JP2023125511A - Coating container - Google Patents

Abstract

To provide a coating container capable of preventing outside air from flowing into an inner container.SOLUTION: A coating container 1 comprises: a container body 2 having an inner container 5 and an outer container 4; an inner plug member 20 having a communication hole 21 communicating with the inside of the container body 2 formed therein; a check valve 31 coming in close contact with an opening peripheral edge of the communication hole 21 of the inner plug member 20 so as to be upwardly separable; a discharge cylinder member 40 forming a storage chamber S communicating with the inside of the container body 2 via the communication hole 21 between the discharge cylinder member 40 and the inner plug member 20, and having a discharge hole 41 communicating with the storage chamber S at an upper end; and a coating plug 32 provided in the storage chamber S and having its upper end projected to the outside of the storage chamber S through the discharge hole 41. An air discharge passage A for discharging air to the outside from the storage chamber S through the discharge hole 41 is formed between a seal part 32b and the opening peripheral edge of the discharge hole 41 when the coating plug 32 is located at a cut-off position.SELECTED DRAWING: Figure 2

Description

The present invention relates to a coating container.

Patent Document 1 discloses a coating container that includes a container body that includes an inner container that stores contents, an outer container that houses the inner container, and an inner stopper that is attached to the mouth of the container body. has been done. In this application container, the inner container is deformed to reduce its volume as the content decreases, the outer container is deformable by squeezing, and the outer container is provided with communication between the outside of the container body and the inside of the outer container, An intake hole for sucking air is formed between the outer container and the inner container.

JP2019-209973A

In the above application container, after the contents are discharged, the inner container may be slightly restored and deformed, and outside air may flow into the inner container. If outside air flows into the inner container, there may be concerns about deterioration or deterioration depending on the type of contents.

The present invention has been made in view of these circumstances, and its purpose is to provide a coating container that can suppress outside air from flowing into the inner container.

(1) The application container according to the present invention includes an inner container that stores a content and is deformed to reduce its volume as the content decreases, and the inner container is installed inside and outside air is sucked between the inner container and the inner container. a container body comprising an outer container provided with an intake hole; an inner plug member attached to the mouth of the container body and having a communication hole communicating with the inside of the container body; and the communication in the inner plug member. A check valve that is in close contact with the opening periphery of the hole so that it can be separated upwardly, and a storage chamber that communicates with the container body through the communication hole are formed between the inner plug member and the upper end portion. a discharge cylinder member in which a discharge hole communicating with the storage chamber is formed; and a coating plug provided in the storage chamber and having an upper end protruding from the discharge hole to the outside of the storage chamber, The plug includes a seal portion that is in close contact with the opening peripheral edge of the discharge hole in the discharge cylinder member so as to be releasable downward, and has a blocking position that blocks communication between the discharge hole and the storage chamber; The seal portion is provided so as to be movable up and down between a coating position located below a blocking position and communicating the discharge hole and the storage chamber, and when the coating plug is located in the blocking position An air discharge path is formed between the opening peripheral portion of the discharge hole and the air discharge path for discharging air from the storage chamber to the outside via the discharge hole.

According to the application container according to the present invention, by pressing the outer container and deforming the inner container together with the outer container to reduce the volume, the internal pressure of the inner container can be increased and the check valve can be opened. Thereby, the communication hole of the inner plug member can be communicated with the inside of the container body, and the storage chamber inside the discharge cylinder member can be filled with the contents from the communication hole. After filling the storage chamber with the contents, when the pressure on the outer container is released, the check valve prevents the contents and outside air from flowing into the inner container from the communication hole, and also prevents the contents and outside air from flowing into the inner container from the communication hole. By introducing outside air between the outer container and the inner container through the intake hole, the outer container can be restored to its original shape while the inner container is deformed to reduce its volume, so the contents from the inner container can be replaced with outside air. This makes it difficult for the contents inside the inner container to come into contact with air, thereby suppressing their deterioration and deterioration.

