JP3471984B2 - Removable cap - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap that can be unplugged and molded from a synthetic resin or the like that is firmly fitted to various container ports, and particularly, the cap body can be very easily removed from the container port. Regarding the cap that can be.

[0002]

2. Description of the Related Art As is well known, in recent years, the contents of such as seasonings have been improved in drainage, foreign substances are prevented from entering, and the container mouth has been opened in response to a request for a single tap in the manufacturing process. A cap made of a synthetic resin that is tightly fitted is often used.

This conventional cap has an outer cylinder fitting portion that is in close contact with the container mouth, and a projection that engages with the projection of the container mouth is formed on the inner wall surface of the outer cylinder fitting portion. In general, the cap body is press-fitted from above the container opening with a single tap so that the cap body is in close contact with the container opening in a non-detachable state.

By the way, the container in which the cap is fitted in this way is generally made of a material different from that of the cap, such as glass or synthetic resin, and yet secures the virgin sealing property. From the purpose, the cap is attached to the container mouth so that it is difficult to remove, so
For example, when an empty container is collected and reused, this cap is a major factor that hinders the reuse of resources, such as hindering the cleaning work.

Therefore, the applicant of the present invention can easily remove the cap from the container opening when the container becomes empty, and can reuse the resource while ensuring the virgin sealing property. Has been proposed first (Actual Kaihei No. 4-118348).

As shown in FIGS. 24 and 25, this cap is a cap body 10 fitted into the container opening of the container 2.
And a cap portion 30 continuously connected to the upper portion of the cap body 10 via a hinge portion 11 so as to be freely inserted and removed, and a gripping piece 19 formed on the outer cylinder fitting portion 12 of the cap body 10. By gradually pulling the outer cylinder fitting portion 12 of the cap main body 10 into the thin wall portion 20.
Along with the cap body 10
Only the portion above the locking projection (not shown) formed on the inner peripheral surface of the outer cylinder fitting portion 12 remains so as to be fitted in the container mouth.

Since the cap previously proposed by the applicant is constructed as described above, when removing the cap from the container mouth, a fingertip is pulled on the lower edge of the outer cylinder fitting portion 12. The cap body 10 can be easily removed from the container opening by scraping and lifting it upward.

[0008]

However, in the above-mentioned cap proposed by the applicant of the present invention, by scratching the fingertip on the lower edge portion of the outer cylinder fitting portion 12 and lifting it up, the cap body is Since 10 is configured to be removed from the container mouth, there is a risk that the nail or finger may be injured by a weak person.

The present invention was devised in view of the present situation, and its object is to easily remove the cap from the container opening when the container is empty without damaging the nails or fingers. It is intended to provide a removable cap that can be removed.

[0010]

In order to achieve the above object, in a cap capable of being unplugged according to the present invention, an outer cylinder fitting portion fitted into a container opening, and the outer cylinder fitting portion. engaging projections on the inner peripheral surface is bulged form, a thin portion of the outer tube fitting portion in the circumferential direction formed along the grooves form a circumferential thin-walled portions
A block is formed at the terminal end of the thin-walled portion along the circumferential direction.
And the thin non-formed part
Then, by pulling the cut portion generated by breaking the thin portion outward to the thin non-formed portion ,
It is characterized in that the cap body is configured to be detached from the container opening.

According to the present invention, in order to facilitate the cutting of the thin portion, a grip piece is integrally extended outwardly at the outer cylinder fitting portion of the cap body, and a base portion of the grip piece is provided. To form the thin portion, or a notch is formed in the outer cylinder fitting portion of the cap body, and the thin portion is formed from the notch along the circumferential direction of the outer cylinder fitting portion. It is desirable to configure so that the portion is formed.

Further, according to the present invention, in order to reduce the operation force when the cap is removed from the container mouth, the engaging projection is provided with a notch, and the boundary between the thin portion and the thin non-forming portion is formed. It is preferable that the cap body is formed so as to be easily bent from the notch by forming the portion at the notch of the engaging protrusion.

In this case, the notch of the engaging projection is provided with a member protruding outward from the outer cylinder fitting portion of the cap body, for example, a hinge, a gripping piece or a finger hook portion of the cap. By avoiding the open position, it is possible to effectively prevent an accident that a finger or the like comes into contact and is injured during the pulling operation by the cutting piece.

Further, according to the present invention, in order to prevent the cutting piece from breaking from the outer cylinder fitting portion during the pulling operation by the cutting piece, the boundary between the thin portion and the non-thin portion is formed. It is desirable to reinforce the part by forming it thick.

