JP2003321074A - Feeding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feeding container which does not permit penetration inside of the open air and is hygienically excellent while a high productivity is kept. <P>SOLUTION: A container body comprises a flexible outer layer which is squeege-deformable and freely restored to its original shape, an inner layer which is laminated on the inner face of the outer layer and is releasable from the outer layer and freely volume-reduced and deformable, and a slit formed in the longitudinal direction on a mold pinch-off part of a cylindrical opening part as an air suction part. A cap body is externally inserted on the top of the container main body, under a condition where the inner peripheral face of the bottom end is brought into hermetical contact with the container body on its periphery and has a cylindrical sheath cylinder on which a through-hole for taking the open air in is formed; a top board for covering the opening part of a mouth continuously provided on the top end of the sheath cylinder; and a bung hole formed on the central part of the top board. The first check valve for opening and closing the bung hole so as to make a back-flow of the content and an inflow of the open air into the container impossible is assembled and fixed on the top board, and the second check valve for opening and closing the through-hole is assembled and fixed on the sheath cylinder. Under a condition where the container body and the cap are assembled, the through-hole and the air suction part are communicated through the second check valve under a sealed condition. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pour-out container, and more particularly to a pour-out container such as an eye drop container capable of pouring out the contents without letting outside air into the container.

[0002]

2. Description of the Related Art For example, in a container for storing a medicine such as eye drops, a container for pouring out by pressing a body of the container is often used. However, when the pressed state is released after pouring, There is a problem that the body part elastically returns to its original shape, and as a result, the outside air enters the inside of the container, and foreign matter and miscellaneous bacteria existing in the air are mixed into the content liquid.

As a method for solving such a problem, for example, Japanese Patent Application Laid-Open Nos. 4-297264 and 6-
No. 14972, a method of attaching a filter in the discharge flow path of the content liquid, and in Japanese Utility Model Laid-Open No. 63-183047, the container is made foldable into a flattened shape or a flat state, There is a description of a method of suppressing the ingress of external air by reducing the volume of the liquid as the content liquid decreases.

Further, as a method for preventing outside air from entering, Japanese Patent Laid-Open No. 10-180853 discloses an outer layer and an inner layer releasably laminated on the outer layer, and the inner layer is peeled from the outer layer as the content is reduced. There is a description of a laminated container that is deflated and deformed, and external air is introduced into the gap between the outer layer and the inner layer.

[0005]

However, the method of providing a filter in the discharge passage has a problem that the filter is clogged or various bacteria are propagated in the filter portion, and the method disclosed in Japanese Utility Model Laid-Open No. 63-183047 is used. The method of flattening the distal end is mainly intended to be applied to, for example, a toothpaste tube or the like, and has problems in convenience in use and appearance.

The container of Japanese Patent Laid-Open No. 10-180853 is used, for example, to store shampoo and the like and to attach a dispenser pump to the mouth, and to dispense eye drops without using a pump or the like. It is necessary to pour out by pressing the body.

Therefore, in order to use a peelable laminated container as a pouring container, the contents can be poured out at the pouring port of the container, and the function of preventing the invasion of external air is required. 1 non-return valve, a second check valve that has a function of allowing the outside air to enter the gap between the outer layer and the inner layer, and has a function of disabling outflow, and a second check valve for allowing the outside air to enter the gap between the outer layer and the inner layer It requires an air intake part, but especially for small injection containers such as eye drops while maintaining high productivity,
It was difficult to attach and it was difficult to realize.

The present invention was devised in order to solve the above-mentioned problems of the prior art, and in particular, a check valve mechanism and an intake portion which can be realized even in a small container while maintaining high productivity are provided. It is an object of the present invention to provide a pouring container that has high productivity, does not enter outside air into the container, and is excellent in hygiene.

[0009]

[Means for Solving the Problems] In the present invention for solving the above technical problems, the means according to claim 1 is characterized in that an inner surface of an outer layer having a squeeze deformable and recoverable flexibility,
It has a container body which is made by laminating an inner layer which can be peeled off from this outer layer and which can be deformed to reduce its volume, and which has a slit formed in the longitudinal direction in the die cutting part of the cylindrical mouth part as an air intake part, the lower end part With the inner peripheral surface of the container in close contact with the container body, it has a cylindrical outer cylinder fitted over the upper part of the container body and having a through hole for taking in outside air. A top plate that covers the opening of the mouth is connected in series, and a cap body with a spout is formed in the center of the top plate. In a state in which the first check valve portion for opening and closing the spout is fixedly assembled and fixed, and the second check valve portion for opening and closing the through hole is fixedly assembled and fixed to the outer cylinder, and the container body and the cap are assembled. The through-hole and the intake portion are connected in a sealed state via the second check valve. .

