JP2018034863A - Discharge container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge container capable of reducing the amount of content which remains without being discharged due to intrusion of the outside air into a storage part of a container body.SOLUTION: A discharge container 1 includes: a container body 3 having a cylindrical mouth part 2; and a pump device 4 mounted on the mouth part 2. The container body 3 includes a storage part 5 connected to the mouth part 2, for accommodating content and performing volume-reducing deformation according to the discharge of the content by the pump device 4. On an inner peripheral surface of the mouth part 2, an annular protrusion 6 is provided which protrudes radially inside and which can stick to the pump device 4 across the whole periphery.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a discharge container.

  2. Description of the Related Art Conventionally, a container body having a cylindrical mouth portion and a pump device attached to the mouth portion are provided, and the container body is subjected to volumetric deformation (the volume is reduced as the contents are discharged by the pump device). There is known a discharge container provided with an accommodating portion that is deformed to the above. For example, in the discharge container described in Patent Literature 1, the packing seal provided on the lower surface of the flange portion of the pump device is inserted into the mouth portion by inserting the pump device into the mouth portion and attaching the mounting cap to the mouth portion. The pump device is configured to be in close contact with the upper end surface and attached to the container body.

Japanese Patent Laid-Open No. 10-128178

  However, in the discharge container as described in Patent Document 1, for example, after the contents are exhausted, when the consumer replaces the pump device with another container body that contains the contents, it is mounted. If the cap is screwed incompletely, or if the upper end surface of the mouth or the packing seal is damaged, etc., outside air will enter the housing from the gap between the mouth and the pump device. When the pump device is driven, an air pocket (the suction port of the pump device is wrapped in the invading air) is generated, especially when the content is of high viscosity. There was a possibility that the discharge of the water was hindered.

  The present invention has been developed in view of such a problem, and provides a discharge container that can reduce the amount of contents that cannot be discharged due to the intrusion of outside air into the housing portion of the container body. The purpose is to do.

The discharge container according to the present invention is
A container body having a cylindrical mouth portion;
A pump device attached to the mouth,
The container body has an accommodating portion that is connected to the mouth portion and accommodates contents, and that undergoes volume reduction deformation as the contents are discharged by the pump device,
The inner peripheral surface of the mouth portion is provided with an annular convex portion that protrudes radially inward and can be in close contact with the pump device over the entire circumference.

In the discharge container according to the present invention,
A mounting cap mounted on the mouth portion via a screw portion;
The mounting cap can be attached to the mouth by attaching the pump device to the mouth.
It is preferable that the annular convex portion can be in close contact with the pump device over the entire circumference when the mounting cap is not completely screwed into the mouth portion.

In the discharge container according to the present invention,
The container body is a laminated peeling container having an outer layer body that forms an outline of the container body, and an inner layer body that is disposed inside the outer layer body and is peelable from the outer layer body,
It is preferable that the housing portion is constituted by the inner layer body.

Furthermore, in the discharge container according to the present invention,
The pump device is
A cylinder attached to the mouth;
A stem that is disposed in the cylinder so as to be vertically movable in an upwardly biased state, and that divides a flow path of the contents inside,
A piston that can slide up and down in the cylinder as the stem moves up and down;
A discharge valve provided on the stem that opens when the piston moves downward, and closes when the piston moves upward;
A suction valve provided in the cylinder, which closes when the piston moves downward, and opens when the piston moves upward;
It is preferable that the annular convex portion can be in close contact with the cylinder over the entire circumference.

  According to the present invention, it is possible to provide a discharge container that can reduce the amount of contents that cannot be discharged due to the intrusion of outside air into the housing portion of the container body.

It is a partial side sectional view showing the state where the mounting cap was completely screwed into the mouth portion of the discharge container according to the embodiment of the present invention. FIG. 4 is a partial side cross-sectional view showing a state in which the mounting cap is screwed incompletely into the mouth portion of the discharge container according to the embodiment of the present invention. FIG. 3 is a partially enlarged view of FIG. 2.

  Hereinafter, with reference to FIGS. 1-3, the discharge container 1 which concerns on one Embodiment of this invention is illustrated and demonstrated in detail. In the present specification, the vertical direction means a direction along the central axis O of the mouth 2, and the mouth 2 side is the upper side and the bottom 18 side is the lower side as viewed from the container body 3.

