JP2002002743A - Synthetic resin cap for separate collection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate picking of a picking piece to detach a cap formed of a different material from that of a container and pressed against the container when the container is recycled, and to prevent the cap from being blocked in a chute in a plugging material. SOLUTION: This cap for separate collection comprises a cylindrical part 4 attached to a container mouth part 2, the picking piece 11 forming a part of the cylindrical part and provided in a projecting manner from the cylindrical part, and a weakening line continuous to the picking piece, and a push-out projection 12 of the picking piece which is pushed outside the outer circumference of the cylindrical part when plugged is provided on an inner surface of the picking piece.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap fitted to a mouth of a container.
The present invention relates to a synthetic resin separation / collection cap having a knob.

[0002]

2. Description of the Related Art In recent years, resource recycling campaigns have become popular, and used containers with caps are also being recycled. When recycling this container, since the material of the container and the cap are different, both must be separated. However, since the locking ridge of the cap is pressed against the engaging concave portion of the container mouth, the cap cannot be easily removed.

Therefore, in order to solve this problem, a weakening line for tearing is provided in the cylindrical portion of the cap, and a knob is provided to facilitate pulling the weakening line.
When the knob is pulled in a predetermined direction, the weakening line is torn off, and the locking ridge of the cylindrical portion is broken, so that the locking force is weakened and the locking member is easily released.

[0004] However, since this knob piece protrudes from the outer peripheral surface of the cylindrical portion, there is an advantage that it is easy to grip, but on the other hand,
The following problems occur. That is, when plugging the mouth of the container, the cap is sent to the stoppering machine via the chute of the cap supply device, but if the knobs protrude from the cylindrical portion, the adjacent knobs become entangled with each other. It fits together and collects. Then, the caps cannot be supplied one by one, and the caps are clogged in the chute.

To solve this problem, the following bottle stopper has been proposed. That is, in the bottle stopper that opens the spout by picking, a horizontal U-shaped window is provided on the peripheral wall,
A bottle stopper, wherein a tongue-like knob is formed in the window, and a cut is provided in the lateral or oblique direction from the root of the knob, and a part of the peripheral wall can be torn along the cut.

[0006]

In the bottle stopper described above, the tongue is formed in a horizontal U-shaped window provided on the peripheral wall. The fingertip must be inserted into the small gap between the tongue and the tongue to pick the tab. Therefore, the tongue-like picking is very difficult to pick and does not strongly pick, so that it is difficult to apply a large force to the picking.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to prevent adjacent caps from being entangled with each other and to make it easy to pick a piece.

[0008]

According to the present invention, there is provided a cylindrical portion fitted to a container mouth, a knob which forms a part of the cylindrical portion and is provided so as to protrude from the cylindrical portion; A separating and collecting cap made of a synthetic resin, comprising a weakening line continuous to the piece; characterized in that a protrusion for extrusion is provided on an inner surface of the knob.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present inventor has noticed that the above-mentioned problem can be solved if the knob does not protrude from the cylinder before tapping, but protrudes after tapping. Therefore, a protrusion for extrusion is provided on the inner surface of the knob that forms a part of the cylindrical portion, and the outer surface is included in the same surface as the outer surface of the cylindrical portion before tapping, and also by the mouth of the container when plugging. The extrusion protrusion is pushed so as to protrude from the outer peripheral surface of the cylindrical portion.

The free end of the knob is located within the cutout window, but the cutout window is omitted, and the knob is partitioned into tongues by cuts or weakening lines to form a knob. You may make it protrude from a cylinder part. In addition, it is sufficient that this projection is formed so that the tab is easily picked after stoppering.
The shape, size, position, and the like are appropriately selected as needed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail with reference to FIGS. A cap 3 made of synthetic resin is fitted to the mouth 2 of the container 1. The cap 3 is connected to the mouth 2
A cylindrical portion 4 that is pressed against the outer periphery of the inner portion, an inner tube 13 that is pressed against the inner periphery of the mouth portion 2, and an outer lid 5 that is screwed to the cylindrical portion 4. Although illustration is omitted, a pouring cylinder is provided on the upper end surface of the cylindrical portion 4, and a blocking wall with a fissure is provided inside the pouring cylinder, and a pull ring fixed to the blocking wall. , Are provided.

An annular locking ridge 4 is provided on the inner side 4A of the cylindrical portion 4.
a is provided. The locking ridge 4a is fitted into the engaging recess of the mouth 2 by tapping.

A cutout window 10 is formed in the cylindrical portion 4, and a tongue-shaped knob 11 is located in the window 10. The knob 11 forms a part of the cylindrical portion 4 and is formed in an arc shape in cross section. Since the radius of curvature of the knob 11 is the same as that of the cylindrical portion 4, the outer peripheral surface of the cylindrical portion 4 and the outer peripheral surface of the knob 11 are located on the same plane.

The knob 11 has a free end 11a and a proximal end 1a.
1b. A finger hanging gap s is formed on the distal end side of the free end portion 11a, and the size of the gap s is appropriately selected in consideration of the degree of finger catching.

The upper end of the base end 11b is continuous with the circumferential weakening line L1, and the lower end is continuous with the inclined weakening line L2. The circumferential weakening line L1 is formed between the upper end of the cylindrical portion 4 and the locking ridge 4a, and the inclined weakening line L2 extends to the lower end 4d of the cylindrical portion 4.

