JP2004001829A - Dripping container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump mechanism capable of being incorporated even in a small container to provide an inexpensive dripping container which is combined with a delamination container, excellent in operationality, highly hygienic without ingress of the open air into a container body, and highly productive. <P>SOLUTION: The dripping container consists of the blow-molded container body including an outer layer and an inner layer peelable from the outer layer laminated on the internal surface of the outer layer and formed with an intake on the outer layer portion, and a pouring cylinder formed as a topped cylinder with a pouring port formed on the top and having a squeeze tube deformable by squeezing and restorably flexible at the approximately center height position with the lower end to be tightly fitted with the upper end of the container body for securing. While the container body and the pouring cylinder are combined, a fluid path reaching from the upper part of the container body to the pouring port at the downstream is formed. First and second check valves each located above and below the squeeze tube for opening/closing the fluid path are provided. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dripping container, and more particularly to a small dripping container such as an eye drop container capable of dispensing contents without allowing external air to enter the container.
[0002]
[Prior art]
For example, in containers that store medicines such as eye drops, many containers are used to pour out or drop a small amount by pressing the body of the container with your finger. Then, there was a problem that the body part elastically returned to the original shape, and as a result, external air entered the inside of the container, and foreign substances and germs existing in the air were mixed into the content liquid.
[0003]
As a method for solving such a problem, for example, Japanese Patent Laid-Open No. 4-297264 and Japanese Patent Laid-Open No. 6-14972 disclose a method in which a filter is provided in the discharge passage of the content liquid, -183047 describes a method for suppressing the entry of external air by allowing the container end to be folded into a flattened or flattened state so that the volume of the container decreases as the liquid content decreases. There is.
[0004]
Furthermore, as a method for preventing external air from entering, Japanese Patent Application Laid-Open No. 10-180853 comprises an outer layer and an inner layer that is detachably laminated on the outer layer. However, there is a description of a laminated container that introduces external air into the gap between the outer layer and the inner layer, usually a container called a delamination container.
[0005]
[Problems to be solved by the invention]
However, the method of attaching a filter in the discharge flow path has problems such as clogging of the filter or the propagation of various bacteria in the filter portion, and the method of flattening the end portion of Japanese Utility Model Laid-Open No. 63-183047 Mainly, for example, it is intended to apply what is used for a toothpaste tube and the like, and there are problems in convenience of use and appearance.
[0006]
In addition, the container disclosed in Japanese Patent Laid-Open No. 10-180853 is used, for example, by storing a shampoo or the like and attaching a dispenser pump to the mouth portion. Hiring has been practically difficult in terms of size and cost.
[0007]
The present invention was devised to solve the above-mentioned problems of the prior art, and the creation of a pump mechanism that can be realized even in a small container, particularly at a low cost, is a technical problem. It is an object of the present invention to provide a dripping container that is excellent in performance, has no hygroscopicity, and has high productivity and low ingress of outside air into the container body.
[0008]
[Means for Solving the Problems]
Of the present invention for solving the above technical problem, the means described in claim 1 is:
A blow molded container main body in which an inner layer that can be peeled off from the outer layer is laminated on the inner surface of the outer layer, and an intake portion is formed in the outer layer portion,
It has a cylindrical shape with a spout formed at the top, and has a squeezed cylindrical part that is squeezable and reversible at a substantially central height, and the lower end is tightly connected to the upper end of the container body. In a state where the container body and the extraction cylinder body are assembled, the flow passage extending from the upper part of the container body to the outlet on the downstream side is formed.
A dropping container having a configuration in which a first check valve portion and a second check valve portion that are located below and above the squeeze tube portion and open and close this flow passage are arranged.
[0009]
The dripping container having the above-described configuration according to claim 1 is a state in which the top cylindrical discharge pipe is tightly fitted to the upper part of the container main body, and the contents from the inside of the container main body to the outlet on the downstream side The flow passage is formed.
