JP2008114879A - Cap with inner stopper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cap with the inner stopper, the cap being designed so that a slit for washing can be formed in the highest possible part of the skirt wall, thereby improving washing effect, a leakage of liquid contents can be prevented, and a tamper evident mechanism is securely prevented from being tampered. <P>SOLUTION: The cap includes an inner stopper 4 fitted and fixed in the mouth 3 of a container 2, and a cap body 5 covering the inner stopper 4. The skirt wall 10 of the cap body 5 located higher than the female thread 11 of the cap body 5 and also lower than the underside of the peripheral edge 7 of the top plate 6 of the inner stopper 4 when the cap is closed is defined as a slit formation area 15. The inside diameter R1 of this area 15 is greater than the inside diameter R2 of the skirt wall 10. The outside diameter R3 of the top plate 6 of the inner stopper 4 is greater than the inner diameter R4 of the female thread 11 and smaller than the inside diameter R2 of the skirt wall 10. This improves washability, prevents a leakage of the liquid contents, and ensures the liquid contents from being tampered with. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cap with an inner stopper to be attached to the mouth of a container filled with liquid contents such as teas and fruit juice beverages, and more specifically, an inner stopper fitted and fixed to the mouth of the container, A cap body consisting of a top wall covering the top wall and a skirt wall hanging from the periphery of the top wall, and a tamper evidence mechanism connected to the lower end of the cap body via a breakable bridge. The present invention relates to a cap with an inner stopper in which a slit is formed and the tamper evidence mechanism can reliably prevent mischief and has a high cleaning property.

After filling the container with liquids such as teas and fruit juices, the cap with a tamper-evidence mechanism can be screwed into the mouth of the container to prevent tampering once it has been opened. Has been done. In this case, when the content liquid is filled, the content liquid adheres around the container mouth part, but it is difficult to prevent it during filling process control, so after fitting the cap with the inner cap to the container mouth part, The cleaning solution is ejected from the outside to perform cleaning and removal. The following are known as such caps with inner plugs.
Japanese Patent Application No. 2006-160301

  As shown in FIG. 8, the cap with an inner cap according to Patent Document 1 has an inner plug 51 fitted and fixed to the container mouth portion 50, and an outer peripheral surface of the container mouth portion 50 so as to cover the inner stopper 51. The cap body 52 includes a top wall 53 and a skirt wall 54 that hangs down from the peripheral edge of the cap body 52. The skirt wall 54 has an inner peripheral surface of the container mouth 50. A female thread 56 that is screwed onto a male thread 55 on the outer peripheral surface is formed, and a tamper evidence mechanism, that is, a tamper evidence band 58 is provided at a lower end thereof via a breakable bridge 57. . A slit 59 through which the cleaning liquid is passed at a predetermined interval in the circumferential direction is formed in the upper part of the skirt wall 54 of the cap body 52. The slit 59 is formed by screwing the cap body 52 into the container mouth portion 50. In the state, it is located above the male thread 55 of the container mouth part 50.

  Accordingly, the content liquid adhering onto the male thread 55 of the container mouth portion 50 is cleaned by the cleaning liquid that has passed through the slit 59 and discharged to the outside together with the cleaning liquid. At this time, even if the content liquid is not washed and discharged and remains on the male thread 55 of the container mouth portion 50, the slit 59 is located above the male thread 55, so that it does not ooze out to the outside. It has the characteristic of not causing appearance defects.

  In the cap with an inner cap described in Patent Document 1, the slit 59 should be located above the male thread 55. However, this cap with a stopper is actually a burr generated on the inner peripheral surface side of the skirt wall by the cutter acting from the outer peripheral surface side of the skirt wall when the slit 59 is opened in the skirt wall 54, and inward of the periphery of the slit. In order to prevent the inner plug 51 from being opened before the bridge 57 of the tamper-evidence mechanism is broken by the deformation 60 (see FIGS. 9 and 10), that is, to prevent tampering by the tamper-evidence mechanism. In order to ensure the truth, the position of the slit 59 is regulated to 1.2 mm or more downward from the upper end of the container mouth part 50. Therefore, the above-mentioned cleaning in the cap with a stopper is usually better as the position of the slit 59 is higher than the male thread 55, but in the case of Patent Document 1, the position of the slit 59 is the container. Since it is 1.2 mm or more below the upper end of the mouth part 50, the cleaning effect may be extremely limited.