In the above structure according to claim 1, when the container body and the cap body are assembled and fixed, and the inner peripheral surface of the lower end portion of the outer cylinder is in close contact with the container body, the mouth of the container body is closed. By the action of the second check valve in the part where the vertical slit formed in the die cutting part of the part, air can enter the gap between the outer layer and the inner layer, and from the gap to the outside of the container body. Is prevented from flowing out, and the upper and lower through holes and the intake portion are connected in a sealed state.

Here, the die cutting portion is a portion where the parison before blow molding is partly sandwiched from both sides with a split die which is a blow molding die, and part of the portion formed at the mouth of the container body. However, in the state where the inner layer is stacked, the laminate of the outer layer and the inner layer is squeezed while being squeezed, so the cut end face is a sandwich shape in which the inner layer is sandwiched between the outer layers on both sides, and the outer layer and the inner layer are separated. However, it is possible to easily form an air intake portion (slit) for introducing outside air into the gap between the outer layer and the inner layer by separating them.

After the contents are poured out by pressing the body of the container body, the pressing is stopped, and when the pressing is released, the contents are stopped from being poured out and the outer layer is restored to its original shape by the elastic recovery force. To begin with, the function of the first check valve part assembled and fixed to the top plate part can prevent the backflow of the contents into the container main body and the invasion of the outside air.

At this time, since the inner layer is kept in the volume-deformed state, the outside air is introduced from the through hole formed in the outer cylinder, and the intake section of the mouth section is introduced through the second check valve section. To enter the gap between the outer layer and the inner layer, and as a result, the outer layer is restored to its original shape while the inner layer remains in the volume-deformed shape.

When the outer layer is restored to its original shape and is pressed again for pouring out the contents, the check function of the second check valve blocks the communication between the through hole and the intake section. As a result, pressure is applied to the contents, and the contents are poured out of the container main body through the pouring outlet by opening the first check valve.

As described above, the outside air is allowed to enter the gap between the outer layer and the inner layer without entering the inside of the container body, so that the contents are not exposed to the outside air.
It is possible to provide a container that does not impair the pouring operability due to pressing.

Here, the slit serving as an air intake portion for introducing the outside air into the gap between the outer layer and the inner layer is located at one portion of the laminated cylindrical parison made of the outer layer and the inner layer and formed in the mouth portion. It is formed in the mold cutting portion so as to be sandwiched by the split molds in the vertical direction, and it is possible to keep the manufacturing cost low without the need for post-processing.

Such an air intake portion can be formed by blow-molding the container body and then removing the outer layer portion of the mouth portion into, for example, a disk shape or a slit shape by post-processing, but especially in a small container. In order to remove only the outer layer in this way, it is necessary to perform processing with high accuracy, which requires a long processing time and increases the manufacturing cost.

According to a second aspect of the present invention, in the first aspect of the invention, the first check valve portion is a slit valve body made of a soft resin and having a top and a slit valve piece formed on the top. It is in what I did.

The structure according to claim 2 relates to the first check valve portion, and the first check valve portion can be easily molded by the simple structure in which the slit valve piece is formed on the top portion. In addition to being possible, the incorporation into the container can be easily achieved.

According to a third aspect of the present invention, in the invention according to the first or second aspect, the outer cylinder is provided with a cylindrical lower cylinder piece whose lower end portion is tightly fitted to a shoulder portion of the container body, and a mouth portion. The upper cylinder piece to be fitted externally is continuously connected via an inner collar-shaped shoulder piece, a through hole is formed in the upper part of the lower cylinder piece, and the second check valve portion is assembled and fixed inside the upper cylinder piece. The top plate is connected to the upper end of the piece.

In the above structure according to claim 3, the outer cylinder is formed by a lower cylinder piece and an upper cylinder piece, the lower end portion of the lower cylinder piece is tightly fitted onto the shoulder portion of the container body, and the upper cylinder piece is the mouth. It is configured to be externally fitted to the portion, so that the assembling and fixing of the cap body to the container body can be strengthened and the required sealability can be more surely maintained.

According to a fourth aspect of the present invention, in the invention according to the third aspect, a cylindrical hanging cylinder piece is hung from the lower surface of the shoulder piece, and the second check valve is a cylindrical outer fitting cylinder piece. The inner flanged peripheral piece of the inner flange is continuously connected to the lower end of the, and the tapered cylindrical second valve body whose diameter is expanded downward so that it can be deformed from the upper end to the inwardly recoverable state is hung downwardly and externally fitted. In a state where the tubular piece is tightly fitted on the hanging tubular piece, and the outer peripheral end of the second valve body is in close contact with the inner peripheral surface of the lower tubular piece,
The second check valve portion is assembled and fixed to the outer cylinder.