  As shown in FIG. 1, the discharge container 1 according to the present embodiment includes a container main body 3 having a cylindrical mouth portion 2 and a pump device 4 attached to the mouth portion 2. The container main body 3 has a storage portion 5 that is connected to the mouth portion 2 to store the contents and that undergoes volume reduction deformation as the content is discharged by the pump device 4. On the inner peripheral surface of the mouth portion 2, there is provided an annular convex portion 6 that protrudes radially inward and can be in close contact with the pump device 4 over the entire circumference.

  The discharge container 1 further includes a mounting cap 8 that is mounted on the mouth portion 2 via the screw portion 7, and the mounting cap 8 is attached to the mouth portion 2 to attach the pump device 4 to the mouth portion 2. It is possible. As shown in FIGS. 2 to 3, the annular convex portion 6 can be in close contact with the pump device 4 over the entire circumference when the mounting cap 8 is not completely screwed into the mouth portion 2. As shown in FIG. 1, the annular convex portion 6 can be in close contact with the pump device 4 even when the mounting cap 8 is completely screwed into the mouth portion 2.

  However, such a configuration is not essential, and the pump device 4 may be configured to be attached to the mouth portion 2 without using the mounting cap 8. For example, the pump device 4 may be attachable to the mouth portion 2 by fitting through an undercut shape or the like.

  The container main body 3 includes an outer layer body 9 that forms an outline of the container main body 3, and an inner layer body 10 that is disposed inside the outer layer body 9 and that can be peeled from the outer layer body 9. The accommodating portion 5 is configured by the inner layer body 10. However, the container body 3 is not limited to such a delamination container.

  For example, the container body 3 may be a double container. In this case, the double container has an outer body that forms the outer shell of the container main body, and a bag body that is formed separately from the outer shell body and is disposed inside the outer shell body, and is accommodated by the bag body. The part is composed.

  The container body 3 may be a thin container. In this case, the thin-walled container may be a blow-molded container having a mouth part and a storage part.

  In addition, the thin container may be obtained by joining the mouth portion and the accommodating portion. In this case, the thin-walled container may be a pouch (bag-shaped) container having a spout that constitutes the mouth portion and a pouch that is constituted by a resin film or the like and constitutes the accommodating portion. In this case, the pouch container has a spout having a mouth portion and a projecting portion projecting in a flange shape (diamond shape, elliptical shape, etc.) from the mouth portion, and the opening portion of the pouch is welded to the projecting portion. It is good.

  The pump device 4 includes a cylinder 11 attached to the mouth portion 2, a stem 12 which is disposed in the cylinder 11 so as to be vertically movable in an upwardly biased state, and divides a flow path of contents inside, and an upper and lower portions of the stem 12. A piston 13 slidable up and down in the cylinder 11 along with the movement, a discharge valve 14 provided on the stem 12 and opened when the piston 13 moves downward, and closed when the piston 13 moves upward, and the cylinder 11 And a suction valve 15 that closes when the piston 13 moves downward and opens when the piston 13 moves upward. The annular convex portion 6 can be in close contact with the cylinder 11 over the entire circumference. However, the pump device 4 is not limited to such a configuration.

  As mentioned above, according to the discharge container 1 which concerns on this embodiment demonstrated, the annular convex part 6 provided in the internal peripheral surface of the opening part 2 was made to the pump apparatus 4 over the perimeter as shown in FIG. Since the close contact portion can function as a seal portion by close contact, for example, after the content is lost, the consumer replaces the pump device 4 with another container body 3 containing the content. Even when the upper end surface 16 of the mouth portion 2 or the packing seal 17 to be brought into contact with the upper end surface 16 is damaged, the outside air can be removed from the gap between the mouth portion 2 and the pump device 4. Can be prevented from entering the interior of the housing 5.

  Therefore, for example, as shown by a two-dot chain line curved in FIG. 1, the air pocket (the suction port (not shown) of the pump device 4) is wrapped in the invading air, and the accommodating portion 5 is not reduced in volume. The upper side of the two-dot chain line is air and the lower side is the contents.), So that the amount of contents remaining without being discharged can be reduced. Here, in order to explain the air pocket, the air pocket is shown in FIG. 1, but the discharge container 1 according to the present embodiment has the annular convex portion 6, so that such an air pocket is generated. Is prevented.