To apply the contents filled in the storage chamber, the applicator is moved from the blocking position to the applying position by, for example, turning the applicator container in an upright position into an inverted position and pressing the applicator against the area to be coated. At this time, the applicator plug moves toward the inside of the storage chamber while being elastically deformed, and the seal portion that is in close contact with the periphery of the opening of the discharge hole is separated from the periphery of the opening. Thereby, the storage chamber and the discharge hole communicate with each other, and the contents of the storage chamber are discharged from the discharge hole to the outside of the container. When the application stopper is released from being pressed against the part to be coated, the application stopper is restored and deformed and moves toward the outside of the storage chamber, so that the seal portion comes into close contact with the opening periphery of the discharge hole. This blocks communication between the storage chamber and the discharge hole. Therefore, the contents of the storage chamber are prevented from being further discharged from the discharge hole to the outside of the container.

In this way, in the application container, the storage chamber formed inside the discharge cylinder member is filled with the contents, and the contents are sequentially discharged from the storage chamber, so that when the outer container returns from squeeze deformation, In addition, even if the inner container is slightly restored and deformed, the filling seal by the contents in the storage chamber (a state in which the contents form a wall and prevent air from passing through) will prevent outside air from entering the inner container through the communication hole. can be suppressed. More specifically, when the contents are discharged by opening and closing the applicator stopper, the check valve is completely closed, so outside air will not enter the inner container, but when the squeeze operation is released, the outer container will not be able to recover. The inner container may recover slightly as if being pulled. If the check valve is not completely seated when the inner container is restored, there is a concern that air may be sucked in. In this coating container, since the storage chamber is filled with the contents, even if the air is drawn into the inner container, it is not air but the contents in the storage chamber. Therefore, it is possible to suppress air from flowing into the inner container.
Further, when the applicator plug is located at the blocking position, an air discharge path is formed between the seal portion and the opening peripheral portion of the discharge hole to discharge air from the storage chamber to the outside via the discharge hole. Therefore, when pressing the outer container to fill the storage chamber with contents, the air inside the storage chamber can be pushed out from between the seal portion and the opening periphery of the discharge hole to the outside of the container. As a result, in a state where communication between the storage chamber and the discharge hole is cut off, the storage chamber can be filled with the contents while pushing out the air inside the storage chamber to the outside of the container, and a filling seal can be formed by the contents. .

(2) The air discharge path may be formed by a textured surface provided on at least one of the seal portion and the opening peripheral portion of the discharge hole.

In this case, the fine irregularities of the textured surface can form an air discharge path through which the contents are difficult to pass, but through which air can pass.

(3) The discharge cylindrical member is provided with an air hole that communicates the intake hole with the outside, and includes an air valve that closes the air hole so that it can be opened from the intake hole side of the discharge cylindrical member. , the check valve, the application plug, and the air valve may be integrally molded.

In this case, since the check valve, application plug, and air valve are integrally molded, the number of parts and assembly cost can be reduced.

According to the coating container according to the present invention, it is possible to suppress outside air from flowing into the inner container.

FIG. 2 is a partial cross-sectional view of the side surface of the coating container according to the first embodiment of the present invention. FIG. 2 is an enlarged sectional view of a main part of the coating container shown in FIG. 1. FIG. FIG. 7 is an enlarged cross-sectional view of main parts of a coating container according to a second embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the coating container based on this invention is described with reference to drawings.

(First embodiment)
As shown in FIG. 1, the coating container 1 of the first embodiment includes a container body 2 and a coating cap 3.

The container body 2 includes a highly flexible inner container 5 that accommodates contents (not shown) and undergoes volume reduction deformation (shrinking deformation) as the contents decrease, and an outer container 4 in which the inner container 5 is placed inside. It is equipped with The outer container 4 can be deformed by squeezing, and as the outer container 4 is deformed by squeezing, the inner container 5 is deformed to reduce its volume. Therefore, at least the portion of the outer container 4 located in the body 2b of the container body 2 is elastically deformable toward the inside of the container.