[0010]
In addition, there is a squeeze cylinder portion having a deformable and reversible flexibility at a substantially central height position of the dispensing cylinder body, and a reverse flow from the downstream side to the upstream side in the lower and upper portions, respectively. The first check valve portion and the second check valve portion having a function of blocking the squeeze tube portion, the first check valve portion and the second check valve portion are arranged in the container body. It is possible to construct a small-sized, lightweight, easy-to-mold and assembled and inexpensive pump that allows the contents to flow toward the spout.
[0011]
That is, when the squeeze tube is pressed with a fingertip and squeezed and deformed, the first check valve is closed, the second check valve is opened, and one of the contents previously in the portion between the check valves of the flow passage is opened. When the portion is poured out from the spout, the pressing is stopped and the pressing is released, the content is stopped from being poured out, and the squeeze tube portion is restored to its original shape by an elastic recovery force.
[0012]
When the squeeze cylinder is restored to its original shape by the elastic recovery force, the second check valve is closed, the first check valve is opened, and the contents in the container body are connected to both check of the flow passage. Sucked into the part between the valves.
[0013]
In addition, at this time, the function of the second check valve can prevent the backflow of the contents downstream and the entry of external air, and can prevent foreign matters such as germs or dust existing in the external air from entering the contents. Can be prevented.
[0014]
In addition, as the contents in the container body are sucked up by the part between the check valves of the flow passage, the inner layer of the container body undergoes volume reduction deformation while peeling from the outer layer, but from the intake part formed in the outer layer part to the outer layer Since external air enters the gap between the inner layer and the inner layer, the outer layer can be held in its original shape without being deformed, and air does not enter the inner layer. The pump function can be fully exerted until the ink is almost eliminated, and good dispensing operability can be maintained.
[0015]
Here, the pouring cylinder is made of, for example, a synthetic resin such as polyethylene, polypropylene, etc., and the shape and thickness of the pouring cylinder are set so that a part of the pouring cylinder can be deformed so as to be elastically recoverable. By setting, it is possible to easily manufacture a small product at a low cost.
[0016]
According to a second aspect of the present invention, in the first aspect of the invention, the lower end portion of the dispensing cylinder is tightly connected to the upper end portion of the container main body via a cylindrical outer tube that is tightly fitted to the mouth portion of the container main body. It is to make it the structure which is fitted and fixed to the assembly.
[0017]
According to the above configuration of claim 2, by closely fitting the extraction cylinder to the upper part of the container main body via the outer cylinder, the shape of the mouth of the container main body and the extraction cylinder can be simplified, The sealing property of the fitting portion can be reliably maintained.
[0018]
According to a third aspect of the present invention, in the second aspect of the present invention, the top plate is connected to the outer cylinder, the shaft extending in the vertical direction from the central portion is connected to the top plate, and the vicinity of the peripheral portion of the shaft. The first check valve portion opens and closes the flow passage between the lower portion of the shaft body and the inner peripheral surface of the mouth portion, and the second check valve portion is connected to the upper portion of the shaft body. The present invention is configured to open and close the flow passage between the inner peripheral surface of the outlet cylinder.
[0019]
According to the above configuration of the third aspect, the shaft body extending in the vertical direction is located in the center portion of the flow passage, and the flow passage is formed from the upper portion of the container body to the spout on the downstream side through the vertical through hole. However, by using this shaft body, the shaft body is used as the base end portion of the valve body, or the first check valve portion and the second check valve portion whose distal ends are in close contact with the shaft body are arranged. Each check valve portion can be easily set at an appropriate position, and its function can be reliably exhibited.
[0020]
According to a fourth aspect of the present invention, in the third aspect of the present invention, the lower portion of the shaft body is formed in a columnar shape, the first check valve portion is provided at the upper end, and an outer flange peripheral piece is provided at the upper end, and the mouth portion is provided with a tight A tapered tubular first valve body having a diameter reduced upward from a lower end of a cylindrical inscribed cylinder piece to be fitted and capable of being deformed outwardly so that the inner peripheral end closely contacts the lower portion of the shaft body. It is to make it a standing structure.