The above-mentioned structure according to claim 4 is mainly the second aspect.
It is related to the structure of the check valve part and the assembling and fixing method thereof, and the external fitting cylinder piece is externally fitted to the hanging cylinder piece to fix the second check valve part in the exterior cylinder in an assembled manner. The second check valve can be easily set to an appropriate position even in the case of the above-mentioned container, and in this assembled state, the outer peripheral end of the taper cylinder-shaped second valve body makes a close circumferential contact with the inner peripheral surface of the outer cylinder, Can be fully exerted.

The means of the invention according to claim 5 is the method according to claim 1,
In the invention described in 2, 3, or 4, there is a case that the content is an eye drop.

[0025] With the above-mentioned structure of the present invention, it is possible to prevent foreign matter such as germs or dust from the outside air from entering the container body. Therefore, a dispensing container for eye drops excellent in hygiene and safety. Can be provided.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of a pouring container of the present invention, which is composed of a container body 1, a cap body 11, a first check valve portion 31, and a second check valve portion 35.

The container body 1 is squeeze-deformable by pressing, and is blow-molded with an outer layer 2 having flexibility that can be restored and a volume-deformable inner layer 3 that is releasably laminated on the outer layer 2. Although it is a laminated container, this releasability can be achieved by using resins having low mutual compatibility, for example, by forming the outer layer 2 from a polypropylene resin and the inner layer 3 from a nylon resin.

The container body 1 has a locking projection 8 on the body 7.
A short cylindrical mouth portion 4 is formed through a shoulder portion 8 which surrounds a, and an inlet of outside air into a gap 6 between the outer layer 2 and the inner layer 3 in the longitudinal direction at one location of the mouth portion 4. A slit 10 that functions as the intake portion 5 is formed (see FIGS. 2, 3, and 4).
Further, a plurality of vertical grooves 4a into which a vertical protrusion 14a attached to the inner surface of the upper cylinder piece 14 described later is fitted are formed on the outer peripheral surface of the upper end portion. (See Figure 2)

Here, the slit 10 is a die cutting portion 44.
The mold cutting portion 44 is formed by sandwiching a part of a portion of the parison 44 before blow molding formed in the mouth 4 of the container body 1 from both sides with a split mold 45 which is a blow molding die. Although it is a part to be cut off, with the inner layer 3 stacked,
Since the laminate of the outer layer 2 and the inner layer 3 is squeezed while being crushed (see FIG. 7), the cut end face of the inner layer 3 is the outer layer 2 on both sides.
It is sandwiched between (see FIG. 4 (a)), and the outer layer 2 and the inner layer 3 are separated and separated from each other to introduce the outside air into the gap 6 between the outer layer 2 and the inner layer 3.
It is possible to easily form the slit 10 that fulfills the above function (see FIG. 4B).

The outer cylinder 12 of the cap body 11 has a lower cylinder 13 whose lower end is tightly fitted on the shoulder 5 and an upper cylinder 14 which is fitted on the mouth 4 while forming a gap therebetween via a shoulder 15. The top plate portion 21 is connected to the upper end of the upper cylinder piece 14 so as to cover the opening of the mouth portion 4. The top plate portion 21 is connected to the upper end of the upper cylinder piece 14. A top plate 21a provided and a tip tube piece 23 having a pouring tip port 23a at the top portion standing upright on the periphery of a spout 22 formed at the center of the top plate 21a.
And the seal tube piece 24 is hung down.

At the end of the shoulder piece 15, a hanging cylinder piece 16 is provided so as to extend downwardly from the upper cylinder piece 14. The upper cylinder piece 14 has an opening 4 at the upper part of the inner peripheral surface thereof. A vertical ridge 14a that fits into the vertical groove 4a is provided, a through hole 18 is formed near the upper end of the inner peripheral surface of the lower tubular piece 13, and a shoulder 8 of the container body 1 surrounds the lower end. A seal circumferential strip 13a is provided around the provided locking projection 8a to be in a sealed state.

The cap body 11 is constructed as described above, and the sealing peripheral strip 13a of the lower tubular piece 13 is locked to the locking projection 8a of the shoulder 8 while maintaining the sealing property, and The vertical protrusion 14a is fitted in the vertical groove 4a of the mouth portion 4, and the top plate 21
With the lower surface of a contacting the upper end surface of the mouth portion 4 and the seal tube piece 24 being tightly fitted in the upper end portion of the mouth portion 4, the container body 1 cannot be rotated and cannot be pulled out to the upper portion. It is firmly assembled and fixed, and the slit 10 (intake portion 5) and the through hole 18 are communicated in a sealed state.

