JP4580064B2 - Hinged cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hinged cap provided with a cap body that is fitted and fixed to a container mouth, and more particularly, to a separate disposal property that allows the cap body to be easily removed from the container mouth by manual tearing. For superior hinged caps.
[0002]
[Prior art]
Cap with a cap body having a dispensing opening fitted to the container mouth and an upper lid fitted to the cap body so as to cover the dispensing opening of the cap body can be easily opened and sealed. Since it is excellent, it is widely used in the field of food and the like. Even in such a cap, there is a high demand for separation and disposal, and it is required to easily remove the cap from the container.
[0003]
Many proposals have been made on such caps that are fitted and fixed to the container mouth portion in order to improve sorting and disposal.
For example, in Japanese Utility Model Laid-Open No. 7-11559 and Japanese Utility Model Laid-Open No. 5-34151, a score extending downward from the vicinity of the hinge connecting portion with the upper lid is formed on the cylindrical side wall of the cap body of the hinge cap described above. A hinge cap is disclosed. These hinge caps tear down the score of the cylindrical side wall by pushing down the upper lid with the hand, and thereby the cylindrical side wall is destroyed.
[0004]
However, the caps disclosed in these prior arts have a problem that it is not easy to tear the score of the cylindrical side wall. That is, the cylindrical side wall is formed to be relatively thick because it is fitted and fixed to the container mouth, and a protrusion that engages with the outer surface of the container mouth is formed in order to firmly fix the container to the container mouth. Therefore, a great force is required to tear the score formed in this portion. On the other hand, if the score is deeply formed to facilitate tearing, the cylindrical side wall may be broken at the time of stoppering.
[0005]
In order to solve such a problem, the inventors split the cylindrical side wall into an inner side wall and an outer side wall, and a first score is formed along both ends of the hinge connection of the outer side wall. A hinge cap is also proposed in which a second score is engraved on at least the engagement protrusion on the inner wall so as to face the score (Japanese Patent Application No. 10-321114).
[0006]
[Problems to be solved by the invention]
In the above-mentioned hinge cap, breaking of the score is effectively prevented at the time of capping, and when the score provided on the outer wall is torn, the inner wall is released from the tagging force of the outer wall, and the portion other than the hinge connecting portion is used. The cap body can be easily pulled out from the container mouth, but it is desired to remove the cap from the container mouth more easily.
Therefore, the object of the present invention is to remove the hinged cap firmly fitted to the container mouth part from the container mouth part after using the contents, and also to break the cylindrical side wall at the time of stoppering. An object of the present invention is to provide a hinged cap that is effectively prevented.
[0007]
[Means for Solving the Problems]
According to the present invention, a cap main body having a top plate portion and a cylindrical side wall depending from the periphery of the top plate portion, and the cylindrical side wall is fitted and fixed to the container mouth portion, and the upper end of the cylindrical side wall of the cap main body An upper lid that is hinged to the portion, and the top plate portion is formed with an opening portion or an opening inside the extraction tube, and the thickness portion of the cylindrical side wall of the cap body is at least a hinge On the connecting part side, a slit extending downward from the upper end thereof is formed deeply to the vicinity of the lower end of the cylindrical side wall, and the cylindrical side wall is divided into an inner side wall and an outer side wall by the slit. In the hinged cap provided with a locking projection that engages with the container mouth portion on the inner surface side of the inner wall, both ends of the hinge connecting portion of the outer wall extend from the upper end to the lower end or near the lower end. The first axial score is Made, and a second axial score leading to at least the locking projections from the bottom or near the lower end at a position facing the first axial score of the inner wall is formed, also a first axial score and the second A pair of third circumferential scores or slits are formed extending from the lower end portion of the axial score in the opposite direction to the hinge connecting portion, and a hinge connection of the third circumferential score or slit is formed on the inner wall. A hinged cap is provided in which a pair of fourth axial scores are formed from the opposite end portion of the portion to at least the locking projection .
[0008]
In the hinged cap of the present invention,
1 . A fifth circumferential score is formed in the entire region of the portion excluding the hinge connecting portion from the upper end of the fourth axial score or a part thereof;
2 . The third circumferential score or slit is preferably provided from the first axial score to a position of 90 ° at least on both sides with respect to the central portion of the hinge connecting portion.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the hinged cap of the present invention, the cylindrical side wall is composed of a double side wall of the outer side wall and the inner side wall, and the outer side wall acts to tighten the inner side wall. Even if the second axial score is provided at the position of the inner wall corresponding to the first score and the inner score corresponding to the first score, the first score and the second score are broken during the capping. It can be effectively prevented.