The container body 2 is formed by blow molding, and is a laminated peelable container (delami bottle) in which an inner container 5 is peelably laminated on the inner surface of an outer container 4.
Specifically, it is formed by extrusion blow molding using a cylindrical parison formed by laminating the synthetic resin forming the outer container 4 and the synthetic resin forming the inner container 5, which has low compatibility with the outer container 4. ing.
The materials of the inner container 5 and the outer container 4 are not particularly limited, but for example, the outer container 4 is made of polyethylene or polypropylene, and the inner container 5 is made of ethylene vinyl alcohol copolymer.
Note that a preform for the outer container 4 and a preform for the inner container 5 are formed by injection molding or the like, and after these are combined into a double layer (inside and outside), the container body 2 is formed by biaxial stretch blow molding. Alternatively, the preform for the outer container 4 may be first biaxially stretched blow molded to form the outer container 4, then the preform for the inner container 5 is placed inside, and then the preform for the inner container 5 is formed. The container body 2 may be formed by biaxial stretch blow molding a preform.

In this case as well, the materials of the inner container 5 and the outer container 4 are not particularly limited, but are made of, for example, PET (polyethylene terephthalate) resin. However, the materials of the inner container 5 and the outer container 4 may be the same or different materials as long as they are a combination that can be peeled off. Examples of synthetic resin materials include PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), nylon (polyamide), EVOH (ethylene-vinyl alcohol copolymer), and the like. Among these synthetic resin materials, it is preferable that the outer container 4 and the inner container 5 be formed of a combination that is removable (not compatible).

The container body 2 is formed into a bottomed cylindrical shape in which a mouth portion 2a, a body portion 2b, and a bottom portion 2c are successively arranged from the top. The container main body 2 has a shape in which the mouth portion 2a is inclined forward with respect to the body portion 2b.

The axis O1 shown in FIG. 1 is the central axis of the bottom portion 2c. The axis O1 passes through the center of the bottom portion 2c and extends perpendicularly to the bottom surface of the bottom portion 2c. Moreover, the axis O2 shown in FIG. 1 is the central axis of the mouth portion 2a. The axis O2 passes through the center of the opening 2a and coincides with the central axis of the applicator cap 3 attached to the opening 2a.

As shown in FIG. 1, when the coating container 1 is in an upright position with the bottom surface of the bottom portion 2c grounded on a horizontal surface, the axis O1 extends in the vertical direction. Further, in the upright position of the application container 1, the axis O2 is inclined forward with respect to the axis O1, and extends obliquely forward and upward from the intersection with the axis O1.

In addition, in the following description, the applicator cap 3 side along the axis O2 will be referred to as an upper side, and the opposite side will be referred to as a lower side. Further, in a plan view seen from the direction of the axis O2, the direction intersecting the axis O2 is called the radial direction, and the direction going around the axis O2 is called the circumferential direction.

As shown in FIG. 2, the opening 2a of the container body 2 is formed to extend upward along the axis O2. The mouth part 2a of the container body 2 has a structure in which the mouth part of the inner container 5 and the mouth part of the outer container 4 are stacked. The upper end of the mouth of the inner container 5 is folded back into an annular shape that projects outward in the radial direction, and this folded part is arranged at the upper end opening edge of the mouth of the outer container 4. Therefore, the mouth of the outer container 4 is closed by the inner container 5. A male threaded portion is formed on the outer peripheral surface of the mouth portion of the outer container 4 .

An intake hole 6 for sucking outside air is formed at the mouth of the outer container 4 between the outer container 4 and the inner container 5. In addition, the intake hole 6 may be formed in the body part 2b or the bottom part 2c shown in FIG. 1 other than the mouth part 2a of the outer container 4, and the outside air may be directly inhaled. Further, for example, when the intake hole 6 is formed in the body part 2b or the bottom part 2c, an air valve (check valve) is provided in the body part 2b or the bottom part 2c, and the air valve allows the inner container 5 and the outer container to While allowing air to be inhaled between the inner container 5 and the outer container 4, air may be prevented from flowing out from between the inner container 5 and the outer container 4.

As shown in FIG. 2, the applicator cap 3 includes a mounting cylinder section 10, an inner plug member 20, an application plug unit 30, a discharge cylinder member 40, and a lid body 50 (overcap).

The mounting cylinder part 10 includes a lower cylinder part 11 screwed onto the mouth part 2a of the container body 2, and an upper cylinder part 12 connected to the upper end of the lower cylinder part 11. The inner peripheral surface of the lower cylindrical portion 11 is formed with a female threaded portion that is screwed into the male threaded portion of the mouth portion 2a of the container body 2. The lower cylindrical portion 11 surrounds the portion of the mouth portion 2a of the container body 2 in which the intake hole 6 is formed from the outside in the radial direction, and also surrounds the outer circumferential surface of the mouth portion 2a in a portion located below the intake hole 6. It is in close contact with the entire circumference.

