JP4465565B2 - Cap body that can be easily separated from the container mouth - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap body made of a synthetic resin that fits into a mouth portion of a container, and more particularly to a cap body that is configured to facilitate separation and disposal of a container and a cap body after use.
[0002]
[Prior art]
Recently, the “Law Concerning the Collection and Recycling of Containers and Packaging, etc.” has been enforced, and it has imposed a recycling obligation on specific businesses that use containers for the purpose of reducing waste. However, it is becoming necessary to separate and discard each material.
[0003]
In general, a cap body made of a synthetic resin that fits into a mouth portion of a container, particularly a PET bottle or a bottle, is firmly plugged into the mouth portion so as not to be opened by mischief or the like before use. Therefore, in order for the consumer to separate the cap body from the container-cap structure in such a state, the container or the cap body must be damaged using a hammer, cutter, etc., which is dangerous. Met.
[0004]
In order to solve such a problem, various cap structures have been proposed. For example, a cap described in Japanese Utility Model Laid-Open No. 4-118348 is provided with a cutable thin portion extending in a circumferential direction and a vertical direction in a trunk portion (skat portion) that fits into a container port of a cap body, and the thin portion A gripping piece is provided at the end of the body part surrounded by the container, and the thin part is broken by pulling the gripping part outward, thereby removing a part of the body part located on the outer periphery of the container mouth. The cap is removed from the mouth. However, since the cap as described above directly forms a thin portion on the cap body, there is a possibility that the cap may be broken during molding or a capping operation, and it is difficult to say that the structure is sufficient.
[0005]
In addition, proposals have been made to prevent damage to the cap at the time of stoppering and facilitate separation of the container and the cap (see JP-A-7-315403 and JP-A-8-151033). In this cap, a plurality of vertical slits are formed in advance in the body portion (skat portion) of the cap body, and an annular side wall is integrally fitted to the outer peripheral surface of the body portion. When the cap is plugged, the annular side wall is located on the outer peripheral surface of the body portion, so that the cap is not damaged and its function is not lost. When the container and the cap are separated, if the annular side wall is removed by some means, the cap body can be easily removed from the container opening by the vertical slit provided in the trunk portion. However, in the case of this cap, since it has a three-piece structure that requires an annular side wall in addition to the cap body, there is a problem that the cost increases in terms of the number of molds, an increase in manufacturing processes, and the like.
[0006]
[Problems to be solved by the invention]
In order to easily separate the container and the cap body, in principle, the body portion (skart portion) of the cap body is broken and the portion where the container mouth and the cap body are fitted is relaxed. However, the cap body is removed by weakening the fitting force by exposing it, but the two-piece structure is to be avoided from the cost aspect, and the cap body is directly thinned with the one-piece structure. An object of the present invention is to provide a cap body provided with a portion in which the thin-walled portion does not break even during molding or plugging.
[0007]
[Means for Solving the Problems]
To achieve the above object, in the invention of claim 1, comprising a shoulder portion and an inner and an outer cylinder that match fitted to the container mouth tube, and connecting the outer tube and the inner tube cap In the body, a band having a start end is wound around the outer periphery of the outer cylinder, and both are connected to be separable by the first thin part , and a vertical thin part is provided in the outer cylinder at the separation end of the band, and the outer cylinder and the shoulder part the thin portion that follows the thin portion of the longitudinally inner portion of the provided, the thin portion is provided around the shoulders, and a second thin wall portion continuing from the vertical of the thin portion, said second thin portion is thus configured and a third thin portion thicker than the third thin portion with is formed in a range from the starting end of the band to the front of the separation end, the remaining second thin portion containing the separated end of the band It is characterized by being formed in the range .
[0008]
In the invention of claim 2, in the invention of claim 1, an inclined surface that inclines inward from the band integrally is formed in an upper part of the gap between the outer cylinder and the band. A plurality of vertical ribs integrally projecting inward from the band are formed in the circumferential direction .
[0009]
The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the second thin portion is provided in a range narrower than the third thin portion .
[0010]
In the invention of claim 4, in the invention of any one of claims 1 to 3, the band wound around the outer periphery of the outer cylinder surrounds substantially the entire circumference of the outer cylinder including a portion that is not separated from the outer cylinder. It is characterized by being .
