JP2002264960A - Detachable cap for classified disposal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin cap capable of maintaining sealing mechanism after attaching to a vessel for the resin cap and easily detaching the resin cap from the vessel when detaching the cap, and fittable to the vessel without damages on the resin cap when attaching the cap. SOLUTION: In a detachable cap for classified disposal, any damages or attaching troubles can be prevented when attaching the cap to the vessel by providing unevenness 14 on a cut section of an inner surface of an outer cylinder 3 and an outer surface of a middle cylinder 6 of the cap.

Description

DETAILED DESCRIPTION OF THE INVENTION

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cap for easily separating a container and a resin cap, which can be attached to a container at the time of tapping without breaking, and has excellent sealing properties at the time of use. , A tamper-evident cap that indicates that the cap has been opened.

[0002]

2. Description of the Related Art Resin caps have been widely used because they can be integrally molded, are easy to plug because of their excellent flexibility, and have good sealing properties with containers after plugging. I have. In order to separate the resin cap with a different material from the container from the viewpoint of resource reuse without using a tool, it has a weakening line that weakens a part of the resin cap,
There is a way to break this by holding the knob. Actual Kaihei 7
-845 clamps the container mouth between the inner cylinder and the middle cylinder of the cap,
Furthermore, a projection locking part is provided inside the outer cylinder, this is engaged vertically with the projection provided on the outside of the container to maintain the sealing performance, and when separating the cap after use, pull the knob provided on the outer cylinder. Cutting is performed along a previously provided weakening line, and the outer cylinder is removed. Then, the inner lid and the inner lid integrally formed with the inner cylinder can be separated from the container.

Japanese Patent Application Laid-Open No. H10-59400 discloses that when a container mouth is sandwiched between an inner cylinder and a middle cylinder of a cap, a projection is provided on the inner surface of the middle cylinder, the projection is fitted into a recess provided outside the mouth of the container, and the middle is further inserted. The cylinder is provided with several notches in the axial direction. Further, the inner surface of the outer cylinder and the outer surface of the middle cylinder are in close contact with each other via a cut surface, and are integrally formed via a breakable bridging portion provided above or below. At the time of unplugging, after breaking the weakening line provided in the outer cylinder, break the bridging part one after another and pull the outer cylinder to separate the entire cap from the container from the container opening sandwiched between the inner cylinder and the middle cylinder can do. However, there was a disadvantage that the stopper was easily broken.

In Japanese Patent Application Laid-Open No. 11-236065, the container mouth is sandwiched between an inner cylinder and a middle cylinder of a cap, and the inner cylinder and the inner cylinder have projections on the inner surfaces thereof, so that the sealing property is good. Further, on the outside, there is provided a body portion which also serves to prevent breakage of the stopper and to hold the stopper. This knob is large and easy to handle for unplugging, so it is easy to unplug.However, since this trunk is easily visible outside the cap and attracts the attention of customers, pull it at the beginning of use to see it. Sometimes it was easy to intrigue.

[0005]

SUMMARY OF THE INVENTION The present invention maintains the sealing function after mounting a container as a resin cap, allows the container and the resin cap to be easily separated at the time of removal, and furthermore, at the time of tapping. An object of the present invention is to develop a resin cap that can be fitted to a container without damaging the cap.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have conducted intensive studies and as a result, have found that when a resin cap composed of an inner cylinder, a middle cylinder and an outer cylinder is plugged, the resin cap is closed. As a method of preventing damage, the present inventors have found that the outer cylinder also having a function of loosely fastening the middle cylinder from the outside and the middle cylinder are physically fixed to prevent damage at the time of tapping and completed the present invention. That is, the present invention provides an inner cylinder and a middle cylinder for sandwiching at least the container opening from inside and outside, and a cap body having a top plate and an outer cylinder integrally molded with the cap body, and the middle cylinder is provided in the axial direction. A plurality of extending notches are provided at intervals in the circumferential direction, and the outer cylinder is provided with a breakable weakening line extending from the upper end to the lower end of the outer cylinder,
Except for the vicinity of the weakening line, the middle cylinder and the outer cylinder are cut off from the outer surface of the middle cylinder and the inner surface of the outer cylinder in a detachable cap integrally formed through a plurality of breakable bridging portions provided above. A detachable cap for separation and disposal, characterized in that at least a pair of mutually engaging concave and convex members which are in close contact with each other via a surface and extend in the axial direction are provided on the cut surface.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 4, the separating cap for separation and disposal according to the present invention comprises a cap body 2 and an outer cylinder 3 connected to the cap body 2 via a connecting portion. The cap body 2 has an inner cylinder 7 and a middle cylinder 6 for holding the container mouth from inside and outside, and a top plate 5, and the top plate 5 has a pouring nozzle 11, a pouring opening serving as a pouring port. A tab 10 for removing the scheduled portion 9 and the scheduled opening portion 9 for pouring is provided. Further, a projection 12 for fixing the container mouth portion to the cap is provided inside the middle cylinder 6, and a plurality of notches 13 extending in the axial direction are provided on the middle cylinder 6. The notch 13 has a role of expanding the middle cylinder from the center of the container to the outer periphery when the cap is fitted to the container, and playing a role of securely tightening the container by loosely tightening the container.