A male threaded portion is formed on the outer peripheral surface of the upper cylindrical portion 12 . The upper cylinder part 12 surrounds the inner plug member 20, the application plug unit 30, and the discharge cylinder member 40 from the outside in the radial direction. An annular stepped portion 13 is formed on the inner circumferential surface of the upper cylindrical portion 12. The annular stepped portion 13 vertically faces the upper opening edge of the mouth portion 2a of the container body 2 and sandwiches the inner plug member 20 in the vertical direction. Above the stepped portion 13 on the inner circumferential surface of the upper cylinder portion 12, a contact rib 14, with which the flange portion 42 of the discharge cylinder member 40 abuts from below, protrudes radially inward. The contact ribs 14 extend in the vertical direction and are provided in plurality at intervals in the circumferential direction.

Above the contact rib 14 on the inner circumferential surface of the upper cylinder part 12, a fitting protrusion 15 that fits undercut into the discharge cylinder member 40 is provided to protrude radially inward. The fitting protrusions 15 are provided intermittently in the circumferential direction, and outside air introduction grooves 15a are formed in the gaps between the fitting protrusions 15. The outside air introduction groove 15a introduces outside air from the gap between the upper end opening of the upper side cylinder part 12 and the discharge cylinder member 40 into the gap space between the upper side cylinder part 12 and the discharge cylinder member 40.

The inner plug member 20 is attached to the opening 2a of the container body 2 via the attachment tube 10, and has a communication hole 21 that communicates with the inside of the container body 2. The inner plug member 20 includes an annular base portion 22 disposed on the upper opening end of the mouth portion 2a of the container body 2, and a cylindrical clamped portion 23 that protrudes upward from the outer peripheral edge of the base portion 22. , a communication cylinder part 24 having a crested cylinder shape and projecting upward from the inner peripheral edge of the base part 22.

The upper end surface of the clamped portion 23 is in contact with the stepped portion 13 of the above-mentioned upper cylinder portion 12 of the mounting cylinder portion 10 in the vertical direction. A slit 23a is formed in the held portion 23 from its upper end surface to its outer peripheral surface. The slit 23a communicates the space inside the held part 23 with the space inside the lower cylinder part 11. A communication hole 21 is formed in the center of the top wall of the communication cylinder portion 24 and penetrates in the vertical direction. The peripheral edge of the opening of the communication hole 21 on the top wall of the communication cylinder portion 24 projects in a cylindrical shape and serves as a valve seat for the check valve 31 .

A housing cylinder part 25 is provided on the upper surface of the base part 22 on the radially outer side of the communication cylinder part 24 to project upward. The accommodating cylinder part 25 surrounds the communication cylinder part 24 from the outside in the radial direction with a gap between the housing cylinder part 25 and the communication cylinder part 24 . As a result, a portion surrounded by the base portion 22, the communication tube portion 24, and the housing tube portion 25 is an annular space that opens upward. Furthermore, a seal cylinder part 26 is provided on the lower surface of the base part 22 on the radially outer side of the housing cylinder part 25 to project downward. The seal cylinder portion 26 tightly fits inside the mouth portion 2a of the container body 2 to seal the mouth portion 2a of the container body 2.

The applicator plug unit 30 includes a check valve 31 , an applicator plug 32 , and an air valve 33 that are integrally molded via a fitting cylindrical portion 34 . The applicator plug unit 30 is integrally molded from an elastically deformable material (elastic material). A lower end portion of the fitting cylinder portion 34 is fitted into an annular space surrounded by the base portion 22, the communication cylinder portion 24, and the housing cylinder portion 25 of the inner plug member 20. The upper end of the fitting cylindrical portion 34 extends higher than the upper end of the communicating cylindrical portion 24 . A check valve 31 is provided inside the upper end of the fitting cylinder 34 and is in close contact with the opening periphery of the communication hole 21 in the inner plug member 20 so as to be able to separate upward.