The first check valve portion 31 is formed by forming a cross-shaped slit valve piece 32a on the top of a slit-shaped valve body 32 having a top (see FIG. 5). It is tightly fitted into the piece 23 from below, and is assembled and fixed to the top plate portion 21 in a state where the lower end is locked to the locking piece 24a of the seal tube piece 24.

The second check valve portion 35 is a cylindrical outer fitting cylinder piece 3.
An inner flanged peripheral piece 37 having an inner flange is continuously provided at the lower end of 6, and a tapered cylindrical second valve body 35a is hung downwardly so as to be deformable from the upper end to an inwardly recoverable inner side. Yes, by tightly fitting the hanging cylinder piece 16 from below, the second valve body 35
With the outer peripheral end of a closely contacting the inner peripheral surface of the lower tubular piece 13,
It is assembled and fixed to the outer casing 12.

Here, the first check valve portion 31 and the second check valve portion 35 function as check valves, and at the same time, sufficiently seal the tip cylinder piece 23 or the hanging cylinder piece 16 and the like. Therefore, it is made of soft synthetic resin.

Next, the container body 1 and the cap body 1 described above
In assembling the first check valve portion 31, the first check valve portion 31, and the second check valve portion 35, first, the slit valve body 32 is fitted into the tip tubular piece 23,
Further, by tightly fitting the outer fitting cylinder piece 36 onto the hanging cylinder piece 16, the first check valve portion 31 and the second check valve portion 35 are assembled and fixed to the cap body 11, and the cap body 11 is attached to the container. It is fixed to the main body 1 with an external fitting assembly.

Normally, when the dispensing container of the present embodiment is not used, as shown in FIG.
Is attached to the upper tube piece 14 by screwing, and stored.

When the body portion 7 of the container body 1 is pressed from the assembled state described above, the slit valve piece 32a of the first check valve portion 31 is pushed upward and opened, and the contents are poured into the pouring tip end opening 23a. From the outside.

When the pressure is released from the above-mentioned pouring state, pouring of the contents stops, the outer layer 2 begins to restore to its original shape by the elastic recovery force, and the slit valve piece 32a closes to serve as a check valve. It is possible to prevent the backflow of the contents into the container body 1 and the invasion of the outside air.

At this time, since the inner layer 3 is still in the volume-deformed state, the outside air is introduced from the through hole 18 and the second valve body 35a is deformed inward, while the slit 10 (intake air It is introduced into the gap 6 between the outer shell layer 2 and the inner layer 3 from the portion 5), and as a result, the inner layer 3 remains in the volume-deformed shape and the outer layer 2 is restored to its original shape.

When the outer layer 2 is restored to its original shape and is pressed again for pouring out the contents, the through hole 18 and the slit 10 are provided by the check function of the second check valve portion 35.
Since the connection with the (intake part 5) is cut off, the air in the gap 6 between the outer layer 2 and the inner layer 3 in the container body 1 is sealed, pressure is applied to the contents, and the contents are slit valve pieces 32a. It is poured out from the pouring tip opening 23a.

[0042]

Since the present invention has the above-mentioned structure, it has the following effects. According to the first aspect of the present invention, it is possible to provide a hygienic pouring container without impairing the pouring operability by pressing and preventing external air from entering the container body.

By forming the air intake portion, which is difficult for a small container, by the die cutting portion of the mouth portion, the manufacturing cost can be kept low without the need for post-processing, and the appearance can be maintained. A container can be provided.

According to the second aspect of the invention, since the slit valve piece is formed on the top portion of the simple structure, the first check valve portion can be easily molded, and the small check container can be used. However, the positioning and the incorporation into the container can be easily achieved.

According to the third aspect of the invention, by forming the outer cylinder from the lower cylinder piece and the upper cylinder piece, the cap body can be firmly assembled and fixed to the container body, and is required. The sealing property can be maintained more reliably.

According to the fourth aspect of the present invention, the second check valve can be easily set to an appropriate position even in a small container, and the second check valve can be easily incorporated into the container. It can be fully demonstrated.

According to the invention of claim 5, since it is possible to prevent foreign matter such as germs or dust from the outside air from entering the container body, the injection for eye drops is excellent in hygiene and safety. A dispensing container can be provided.

[Brief description of drawings]

FIG. 1 is a semi-longitudinal side view showing an embodiment of a pouring container of the present invention.