As is apparent from FIG. 1, the outer cylinder 3 and the cap body 2 are connected by a bridging portion 15 which can be easily cut, and the bridging portion 15 is provided at an interval. Also, the weakening line 1 required to separate the outer cylinder from the cap
7 is provided in the axial direction of the outer surface of the outer cylinder. A knob serving as a clue for breaking the weakening line 17 may be provided on the upper surface of the outer cylinder. When separating and discarding the cap after using the container, pull this knob to break the line of weakness and subsequently break the bridging part, so that the cap is loosened and the cap can be easily removed from the container. Can be detached.

FIG. 5 shows an example of a cross-sectional shape of an uneven portion extending in the axial direction provided on a cut surface of the outer surface of the inner cylinder and the inner surface of the outer cylinder, which is an essential part of the present invention. FIG. 5 shows the irregular shape as a triangle shape, a semicircle shape, a rectangular shape, and a trapezoidal shape. However, the slip between the outer surface of the middle cylinder of the cap body and the inner surface of the outer cylinder can be suppressed at the time of tapping, and the two can be easily separated. Other shapes can be used at all if possible. Further, as shown in FIG. 5, the protrusion may be provided on either the middle cylinder side or the outer cylinder side. Further, there is no particular limitation on the position and the number of the unevenness provided, and the position and the number are appropriately selected within a range in which the slip between the outer surface of the middle cylinder of the cap body and the inner surface of the outer cylinder can be suppressed at the time of plugging.

FIG. 6 is a side perspective view showing an example of the installation direction of the irregularities extending in the axial direction provided on the cut surface of the outer surface of the inner cylinder and the inner surface of the outer cylinder. In FIG. 6, as the installation direction, the one provided in parallel with the axial direction and the one provided in a spiral shape along the cap circumference are shown. Others are perfectly acceptable. FIG. 6 shows an example in which the cap body is provided from the upper end to the lower end of the cut surface between the outer surface of the inner cylinder and the inner surface of the outer cylinder. It is not necessary to install from the lower end to the lower end, and it may be provided in a part thereof.

As described above, by providing irregularities extending in the axial direction on the cut surfaces of the outer surface of the inner cylinder and the inner surface of the outer cylinder of the cap body, slippage between the two at the time of plugging can be effectively suppressed, and the cap can be prevented from slipping. It is possible to prevent damage and malfunction of mounting. Therefore, the strength of the weakened line and the bridging portion, which are essential mechanisms for sorting and discarding, can be set to a strength that can be easily broken at the time of discarding.

The present invention is not limited to a detachable cap in which the upper lid is integrated with the cap via the hinge portion as described above, but relates to another detachable cap, for example, a container having a screw port. Can also be applied. Also in this case, the unevenness that meshes with the outer surface of the middle cylinder and the inner surface of the outer cylinder is formed, which is the same as that of the detachable cap integrated with the upper lid via the above-described hinge portion. It is exactly the same that when the stopper cap is fitted to the container, the cap can be prevented from being damaged or improperly attached due to the unevenness.

The material for molding the cap of the present invention is not particularly limited as long as it is generally used for molding a resin cap, and various plastics can be used. The method of molding is not particularly limited, and molding can be performed by injection molding, compression molding, or the like.

According to the present invention, when the cap is fitted to the container, the damage of the cap and the inconvenience of mounting, which have conventionally occurred, can be prevented. is there.

[Brief description of the drawings]

FIG. 1 is a view of an example of a cap of the present invention as viewed from above with an upper lid opened.

FIG. 2 is a sectional view of the cap shown in FIG. 1 when viewed from a side.

FIG. 3 is a side view showing a state where the cap shown in FIG. 1 is attached to a container.

FIG. 4 is a cross-sectional view when the state of FIG. 3 is viewed from the side.

FIG. 5 is a view of the concave and convex shapes provided on the cut surfaces of the middle cylinder and the outer cylinder as viewed from below.

FIG. 6 is a perspective view of the installation direction of the unevenness provided on the cut surface of the middle cylinder and the outer cylinder seen from the side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Cap main body 3 Outer cylinder 4 Top lid 5 Top plate part 6 Middle cylinder 7 Inner cylinder 8 Expected break line 9 Expected opening part 10 Tab 11 Expired nozzle 12 Projection 13 Notch 14 Unevenness 15 Bridge part 16 Hinge 17 Weakening line 18 Outlet nozzle end 19 Annular protrusion 20 Top surface 21 Cut surface

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 BA02 BA03 CA01 CB01 CB02 CB04 CC03 DA01 DB01 DB09 DB13 DC03 FA03 FA09 FC07 GA08 GB08 GB12 GB17 LA03 LB02

Claims (3)

[Claims] An inner cylinder and a middle cylinder for clamping at least a container opening from inside and outside, a cap body having a top plate and an outer cylinder integrally formed with the cap body are provided in the axial direction. A plurality of notches extending in the circumferential direction are provided at intervals in the circumferential direction, the outer cylinder is provided with a breakable weakening line extending from the upper end to the lower end of the outer cylinder, and the middle cylinder and the middle cylinder except near the weakening line. The outer cylinder is a detachable cap integrally formed through a plurality of breakable bridging portions provided at an upper part, wherein an outer surface of the middle cylinder and an inner surface of the outer cylinder are in close contact with each other via a cut surface, and A detachable cap for separation and disposal, characterized in that at least a pair of mutually engaging concave and convex members extending in the axial direction are provided on the cut surface. 2. The detachable cap for separation and disposal according to claim 1, wherein the upper cover is engaged with the cover via a screw or a hinge. 3. The detachable cap according to claim 1, wherein the outer cylinder has a knob for breaking the line of weakness.