An extrusion protrusion 12 is provided on the inner surface of the free end 11a. This projection 12 is
It gradually becomes thicker from the b side toward the free end 11a side, and its tip protrudes from the inner peripheral surface 4A of the cylindrical portion 4. The protrusion amount t is appropriately selected in consideration of the ease of picking of the knob 11 after plugging, the resistance at the time of plugging, and the like.

Next, the operation of this embodiment will be described.
A cap is supplied from a chute of a cap supply device to a capping machine (not shown). At this time, as shown in FIG. 1 and FIG. 2, since the tip of the free end portion 11 a of the knob 11 is located in the cutout window 10, the adjacent knobs 11 are positioned within the chute. No entanglement.
Therefore, the supply of the cap can be performed smoothly.

The cap 3 supplied to the tapping machine is pressed against the mouth 2 of the container 1 with a strong force, so that the locking ridge 4a of the cylindrical portion 4 is fitted into the engaging recess of the mouth 2. .

At this time, the extrusion protrusion 12 of the knob 11 is
As shown in FIG. 3, the knob 11 is pushed outward by the mouth 2, so that the free end 11 a of the knob 11 is
B protrudes by the protrusion amount t. Therefore, the tip of the free end 11 is in a state where a finger can be easily hooked.

When sorting and collecting after use of the container, if the knob 11 is pinched with a finger and pulled in the circumferential direction, the weakened lines L1 and L2 are torn and the locking ridges 4a are cut, so that the cap 3 is easily opened. Deviate from 2.

A second embodiment of the present invention will be described with reference to FIG. 4. The difference between this embodiment and the first embodiment is as follows. (1) The cutout window is omitted, a cut 21 is formed in the cylindrical portion 4 to form a tongue-shaped knob 21, and the knob 21 is separated from the tube 4 and made independent. (2) The extrusion protrusion is formed in a truncated conical or trapezoidal shape.

A third embodiment of the present invention will be described with reference to FIG. 5. The difference between this embodiment and the second embodiment is as follows. (1) A tongue-shaped knob 31 is formed by inserting a weakening line 30, for example, a thin portion or a perforation, into the cylindrical portion 4, so that the weakening line 30 is torn off when plugged. (2) The extrusion protrusion 32 is formed in a spherical shape.

The fourth embodiment of the present invention will be described with reference to FIG. 6. The difference between this embodiment and the first embodiment is as follows. That is, the protrusion 42 for pushing is the lower end 41 a of the tab 41.
From the top to the upper end 41b. When the protrusion 42 for extrusion is formed in this way, the inner surface of the protrusion becomes a tapered surface, so that the opening 2 can be easily inserted at the time of plugging.

[0024]

According to the present invention, since the protrusion for pushing is provided on the inner surface of the knob as described above, the knob does not protrude from the outer peripheral surface of the cylindrical portion before plugging. Therefore, unlike the conventional example, even if the cap flows in the chute of the cap supply device, the adjacent caps do not become entangled with each other, so that the chute is not clogged.

Also, at the time of tapping, the pushing projection is pressed by the mouth of the container, and the tip of the knob protrudes from the outer peripheral surface of the cylindrical portion. Therefore, at the time of sorting and collecting, the tab can be easily picked and pulled, so that the cap can be easily removed from the container.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view showing another state of FIG. 2;

FIG. 4 is an enlarged view showing a knob according to a second embodiment of the present invention.

FIG. 5 is an enlarged sectional view showing a knob according to a third embodiment of the present invention.

FIG. 6 is an enlarged sectional view showing a knob according to a fourth embodiment of the present invention.

[Explanation of symbols]

1 container 2 mouth portion 3 cap 4 cylinder portion 4A tubular section of the inner circumferential surface 4a stopping projections 10 cut window 11 the tab 11a free end 11b proximal portion 12 extruding protrusion L ₁ circumferential weakening line L ₂ inclined weakening line

Claims (8)

[Claims] A cylindrical portion fitted to the mouth of the container, a knob forming a part of the cylindrical portion and provided so as to protrude from the cylindrical portion; and a weakening line continuous with the knob. A separation / collection cap made of synthetic resin comprising: a separation / recovery cap made of synthetic resin, wherein an extrusion projection is provided on an inner surface of the knob. 2. The synthetic resin separating and collecting cap according to claim 1, wherein the knob has a free end and a base end. 3. The separating and collecting cap made of synthetic resin according to claim 2, wherein the free end is located in the cutout window. 4. The separation and collection cap made of synthetic resin according to claim 2, wherein the free end is partitioned by a cut. 5. The separating and collecting cap made of synthetic resin according to claim 2, wherein the free end is partitioned by a weakening line. 6. The separation and collection cap made of synthetic resin according to claim 1, wherein the protrusion for extrusion is formed on the tip side of the free end. 7. The extrusion projection according to claim 1, wherein the projection has a thickness gradually increasing from a base end toward a free end.
A separation and collection cap made of the synthetic resin described. 8. The separating and collecting cap made of synthetic resin according to claim 1, wherein the protrusion for extrusion gradually becomes thicker from the lower end to the upper end of the knob.