[0021]
In the configuration of the above-described fourth aspect, the inscribed cylinder piece is closely fitted into the mouth portion, and the first check valve portion is assembled and fixed to the container body. The inner peripheral end of the single valve body is in close contact with the lower portion of the cylindrical shaft body, and functions as a check valve that prevents backflow from the mouth into the container body.
[0022]
In addition, by inserting the inscribed cylinder piece into the mouth in a state where the lower surface of the outer peripheral peripheral piece is in contact with the upper end surface of the mouth of the container body, the first check can be easily performed even in a small container. The valve can be set at an appropriate position, and the function as a check valve can be sufficiently exhibited.
[0023]
According to a fifth aspect of the present invention, in the invention according to the third or fourth aspect, the second check valve portion is fixed to the upper end portion of the shaft body with a fitting assembly at the lower end portion, and the outer peripheral end is a dispensing cylinder. It is composed of a second tubular valve body having a tapered cylindrical shape, which is in close contact with the inner peripheral surface of the body and whose diameter is expanded upward so as to be able to be deformed inwardly.
[0024]
The above-mentioned configuration according to claim 5 is one in which a tapered cylindrical second valve body is fitted and fixed to the upper end portion of the shaft body, and the outer peripheral end thereof is closely contacted with the cylindrical extraction cylindrical body. Thus, even in a small container, the second check valve portion can be easily set at an appropriate position, and the function as a check valve can be sufficiently exhibited.
[0025]
According to a sixth aspect of the present invention, in the first, second, third, fourth, or fifth aspect of the invention, the intake portion is formed by removing a part of the outer layer of the mouth portion.
[0026]
According to the above configuration of the sixth aspect, since the intake portion is formed in the mouth portion, the function of the intake portion can be exhibited without impairing the appearance, and the strength of the container is not impaired.
[0027]
According to a seventh aspect of the present invention, in the first, second, third, fourth, or fifth aspect of the present invention, the air intake portion is formed by peeling a part of the outer layer and the inner layer of the tip portion of the pinch-off portion at the bottom of the container body. To do.
[0028]
The blow-molded pinch-off part of the bottom of the container body is formed by biting a two-layer laminated cylindrical parison formed of an outer layer and an inner layer with a split mold, and the tip of the pinch-off part is the inner layer. Since the outer layer and the inner layer are sandwiched from both sides, and the outer layer and the inner layer can be easily separated by applying an external force, the air intake portion can be easily formed without a step of removing the outer layer by post-processing.
[0029]
The means of the invention described in claim 8 is that, in the invention described in claim 1, 2, 3, 4, 5, 6 or 7, the contents are eye drops.
[0030]
Since it is possible to prevent foreign air such as germs or foreign substances from entering the container body, it is possible to provide a drop container for eye drops that is excellent in hygiene and safety.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 to 5 show an embodiment of a dropping container according to the present invention. The container main body 1, an inner plug body 21 in which a top plate 23 and a shaft body 24 are connected to an exterior cylinder 22, a dispensing cylinder 31, a first one. It is comprised from five members, the check valve part 41 and the 2nd check valve part 45, and each member is each formed from a synthetic resin.
[0032]
The container body 1 is obtained by blow-molding a two-layer laminated cylindrical parison formed of an outer layer 2 and an inner layer 3 in a split mold, and an outer layer 2 that forms an outer shell, and the outer layer 2 A short container 5 is formed on the trunk portion 7 via the shoulder portion 6. For example, by making the outer layer a polypropylene resin and the inner layer a nylon resin having low compatibility with the polypropylene resin, the peelability between the outer layer and the inner layer can be achieved.
[0033]
In the mouth portion 5 of the container main body 1, a pair of air intake holes 12 are formed by removing the outer layer 3 in a disk shape at a position symmetrical with respect to the central axis, and the effect of the air intake portion 11 is achieved. The surface is provided with a plurality of vertical grooves 5c into which vertical protrusions 22c attached to the inner surface of the outer cylinder 22 to be described later are fitted, and the lower end portion is engaged with the locking grooves 22a of the outer cylinder 22. A locking protrusion 5a to be stopped is provided around.