  Therefore, the object of the present invention is to allow the position of the cleaning slit to be located above the skirt wall as much as possible even when there is a burr when opening the slit in the skirt wall or the inward deformation of the skirt wall around the slit. An object of the present invention is to provide a cap with an inner stopper that can improve the cleaning effect, prevent the exudation of the content liquid after cleaning, and can guarantee the prevention of tampering by the tamper evidence mechanism.

The present invention has been proposed in order to achieve the above object, and is characterized by having the following configuration.
That is, according to the present invention, it comprises an inner stopper fitted and fixed to the container mouth, and a cap body screwed to the outer peripheral surface of the container mouth so as to cover the inner stopper, A top plate and an inner ring extending downward from the bottom surface of the top plate at a distance from an outer peripheral edge of the top plate and intimately contacting an inner peripheral surface of the container mouth portion, and the cap body includes a top wall And a skirt wall that hangs down from the peripheral edge of the top wall, and the skirt wall has a female thread that is screwed to the outer peripheral surface of the container mouth portion on the inner peripheral surface, and a breakable bridge at the lower end. In the cap with a stopper provided with a tamper-evident band via
At the time of closing, a slit forming region in which a slit penetrating the skirt wall is formed above the female thread, and the inner diameter of the slit forming region is larger than the inner diameter of the skirt wall. A cap with an inner plug is provided in which the outer diameter of the top plate is larger than the inner diameter of the female thread and smaller than the inner diameter of the skirt wall.

  Further, according to the present invention, there is provided a cap with an inner stopper provided on the skirt wall located below the outer peripheral lower surface of the top plate of the inner stopper when the slit is closed.

  According to the present invention, the top plate of the inner plug is formed with an outer ring that extends downward from the outer peripheral edge of the top plate and whose inner peripheral surface contacts the outer peripheral edge from the top surface of the container mouth. A cap with a plug is provided.

  Further, according to the present invention, there is provided a cap with an inner plug in which the inner diameter of the slit forming region and the outer diameter of the inner plate of the inner plug have an interval of 0.2 mm or more.

  In the cap with inner plug of the present invention, the skirt wall in the slit forming region is recessed from the skirt wall of the other part. Therefore, even if there is a burr generated at the time of forming the slit or inward deformation around the slit, During operation, these burrs and inwardly deformed portions do not hit the lower surface of the outer peripheral edge of the top plate of the inner plug, and there is no inconvenience of opening the inner plug before breaking the bridge connected to the tamper evident band. Further, since the inner plug is not opened before the bridge breaks due to the burr and the inwardly deformed portion of the slit, the slit can be formed at the upper limit in the slit forming region. Therefore, the effect of preventing tampering by the tamper evidence mechanism can be achieved and the position of the slit can be increased as much as possible in the slit forming region, so that the cleaning effect can be improved and the cleaning liquid does not ooze out.

  Moreover, the cap with an inner plug of the present invention is provided with a slit on the skirt wall located below the lower surface of the outer peripheral edge of the top plate of the inner plug, so that the cleaning liquid can surely enter from the slit and the cleaning effect is further improved. be able to. Therefore, the above effect can be further ensured.

  Further, the cap with an inner cap of the present invention is such that the inner peripheral surface of the outer ring of the inner plug abuts the outer peripheral edge from the top surface of the container mouth, eliminates the content liquid on the container mouth, and the container for the cleaning liquid during cleaning Intrusion into the inside can be prevented. Therefore, in addition to the above effects, the content liquid can be eliminated and the sealing performance can be improved.

  Further, the cap with an inner plug of the present invention can be burred by slit formation or a skirt formation region by setting the distance between the inner diameter of the slit forming region and the outer diameter of the top plate of the inner plug to 0.2 mm or more. Even if deformed inward, the slit forming region does not contact the inner plug without fail. Therefore, the above effect can be further ensured.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, and a half-cut sectional view showing a state in which a cap with an inner stopper is attached to a mouth portion of a container and is closed, and FIG. 2 is a sectional view of an essential part of the cap with an inner stopper in FIG. is there.
In the figure, a cap 1 with an inner stopper is an inner stopper 4 that is fitted and fixed to the mouth portion 3 of the container 2, and a cap body 5 that is screwed onto the outer peripheral surface of the container mouth portion 3 so as to cover the inner stopper 4. The inner plug 4 extends downward from the bottom surface of the top plate 6 at a distance from the outer peripheral edge 7 of the top plate 6 and is in close contact with the inner peripheral surface of the container mouth 3. The cap body 5 has a top wall 9 and a skirt wall 10 depending from the periphery of the top wall 9, and the skirt wall 10 is screwed to the outer peripheral surface of the container mouth 3 on the inner peripheral surface. A tamper-evidence mechanism at the lower end, i.e. a tamper-evidence band 13 is provided via a breakable bridge 12, and is above the female thread 11 when closed, and The skirt wall 10 located below the lower surface of the outer peripheral edge 7 of the top plate 6 of the inner plug 4 Is provided with a slit forming region 15 in which a slit 14 penetrating the skirt wall 10 is formed. The inner diameter R1 of the slit forming region 15 is larger than the inner diameter R2 of the skirt wall 10 (R1> R2). It is important that the outer diameter R3 of the top plate 6 of the plug 4 is larger than the inner diameter R4 of the female thread 11 and smaller than the inner diameter R2 of the skirt wall 10 (R2>R3> R4).