  Moreover, as shown in FIGS. 2 to 3, the annular convex portion 6 can be closely attached to the pump device 4 over the entire circumference when the mounting cap 8 is not completely screwed into the mouth portion 2. Even when the screwing of the cap 8 is incomplete, the outside air is prevented from entering the inside of the housing portion 5 from the gap between the mouth portion 2 and the pump device 4, and as a result, the contents that cannot be discharged and remain The amount of can be reduced. Note that such incomplete screwing of the mounting cap 8 causes, for example, after the contents of the container main body 3 have disappeared, the consumer or the like puts the pump device 4 on the other container main body 3 containing the contents. This may occur when using with a different name.

  Moreover, since the container main body 3 is a lamination peeling container, it can be obtained simply and inexpensively by blow molding.

  Furthermore, since the discharge container 1 includes the pump device 4 having a general configuration including the cylinder 11, the stem 12, the piston 13, the discharge valve 14, and the suction valve 15, the discharge container 1 can be obtained easily and inexpensively.

  Below, the detail of each part of the discharge container 1 which concerns on this embodiment is illustrated and demonstrated.

  The container body 3 is formed by laminating the synthetic resin material of the outer layer body 9 and the synthetic resin material of the inner layer body 10 and extruding them into a tube shape, sandwiching them with a mold, and blowing air into the interior to form a hollow product (Extrusion). (Blow Molding / extrusion blow molding method).

  As the material of the outer layer body 9, for example, low density polyethylene (LDPE), high density polyethylene resin (HDPE), polypropylene (PP), or the like can be used. As a material of the inner layer body 10, for example, ethylene-vinyl alcohol copolymer resin (EVOH), nylon, or the like can be used. In addition, as the material of the outer layer body 9 and the inner layer body 10, other resins having low compatibility can be used. Further, an adhesive band may be appropriately provided between the outer layer body 9 and the inner layer body 10.

  As shown in FIG. 2, the container body 3 uses a pinch-off portion 19 formed on the bottom portion 18 as a bottom crack (outside air introduction hole for introducing outside air between the outer layer body 9 and the inner layer body 10 ( (Slit) type. However, the outside air introduction hole may be provided in the trunk portion 20 of the container body 3, for example.

  Instead of EBM molding, it may be formed by blow molding such as biaxial stretch blow molding in which a hollow product is formed from a preform (container material) formed in a bottomed cylindrical shape. The layer structure of the outer layer body 9 and the inner layer body 10 may be a single layer or a stacked layer.

  The mouth portion 2 of the container body 3 has a cylindrical shape. The mouth portion 2 may have a cylindrical shape other than the cylindrical shape. Further, as shown in the figure, the central axis of the trunk portion 20 coincides with the central axis O of the mouth portion 2.

  The mouth portion 2 is provided with a male screw portion 21 that constitutes a screw portion 7 for mounting the mounting cap 8. The male screw portion 21 is configured to be screwed into a female screw portion 22 provided in the mounting cap 8.

  As shown in FIG. 3, the portion below the male screw portion 21 in the mouth portion 2 has a uniform height H and width W from the inner circumferential surface of the mouth portion 2 to the inner side in the radial direction over the entire circumference. A protruding annular convex portion 6 is provided. The annular convex portion 6 has a substantially semicircular cross-sectional shape by a plane including the central axis O.

  On the outer peripheral surface of the mouth portion 2, an annular recess 23 having a substantially semicircular cross-sectional shape corresponding to the cross-sectional shape of the annular convex portion 6 is formed on a portion located on the back side of the annular convex portion 6. . The annular recess 23 is recessed with a uniform depth D and width V from the outer peripheral surface of the mouth portion 2 toward the radially inner side over the entire periphery. The size and shape of the annular convex portion 6 can be freely set by adjusting the depth D and the width V of the annular concave portion 23.

  As shown in FIGS. 2 to 3, a portion of the mouth portion 2 below the annular convex portion 6 and the annular concave portion 23 has a dome shape that gradually increases in diameter toward the upper end portion of the cylindrical barrel portion 20. The shoulder 24 is continuous. A bottom 18 is connected to the lower end of the body 20.

  The pump device 4 includes a cylinder 11, a stem 12, a piston 13, a discharge valve 14, and a suction valve 15. The cylinder 11 has a cylindrical cylinder body 25 in which a stem 12, a piston 13, a discharge valve 14 and a suction valve 15 are arranged on the radially inner side, and a radially outer side from the upper part of the cylinder body 25 over the entire circumference. And an annular packing portion 17 provided on the lower surface of the flange portion 26.

  An upper end member 27 is attached to the upper end portion of the cylinder body portion 25. A mounting cap 8 is rotatably held between the flange portion 26 and the upper end member 27 so as to be rotatable. A cylindrical suction pipe 28 is attached to the lower end of the cylinder body 25.