According to the present invention, the work of removing the cap main body from the container opening can be safely performed by providing the inner peripheral surface of the cut piece with the non-slip means.

Further, according to the present invention, in order to prevent the cap body from being accidentally removed from the container opening before the container becomes empty, an erroneous removal prevention display is provided on the outer cylinder fitting portion. Is desirable.

In the present invention, the lid body for opening and closing the liquid pouring port of the cap body is removably connected through a hinge, or the lid body is detachable from the cap body. It is desirable to screw it onto the structure.

[0018]

Therefore, in the cap capable of being unplugged according to the present invention, when the cap body is removed from the container mouth, the cutting piece portion is outwardly moved to the boundary portion between the thin portion and the thin non-forming portion. After pulling, by pulling the cut piece upward, the cap body is bent and the engagement force of the engagement protrusion of the cap body with the container is weakened, so that the cap can be easily removed from the container opening. .

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings.

1 to 5 show an improved cap 1 capable of being unplugged according to the first embodiment of the present invention. The cap 1 according to this embodiment is made of a material such as glass or synthetic resin. A cap body 10 fitted into the container mouth of the container 2 formed in the shape of FIG. 2 and a lid body 3 which is removably connected to the upper part of the cap body 10 via a hinge portion 11.
0 and the cap body 10,
The hinge portion 11 and the lid body 30 are integrally formed of synthetic resin such as polyethylene.

The cap body 10 includes an outer cylinder fitting portion 12 fitted into the container mouth of the container 2, a cylindrical pouring portion 13 connected to an upper portion of the outer cylinder fitting portion 12, and the cylindrical pouring portion. A cutout film portion 15 formed on an inner bottom portion 14 of the portion 13, a substantially annular knob 16 continuously provided on an upper portion of the cutout film portion 15, and an inner tubular fitting continuously provided on a lower portion of the inner bottom portion 14. Joint part 17
An engaging projection 18 bulged on the inner peripheral surface of the outer cylinder fitting portion 12, and a gripping piece 19 integrally extending outward from the outer peripheral surface of the outer cylinder fitting portion 12. And this gripping piece 19
And a groove-shaped thin portion 20 formed from the base portion along the circumferential direction of the outer cylinder fitting portion 12.

The outer cylinder fitting portion 12 is fitted on the outer peripheral surface of the container opening, and the inner cylinder fitting portion 1 is formed on the inner peripheral surface of the container opening.
7 is inserted. That is, the container mouth of the container 2 is fitted between the outer cylinder fitting portion 12 and the inner cylinder fitting portion 17, and the cap 1 is unprepared from the container mouth of the container 2 by the engaging protrusion 18. It is configured to be tightly fitted and locked so as not to fall off, and to maintain the virgin sealing property.

The outer surface of the outer cylinder fitting portion 12 has a
Although it is not shown in the figure, it is marked with a mistake prevention indicator that means "Please do not pull until the cap is empty and the cap is removed." It is desirable to do.

The engaging projection 18 is formed on the outer cylinder fitting portion 12
Notches 24 are formed along the inner circumferential direction at every required interval (every 90 degrees in this embodiment). In the present invention, the notch 24 of the engaging projection 18 is not necessarily 90
It is not necessary to form each time, and it is preferable that one or more is formed within the range of 90 to 270 degrees from the base of the gripping piece 19, or the engaging projection 18 is formed in a dot shape. It may be formed by projecting.

Further, as is clear from FIG. 5, the notch 24 is formed so as to avoid the position where the hinge 11, the grip piece 19 and the finger hook 32 of the cap 30 are provided in a protruding manner. Cutting piece 25 cut along the thin portion 20
It is possible to effectively prevent an accident in which a finger or the like comes into contact with the person when the pulling operation is performed and the injury occurs. It should be noted that it is desirable to form a shallow concave-convex groove or protrusion on the back surface side of the cut piece 25 as a slip stopper when pulling the cut piece 25.

On the other hand, the cylindrical pouring portion 13 is the outer cylinder fitting portion 1
The upper end portion 33 is formed to be continuous with the upper portion of the second member 2, and the upper end portion 33 is slightly outwardly expanded in diameter to improve the liquid draining effect and the liquid leaking effect.

As shown in FIGS. 3 and 5, the cut-off film portion 15 is formed in a thin shape on the inner bottom portion 14 of the cylindrical pouring portion 13, and the knob 16 formed in a ring shape is directed upward. It is configured so that it can be easily torn off by pulling it on.