[0011]
According to the configuration of the hinge of the present invention, since the band goes around the outer cylinder, the impact at the time of capping is received by the shoulder portion, so the vertical thin portion and the thin portion around the shoulder portion are affected. It is possible to perform crowning work without giving it, and since the thin thin part is provided after the vertical thin part and the partially thick thin part is provided in a wide range, the thin part around the shoulder part is provided. These points are resistant to impact and can be cut smoothly and easily when cutting. Moreover, the provision Te Wataru' the band round whereas fever is found in addition to the container opening and in a direction to contract the outer tube of the fitting state of the work container and the cap member strong.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The cap body of the present invention is integrally formed of a polyethylene synthetic resin or the like. As shown in FIG. 1, the cap body 1 includes a body portion 3, a pouring portion 4 that continues to the upper portion, and a pouring portion 4. The barrel 3 includes a cylindrical inner cylinder 3A that is in contact with the inner side and the outer side of the container mouth X at the same time, and an outer cylinder 3B that is positioned on the outer periphery thereof. In addition, since the handle 6 is integrally attached to the closed wall 5 and an annular score 7 is formed on the lower surface thereof, the closed wall 5 in the score 7 is removed and filled by lifting the handle upward. A flow path for pouring the liquid can be opened. A cylindrical outer lid 2 that is detachably screwed is covered with a screw portion of the cylindrical cap body 1.
[0013]
A band 8 for stripping the outer cylinder 3B in the circumferential direction is connected to the body part 3 along the outer periphery of the outer cylinder 3B by a (first) thin part 9. Following the longitudinal groove 10 formed in the outer cylinder 3B at the end of the band 8, the outer cylinder 3B is separated from the shoulder 1A of the cap body 1 (second) thin section 11, and following this second thin section. A (third) thin portion 12 thicker than the formed second thin portion is formed along the shoulder 1A.
[0014]
The above configuration will be described in more detail with reference to FIGS.
FIG. 2 is a bottom view of the cap body 1. The band 8 is a band-like object having the same width, is disposed so as to surround the outer periphery of the outer cylinder part 3B, and is connected to the outer cylinder 3B via a thin part 9. In this embodiment (see FIG. 3), the upper side of the band 8 and the outer periphery of the outer cylinder 3B are integrally formed by the thin-walled portion 9, and the upper portion is removed between them to form a uniform gap 15. The upper portion of the gap 15 (the portion where the thin-walled portion 9 is located) has a cross-sectional shape, and the outer wall is inclined inward to form an inclined surface 15A. The inclined surface 15A thickens the upper part of the band 8 and prevents oblique tearing when the band is pulled.
[0015]
As shown in FIG. 2, the band 8 surrounds the outer periphery of the outer cylinder 3B. However, the band 8 can be separated in a range of about 270 degrees from the start end 8A to the end end 8B (part connected to the outer cylinder). In the band portion (in the range of L), there are walls 16 and 16 that do not break at both ends, so that they are not separated from the outer cylinder 3B.
[0016]
FIG. 3 is an enlarged cross-sectional view of the portion (A) of FIG. 2, that is, the vicinity of the start end 8A. The band 8 at the start end has a knob 17 (see FIG. 1) that serves as a finger hook for separating the start end 8A from the thin portion 9. It protrudes upward. When the knob 17 is pulled strongly forward, the start end of the band 8 is formed. Further, the upper portion of the outer cylinder 3B has a shoulder portion 1A for connecting the inner cylinder 3A. A thin-walled portion is formed by drilling an acute groove 20 from the lower surface toward the shoulder portion 1A in an arc shape along the circumference. 12 is formed. Adjacent to the groove 20 is an annular bottle seal 21 having an inclined surface of 45 degrees with respect to the vertical line.
[0017]
FIG. 4 is an enlarged cross-sectional view of the portion (b) of FIG. 2, so that the start end 8A of the band 8 is not easily separated from the outer cylinder 3B, and can be cut around the gap 15 in the vicinity of the start end 8A. A reinforcing wall 18 is provided.
[0018]
FIG. 5 is an enlarged cross-sectional view of a portion (c) of FIG. 2, and a rib 19 protruding toward the gap 15 is provided inside the band 8. As shown in FIG. 2, a plurality of ribs 19 are formed at a plurality of locations, and serve to prevent slipping when pulling with the band 8.
[0019]
6 is an enlarged cross-sectional view of the portion (d) of FIG. The band 8 is separated while breaking the thin wall portion, but the wall 16 is present at the terminal end 8B, and the longitudinal groove 10 and the thin wall portion 10A are provided along the wall 16 from the inside of the outer cylinder 3B (see FIG. 7). The breaking line is configured to shift from the first thin portion 9 to the second thin portion 12.
[0020]
The second thin portion 11 is formed thinner than the third thin portion 12 and the second thin portion 11 is provided near the outer periphery, but the third thin portion 12 is shown in FIG. As shown, since the inner wall of the outer cylinder 3B is inclined by θ, it is provided closer to the center. As shown in FIG. 2, the second thin portion 11 is provided in a range of about 90 degrees from the position of the longitudinal groove 10 to the start end 8A along the shoulder portion 1A. The third thin portion 12 is provided in the range of 270 degrees of the remaining portion, and both thin portions 11 and 12 can cut the entire circumference 360 degrees of the shoulder portion 1A.