  The container 2 may be any container as long as it can be fitted with the cap 1 with the inside stopper in its mouth 3, and is preferably used for a bottle type, and the material thereof is synthetic resin or glass. As shown in FIG. 1, the cap 1 with an inner stopper is attached to the mouth portion 3 of the container 2 by forming a male thread 20 on the outer peripheral surface of the container mouth portion 3 and forming it on the inner peripheral surface of the cap body 5. This is done by screwing both the female threads 11 together. At that time, the inner ring 8 of the inner stopper 4 serving as a packing is inserted into the container mouth portion 3 and is in close contact with the inner peripheral surface of the container mouth portion 3.

  On the other hand, the top plate 6 of the inner plug 4 is formed with an outer ring 21 which extends downward from the outer peripheral edge 7 and whose inner peripheral surface abuts on the outer peripheral edge 3b from the top surface 3a of the container mouth 3. ing. Therefore, the inner peripheral surface of the outer ring 21 comes into contact with the outer peripheral edge 3b from the top surface 3a of the container mouth portion 3 to remove the content liquid adhering to the container mouth portion, and into the cleaning liquid container 2 during cleaning. Can prevent intrusion.

  As described above, the cap main body 5 has the top wall 9 and the skirt wall 10, and the skirt wall 10 has a non-slip vertical groove 10 a on the outer peripheral surface, and the container opening on the inner peripheral surface. A female thread 11 corresponding to the male thread 20 of the portion 3 is formed. The female thread 11 is divided at regular intervals in the circumferential direction, and the divided portion serves as a discharge path for the cleaning liquid during cleaning.

  As described above, the tamper evidence band 13 is provided at the lower end of the skirt wall 10 of the cap body 5 via the breakable bridge 12. A plurality of bridges 12 are provided at regular intervals in the circumferential direction, and the tamper evidence band 13 is provided with an elastically deformable locking member 22. This locking material 22, coupled with the locking ridge 23 provided on the outer peripheral surface of the container mouth 3, prevents the cap body 5 from being removed unless the bridge 12 is broken, thereby preventing tampering. I am trying.

  Further, the skirt wall 10 is provided with a slit forming region 15 indicated by L in FIG. 2, and this slit forming region 15 is located above the female thread 11 and outside the top plate 6 of the inner plug 4. This is a portion located below the lower surface of the peripheral edge 7. As described above, it is important that the slit forming region 15 has an inner diameter R1 larger than the inner diameter R2 of the skirt wall 10 (R1> R2). Further, since the outer diameter R3 of the top plate 6 of the inner plug 4 is larger than the inner diameter R4 of the female thread 11 and smaller than the inner diameter R2 of the skirt wall 10 (R2> R3> R4), the inner diameter R1 of the slit forming region 15 is As is apparent from FIG. 2, it can be seen that there is a relationship of R1> R2> R3> R4.

  In the slit forming region 15, a plurality of slits 14 for introducing the cleaning liquid between the cap main body 5 and the container mouth 3 are provided at predetermined intervals in the circumferential direction. The slit 14 is for introducing the cleaning liquid between the cap body 5 and the container mouth 3, and is not limited to the slit, but may be other shapes such as a circle and a rectangle. The installation position of the slit 14 may be anywhere as long as it is within the slit formation region 15, but it is infinitely higher from the viewpoint of the cleaning effect. Therefore, as shown in FIGS. 1 and 2, the slit 14 is installed in the vicinity of the lower surface of the outer peripheral edge 7 of the top plate 6 of the inner plug 4 to improve the cleaning effect to the limit.