The check valve 31 is formed, for example, in a circular shape in plan view. The check valve 31 is connected to the inner peripheral surface of the fitting cylinder portion 34 via a plurality of elastic arms 31a. For example, the elastic arm 31a is formed to extend in the circumferential direction to ensure appropriate springiness, and the inner end in the radial direction is connected to the outer peripheral edge of the check valve 31, and the elastic arm 31a is formed to extend in the circumferential direction. The outer end portion of is connected to the fitting cylinder portion 34. When the contents inside the inner container 5 pass through the communication hole 21 of the inner plug member 20, the elastic arm 31a is elastically deformed so as to move the check valve 31 upward. 31 is separated from the upper surface of the opening periphery of the communication hole 21.
Note that the configurations of the application plug 32 and the air valve 33 will be explained after the discharge cylinder member 40.

The discharge cylinder member 40 is formed into a capped cylinder shape that forms a storage chamber S communicating with the inside of the container body 2 through the communication hole 21 between the discharge cylinder member 40 and the inner plug member 20 . A discharge hole 41 is formed in the center of the upper end of the discharge cylinder member 40, penetrating in the vertical direction and communicating with the storage chamber S. An annular flange portion 42 extending radially outward is formed at the lower end of the discharge cylinder member 40 . The flange portion 42 contacts the contact rib 14 of the mounting cylinder portion 10 from below.

An air hole 42a that penetrates in the vertical direction is formed on the radially inner side of the portion of the flange portion 42 that abuts the abutment rib 14. The air holes 42a communicate the gap space between the discharge cylinder member 40 and the upper cylinder part 12 and the gap space between the outer container 4 and the lower cylinder part 11. As a result, the air is connected to the outside of the container through the outside air introduction groove 15a, the gap space between the discharge cylinder member 40 and the upper cylinder part 12, the air hole 42a, the slit 23a, and the gap space between the outer container 4 and the lower cylinder part 11. The air intake hole 6 can be communicated with the air intake hole 6 .

The inner circumferential surface of the peripheral wall of the discharge cylinder member 40 has an annular recess 43 that vertically faces the base part 22 of the inner plug member 20 and vertically sandwiches the fitting cylinder part 34 between the base part 22 and the base part 22 . is formed. Furthermore, an annular protrusion 44 that protrudes radially outward is formed on the outer circumferential surface of the upper end of the circumferential wall of the discharge cylinder member 40 . An annular groove 44a is formed in the outer peripheral surface of the annular protrusion 44 in the circumferential direction. The fitting protrusion 15 of the upper cylindrical portion 12 is undercut fitted into the annular groove 44a.

The coating plug 32 is provided in the storage chamber S inside the discharge cylinder member 40, and has an upper end protruding from the discharge hole 41 to the outside of the storage chamber S. Note that the upper end of the applicator plug 32 is inserted into an applicator member 60 attached to the upper surface of the top wall of the discharge cylinder member 40. As the application member 60, for example, an elastically deformable sponge body can be used. The application stopper 32 is connected to the upper end of the fitting cylinder part 34 in the storage chamber S via the elastic support part 32a. For example, two elastic support portions 32a are provided, and are bent into a crank shape so that the distance between them increases toward the bottom. Such elastic support portion 32a can be formed, for example, by using a mold that is divided into two parts in the radial direction.

The applicator plug 32 includes a seal portion 32b that is in close contact with the opening peripheral portion of the discharge hole 41 in the discharge cylinder member 40 so as to be releasable downward. The seal portion 32b has a conical surface that becomes larger in diameter than the discharge hole 41 as it goes downward. The application stopper 32 has two positions: a blocking position (see FIG. 2) where communication between the discharge hole 41 and the storage chamber S is interrupted (see FIG. 2), and a coating position where the discharge hole 41 and the storage chamber S are communicated with each other, which is located below the blocking position. It is provided so that it can move up and down between . An air discharge path A is formed between the seal portion 32b and the opening periphery of the discharge hole 41, which discharges air from the storage chamber S to the outside through the discharge hole 41 when the applicator plug 32 is located at the blocking position. has been done. The air exhaust path A of this embodiment is formed by a textured surface (a finely uneven surface) provided on the outer surface of the seal portion 32b.

