JP3353242B2 - Separable cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap which can be discarded separately from a container. The present invention relates to a stopper-type cap in which damage is prevented.

[0002]

2. Description of the Related Art In recent years, the separation and disposal of garbage has been strengthened, and it is necessary to separate and discard each material. Conventionally, in the case of containers such as food, glass bottles and metal containers are often used from the viewpoint of preservability and the like,
To this, a resin cap is applied from the viewpoint of moldability, handleability and the like. Even in such a case, when the contents are exhausted and the container is to be disposed of, it is necessary to remove the cap from the container and separate and discard the container and the cap.

A cap generally applied to a glass bottle or a resin container has a cap body having an opening at the center which is fixed to the mouth of the container by stopper fitting, and is attached to the cap body so as to cover the opening of the cap body. Made of top lid. In order for consumers to remove such a cap from the container, a method such as breaking the cap body using a cutter or the like is used, and there is a problem that the cap cannot be easily removed from the container mouth. .

[0004] In order to solve such a problem, various caps have been proposed. For example, a cap body and an upper lid hinged to the cap body are provided.A weakening line is provided in the cap body in the axial direction from the position of the hinge. A cap (Japanese Utility Model Laid-Open Publication No. 5-34151) from which the main body is detached, or a peripheral thin portion is provided in the cap main body, and a gripping piece is provided in a portion connected to the thin portion, and the gripping piece is moved outward. There is known a cap (Japanese Utility Model Laid-Open No. 4-118348) in which a thin portion is broken by pulling the cap to break the cap body and is detached from the container mouth.

[0005]

However, in all of these caps, the cap body is directly provided with a weakening portion. In the former cap, the cap is weakened by holding an upper lid connected to the cap body via a hinge portion. Since the line is broken, if the upper lid is pulled, the upper lid may be broken at the hinge before the weakened line is broken. In particular, when the upper lid is pulled downward from the upper side to be broken, there is a problem that the upper lid is hardly broken and the tendency is remarkably generated. In addition, at the time of plugging operation when fitting the cap to the container mouth, the cap body is stretched by the locking jaw of the container mouth and the inner diameter increases, so there is a possibility that the weakened portion may be broken, so it is still sufficiently satisfactory. Was not something to do.

In the latter cap, since the cap body is provided with a thin portion in the circumferential direction, the thin portion may be broken when the cap is removed from the mold at the time of molding, resulting in poor moldability. is there. In order to prevent such a problem, it is conceivable to use a split mold, but it is still insufficient in terms of molding efficiency. Further, since the grip portion is provided for breaking the thin portion, there is a possibility that the tension weakening line or the like may be broken by mistake except when the consumer discards the thin portion.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cap of a type fitted with a stopper to the mouth of a container, whereby the cap can be reliably broken at the time of disposal, and the container and the cap can be easily separated. Another object of the present invention is to provide a cap capable of preventing the cap from being damaged at the time of tapping.

[0008]

According to the present invention, there is provided a cap body comprising a top plate portion and a skirt portion, the cap body being fitted to a container mouth portion provided with a score for forming a content taking-out opening in the top plate portion. And a cap comprising an upper lid openably hinged to the cap body so as to cover the top plate of the cap body, wherein the cap body has a side wall extending from a lower end of the cap body to cover the skirt portion of the cap body. The side wall is connected to the upper lid via a hinge portion, and an engaging portion is formed between the side cover and the skirt portion. The engaging portion of the skirt portion of the cap body covered by the side wall is formed. Inside and side wall and cap body
A weakened portion is formed on both sides of the connecting portion with the cap body, the upper lid is opened from the cap body, the engaging portion of the side wall is released, and the upper lid is pulled upward in the cap axial direction, so that the cap body skirt portion is formed. A cap is provided in which the formed weakened portion is broken and can be easily removed from the container mouth.

[0009]

In the cap of the present invention, the upper lid is opened,
Next, the side wall connected to the upper lid is released from the cap body by disengaging from the cap body, and the cap is lifted upward from below in the axial direction of the cap, and the weakening provided in the cap body covered by the side wall is reduced. The portion is broken, the cap body is broken, and the cap can be removed from the container mouth. In the present invention, in order to break the weakening line of the cap main body in order to remove the cap from the container mouth portion, the side wall integrally formed with the cap main body is gripped and performed, so that a hinge like a conventional one is used. The weakened portion can be reliably broken without passing through the weakened portion.