The reason why the installation position of the slit 14 can be increased as much as possible is that the inner diameter R1 of the slit forming area 15 in the skirt wall 10 is sufficiently larger than the outer diameter R3 of the top plate 6 of the inner plug 4, and thus the slit 14 is provided in the slit forming area 15. Even if there is a burr 24 due to the slit 14 or an inwardly deformed portion around the slit 14, the burr 24 or the inwardly deformed portion does not hit the outer peripheral edge 7 of the top plate 6 of the inner plug 4. This is because the inner plug 4 does not open before the bridge 12 of the evidence mechanism is broken. According to the experiments by the present inventors, the inner diameter R1 of the slit forming region 15 and the outer diameter R3 of the top plate 6 of the inner plug 4 The slit forming region 15 did not contact. In addition, although the said space | interval should just be 0.2 mm or more, since the upper limit is an infinite diameter from which the top plate of the inner stopper incorporated in a container mouth part can function, it is not infinite, It depends on the magnitude | size of the mouth part of a container Needless to say, they are naturally regulated.

Next, with reference to FIG. 3 thru | or 6, the utilization condition of the cap with an inside plug which becomes the said structure is demonstrated.
First, after filling the container 2 with liquid contents such as teas and fruit juice drinks from the container mouth 3, the cap with cap 1 with the inner cap 4 in the cap body 5 is applied to the container mouth 3. It is rotated in the closing direction and screwed and finally screwed (see FIG. 3). In this process, the locking member 22 of the tamper-evident band 13 at the lower end of the cap body 5 is elastically deformed to get over the locking protrusion 23 of the container mouth 3, and the elastic deformation of the locking material 22 is further restored. Return to the container mouth 3 below the locking protrusion 23. On the other hand, the inner plug 4 has its inner ring 8 inserted into the container mouth portion 3 so as to be in close contact with the inner peripheral surface of the container mouth portion 3, and the top plate 6 of the inner stopper 4 is attached by the top wall 9 of the cap body 5. Press down and close. Even if the content liquid adheres to the top surface of the container mouth portion 3 during filling of the content liquid, the inner peripheral surface of the outer ring 21 comes into contact with the outer peripheral edge 3b from the top surface 3a of the container mouth portion 3, It is possible to eliminate the liquid, and it is possible to more completely prevent the cleaning liquid from entering the container 2 during the later-described cleaning.

  After screwing the cap 1 with the inner stopper into the container opening 3, the cleaning liquid is sprayed from the outside, and the cleaning liquid is sent through the slit 14 between the container opening 3 and the slit forming region 15 which is also the skirt wall 10 of the cap body. . As already described, the slit 14 is located at the upper position as described above. Therefore, the container mouth 3 and its periphery are cleaned with the cleaning effect improved to the limit, and the attached content liquid is washed together with the cleaning liquid. Can be discharged to the outside.

  When opening the container 2 fitted with the cap 1 with the inner cap, the cap body is rotated in the opening direction, the bridge 12 is broken, and the tamper evident band 13 is separated from the lower end of the cap body 5 (see FIG. 4). ). At that time, since the slit 14 is installed as far as possible in the slit forming region 15, that is, near the lower surface of the outer peripheral edge 7 of the top plate 6 of the inner plug 4, the slit 14 is immediately inserted into the inner plug 4. The inner diameter R1 of the slit forming region 15 is equal to the outer diameter R3 of the top plate 6 of the inner plug 4 even though there are burrs 24 and inwardly deformed portions of the slit 14. Since it is much larger (R1 >> R3), it passes without hitting the outer peripheral edge 7 of the top plate 6 of the inner plug 4. Therefore, before the bridge 12 of the tamper-evidence mechanism is broken, the inner plug 4 is not opened, and the tampering can be prevented.

  When the cap body 5 is further rotated in the opening direction, the female thread 11 of the cap body 5 hits the outer peripheral edge 7 of the top plate 6 of the inner plug 4 to start opening the inner plug 4 (see FIG. 5). The inside plug 4 is completely opened (see FIG. 6), and the cap body 5 is removed from the container opening 3 together with the inside plug 4, so that the consumer can consume the liquid in the container 2.

  In the state where the content liquid of the container 2 remains, the cap 1 with the inner stopper is attached to the container mouth 3 again. In this case, since the inner stopper 4 is built in the cap main body 5, The cap body 5 is applied to the container mouth 3 as it is, rotated in the closing direction and screwed, inserted into the container mouth 3 and closed, and finally screwed. .