FIG. 2 is a perspective view showing a container body of an embodiment of the pouring container of the present invention.

FIG. 3 is a plan sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged plan sectional view of an essential part showing a slit (intake part) in FIG.

FIG. 5 is a perspective view showing a first check valve portion of an embodiment of the pouring container of the present invention.

FIG. 6 is a semi-longitudinal sectional side view showing an embodiment of a pouring container of the present invention with an overcap covering.

FIG. 7 is an explanatory view showing, in a plan sectional view, a state in which a die cutting portion of a mouth portion is formed in blow molding of a container body of an embodiment of a pouring container of the present invention.

[Explanation of symbols]

1; Container body 2; outer layer 3; Inner layer 4; Mouth 4a; vertical groove 5; Air intake 6; Gap 7; torso 8; Shoulder 8a; locking ridge 10; Slit 11; Cap body 12; Exterior cylinder 13; Lower tube piece 13a; Seal peripheral strip 14; Upper tube piece 14a; Vertical ridge 15; Shoulder 16; Hanging tube piece 18; Through hole 21; Top plate part 21a; Top plate 22 ； Spout 23; Tip tube piece 23a; Discharge tip port 24; Seal tube piece 24a; locking piece 31; First check valve section 32; Slit valve body 32a; slit valve piece 35; Second check valve part 35a; second valve body 36; External fitting tube piece 37; Inner flange piece 41; Overcap 44; Parison 45; Split mold 46; Die cutting part

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3E014 PB03 PC04 PC06 PD15 PE09                       PE30 PF06                 3E084 AA04 AA12 AA24 AA26 AB01                       AB05 BA03 CA01 CB02 DA01                       DB12 DB13 FA09 FB01 FC07                       FC09 GA01 GA08 GB01 GB12                       KA05 LA17 LB02 LB07 LC01                       LD13 LD16

Claims (5)

[Claims] 1. A squeeze-deformable and reversible flexible outer layer (2) is laminated with an inner layer (3) peelable from the outer layer (2) and deformable in volume, A container body (1) having a slit (10) vertically formed in a die cutting portion of a cylindrical mouth portion (4) as an intake portion (5), and an inner peripheral surface of a lower end portion of the container body. In the state of being in close contact with (1), it has a cylindrical outer cylinder (12) which is fitted onto the upper part of the container body (1) and has a through hole (18) for taking in outside air. , A top plate portion (21) covering the opening of the mouth portion (4) is continuously provided at the upper end of the outer casing (12),
Cap body (11) with a spout (22) formed in the center of (21)
And a first check valve part (31) for assembling and fixing the top plate part (21) to open and close the spout (22) so as to prevent backflow of contents into the container body (1) and inflow of outside air. Then, the second check valve portion (35) for opening and closing the through hole (18) is assembled and fixed to the outer casing (12), and the container body (1) and the cap body (11) are assembled. The through hole (18) and the intake section (5) are connected to the second check valve (35).
A pouring container configured to be communicated in a sealed state via a. 2. The slit valve body (32) made of a soft resin having a top and having a slit valve piece (32a) formed at the top, the first check valve portion (31) according to claim 1. A dispensing container. 3. A cylindrical lower cylinder piece (13) whose lower end is tightly fitted to a shoulder portion (8) of a container body (1) and an outer cylinder (12) is fitted to a mouth portion (4). An upper tubular piece (14) and an inner collar-shaped shoulder piece (15) are connected to each other, and a through hole (18) is formed in an upper portion of the lower tubular piece (13).
The second check valve part (35) is assembled and fixed inside, and the upper cylinder piece (1
The pouring container according to claim 1 or 2, wherein a top plate portion (21) is connected to the upper end of (4). 4. A cylindrical hanging tubular piece (1) from the lower surface of the shoulder piece (15).
6) is hung down, and the second check valve portion (35) is provided with a cylindrical outer fitting tube piece (3
6) The inner flanged peripheral piece (37) in the form of an inner collar is connected to the lower end of 6), and the tapered cylindrical second valve body (35a) whose diameter is expanded downward so that it can be deformed inwardly from the upper end It is configured to hang down, and the outer fitting cylinder piece (36) is tightly fitted on the hanging cylinder piece (16) to form a second valve body (35).
With the outer peripheral edge of a) in close contact with the inner peripheral surface of the lower cylinder piece (13),
The second check valve part (35) is assembled and fixed to the exterior cylinder (12),
The pouring container according to claim 3. 5. The method according to any one of claims 1, 2 and 3, wherein the content is eye drops.
Or the dispensing container described in 4.