[0010]
Further, in the cap of the present invention, the cylindrical side wall of the cap fitted and fixed to the container mouth portion not only destroys the outer wall and the inner side wall in the axial direction as in the prior art, but also the first score and the second Since there is a pair of third circumferential scores or slits extending from the lower end of the second score in the direction opposite to the hinge connection, the outer wall is divided from the inner wall fixed to the cap body. As a result, the outer wall can easily spread outward, and the tagging on the inner wall can be released.
That is, when removing the cap from the container mouth, the upper lid is pulled downward about the hinge connecting portion, the outer wall is destroyed by tearing the first score, and then the upper lid is lifted upward to pull the second lid Tear the score and destroy the inner wall. A third circumferential score or slit is provided at the lower end of the outer and inner walls, so that the outer wall can easily extend outward from the portion of the first score that has been broken, and this portion further upwards. By lifting, the entire cap can be easily removed from the container mouth.
[0011]
In the present invention, in addition to the first to third scores or slits, it is particularly preferable to provide the above-described fourth score in the axial direction and the fifth score in the circumferential direction. As a result, the inner wall can also be easily broken into the fourth score in the axial direction and the fifth score in the circumferential direction continuously from the third score or slit, so that the cap can be removed from the container mouth. It was possible to do it easily.
That is, the outer wall is expanded outward by the third score or slit, and the fifth score is broken through the fourth score, thereby locking the inner wall to the container mouth. The inner wall can be destroyed above the projection, and the cap can be easily removed from the container mouth.
[0012]
In the present invention, as shown in FIG. 2 to be described later, the third circumferential score or slit is the center portion of the hinge connecting portion from the position of C and D where the first score is provided. It is particularly preferable that a third score or slit is provided at least on both sides in the range of 90 °, that is, between C and B and between D and F. Thereby, there exists an advantage that it is easy to expand an outer side wall outward and the fracture | rupture of a 5th circumferential direction score becomes easier.
Moreover, as shown in FIG. 2 described later, the fifth circumferential score may of course be provided in the range of C to B to A to F except for the hinge connecting portions C to D, The fifth circumferential direction score may be provided only on the inner wall between the upper ends of the pair of fourth scores, that is, only in the range of B to A in FIG.
[0013]
【Example】
The hinged cap of the present invention will be described in detail with reference to the accompanying drawings.
1 is a plan view of an example of a hinged cap according to the present invention in a state where an upper lid is opened, FIG. 2 is a bottom view of FIG. 1, and FIG. 3 is a side taken along line XX of FIG. 4 is a partial cross-sectional view of each part of the cylindrical side wall in FIG. 2, (a) is a part between B to A, F, (b) is a part of B or F, ( c) represents a portion between B to C or F to D, (d) represents a portion of C or D, and (e) represents a portion between C to E to D, respectively.
The hinged cap of the present invention, indicated as a whole by 1, generally comprises a cap body 2 and an upper lid 4 connected to the cap body 2 by a hinge 3.
The cap body 2 is connected to the top plate portion 5 and the inner wall 6 and the inner wall 6 hanging from the top plate portion 5 at least at the lower end of the hinge connecting portion 3 and is integrally formed with an outer wall 7 so as to cover the inner wall from the outside. ing. Further, a circumferential locking projection 8 is formed on the inner surface of the inner wall 6, and extends downward from the inner wall 6 at a peripheral edge of the inner surface of the top plate portion 5. An inner ring 9 is formed. That is, a container mouth portion (not shown) is fitted into the space between the inner ring 9 and the inner wall 6, and the cap body 1 is firmly fixed to the container mouth portion by the locking projection 8.
[0014]
A score 10 is formed on the top plate portion 5 of the cap body 2, and a score breaking tab 11 is provided on the upper surface side of the top plate portion 5. By pulling the tab 11, the score 10 is broken. An opening for dispensing the content liquid is formed.
Further, on the upper surface side of the top plate portion 5, a pouring cylinder 12 for pouring out the content liquid is formed so as to surround the score 10, and the content liquid poured out through the pouring opening is the pouring cylinder. 12 is guided.
[0015]
The upper lid 4 includes a top surface 21 and a side wall 22 depending from the peripheral edge of the top surface 21, and a seal-like projection 23 extending downward from the inner surface of the top surface 21 is formed, and the upper lid 4 is closed. In this state, the outer surface of the circumferential protrusion 23 is in close contact with the inner surface of the dispensing cylinder 12 provided on the cap body, and the sealing performance after the dispensing opening is formed is ensured.