  FIG. 7 shows another embodiment of the present invention, and is a cross-sectional view showing a state in which a cap with an inner stopper is attached to the mouth of the container and closed. A difference between the cap 1a with a stopper and the cap 1 with a stopper shown in FIGS. 1 to 6 is that the slit forming region 15 located above the female thread 11 of the cap body 5 and below the slit 14 is in the middle. The point is that a middle stopper stopper ridge 30 protruding inward from the outer peripheral edge 7 of the top plate 6 of the stopper 4 is formed. And by having this inner plug stop protrusion 30, the inner plug 4 can be installed in the cap body 5 without rattling, and the opening of the inner plug 4 precedes the female thread 11 during the opening operation. When hitting the outer peripheral edge 7 of the top plate 6, the opening of the inner plug 4 is started and the plug is completely opened. The inner stopper ridge 30 is formed in the horizontal direction, and may be continuous or partially cut out. Further, the inner stopper ridge may extend continuously from the uppermost part of the female thread. Since other configurations and operations are the same as those of the cap 1 with an inner plug shown in FIGS. 1 to 6, the drawings are denoted by reference numerals and description thereof is omitted.

  As mentioned above, although Example 1 and 2 of this invention were demonstrated, it should be understood that a concrete structure is not limited to this and the change in the range which does not deviate from the summary of this invention is possible suitably. .

  The cap with a cap according to the present invention needs to efficiently wash the content liquid adhering to the container mouth portion when filling the content liquid after capping the content liquid into the container, and to prevent tampering with the content liquid. It is extremely useful when you want to complete the tamper evidence mechanism.

FIG. 2 is a half-sectional view showing the embodiment of the present invention shown in Example 1, with a cap with an inner cap attached to the mouth of the container and closed. It is sectional drawing of the principal part of the cap with an inner cap of FIG. It is sectional drawing explaining the opening process of the cap with a middle cap of this invention shown in Example 1. FIG. It is sectional drawing explaining the opening process of the cap with a middle cap of this invention shown in Example 1. FIG. It is sectional drawing explaining the opening process of the cap with a middle cap of this invention shown in Example 1. FIG. It is sectional drawing explaining the opening process of the cap with a middle cap of this invention shown in Example 1. FIG. It is sectional drawing of the state which mounted | wore with the cap with an inner stopper shown in Example 2, and was plugged. It is sectional drawing explaining the plug-opening process of the prior art example shown by patent document 1. FIG. It is sectional drawing explaining the plug-opening process of the prior art example shown by patent document 1. FIG. It is sectional drawing explaining the plug-opening process of the prior art example shown by patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1a Cap with inner plug 2 Container 3,50 Mouth 3a Top surface 3b, 7 Outer peripheral edge 4,51 Inner plug 5,52 Cap body 6 Top plate 8 Inner ring 9,53 Top wall 10,54 Skirt wall 10a Slip Vertical groove 11, 56 Female thread 12, 57 Bridge 13, 58 Tamper evident band 14, 59 Slit 15 Slit formation area 20, 55 Male thread 21 Outer ring 22 Locking material 23 Locking protrusion 24 Burr 30 Inner plug stopper ridge 60 Inward deformation around slit
R1 Inner diameter of slit forming area R2 Inner diameter of skirt wall R3 Outer diameter of top plate of inner plug R4 Inner diameter of female thread

Claims (4)

An inner plug fitted and fixed to the container mouth portion, and a cap main body screwed to the outer peripheral surface of the container mouth portion so as to cover the inner stopper, the inner stopper includes the top plate and the top plate An inner ring extending downward from the lower surface of the top plate at a distance from the outer peripheral edge of the container and closely contacting the inner peripheral surface of the container mouth, and the cap body is suspended from the upper surface wall and the peripheral edge of the upper surface wall. The skirt wall is formed with a female thread that is threadedly engaged with the outer peripheral surface of the container mouth portion on the inner peripheral surface, and a tamper evident band is provided at the lower end via a breakable bridge. In the cap with a stopper,
At the time of closing, a slit forming region in which a slit penetrating the skirt wall is formed above the female thread, and the inner diameter of the slit forming region is larger than the inner diameter of the skirt wall. A cap with an inner plug, wherein the outer diameter of the top plate is larger than the inner diameter of the female thread and smaller than the inner diameter of the skirt wall.   2. The cap with an inner stopper according to claim 1, wherein the slit is provided on a skirt wall located below the lower surface of the outer peripheral edge of the top plate of the inner stopper when the stopper is closed.   The top plate of the inner plug is formed with an outer ring that extends downward from the outer peripheral edge of the top plate and has an inner peripheral surface that contacts the outer peripheral edge from the top surface of the container mouth. Cap with inside plug. The cap with an inner plug according to claim 1, wherein an inner diameter of the slit forming region and an outer diameter of the top plate of the inner plug have an interval of 0.2 mm or more.

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