  The stem 12 includes a cylindrical upper stem 29 and a lower stem 30 attached to the lower portion of the upper stem 29. The lower stem 30 includes a plurality of connecting walls 31 that are arranged at intervals in the circumferential direction and each extend in the vertical direction. In addition, the some connection wall 31 is mutually connected by the reinforcement rib 32 extended in radial direction. The piston 13 is held between the upper stem 29 and the lower stem 30 so as to move up and down relatively with respect to the stem 12. Therefore, the discharge valve 14 is configured by a portion where the piston 13 and the lower stem 30 can contact each other.

  The stem 12 is urged upward by a coil spring 33 disposed between the suction valve 15 and the stem 12. The suction valve 15 includes a valve body 34 and a valve base 35 that is connected to the valve body 34 and can come into contact with the stem 12 when the stem 12 moves to the lower end. The valve base 35 has an opening (not shown) that allows the contents to be sucked up by opening the valve body 34 to the stem 12 side.

  A push-down head 36 is attached to the upper end of the stem 12, and the content is sucked up through the stem 12 by pushing down the push-down head 36 against the upward biasing force, and the nozzle 37 of the push-down head 36. It can be discharged from.

  According to such a configuration, when the suction pipe 28 and the cylinder 11 of the pump device 4 are inserted from the mouth portion 2 of the container body 3 and the attachment cap 8 is attached to the mouth portion 2, as shown in FIG. Even if the mounting cap 8 is not completely screwed into the portion 2, the annular convex portion 6 is in close contact with the outer peripheral surface of the cylinder main body portion 25 of the cylinder 11, so that the mouth portion 2 and the pump device 4 It is possible to prevent outside air from entering the inside of the housing portion 5 from the gap between the packing seal 17 and the packing seal 17. Therefore, it is possible to reduce the amount of contents that cannot be discharged by the pump device 4 and remain in the housing portion 5.

  Although various embodiments of the present invention have been described above, the above description is merely an example of the present invention, and it goes without saying that various modifications may be made without departing from the gist of the invention.

DESCRIPTION OF SYMBOLS 1 Discharge container 2 Mouth part 3 Container body 4 Pump apparatus 5 Accommodating part 6 Annular convex part 7 Screw part 8 Mounting cap 9 Outer layer body 10 Inner layer body 11 Cylinder 12 Stem 13 Piston 14 Discharge valve 15 Suction valve 16 Upper end surface 17 Packing seal 18 Bottom part 19 Pinch-off part 20 Body part 21 Male thread part 22 Female thread part 23 Annular recess 24 Shoulder part 25 Cylinder body part 26 Flange part 27 Upper end member 28 Suction pipe 29 Upper stem 30 Lower stem 31 Connecting wall 32 Reinforcement rib 33 Coil spring 34 Valve body 35 Valve base 36 Pressing head 37 Nozzle O Center axis H Height W Width D Depth V Width

Claims (4)

A container body having a cylindrical mouth portion;
A pump device attached to the mouth,
The container body has an accommodating portion that is connected to the mouth portion and accommodates contents, and that undergoes volume reduction deformation as the contents are discharged by the pump device,
A discharge container, characterized in that an annular convex portion is provided on an inner peripheral surface of the mouth portion so as to protrude radially inward and be in close contact with the pump device over the entire circumference. A mounting cap mounted on the mouth portion via a screw portion;
The mounting cap can be attached to the mouth by attaching the pump device to the mouth.
2. The discharge container according to claim 1, wherein the annular convex portion can be in close contact with the pump device over the entire circumference when the mounting cap is not completely screwed into the mouth portion. The container body is a laminated peeling container having an outer layer body that forms an outline of the container body, and an inner layer body that is disposed inside the outer layer body and is peelable from the outer layer body,
The discharge container according to claim 1 or 2, wherein the container is constituted by the inner layer body. The pump device is
A cylinder attached to the mouth;
A stem that is disposed in the cylinder so as to be vertically movable in an upwardly biased state, and that divides a flow path of the contents inside,
A piston that can slide up and down in the cylinder as the stem moves up and down;
A discharge valve provided on the stem that opens when the piston moves downward, and closes when the piston moves upward;
A suction valve provided in the cylinder, which closes when the piston moves downward, and opens when the piston moves upward;
The discharge container according to any one of claims 1 to 3, wherein the annular convex portion can be in close contact with the cylinder over the entire circumference.

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