JP2001278307A - Cap easy to separate from container mouth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To structure a cap easy to separate from a container mouth. SOLUTION: The cap to be mounted on the container mouth comprises an outer cylinder and a band having an initial end which is wound around an outer periphery of the outer cylinder wherein both are connected in a cuttable manner. A longitudinal thin portion is provided at a terminal end of the band, and a thin portion connected with the longitudinal thin portion is provided on an internal side of the outer cylinder and a shoulder, wherein the thin portion comprises a plurality of thin parts different in thickness. By pulling the band outwardly, the band and the outer cylinder can be cut from the shoulder of the cap, so that the cap can be separated from the container mouth.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap made of synthetic resin which fits into a mouth of a container, and more particularly to a cap which is configured to facilitate separation and disposal of a cap and a container after use. Things.

[0002]

2. Description of the Related Art Recently, the "Law Concerning Separated Collection and Recycling of Containers and Packaging" has been enacted, and has imposed a duty on the recycling of certain businesses that use containers for the purpose of reducing garbage. Therefore, it has become necessary for consumers to separate and discard each material.

[0003] Generally, a synthetic resin cap that fits into the mouth of a container, especially a PET bottle, a bottle, or the like, is firmly plugged into the mouth so as not to be opened by mischief or the like before use. . Therefore, in order for a consumer to separate the cap body from the container-cap structure in such a state, the container or the cap body must be broken using a hammer, a cutter, or the like, which is dangerous. Met.

[0004] In order to solve such a problem, various cap structures have been proposed. For example, 4-1
The cap described in Japanese Patent No. 18348 has a body portion (a skirt portion) fitted in a container opening of a cap body, which is provided with a cutable thin portion extending in a circumferential direction and a vertical direction, and is surrounded by the thin portion. A gripping piece is provided at the end of the container, and the thin portion is broken by pulling the gripping piece outward, thereby removing a part of the body located on the outer periphery of the container opening and removing the cap from the container opening. It is configured as follows. However, since the above-described cap forms a thin portion directly on the cap body, there is a possibility that the cap may be damaged at the time of molding or plugging operation, and it is difficult to say that the cap has a sufficient configuration.

[0005] Further, there has been proposed to prevent damage to the cap at the time of tapping and to facilitate separation of the container from the cap (Japanese Patent Application Laid-Open Nos. 7-315403 and 8-15).
No. 1063). In this cap, a plurality of vertical slits are formed in advance in a trunk (a skirt) of a cap body, and an annular side wall is integrally fitted to an outer peripheral surface of the trunk. When the cap is plugged, the annular side wall is located on the outer peripheral surface of the body, so that the cap is not damaged and its function is not lost. If the annular side wall is removed by any means when separating the container and the cap, the cap body can be easily removed from the container opening by the vertical slit provided in the body. However, this cap has a two-piece structure that requires an annular side wall in addition to the cap body, so that there is a problem that the number of molds, the number of manufacturing steps, and the like increase the cost.

[0006]

In order to easily separate the container and the cap body, in principle, the body (skat) of the cap body is broken so that the container mouth and the cap body are separated. By loosening or exposing the fitted part, the fitting force is reduced to remove the cap body. However, the two-piece structure is to be avoided from the viewpoint of cost, and the one-piece structure is to be avoided. It is an object of the present invention to provide a cap body in which a thin portion is provided directly on a cap main body in a configuration of a cap and the thin portion is not broken even during molding or plugging.

[0007]

In order to achieve the above object, according to the present invention, there is provided a shoulder having an outer cylinder and an inner cylinder fitted to a container opening, and connecting the outer cylinder and the inner cylinder. In a cap body having a portion, a band having a start end is wound around the outer periphery of the outer cylinder, and both are cutably connected to each other, and the end of the band (portion connected to the outer cylinder) is vertically attached to the outer cylinder. A thin portion is provided, a thin portion following the vertical thin portion is provided inside the outer cylinder and the shoulder, and the thin portion is constituted by a plurality of thin portions having different thicknesses. .

According to the second aspect of the present invention, the thin portion formed inside the outer cylinder and the shoulder portion is provided around the shoulder portion. The cap body is easily separated.

According to the third aspect of the present invention, the thin portion having a small thickness following the vertical thin portion is provided in a narrower range than the thin portion having a large thickness. The cap body is easily separated from the mouth.

According to a fourth aspect of the present invention, the band wound around the outer circumference of the outer cylinder surrounds substantially the entire circumference of the outer cylinder including a part which is not cut. A cap body which is easily separated from the container opening described above.