On the upper surface side peripheral portion of the top plate portion 5, a relatively low-profile annular protrusion 13 for locking the upper lid is formed, and a concave portion 24 is formed in the lower part of the inner surface of the side wall 22 of the upper lid 4. That is, in a state where the upper lid is closed, the annular protrusion 13 of the cap body and the concave portion 24 of the upper lid are engaged with each other, and thereby the closed state is maintained.
[0016]
An opening tab 26 having a convex portion 25 is provided at a position opposite to the hinge connecting portion 3 of the upper lid 4, and the outer wall 7 of the cap body 2 is corresponding to the position of the opening tab 26. A concave portion 14 is formed on the outer surface of. The concave portion 14 and the convex portion 25 make it easy to put a finger on the unsealing tab 26 when the upper lid 4 is opened, so that the upper lid can be easily opened.
The hinge connection 3 between the upper lid 4 and the upper end of the outer wall 7 is generally formed of a wide main connection portion 3a and bands 3b and 3b located on both sides thereof. The band 3b is provided slightly below the main coupling portion 3 with the upper lid 4 open, and hinges the upper lid 4 and the outer wall 7 together.
[0017]
In the hinged cap of the present invention, first axial scores 30a and 30b extending from the upper end to the lower end are formed at both ends of the hinge connecting portion 3 of the outer wall 7, and the first score 30a of the inner wall 6 is set. Second axial scores 31a and 31b are formed at positions facing 30b so as to be continuous with the first scores 30a and 30b. The second scores 31a and 31b are terminated at the upper part from the lower end 15 of the inner wall 6 and the outer wall 7 beyond the locking projection 8 of the inner wall 6, and the upper lid 4 is pulled downward to By breaking the first score 30a, 30b and then pulling the upper lid 4 upward, the second score 31a, 31b is broken. Further, the continuous points 32 of the first score 30a, 30b and the second score 31a, 31b are slits, and from this continuous point 32 to C-B of the inner wall 6 and the lower end 15 of the outer wall 7, and D A pair of third circumferential scores or slits 33a and 33b extending in a direction opposite to the hinge connecting portion 3 is formed between the first and second scores 31a and 31b. As a result, the outer wall 7 can easily spread outward.
[0018]
The inner wall 6 has a third score or a fourth axial score extending vertically from the position of the ends B and F on the opposite side of the hinge connecting portion of the slits 33a, 33b to a position above the locking projection 8. 34a and 34b are formed. Further, a fifth circumferential score 35 is provided at a substantially upper end position of the fourth scores 34a and 34b in a portion excluding the hinge connecting portion 3 of the inner wall 6. With the fourth score 34 and the fifth score 35, the fifth score is broken at least in the region on the hinge connecting portion side between B to A and F shown in FIG. Between F, the outer wall is easily expanded by the third score or the slit and the fifth score, so that the cap body can be easily removed from the container mouth.
[0019]
In the present invention, the third score or slit may be either a score or a slit, but if it is a slit, the outer wall easily expands outward by breaking the first and second scores, It is more preferable because it can easily shift to the breaking of the fourth and fifth scores. The third score or slit is preferably provided from the position C, D (see FIG. 2) of the first score to a position of 90 ° on at least both sides with respect to the central portion E of the hinge connecting portion. This allows the outer wall to be expanded outward in a wide range, and the fourth score and fifth score to be subsequently broken easily, so that the cap body can be easily removed from the container mouth. It becomes.
[0020]
As shown in the above-described embodiment, the fifth score is preferably formed on the inner wall over substantially the entire circumference of the inner wall excluding the hinge connecting portion from the viewpoint of easy opening, 2 may be provided only on the hinge connecting part side between B to A to F, or may be provided from the hinge connecting part side between B to A to F to both ends of the hinge connecting part. .
It is preferable that the first score and the second score are provided on the inner surface side of the outer wall and the inner wall, respectively, from the ease of breaking the score.
[0021]
In the above-described embodiments, the cap having a configuration in which the cylindrical side wall is divided into the inner side wall and the outer side wall by the annular slit has been described. However, the present invention is not limited to this aspect, and the cylindrical side wall is not limited to this aspect. It is also possible to adopt a cap that is divided by arc-shaped slits, leaving the hinge connecting portion and the portion on the opposite side of the hinge connecting portion (about 170 ° centering on A in FIG. 2).
In the above-described embodiment, the cap of the aspect in which the opening for dispensing the content liquid is formed by breaking the score 10 has been described, but the present invention is of course not limited to this aspect. A barrier film covering the opening for use may be adhered to the top plate portion 5.