[0034]
The inner plug body 21 has a top cylindrical outer cylinder 22 that is externally fitted to the mouth portion 5 of the container body 1 and assembled and fixed. The top plate 23 of the outer cylinder 22 has a vertical direction from the center thereof. A cylindrical shaft body 24 is continuously provided, and eight vertical through-holes 26 are formed on the periphery of the shaft body 24 (see FIGS. 2 and 3). A fitting cylinder piece 27 having a circumference 27a is erected, and a stepped portion 24b for assembling and fixing a second check valve portion 45, which will be described later, is formed on the upper end portion of the shaft body 24 to form a locking projection piece 24a. Around.
[0035]
A locking groove 22a is formed on the lower end of the inner peripheral surface of the outer tube 22, a locking peripheral piece 22b is provided on the upper end, and a screw 22d is provided on the outer surface. A cover cylinder piece 28 is suspended from a portion whose diameter is increased downward in a tapered manner from the lower end.
[0036]
The dispensing cylinder 31 has a cylindrical shape, and a narrow cylindrical tip cylinder 36 in which a spout 33 is formed at the top is erected at the tip through a tapered portion 35 whose diameter is reduced upward. An outer fitting cylinder piece 34 having a locking end piece 34a on the inner peripheral surface of the lower end is suspended from the lower end portion via an outer flange piece.
[0037]
The outer fitting cylinder piece 34 is fitted in a state in which the locking end piece 34a is locked to the locking piece 27a, and the lower end surface of the outer fitting cylinder piece 34 is in contact with the upper peripheral edge of the top plate 23 of the inner plug body 21. The pipe piece 27 is tightly fitted onto the pipe piece 27, and the dispensing cylinder 31 is assembled and fixed to the inner plug body 21.
[0038]
Further, the squeeze cylinder part 32 extending from the upper end of the external fitting cylinder piece 34 to the lower end of the taper part 35 has a flexible structure that can be squeezed and restored by pressing.
[0039]
The squeezing property can be achieved by forming the dispensing cylinder 31 from a synthetic resin such as polyethylene, polypropylene, nylon, etc., and setting the wall thickness appropriately. The thickness of the tip tube 36 is increased from the taper portion 35 so that the deformation due to the pressing of the squeeze tube portion 32 does not reach upward.
[0040]
The first check valve body 41 is a tapered cylinder in which an outer flange peripheral piece 43a is provided at the upper end of a cylindrical inscribed cylinder piece 43, and the diameter is reduced upward from the lower end so as to allow a deformable outward deformation. In the state where the lower end surface of the outer flange piece 43a is in contact with the upper end surface of the mouth portion 5 and the inscribed cylinder piece 43 is closely fitted in the mouth portion 5, The body 1 is tightly assembled and fixed.
[0041]
The second check valve body 45 has an upwardly expanding diameter at the upper end of a top cylindrical fitting cylinder piece 47 having a locking groove 47a provided on the inner peripheral surface thereof so that it can be deformed inwardly. The tapered tubular second valve body 46 is erected, and the upper end portion of the shaft body 24 is fitted in a state in which the fitting cylinder piece 47 is externally fitted and the locking projection piece 24a is locked in the locking groove 47a. Assembled and fixed to.
[0042]
Here, the first check valve portion 41 and the second check valve portion 45 are formed of a soft synthetic resin or a rubber-like material in order to exhibit a function as a check valve. In the stop valve portion, the sealing performance with the mouth portion 5 is sufficiently secured.
[0043]
Next, details of the state in which the container body 1, the inner plug body 21, the dispensing cylinder 31, the first check valve portion 41, and the second check valve portion 45 are assembled as described above and one form of use state of the container are shown. explain.
[0044]
The first check valve portion 41 is fitted and fixed to the container body 1 with the inner cylinder piece 43 fitted into the mouth portion 5, and the outer collar peripheral piece 43 a in contact with the upper end surface of the mouth portion 5. The body 21 externally fits the outer cylinder 22 to the mouth portion 5 from above.
