole 15 communicates with the outside world, so that the air in the space between the inner layer body 14 and the outer layer body 13 can be reliably released to the outside world. Therefore, even when the internal pressure of the space between the inner layer body 14 and the outer layer body 13 increases due to a temperature change or the like in a steady state, the air can escape to the outside world, so that when the lid 70 is opened, the discharge port 23 is opened. It is possible to prevent the ejection of contents from occurring.

  In the embodiment described above, the outside air check valve 60 having a thin circular flange shape has an arch shape in which a cross-sectional shape in a cross section passing through the axis of the outside air check valve 60 is curved upward. However, for example, it may be a straight shape as shown by reference numeral 60A in FIG. 4, a wavy shape based on the straight shape as shown by reference numeral 60B in FIG. 5, or a reference numeral 60C in FIG. 7 and a wavy line shape based on the downwardly curved arch shape indicated by reference numeral 60D in FIG.

  Further, in the above-described embodiment, the outer peripheral edge portion 61 of the check valve for outside air 60 is arranged at the lower end position in a steady state. However, as shown in FIG. It may be. FIG. 8 is a side sectional view of a main part of a discharge container 101 according to another embodiment of the present invention. In FIG. 8, members corresponding to the above-described members are denoted by the same reference numerals.

  In the present embodiment, the check valve for outside air 160 has an arch shape in which the cross-sectional shape in a cross section passing through the axis of the check valve for outside air 160 is curved downward, and is arranged at the upper end position in a steady state. It is configured. Further, the valve receiving portion 137 is constituted by an annular surface provided coaxially with the outside air check valve 160 having a flange shape, and when the outside air check valve 160 is at the lower end position on the annular surface. Is provided with at least one recess 137a that forms a gap through which air passes from the intake hole 24 to the outside air introduction hole 15.

  In the present embodiment, the cylindrical wall 34 and the moving valve 35 are not provided in the main body wall 31 of the inner plug 30, and the outflow hole 31 a ′ expands concentrically with the main body wall 31 instead. It is provided. The check valve 50 'is a one-point valve. The seal wall 72 'of the lid 70 fits outside the discharge cylinder 21a' to close the discharge port 23 '.

  According to the present embodiment, the check valve for outside air 160 is arranged at the upper end position in a normal state, so that when the body 12 is pressed, the pressing force can be used as a force for immediately pushing out the contents. Therefore, according to the present embodiment, smooth discharge of contents can be realized even when contents having particularly high viscosity are accommodated.

  The present invention is not limited to the above embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the container body 10 is a laminated peeling container in which the inner layer body 14 is laminated on the inner surface of the outer layer body 13 so as to be peelable. However, the present invention is not limited thereto. It is good also as a built-in type double container built in the inside of 13.

  Further, in the above-described embodiment, the discharge cap 20 has the top wall 21 and the cylindrical wall 22 formed integrally, and the inner plug 30 is formed separately from the discharge cap 20. However, the present invention is not limited to this, and it is assumed that the discharge cap 20 is formed by combining a top wall portion 21 and a cylindrical wall portion 22 formed separately from each other, and the inner plug 30 is connected to the cylindrical wall portion 22 of the discharge cap 20. It may be formed integrally.

DESCRIPTION OF SYMBOLS 1 Discharge container 10 Container main body 11 Mouth part 11a Male screw 11b Sealing step part 12 Body part 12a Storage chamber 13 Outer layer body 14 Inner layer body 15 External air introduction hole 20 Discharge cap 21 Top wall part 21a, 21a 'Discharge cylinder 21b Annular groove 22 cylinder Wall portion 22a Female screw 23, 23 'Discharge port 24 Intake hole 30 Inner plug 31 Main body wall portion 31a, 31a' Outflow hole 31b Annular groove 32, 32 'Support cylinder portion 33 Seal cylinder 34 Cylindrical wall 34a Reduced diameter portion 35 Moving valve 36 vent hole 37 valve receiving part 37a convex part 40 partition wall 41 flow path 50, 50 'check valve 50a valve body 50b elastic arm 60, 60A, 60B, 60C, 60D check valve for outside air 61 check valve for outside air Outer peripheral edge 70 Lid 71 Hinge 72, 72 'Seal wall 73 Knob 101 Discharge container 137 Valve receiver 137a Recess 160 Non-return valve for outside air Air flow path

Claims (2)

A container body having a cylindrical mouth and a body connected to the mouth,
An inner plug provided with an outflow hole for the contents, which is attached to the opening end of the mouth to cover the opening of the mouth,
A discharge cap connected to the outlet hole is provided on the top wall portion, and a discharge cap attached to the mouth portion and covering the inner plug,
A cylindrical partition wall that is mounted between the inner plug and the top wall portion of the discharge cap and that forms a flow path that reaches the discharge port from the outflow hole;
A check valve that opens and closes a flow path from the outflow hole to the discharge port,
The container body has a volume-reducible deformable inner layer body for storing the contents, and the inner layer body is housed inside and between the inner layer body and an outside air introduction hole provided in a portion corresponding to the mouth. A double container comprising an outer layer body for introducing air,
The outside air introduction hole is capable of communicating with the outside of the discharge cap through an intake hole provided in a top wall portion of the discharge cap,
On the outer peripheral surface of the partition wall, an outside air check valve that forms a flange and that can move its outer peripheral edge up and down by elastic deformation is integrally provided,
The outer peripheral edge of the check valve for outside air prevents the outflow of air from the outside air introduction hole to the intake hole by being seated on the top wall of the discharge cap in a steady state before being elastically deformed by air pressure. A discharge container disposed between an upper end position of the inner container and a lower end position where the lower end position is prevented by contacting a valve receiver provided on the inner plug. The outer peripheral edge of the outside air check valve is disposed at the lower end position in the steady state,
The valve receiving portion is an annular surface provided coaxially with the outside air check valve having a flange shape,
At least one of the annular surface and the outer peripheral portion of the outside air check valve communicates the outside air introduction hole and the intake hole when the outer peripheral portion of the outside air check valve is at the lower end position. The discharge container according to claim 1, further comprising at least one concave portion or convex portion that forms a gap to be formed between the annular surface and an outer peripheral edge of the outside air check valve.

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