According to the structure of the hinge of the present invention, since the band surrounds the outer cylinder, the impact at the time of tapping is received at the shoulder, so that the vertical thin portion and the thin portion around the shoulder are provided. Can be crowned without affecting the head, and because the thin thin part is provided following the vertical thin part and the thick part is provided in a wide area, The thin portion is resistant to impact and can be easily and smoothly cut. Moreover, the provision of the band over the entire circumference acts in a direction in which the outer cylinder contracts due to heat applied to the container opening, and strengthens the fitting state of the container and the cap body.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cap body according to the present invention is integrally formed of a polyethylene synthetic resin or the like. As shown in FIG. 1, a cap body 1 has a body part 3 and a pouring part connected to an upper part thereof. 4 and a closing wall 5 traversing the interior of the pouring portion 4, and the body portion 3 is composed of a cylindrical inner cylinder 3A contacting simultaneously from the inside and the outside of the container opening X and an outer cylinder 3B located on the outer periphery thereof. . In addition, the handle 6 is integrally attached to the closing wall 5,
Moreover, since an annular score 7 is formed in the lower surface, the closing wall 5 in the score 7 can be removed by pulling the handle upward to open a flow path for pouring the filling liquid. The screw portion of the cylindrical cap body 1 is covered with a cylindrical outer lid 2 which is removably screwed.

A band 8 for peeling the outer cylinder 3B in the circumferential direction is formed on the body 3 by a (first) thin portion 9 of the outer cylinder 3B.
Are formed along the outer circumference of the. Following the vertical groove 10 formed in the outer cylinder 3B at the end of the band 8, the outer cylinder 3
B is separated from the shoulder portion 1A of the cap body 1 (second) thin portion 11, and a second portion formed following the second thin portion.
A (third) thin portion 12 thicker than the thin portion is formed along the shoulder 1A.

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-shaped material having the same width, is disposed so as to surround the outer circumference of the outer cylinder portion 3B, and is connected to the outer cylinder 3B via a thin portion 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 a thin portion 9, and a uniform gap 1 is formed between the two except for an upper portion.
5, the upper part of the gap 15 (the part where the thin part 9 is located) has a cross-sectional shape, and the outer wall is inclined inward to form an inclined surface 15A. ing. The inclined surface 15A makes the upper part of the band 8 thicker to prevent the band 8 from being obliquely torn when being pulled.

As shown in FIG. 2, the band 8 surrounds the outer circumference of the outer cylinder 3B.
It is separable within a range of approximately 270 degrees up to the (portion connected to the outer cylinder), and the other band portions (range L) are not separated from the outer cylinder 3B because walls 16 that do not break exist at both ends thereof.

FIG. 3 shows a portion (a) of FIG.
FIG. 4 is an enlarged cross-sectional view of the vicinity of A;
Knob 17 which is used as a finger hook to separate A from thin portion 9
(See FIG. 1) is projected upward. When the knob 17 is forcibly pulled forward, the start end of the band 8 is formed. Also,
The upper portion of the outer cylinder 3B has a shoulder 1A connecting the inner cylinder 3A, and the thin portion 12 is formed by forming an acute-angle groove 20 in an arc shape along the circumference from the lower surface toward the shoulder 1A.
To form Adjacent to the groove 20, there is provided an annular bottle seal 21 having an inclined surface at 45 degrees to the vertical.

FIG. 4 is an enlarged sectional view of a portion (b) of FIG. 2 and is formed across the gap 15 near the start end 8A so that the start end 8A of the band 8 is not easily separated from the outer cylinder 3B. A severable reinforcing wall 18 is provided.

FIG. 5 is an enlarged 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 positions, and serve to prevent slippage when the band 8 is pulled with the band 8.

FIG. 6 is an enlarged sectional view of (d) of FIG. 2, that is, the vicinity of the end 8B of the band 8. The band 8 is separated while breaking the thin portion, but at the end 8B, a wall 16 exists, and along the wall 16, a vertical groove 10 and a thin portion 10A provided from the inside of the outer cylinder 3B along the wall 16 (see FIG. 7). The break line is configured to move from the first thin portion 9 to the second thin portion 12.

It should be noted that the second thin portion 11 is the third thin portion 1
2, the second thin portion 11 is provided closer to the outer periphery, but the third thin portion 12 has an inner wall of the outer cylinder 3B inclined by θ as shown in FIG. So it is provided close to the center. Also, as shown in FIG.
The second thin portion 11 is provided in a range of about 90 degrees from the position of the vertical groove 1 to the start end 8A along the shoulder 1A. The third thin portion 12 is provided in a range of 270 degrees of the remaining portion, and the entire circumference 360 of the shoulder portion 1A is formed by the two thin portions 11 and 12.
The degree can be cut.