[0045]
At this time, the inner plug body 21 is assembled to the mouth portion 5 of the container body 1 so that it cannot be rotated and removed by the locking action of the vertical protrusions 22c and the vertical grooves 5c, and the locking grooves 22a and the locking protrusions 5a. The outer flange peripheral piece 43a is sandwiched between the upper end surface of the mouth portion 5 and the top plate 23, the position of the first check valve portion 41 is set accurately, and the first check valve portion 41 is flexible. Therefore, the sealing performance of the container is reliably achieved, and the outer peripheral end of the first valve body 42 is securely in close contact with the lower portion of the cylindrical shaft body 24, thereby acting as a check valve. The effect is surely demonstrated.
[0046]
The second check valve portion is accurately positioned in a state where the lower fitting cylinder piece 47 is fitted to the upper end portion of the shaft body 24 and assembled and fixed to the upper end portion of the shaft body 24. The outer peripheral end of the two-valve body 46 is in close contact with the distal end tube 36, so that the function and effect as a check valve is reliably exhibited.
[0047]
As described above, in the assembled state, the top cylindrical outer cylinder 22 is tightly fitted on the upper portion of the container body 1, and the dispensing cylinder 31 is tightly fitted on the upper end of the outer cylinder 22. The shaft 24 supported by the top plate 23 is located in the center part, and the flow of contents from the upper part of the container body 1 to the spout 33 on the downstream side through the upper and lower through holes 26. A passage 49 is formed.
[0048]
Further, a squeeze cylinder portion 32 is provided at a substantially central height position of the dispensing cylinder 31, and a first check valve portion having a function of preventing a reverse flow from the downstream side to the upstream side below and above thereof. 41 and the second check valve portion 45 are arranged. The squeeze cylinder 32, the first check valve portion 41 and the second check valve portion 45 allow the contents in the container body 1 to be supplied to the spout 33. The effect as a pump which makes it flow toward is exhibited.
[0049]
That is, when the squeeze tube portion 32 is pressed with a fingertip and deformed by squeeze (see FIG. 4), the first valve body 42 is closed, the second valve body 46 is opened, and a portion between the two valve bodies of the flow passage 49 is previously formed. A part of the content was poured out from the spout 33, the pressing was stopped, and when the pressing was released, the pouring of the content stopped and the squeeze tube 32 was restored to its original shape by an elastic recovery force. .
[0050]
Here, when the squeeze deformation is performed by pressing the fingertip, since the upper part of the shaft body 24 and the fitting cylinder piece 47 of the second check valve part 45 are located in the center part of the dispensing cylinder body 31, The entire extraction cylinder 31 can be held in a certain posture without being inclined.
[0051]
When the squeeze tube portion 32 is restored to its original shape, the second valve body 46 is closed, the first valve body 42 is opened, and the contents in the container body 1 are transferred between the two valve bodies of the flow passage 49. Sucked into the part.
[0052]
Further, at this time, the function of the second check valve portion 41 can prevent the backflow of contents downstream and the entry of external air, so that foreign matter such as germs or dust existing in the external air can be contained in the container. Mixing into the contents can be prevented.
[0053]
Further, as the contents in the container body 1 are sucked up by the portion between the two valve bodies of the flow passage 49, the inner layer 3 of the container body 1 is deformed while being peeled from the outer layer 2 (see FIG. 2). Since external air enters the gap 4 between the outer layer 2 and the inner layer 3 from the intake hole 12 formed in the outer layer 2 portion, the outer layer 2 can be held in its original shape without being deformed, and the inner layer 3 can be retained. Since air does not enter the container, the function of the pump is sufficiently exerted until the contents of the container body 1 are almost eliminated, and good operability can be ensured.
[0054]
Normally, when the dripping container of this embodiment is not used, the overcap 51 is screwed and assembled to the exterior body 22 as shown in FIG.