The air valve 33 is an elastically deformable valve body that protrudes in an annular shape from the outer peripheral surface of the fitting cylinder portion 34 toward the outside in the radial direction, and has a free outer end. The outer end of the air valve 33 is in contact with the lower surface of the flange portion 42 over the entire circumference so that it can be separated from below. Thereby, the air valve 33 closes the air hole 42a so that it can be opened from the intake hole 6 side of the discharge cylinder member 40. In other words, the air valve 33 functions as a check valve that allows outside air to flow in from the outside through the air hole 42a, and also restricts the outflow of outside air to the outside of the container through the intake hole 6 when the outer container 4 is squeeze-deformed. do.

The lid body 50 has a capped cylindrical shape. A female threaded portion is formed on the inner circumferential surface of the peripheral wall 51 of the lid body 50 to be screwed into the male threaded portion of the upper cylinder portion 12 . A cover cylinder 53 is vertically provided on the lower surface of the top wall 52 of the lid body 50. The cover cylinder 53 is fitted to the upper end of the upper cylinder part 12 on the radially outer side of the upper cylinder part 12 .

To apply the contents from the application container 1 of the present embodiment described above, first, as shown in FIG. 2, the lid body 50 is removed from the mounting cylinder section 10, and the application stopper 32 and the discharge cylinder member 40 are exposed to the outside of the container. .

Next, the outer container 4 is pressed to reduce the volume of the inner container 5 together with the outer container 4, thereby increasing the internal pressure of the inner container 5 and opening the check valve 31. Thereby, the communication hole 21 of the inner plug member 20 and the inside of the container body 2 can be communicated with each other, and the storage chamber S inside the discharge cylinder member 40 can be filled with the contents from the communication hole 21. After filling the storage chamber S with the contents, when the pressure on the outer container 4 is released, the check valve 31 prevents the contents and outside air from flowing into the inner container 5 from the communication hole 21. By introducing outside air between the outer container 4 and the inner container 5 through the intake hole 6 provided in the outer container 4, the outer container 4 can be restored to its original shape while the inner container 5 is deformed to reduce its volume. Therefore, the contents can be discharged from the inner container 5 into the storage chamber S without being replaced with outside air, thereby making it difficult for the contents inside the inner container 5 to come into contact with air, thereby suppressing deterioration and deterioration of the contents.

To apply the contents filled in the storage chamber S, the applicator container 1 is turned from an upright position to an inverted position, and the applicator plug 32 is moved from the blocking position to the application position by, for example, pressing the applicator plug 32 against the part to be applied. move it to At this time, the applicator plug 32 moves toward the inside of the storage chamber S while being elastically deformed, and the seal portion 32b that is in close contact with the periphery of the opening of the discharge hole 41 is separated from the periphery of the opening. Thereby, the storage chamber S and the discharge hole 41 communicate with each other, and the contents of the storage chamber S are discharged from the discharge hole 41 to the outside of the container. When the application stopper 32 is released from being pressed against the part to be coated, the application stopper 32 is restored and deformed and moves toward the outside of the storage chamber S, so that the seal portion 32b is brought into close contact with the opening periphery of the discharge hole 41. do. Thereby, communication between the storage chamber S and the discharge hole 41 is cut off. Therefore, the contents of the storage chamber S are prevented from being further discharged from the discharge hole 41 to the outside of the container.