Although the embodiment has been described in which the cap body and the outer lid are separate bodies, the present invention also relates to a structure in which the cap body and the outer lid are integrally connected by a thin hinge. It is needless to say that can be adopted.

Next, the operation will be described. First, FIG.
In the position shown in, if you pull the knob 17 toward you,
If the band 8 is pulled out while the reinforcing wall 18 is broken and the thin-walled portion 9 is cut for a while, the outer cylinder 3 is pulled to the end of the band at a stretch.
B and 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.

When the end 8B of the band has been reached (FIG. 9), the band is pulled further outward with a little force.
The vertical thin portion 10A can be cut and a cut can be made in the second thin portion 11 connected to the upper portion of the vertical thin portion 10A. The second thin portion 11 is the shoulder 1 of the cap body.
Since it is formed at the boundary between the periphery of A and the upper part of the outer cylinder, if the outer cylinder is further strongly pulled outward (FIG. 12), the outer cylinder together with the band can be cut and separated from the cap body (FIGS. 10, 11, See FIG. 13).

[0024]

According to the first and second aspects of the present invention, the outer cylinder of the cap body is severely broken, so that the cap body can be easily removed from the container opening even by elderly children. According to the second and third aspects of the present invention, the outer cylinder of the cap body can be easily broken, the cap body can be easily removed, and the impact of the tapping operation can be absorbed. It can be used as a break cap having a one-piece structure. The invention of claim 4 is
Since the band surrounds the entire circumference of the outer cylinder of the cap body, it protects the vertical thin portion and often heats or heats the container opening such as heat filling, shrink wrapping, and heat sterilization of the contents. However, under such heating, in the related art, the undercut portion works around the person who fits into the container mouth and turns around.However, in the present invention, the band works toward the person who contracts, and the container mouth and the cap body. Can be integrated. In addition, the fact that the band is located on the entire circumference means that the band is maintained in a circular shape, so that the band can be used without any trouble even when transporting the conventional tapping device.

[Brief description of the drawings]

FIG. 1 is a front view, partially cut away, of a cap body with an outer lid according to the present invention.

FIG. 2 is a bottom view of the cap body of the present invention.

FIG. 3 is an enlarged sectional view of a location A in FIG. 2;

FIG. 4 is an enlarged sectional view of a location B in FIG. 2;

FIG. 5 is an enlarged sectional view of a location C in FIG. 2;

FIG. 6 is an enlarged cross-sectional view of a portion “d” in FIG. 2;

FIG. 7 is an enlarged plan view of the vicinity of the point d in FIG. 2;

FIG. 8 is a view showing a state where a band is removed in the cross-sectional view of FIG. 3;

FIG. 9 is a view showing a state where a band is removed in the cross-sectional view of FIG. 6;

FIG. 10 is a view showing a state in which the outer cylinder is removed from a shoulder in the cross-sectional view of FIG. 8;

11 is a view showing a state in which the outer cylinder is removed from a shoulder portion in the cross-sectional view of FIG. 9;

FIG. 12 is a perspective view of the cap body of the present invention in a state where a band and a part of an outer cylinder are 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 Beginning end of band 8B End of band 9 First thin part 10 Vertical groove (vertical thin part) 11 Second thin part 12 Third thin part

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3E084 AA04 AA12 AA24 AA32 AB01 BA03 CA01 CB01 CB02 CB04 CC04 DA01 DB01 DB02 DB09 DB12 DC04 FA09 FB01 FC07 GA04 GA08 GB04 GB08 GB12 GB17 KB01 LA03 LA17 LA17 LB02

Claims (4)

[Claims] 1. A cap body having an outer cylinder and an inner cylinder fitted into a container opening, and having a shoulder connecting the outer cylinder and the inner cylinder, the cap body having a start end on the outer periphery of the outer cylinder. At the end of the band, a thin portion in the vertical direction is provided on the outer cylinder, and a thin portion following the vertical thin portion is provided inside the outer cylinder and the shoulder at the end of the band, A thin-walled portion is constituted by a plurality of thin-walled portions having different thicknesses. 2. A plurality of thin portions formed inside the outer cylinder and the shoulder portion are provided around the shoulder portion, and the thin portion having a small thickness is provided following the thin portion in the vertical direction. The cap body according to claim 1, wherein the cap body is easily separated from the container opening. 3. The container according to claim 2, wherein the thin portion having a small thickness following the vertical thin portion is provided in a narrower range than the thin portion having a large thickness. Cap body. 4. The container according to claim 1, wherein the band wound on the outer periphery of the outer cylinder surrounds substantially the entire periphery of the outer cylinder including a part which is not cut. Easy to separate cap body.