[0055]
In the above-described embodiment of the present invention, the example in which the intake portion 11 is formed in the mouth portion 5 is shown. However, the formation of the intake portion 11 is not limited to the mouth portion 5, and FIG. 11 shows another example.
[0056]
The blow-molded pinch-off portion 13 of the bottom portion 8 of the container body 1 is formed by biting out a two-layer laminated cylindrical parison formed by the outer layer 2 and the inner layer 3 with a split mold (see FIG. 6 (a)), the tip of the inner layer 3 is sandwiched between the outer layer 2 from both sides, and the outer layer 2 and the inner layer 3 can be separated by applying an external force to form the intake portion 11 (FIG. 6). (See (b)).
[0057]
The air intake portion 11 can be easily formed without the step of removing the outer layer 3 by post-processing, and particularly in a small container, the force applied to the pinch-off portion 13 of the bottom portion 8 is relatively small so that there is no fear of breakage and an effective method. It is.
[0058]
In the above-described embodiment of the present invention, the first check valve portion 41 and the second check valve portion 45 are provided using the shaft body 24. The configuration of both check valve portions is as follows. The present invention is not limited to one embodiment, and any squeeze cylinder portion 32 may be used as long as it functions as a pump. FIG. 7 shows another example of both check valve portions.
[0059]
The first check valve portion 41 is assembled and fixed to the fitting tube piece 27 of the outer tube 22 and opens and closes the opening 26a formed in the center portion of the top plate 23. The second check valve portion 45 is a note. The top cylinder 36 is tightly assembled and fixed inside the front end cylinder 36 of the outlet cylinder 31, and a cross-shaped slit valve 48 that functions as a valve body is formed at the front end.
[0060]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained.
In the first aspect of the invention, a squeeze cylinder and two check valves can form a small, lightweight pumping function that is easy to mold and assemble, and a container body from which an outer layer and an inner layer can be peeled, By combining, it became possible to provide a particularly small drop container that is hygienic and excellent in that no external air enters the container body without impairing the dispensing operability by pressing.
[0061]
In the invention according to claim 2, the shape of the mouth part of the container body and the extraction cylinder can be simplified by closely fitting the extraction cylinder to the upper part of the container body via the exterior cylinder. At the same time, the sealing performance of the fitting portion can be reliably maintained.
[0062]
In the invention described in claim 3, by arranging the first check valve portion and the second check valve portion using the shaft body, each check valve portion can be easily set at an appropriate position. The function can be surely exhibited.
[0063]
In the invention according to claim 4, the first check valve portion is assembled and fixed to the mouth portion of the container body, and the valve body can be easily set at an appropriate position even in a small container. The function as a valve can be exhibited sufficiently.
[0064]
In the invention according to claim 5, the tapered tubular second valve body is fitted and fixed to the upper end portion of the shaft body, and the outer peripheral end thereof is closely connected to the cylindrical dispensing cylinder body. Even in a small container, the valve body can be easily set at an appropriate position, and the function as a check valve can be sufficiently exhibited.
[0065]
In the invention described in claim 6, since the intake portion is formed in the mouth portion, the function of the intake portion can be exhibited without impairing the appearance, and the strength of the container is not impaired.
[0066]
In the seventh aspect of the invention, the outer layer and the inner layer of the pinch-off portion can be easily peeled off, so that the air intake portion can be easily formed without a step of removing the outer layer by post-processing.
[0067]
The invention according to claim 8 provides a dripping container for eye drops that is excellent in hygiene and safety because foreign matters such as external air germs or dust can be prevented from entering the container body. can do.
[Brief description of the drawings]
FIG. 1 is a half longitudinal front view showing a state in which an overcap is placed on an embodiment of a dropping container of the present invention.
FIG. 2 is a longitudinal front view showing an enlarged main part of the portion shown in the longitudinal sectional view of FIG. 1;
FIG. 3 is a plan view of a middle plug body of an embodiment of the dropping container of the present invention.
FIG. 4 is a partial perspective view showing a usage state of an embodiment of the dropping container of the present invention.