[0021]
In the embodiment, the cap body and the outer lid have been described separately. However, the present invention can also be applied to a structure in which the cap body and the outer lid are integrally connected by a thin hinge. Needless to say.
[0022]
Next, the operation will be described.
First, at the position shown in FIG. 3, if the handle 17 is pulled forward, the reinforcing wall 18 is broken, and the band 8 is pulled out while cutting the thin portion 9 for a while. And the band 8 can be separated. The cross-sectional shape corresponding to FIG. 3 from which the band 8 has been removed is as shown in FIG.
[0023]
When the end 8B of the band is reached (FIG. 9), when the band is pulled further outward by applying a little force, the vertical thin portion 10A is cut and the second thin portion 10A connected to the upper portion of the vertical thin portion 10A is obtained. The thin-walled portion 11 can be cut.
Since the second thin portion 11 is formed at the boundary between the peripheral edge of the shoulder portion 1A of the cap body and the upper portion of the outer cylinder (FIG. 12), the outer cylinder is cut from the cap body together with the band if it is further pulled outward. They can be separated (see FIGS. 10, 11, and 13).
[0024]
【effect】
According to the first and second aspects of the invention, since the outer cylinder of the cap body is largely broken, the cap body can be easily removed from the container port even by an elderly child.
According to the invention of claim 3, since the outer cylinder of the cap body can be easily broken, the cap body can be easily removed, and the impact of the folding operation of the plugging operation can be absorbed. The structure can be fully utilized as a breaking cap.
In the invention of claim 4, since the band surrounds the entire circumference of the outer cylinder of the cap body, the vertical thin-walled portion is protected and the contents are heated or heated with respect to the container mouth such as heat filling, shrink wrapping, and heat sterilization. In many cases, the heat treatment is performed, but under such heating, the undercut portion works in the conventional way for those who are familiar with the container mouth, but in the present invention, the band shrinks. The container mouth and the cap body can be integrated. Moreover, since the fact that the band is located on the entire circumference maintains the circular shape, it can be used without any trouble even in the conveyance of the conventional stopper device.
[Brief description of the drawings]
FIG. 1 is a front view of a cap body with an outer lid according to the present invention, partially cut away.
FIG. 2 is a bottom view of the cap body of the present invention.
3 is an enlarged cross-sectional view of a portion in FIG.
4 is an enlarged cross-sectional view of a portion in FIG.
FIG. 5 is an enlarged cross-sectional view of a portion C in FIG. 2;
6 is an enlarged cross-sectional view of a portion in FIG.
FIG. 7 is an enlarged view of the vicinity of d in FIG.
8 is a view showing a state where a band is removed in the cross-sectional view of FIG. 3;
9 is a view showing a state where a band is removed in the cross-sectional view of FIG.
10 is a view showing a state in which the outer cylinder is removed from the shoulder in the cross-sectional view of FIG.
11 is a view showing a state in which the outer cylinder is removed from the shoulder portion in the cross-sectional view of FIG. 9;
FIG. 12 is a perspective view of the cap body of the present invention with a band and a part of the outer cylinder removed from the cap body.
FIG. 13 is a perspective view showing a state in which the band and the outer cylinder are all removed from the cap body in the cap body of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cap main body 2 Outer lid 3A Inner cylinder 3B Outer cylinder 8 Band 8A Band start end 8B Band end 9 First thin part 10 Vertical groove (vertical thin part)
11 2nd thin part 12 3rd thin part

Claims (4)

And an outer cylinder and the inner cylinder that match fitted to the container mouth, and the cap body formed with a shoulder portion for connecting the outer tube and the inner tube,
A band having a start end is wound around the outer periphery of the outer cylinder and both are separably connected by the first thin part ,
The vertical thin portion provided on the outer tube in the separation end of the band, the thin portion following the vertical of the thin portion to the inner portion of the outer cylinder and the shoulder portion is provided, the thin portion is provided around the shoulders cage, a second thin wall portion continuing from the vertical of the thin portion, thus configured and a third thin portion thicker than the second thin portion,
The third thin portion is formed in a range from the start end of the band to the front of the separation end, and the second thin portion is formed in the remaining range including the separation end of the band. Easy cap body. In the upper part of the gap between the outer cylinder and the band, there is formed an inclined surface that inclines inward integrally from the band, and there is a vertical rib that protrudes inward integrally from the band. The cap body according to claim 1, wherein a plurality of cap bodies are formed in a circumferential direction and are easily separated from the container mouth. 3. The cap body according to claim 1 or 2 , wherein the second thin portion is provided in a narrower range than the third thin portion . The band wound around the outer periphery of the outer cylinder surrounds substantially the entire circumference of the outer cylinder, including a portion that is not separated from the outer cylinder, from the container port according to any one of claims 1 to 3. Cap body easy to separate.

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