Further, the cap body is provided with a weakened portion, but the side wall covers the portion provided with the weakened portion from the outside to form a double structure. Can be more effectively prevented. That is, as described above, in the plugging operation,
Since the cap expands in the radial direction to get over the annular projection of the container mouth, if the cap body is merely provided with the weakened portion, the weakened portion may be broken, but in the present invention, Since the portion where the weakened portion is provided is covered from the outside with a side wall, the cap body, especially the portion where the weakened portion is provided is engaged with the cap body so as to prevent it from trying to expand in the radial direction, The line of weakening is not broken even when subjected to the plugging operation.

Further, by providing the portion of the cap body where the weakened portion is provided to be thinner than the thickness of the other skirt portion, and forming the side wall corresponding to the thinned portion,
There is also an advantage that the side wall can be engaged with the cap body without any unevenness, and the supply of the cap in the plugging operation is performed smoothly. Furthermore, the protrusion provided circumferentially on the inner surface of the cap to fit the cap to the container mouth is not provided on the skirt portion corresponding to the side wall,
By making the portion thin, the thin portion extends following the tapping operation, so that it is possible to effectively prevent the weakened portion from being broken due to the radial expansion of the cap body skirt portion.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIG. 1 is a diagram showing an example of the cap of the present invention,
(A) is a top view, (B) is a cross-sectional view on the XX side of (A),
(C) shows the side view seen from the direction of arrow A of (A), respectively. In FIG. 1, the cap of the present invention generally designated by 1 comprises a cap body 2 fitted into a container mouth (not shown) and an upper lid 4 connected by a hinge 3.
The cap body 2 includes a top plate portion 5 and a skirt portion 6, and a score 8 is provided at a central portion of the top plate portion 5 to define an opening portion 7, and a portion defined by the score 8 (that is, a portion to be opened 7). Is provided with an opening tab 9 serving as a clue to breaking the score 8 when opening. A pouring tube 10 is provided around the opening portion 7. The pouring cylinder 10 has a role of a nozzle when the contents are taken out, and also has a role of preventing the inside of the cap from being stained with the contents after the tab is pulled up and the opening is created. An inner ring 11 is provided on the inner surface side of the top plate portion 5 and located on the outer peripheral side of the score 8. The inner ring 11 is fitted together with the skirt portion 6 in the container opening and sealed.

The skirt 6 located below the hinge 3 is provided with a side wall 13 extending from the lower end 12 and integrally formed with the cap body 2. The side wall 13 has a lower end 12
And is held by the locking portion 14 so as to be folded into close contact with the skirt portion 6. The side wall 13 is connected to the upper lid 4 via the hinge 3. The top cover 4 is a top plate 1
5 and a skirt portion 16. A sealing portion 17 is provided on the inner surface of the top plate portion to keep the sealing performance of the cap in contact with the pouring tube 10 of the cap body. Locking projections 18 and 19 are provided on the lower end of the skirt portion of the upper lid 4 and the upper end of the skirt portion of the cap body 2, whereby the upper lid 4 is locked on the cap body 2. At the position facing the hinge 3, an opening piece 20 for unlocking the cap is released.
Is provided.

FIG. 2 shows the cap of the present invention shown in FIG. 1 with the side wall 13 removed from the locking portion 14. As shown in FIG. FIG.
3A is a side sectional view, and FIG. 3B is a plan view of FIG. The side wall 13 is shown in FIG.
As can be seen from the figure, the cap body is formed continuously from the lower end 12 of the skirt portion 6 via the folded portion 21. The other end of the side wall 13 opposed to the folded portion 21 is connected to the upper lid 4 via the hinge 3. A portion 6b of the cap body skirt portion 6 where the side wall 13 is provided has scores 22a and 22b on both sides thereof. The portion 6b sandwiched between the scores 22a and 22b is provided to be thinner than the other skirt portion 6a, and is recessed from the other skirt portion 6a to form the concave portion 23. The side wall 13 fits into the concave portion 23 and is locked by the locking portion 14, so that the skirt portion 6 can be formed without unevenness. This facilitates the gripping of the cap during the tapping operation.

On the inner surface of the skirt portion of the cap body, there is provided a projection 24 for fitting the cap to the container mouth. The protruding shape 24 is provided in a circumferential shape except for being separated by an air hole 25 for bleeding air at the time of the plugging operation, but is provided in a portion corresponding to the portion 6b sandwiched between the scores 22a and 22b. Is not provided, and the portion 6b is formed thinner than the other skirt portions 6a. During the plugging operation, the thin skirt portion 6b extends, so that the weakened portion can be effectively prevented from being broken due to the radial expansion of the cap body skirt portion.