The gripping piece 19 is formed in a substantially L shape in plan view, and its base is connected to the outer cylinder fitting portion 12. In addition, in FIG. 4 and FIG.
9 when not in use, the middle portion of the gripping piece 19 and the outer cylinder fitting portion 1
2 is a connecting piece for connecting and fixing with 2, and the connecting piece 21 is configured so that the connected state is easily released when the gripping piece 19 is pulled outside the outer cylinder fitting portion 12. There is.

As shown in FIG. 5, the thin portion 20 is located on the inner peripheral wall surface of the outer cylinder fitting portion 12 and below the mounting portion of the engaging projection 18 , that is, this embodiment. In the example
Is a position within a range of 90 degrees to 270 degrees from the base of the grip piece 19.
The thin-walled portion 20 is formed within a range of 90 degrees to 270 degrees from the connecting portion with the base portion of the gripping piece 19 while the cross-sectional shape thereof is formed in a substantially U shape. The thin non-formation portion 26 is formed along the inner circumferential direction.

The cross-sectional shape of the thin wall portion 20 formed on the inner peripheral wall surface of the outer cylinder fitting portion 12 in this manner is, for example, formed into a substantially U-shape instead of a substantially V-shape, and the engaging projections are formed. The cap 1 is formed at a position lower than the position where the cap 18 is provided.
When the container mouth of the container 2 is tapped, the thin portion 20
This is because it was taken into consideration that it would not break due to the tapping pressure. Therefore, the cross-sectional shape of the thin-walled portion 20 is not limited to the V-shaped cross-section as long as the thin-walled portion 20 does not break due to the plugging pressure when it is plugged once.

Further, the thin portion 20 and the non-thin portion 26 are formed.
Boundary A (from the base of the gripping piece 19 in the illustrated embodiment
The 90-degree position. However, within the range of 90 degrees to 270 degrees
If so, it indicates the boundary position, and in FIG.
As an example, add (A) to the positions of 180 degrees and 270 degrees
Indicated. ) Is formed so as to correspond to the portion where the cutout portion 24 of the engagement projection 18 is formed, so that the cap body 10 is easily bent.

Further, the boundary A is formed by the cutting piece 25.
It suffices that it has a strength that does not break when it is pulled upward, and in order to retain this strength more reliably, although not particularly shown, the inside of the boundary A is formed thick to reinforce. It is desirable to do.

On the other hand, the lid body 30, which is continuously provided through the hinge portion 11 so as to be able to be fitted into and removed from it, is formed into a substantially inverted concave cross section.
At the time of closing the lid, the ceiling portion is pressed against the upper end portion of the tubular pouring portion 13 so that the contents do not leak even if the container 2 falls down.

Next, the cap 1 which is constructed as described above and which can be unplugged is fitted into the container mouth of the container 2, and when the contents of the container 2 are empty, the cap 1 is removed from the container mouth. The case of removal will be described with reference to FIGS. 6 to 9.

First, in the mounted state of the cap 1 shown in FIG. 1, when the gripping piece 19 is pulled up and gradually pulled outward, as shown in FIG.
The outer cylinder fitting portion 12 of the
When broken to the position (90 degrees from the base of the gripping piece 19 in the illustrated example), the cutting piece 25 is generated, and the state shown in FIGS. 7 and 8 is obtained.

When the cutting piece 25 is pulled up from this state, as shown in FIG. 9, the cap body 10 is bent to weaken the engaging force of the engaging projection 18 with the container 2, so that a small force is applied. The engaged state can be easily released, and the cap 1 can be easily removed from the container opening.

10 to 14 show a cap 1A according to the second embodiment of the present invention. In this embodiment, the cap body 10A is not connected by a hinge but the cap body 10A. Other configurations and operations are the same as those in the first embodiment except that the lid and the lid body 30A are detachably attached by a screw type. Therefore, the same reference numerals as those in the first embodiment are used in the drawings. Detailed description is omitted here, and the first
Configurations and parts different from those of the embodiment will be described by adding "A" after the reference numerals used in the first embodiment.

That is, in this embodiment, the male screw portion 35 is engraved on the outer peripheral surface of the connecting portion 34 between the outer cylinder fitting portion 12A of the cap body 10A and the tubular pouring portion 13, and the lid 3 is formed.
0A is engraved with a female screw portion 36 on the inner peripheral surface on the side of the opening end, and the lid body 30A is rotated in one direction so that the female screw portion 36 of the lid body 30A is replaced with the male screw portion 35 of the cap body 10A. The lid 30A is screwed to the upper end of the tubular pouring portion 13 by pressure, so that the contents are not leaked out even if the container 2 is collapsed.