[0022]
Further, in the above-described hinged cap of the present invention, the thin inner wall spreads outward when plugging, but the inner wall is protected so as to be tightened from the outside by the outer wall. There is no risk of breaking. In addition, even when the stopper is plugged and the cap body is fixed to the container mouth portion, the inner wall slightly expands to the outside, but the outer wall is also in close contact with the inner wall and is tightened. The fitting force between the container and the container mouth portion does not decrease.
[0023]
In the present invention, as the resin used for molding the cap described above, various plastics such as low-, medium- or high-density polyethylene, linear low density polyethylene, polypropylene, thermoplastic polyester, polyamide, styrenic resin, ABS resin or the like is generally used. Further, a liner can be provided separately from the cap body, and as such a liner, low density polyethylene, ethylene polymer, various rubbers or thermoplastic elastomers, acrylic resin plastisol, vinyl chloride plastisol, or the like can be used. .
[0024]
The hinged cap of the present invention is molded into a shape with the top lid opened as shown in FIGS. 1 to 3 by integral molding such as injection molding or compression molding using the above resin. Moreover, although a score or a slit can also be formed by post-processing, when forming a cap, forming simultaneously is preferable.
[0025]
【The invention's effect】
According to the onset bright, and the cap body and the cylindrical side wall and a cylindrical side wall which depends from the top plate portion and the top plate peripheral edge is fitted fixed to the container opening, the cylindrical side wall of the cap body An upper lid hinged to the upper end, the top plate portion is formed with an opening portion or an opening inside the extraction tube, and the thickness portion of the cylindrical side wall of the cap body is at least On the hinge connecting part side, a slit extending downward from the upper end is formed deeply to the vicinity of the lower end of the cylindrical side wall, and the cylindrical side wall is divided into an inner side wall and an outer side wall by this slit. In addition, in the hinged cap provided with a locking projection that engages with the container mouth portion on the inner surface side of the inner wall, the both ends of the hinge connecting portion of the outer wall are located from the upper end to the lower end or near the lower end. The first axial score that extends And a second axial score from the lower end or near the lower end to at least the locking projection is formed at a position facing the first axial score on the inner wall, and the first axial score and the second A pair of third circumferential scores or slits are formed extending from the lower end of the axial score in the opposite direction to the hinge coupling portion, and the third circumferential score or slit hinge coupling portion is formed on the inner wall. A pair of fourth axial scores are formed from the opposite end to at least the locking projection, so that the cap body can be easily removed from the container mouth by manual tearing without using a special tool. Therefore, it was possible to provide a hinged cap with extremely good separation and disposal.
[Brief description of the drawings]
FIG. 1 is a plan view of an example of a hinged cap according to the present invention in a state where an upper lid is opened.
FIG. 2 is a bottom view of FIG.
3 is a side sectional view taken along line XX in FIG. 1. FIG.
4 is a partial cross-sectional view of each part of a cylindrical side wall in FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cap with hinge of this invention 2 Cap main body 3 Hinge connection part 4 Top cover 6 Inner side wall 7 Outer side wall 30 1st axial direction score 31 2nd axial direction score 33 3rd circumferential direction score 34 4th axial direction score 35 Fifth Circumferential Score

Claims (3)

A cap body having a top plate portion and a cylindrical side wall depending from the periphery of the top plate portion, and the cylindrical side wall is fitted and fixed to the container mouth portion, and is hinged to the upper end portion of the cylindrical side wall of the cap body The top plate portion is formed with an opening portion or an opening inside the pouring tube and the pouring tube, and the thickness portion of the cylindrical side wall of the cap body is at least on the hinge connecting portion side. A slit extending downward from the upper end is formed deep into the vicinity of the lower end of the cylindrical side wall, and the cylindrical side wall is divided into an inner side wall and an outer side wall by this slit, and the inner side of the inner side wall In the hinged cap provided with a locking projection for engaging with the container mouth portion, the first axial score extending from the upper end to the lower end or near the lower end is provided at both ends of the hinge connecting portion of the outer wall. Formed and inside A second axial score leading to at least the locking projections from the bottom or near the lower end at a position facing the first axial score wall is formed, also in the first axial score and a second axial score A pair of third circumferential scores or slits are formed that extend in the opposite direction from the hinge connection from the lower end ,
On the inner wall, a third circumferential score or a pair of fourth axial scores from the opposite end of the hinge connecting portion of the slit to at least the locking projection are formed,
A hinged cap characterized by that. The hinged cap according to claim 1, wherein a fifth circumferential score is formed in the entire region of the portion excluding the hinge connecting portion from the upper end of the fourth axial score or a part thereof. The pair of third circumferential score or slit, from the first axial score, at least on both sides relative to the central portion of the hinge connecting portion to claim 1 or claim 2 is provided to the 90 ° position Hinged cap as described .

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