FIGS. 3 and 4 are views for explaining a method of breaking a cap according to the present invention. In order to break the cap, first, the upper lid 4 is opened, the locking of the side wall 13 is released, and the state shown in FIG. Next, the side wall 13 is pulled up in the direction of arrow P in FIG. Scores 22 provided on both sides of the skirt portion 6b as the side wall 13 is pulled up
Since a and 22b are broken, the skirt portion 6b is only connected to the cap body only at the upper end. Thus, the cap body can be easily deformed, and the cap can be removed from the container mouth.

FIGS. 5A and 5B are views showing another example of the cap of the present invention, wherein FIG. 5A is a top view, and FIG.
(C) shows a side view of (A) viewed from the direction of arrow B, respectively. FIG. 6 shows the cap of the present invention shown in FIG. 5 in which the engagement of the engaging portions 26 and 27 provided on the side wall and the cap body is released. FIG.
3A is a side sectional view, and FIG. 3B is a plan view of FIG. In this embodiment, when the side wall 13 is fixed to the cap body, the engagement protrusions 2 are engaged with both sides of the side wall 13 and the skirt portion 6 so as to be engaged with each other.
6 and 27 are provided respectively. The engagement protrusions 26 provided on the side wall 13 project from both sides, and engage with the engagement protrusions 27 so as to surround the engagement protrusions 27 provided on the cap body from outside. A score 2 is provided on both sides of the skirt portion sandwiched between the engagement protrusions 27 on the cap body side.
2a and 22b are provided.

Also in this embodiment, as described with reference to FIGS. 3 and 4, the cap 13 can be broken by pulling the side wall 13 upward to break the score. In addition, since the engagement protrusion 26 of the side wall 13 is engaged so as to prevent the skirt portion 6a from spreading, it is possible to effectively prevent the skirt portion from expanding in the radial direction during the plugging operation, thereby damaging the score. it can.

[0019]

According to the cap of the present invention, when the cap is destroyed and removed from the container mouth, the upper lid serving as a clue for destruction is cut off from the cap body before the cap body is destroyed. And the cap body can be easily and reliably broken. In addition, the cap can be damaged by the stoppering operation when the cap is attached to the container mouth.

[Brief description of the drawings]

FIG. 1 is a view showing an example of a cap of the present invention.

FIG. 2 is a view showing a state in which a cap shown in FIG. 1 is opened.

FIG. 3 is a view for explaining a cap breaking operation of the present invention.

FIG. 4 is a view for explaining a cap breaking operation of the present invention.

FIG. 5 is a view showing another example of the cap of the present invention.

FIG. 6 is a view showing a state where the cap shown in FIG. 5 is opened.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Cap 2 Cap main body 3 Hinge 4 Upper lid 6 Skirt part 13 Side wall 14 Lock part 22 Score 24 Protrusion 26 Engagement part 27 Engagement part

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuko Kitanaga 1-3-1 Uchisaiwai-cho, Chiyoda-ku, Tokyo Within Japan Crown Cork Co., Ltd. ) Surveyed field (Int.Cl. ⁷ , DB name) B65D 47/12 B65D 47/08

Claims (4)

(57) [Claims] 1. A cap body, which comprises a top plate portion and a skirt portion, and is fitted into a container opening provided with a score forming a content taking-out opening in the top plate portion, and a top plate portion of the cap body. A cap comprising an upper lid hingeably connected to the cap body so as to be openable and closable, wherein the cap body is formed with a side wall extending from a lower end of the cap body to cover a skirt portion of the cap body, and the side wall is formed through the hinge part. An engagement portion is formed between the upper cover and the skirt portion, the engagement portion engaging with the skirt portion .
A weakened portion is formed inside the portion and on both sides of the connection portion between the side wall and the cap body, and the upper lid is opened from the cap body,
A cap which can be easily removed from the container mouth by releasing the engaging portion of the side wall and lifting the upper lid upward in the axial direction of the cap, thereby breaking the weakened portion formed in the cap body skirt portion. Wherein said side walls and the engagement of the skirt, cap formed by being claim 1, wherein such engagement of the skirt portion is covered by the engagement portion of the side wall. Wherein the side walls and the engagement of the skirt portion, formed by being claim 1 cap according to the engaging portion of the side wall is covered by the engagement of the skirt portion. 4. A cap body skirt covered by the side wall, the cap according to claim 3, characterized in that is formed thinner than the other of the cap body skirt.