FIG. 5 is a longitudinal sectional view of the vicinity of the bottom of the container body of one embodiment of the dropping container of the present invention.
6 is an explanatory view showing another example of the intake section by enlarging the pinch-off section in FIG. 5; FIG.
7 is a longitudinal front view showing another example of the first check valve portion and the second check valve portion in FIG. 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1; Container body 2; Outer layer 3; Inner layer 4; Gap 5; Mouth part 5a; Locking protrusion 5b; Locking step part 5c; Longitudinal groove 6; Shoulder part 7; Body part 8; Intake hole 13; pinch-off portion 21; inner plug 22; exterior tube 22a; locking groove 22b; locking circumferential piece 22c; vertical protrusion 22d; screw 23; top plate 24; shaft 24a; Step part 26; Upper and lower through-holes 26a; Opening part 27; Insertion cylinder piece 27a; Locking piece 28; Cover cylinder piece 31; Outlet cylinder body 32; Squeeze cylinder part 33; Locking end piece 35; Taper portion 36; Tip tube 41; First check valve portion 42; First valve body 43; Inscribed tube piece 43a; Outer peripheral piece 44; Flange peripheral piece 45; Part 46; second valve element 47; fitting cylinder piece 47a; locking groove 48; Valve 49; flow passage 51; overcap

Claims (8)

A blow molded container main body (1) having an inner layer (3) peelable from the outer layer (2) on the inner surface of the outer layer (2), and an air inlet (11) formed in the outer layer (2) portion; And a squeezed cylindrical portion (32) having a flexible shape that is squeezable and reversible at a substantially central height, and has a lower end at the container. In a state where the container main body (1) and the extraction cylinder (31) are assembled, the extraction cylinder (31) which is closely fitted and fixed to the upper end of the main body (1) and assembled, A flow passageway (49) is formed from the upper part of the container body (1) to the spout (33) on the downstream side, and is located below and above the squeeze tube portion (32), and the flow passageway (49). The first check valve part (41) and the second check valve part (45) are arranged to open and close Vessel. The lower end portion of the extraction cylinder (31) is tightly connected to the upper end portion of the container body (1) through a cylindrical outer tube (22) that is tightly fitted to the mouth portion (5) of the container body (1). The dripping container according to claim 1, wherein the container is configured to be fitted and fixed together. A top plate (23) is connected to the outer cylinder (22), and a shaft body (24) extending in the vertical direction from the center is connected to the top plate (23). A through hole (26) is formed, and the first check valve portion (41) opens and closes the flow passageway (49) between the lower portion of the shaft body (24) and the inner peripheral surface of the mouth portion (5), The second check valve portion (45) is configured to open and close the flow passage (49) between the upper portion of the shaft body (24) and the inner peripheral surface of the extraction cylinder (31). The dripping container as described. The lower part of the shaft body (24) has a columnar shape, the first check valve part (41), the outer flange peripheral piece (43a) at the upper end, and the cylindrical inner part that fits closely into the mouth part (5) A tapered tubular first valve body whose diameter is reduced upward and whose inner peripheral end is in close contact with the lower portion of the shaft body (24) so as to allow a deformable outward deformation from the lower end of the contact piece (43). 42) The dropping container according to claim 3, wherein 42) is erected. The second check valve part (45) has a lower end part fixed to the upper end part of the shaft body (24) with a fitting assembly, and an outer peripheral end is in close contact with the inner peripheral surface of the extraction cylinder (31). The dripping container of Claim 3 or 4 comprised from the 2nd valve body (46) of the taper cylinder which expanded the diameter upwards so that a deformation | transformation to free inner side was possible. The dripping container according to claim 1, 2, 3, 4 or 5, wherein the suction part (11) is formed by removing a part of the outer layer (2) of the mouth part (5). The air intake portion (11) is formed by partially peeling the outer layer (2) and the inner layer (3) at the tip of the pinch-off portion (13) of the bottom portion (8) of the container body (1). The dripping container according to 3, 4 or 5. The dripping container according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the contents are eye drops.

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