In this manner, in the application container 1, the storage chamber S formed inside the discharge cylinder member 40 is filled with the contents, and the contents are sequentially discharged from the storage chamber S. Therefore, if the outer container 4 is Even if the inner container 5 is slightly restored and deformed when recovering from the squeeze deformation, the filling seal by the contents in the storage chamber S (a state in which the contents act as a wall and prevent air from passing through) will prevent the communication hole 21 from passing through. It is possible to suppress outside air from entering inside the inner container 5. More specifically, when the contents are discharged by opening and closing the applicator plug 32, the check valve 31 is completely closed, so outside air does not enter the inner container 5, but when the squeeze operation is released, the outer container The inner container 5 may be slightly restored as if being pulled by the restoration of the container 4. If the check valve 31 is not completely seated when the inner container 5 is restored, there is a concern that air may be sucked in. In this application container 1, since the storage chamber S is filled with the contents, even if the contents are drawn into the inner container 5, the contents in the storage chamber S are not air. Therefore, air inflow into the inner container 5 can be suppressed.
Further, when the applicator plug 32 is located at the blocking position, an air discharge path A is provided between the seal portion 32b and the opening peripheral portion of the discharge hole 41 for discharging air from the storage chamber S to the outside via the discharge hole 41. It is formed. Therefore, when pressing the outer container 4 to fill the storage chamber S with contents, the air inside the storage chamber S is pushed out from between the seal portion 32b and the opening periphery of the discharge hole 41 to the outside of the container. be able to. As a result, while the communication between the storage chamber S and the discharge hole 41 is cut off, the storage chamber S is filled with the contents while pushing out the air inside the storage chamber S to the outside of the container, and the contents are filled and sealed. can be formed.

As described above, the application container 1 according to the first embodiment includes an inner container 5 in which the contents are stored and which is deformed to reduce the volume as the contents decrease, and the inner container 5 is installed inside, and there is a gap between the inner container 5 and the inner container 5. A container body 2 comprising an outer container 4 provided with an intake hole 6 for inhaling outside air, and an inner plug member attached to the mouth 2a of the container body 2 and having a communication hole 21 communicating with the inside of the container body 2. 20, a check valve 31 that is in close contact with the opening periphery of the communication hole 21 in the inner plug member 20 so as to be releasable upward, and a storage chamber S that communicates with the inside of the container body 2 through the communication hole 21. A discharge cylindrical member 40 is formed between the member 20 and the discharge hole 41 that communicates with the storage chamber S at the upper end thereof, and a discharge cylinder member 40 that is provided in the storage chamber S and whose upper end is connected from the discharge hole 41 to the storage chamber S. The applicator plug 32 is provided with a sealing part 32b that is in close contact with the opening periphery of the discharge hole 41 in the discharge cylinder member 40 so as to be releasable downward, and the applicator plug 32 is provided with a sealing part 32b that is in close contact with the opening periphery of the discharge hole 41 in the discharge cylinder member 40 so as to be able to separate from the discharge hole. 41 and the storage chamber S, and a coating position that is located below the blocking position and communicates the discharge hole 41 with the storage chamber S. When the stopper 32 is located in the blocking position, an air discharge path A is formed between the seal portion 32b and the opening periphery of the discharge hole 41 to discharge air from the storage chamber S to the outside via the discharge hole 41. There is. According to this configuration, it is possible to suppress outside air from flowing into the inner container 5.

Further, in the first embodiment, the air exhaust path A is formed by a textured surface provided on at least one of the seal portion 32b and the opening peripheral portion of the discharge hole 41 (the seal portion 32b in the first embodiment). According to this configuration, the fine unevenness of the textured surface makes it possible to form an air discharge path A through which the contents are difficult to pass and air can pass through.

Further, in the first embodiment, the air hole 42a is formed in the discharge cylinder member 40 to communicate the intake hole 6 with the outside, and the air hole 42a is closed so as to be openable from the intake hole 6 side of the discharge cylinder member 40. The check valve 31, the application plug 32, and the air valve 33 are integrally molded. According to this configuration, the check valve 31, the application plug 32, and the air valve 33 are integrally molded, so that the number of parts and assembly cost can be reduced.

(Second embodiment)
Next, a second embodiment of the present invention will be described. In the following description, the same or equivalent configurations as those in the above-described embodiment are given the same reference numerals, and the description thereof will be simplified or omitted.

As shown in FIG. 3, the second embodiment differs from the above embodiment in that the discharge cylinder member 40 and the application member 60 are integrally molded. The application member 60 shown in FIG. 3 is, for example, a brush member provided on the upper surface of the top wall of the discharge cylinder member 40. According to this configuration, since the discharge cylinder member 40 and the application member 60 are integrally molded, the number of parts and assembly cost can be reduced. Note that the annular protrusion 44 of the discharge cylinder member 40 of the second embodiment is undercut fitted to the fitting protrusion 15 of the upper cylinder part 12. A communication groove 44b extending in the vertical direction is formed on the outer peripheral surface of the annular protrusion 44 and communicates with the outside air introduction groove 15a.

Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. The embodiments and their modifications include, for example, those that can be easily imagined by those skilled in the art, those that are substantially the same, and those that are equivalent.

For example, in each of the above embodiments, the container body is a laminated peelable type container in which the inner container is releasably laminated on the inner surface of the outer container, but this is not a limitation. A double container with a gap between them may also be used.

Furthermore, in each of the above embodiments, the air valve 33 is not essential and may not be provided. In this case, for example, when the outer container 4 is squeeze-deformed by reducing the opening size of the outside air introduction groove 15a, the air hole 42a, or the intake hole 6, the air between the outer container 4 and the inner container 5 is , it may be configured so that it is difficult to leak to the outside.

Furthermore, for example, in each of the above embodiments, it has been explained that the air discharge path A is formed by a textured surface provided on at least one of the seal portion 32b and the opening peripheral portion of the discharge hole 41, but the air discharge path A is formed by a textured surface provided on at least one of the seal portion 32b and the opening peripheral portion of the discharge hole 41. However, it is not limited to the textured surface as long as the contents cannot be discharged. For example, the air discharge path A may be formed by a fine slit or the like extending radially around the opening of the discharge hole 41.

In addition, it is possible to appropriately replace the components in the embodiments with well-known components without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1... Application container, 2... Container main body, 2a... Mouth part, 2b... Body part, 2c... Bottom part, 3... Application cap, 4... Outer container, 5... Inner container, 6... Intake hole, 10... Mounting cylinder part, DESCRIPTION OF SYMBOLS 11...Lower cylinder part, 12...Upper cylinder part, 13...Step part, 14...Abutment rib, 15...Fitting protrusion, 15a...Outside air introduction groove, 20...Inner plug member, 21...Communication hole, 22...Base Part, 23...Snipped part, 23a...Slit, 24...Communication cylinder part, 25...Accommodating cylinder part, 26...Seal cylinder part, 30...Applying plug unit, 31...Check valve, 31a...Elastic arm, 32...Applying Plug, 32a...elastic support part, 32b...seal part, 33...air valve, 34...fitting cylinder part, 40...discharge cylinder member, 41...discharge hole, 42...flange part, 42a...air hole, 43...dent part , 44... Annular protrusion, 44a... Annular groove, 44b... Communication groove, 50... Lid, 51... Peripheral wall, 52... Top wall, 53... Cover cylinder, 60... Application member, A... Air discharge path, O1... Axis line , O2...axis, S...storage chamber

Claims (3)

An inner container that accommodates contents and is deformed to reduce its volume as the contents decrease, and an outer container in which the inner container is housed and provided with an intake hole for sucking outside air between the inner container and the inner container. A container body,
an inner plug member that is attached to the mouth of the container body and has a communication hole that communicates with the inside of the container body;
a check valve that is in close contact with the opening periphery of the communication hole in the inner plug member so that it can be separated upward;
a discharge cylindrical member having a storage chamber that communicates with the inside of the container body through the communication hole formed between the inner plug member and a discharge hole that communicates with the storage chamber at its upper end;
an application plug provided in the storage chamber and having an upper end protruding from the discharge hole to the outside of the storage chamber;
The applicator plug includes a seal portion that is in close contact with the opening peripheral edge of the discharge hole in the discharge cylinder member so as to be releasable downward, and has a blocking position that blocks communication between the discharge hole and the storage chamber. , provided so as to be movable up and down between an application position located below the blocking position and communicating the discharge hole and the storage chamber;
When the applicator stopper is located at the blocking position, an air discharge path is formed between the seal portion and the opening peripheral portion of the discharge hole for discharging air from the storage chamber to the outside through the discharge hole. The application container. The coating container according to claim 1, wherein the air discharge path is formed by a textured surface provided on at least one of the seal portion and the opening peripheral portion of the discharge hole. An air hole communicating between the intake hole and the outside is formed in the discharge cylinder member,
an air valve that closes the air hole so that it can be opened from the intake hole side of the discharge cylinder member;
The coating container according to claim 1 or 2, wherein the check valve, the coating stopper, and the air valve are integrally molded.

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