Also, by rotating the lid body 30A in the opposite direction, the female thread portion 36 of the lid body 30A and the male thread portion 35 of the cap body 10A are released from the screwed state, whereby the cylindrical pouring is performed. The part 13 is opened so that the contents in the container 2 can be poured.

Next, the cap 1A which is constructed as described above and which can be unplugged is fitted into the container mouth of the container 2, and when the contents of the container 2 are empty, the cap 1A is removed from the container mouth. The case of removal will be described with reference to FIGS.

First, in the mounted state of the cap 1A shown in FIG. 10, when the gripping piece 19A is raised and gradually pulled in the outer peripheral direction, as shown in FIG. 15, the outer cylinder fitting portion 12A of the cap body 10A is moved. Along the thin portion 20, the boundary portion A (in the illustrated example, the boundary portion 9A from the base portion of the grip portion 19A
When it breaks to the 0 degree position, a cutting piece 25A is generated,
The state shown in FIGS. 16 and 17 is obtained.

When the cutting piece 25A is pulled up from this state, as shown in FIG.
Since 0A is bent and the engagement force of the engagement protrusion 18A to the container 2 is weakened, the engagement state can be easily released with a small force, and the cap 1A can be easily removed from the container opening. In this case, for example, by removing the lid body 30 from the cap body 10A in advance, the cap 1A can be easily removed from the container opening even if the upward pulling force of the cutting piece 25A is small.

19 to 23 show a cap 1B according to a third embodiment of the present invention. In this embodiment, the cap body 10B is not connected by a hinge but the cap body 10B. The lid 30B and the lid 30B are screw-typed so as to be detachable, and as in the first and second embodiments,
Instead of projecting the gripping pieces 19, 19A outside the outer cylinder fitting part 12, a gripping piece part 19B having the same function as the gripping pieces 19, 19A is formed in the outer cylinder fitting part 12B. Other than that, the other configurations and operations are the same as those of the first embodiment, and therefore the same reference numerals as those of the first embodiment are attached to the drawings, and the detailed description thereof will be omitted here, and Configurations / parts different from the examples will be described by adding "B" after the reference numerals used in the first embodiment. Of course, new reference numerals will be given to newly-described configurations and parts.

That is, in this embodiment, the male screw portion 35 is engraved on the outer peripheral surface of the connecting portion 34 between the outer cylinder fitting portion 12B of the cap body 10B and the cylindrical pouring portion 13, and the lid 3 is formed.
0B is engraved with a female screw portion 36 on the inner peripheral surface on the side of the opening end, and the lid body 30B is rotated in one direction so that the female screw portion 36 of the lid body 30B is replaced with the male screw portion 35 of the cap body 10B. The lid 30B is screwed onto the upper end of the cylindrical pouring portion 13 by pressure, so that the contents are not leaked even if the container 2 is collapsed.

Further, by rotating the lid body 30B in the opposite direction to release the screwed state of the female screw portion 36 of the lid body 30B and the male screw portion 35 of the cap body 10B, the cylindrical pouring is performed. The part 13 is opened so that the contents in the container 2 can be poured.

On the other hand, in this embodiment, unlike the first and second embodiments, the gripping piece is not projected on the outer side of the outer cylinder fitting portion, but is similar to the same portion where the gripping piece is formed. The grip piece portion 19B having the function of is cut and formed.

That is, the gripping piece portion 19B is formed by cutting a front shape into an inverted rectangular shape, and its base is connected to the outer cylinder fitting portion 12B.

By forming the holding piece portion 19B by cutting in this way, as compared with the cap 1 of the first and second embodiments,
In combination with the abolition of the hinge or because the gripping piece does not project outward, there is no risk of accidentally being scratched by the projecting portion when the cap 1B is operated, and safety can be improved. Also, the moldability can be improved. Of course,
The gripping piece portion 19B secures the virgin sealing property of the cap 1B and can surely cut and raise with a small force, and when the cap 1B is used,
It is necessary to take measures to prevent the gripping piece 19B from being cut and raised.

For example, although not particularly shown, a small projection for cutting and raising is formed at the tip of the gripping piece portion 19B by bulging to prevent the cut portion from being easily broken, or the gripping piece. The tip portion of the portion 19B is formed in a thin shape, the cut portions are connected to each other so as not to be exposed to the outside, and the grip portion 19B is easily cut and raised by breaking the thin portion with a claw. It is desirable to be configured so that it can.

Next, the cap 1B which is constructed as described above and can be plugged is fitted into the container mouth of the container 2, and when the contents of the container 2 are empty, the cap 1B is removed from the container mouth. The case of removal will be described with reference to FIGS. 21 to 23.

First, in the mounted state of the cap 1B shown in FIG. 19, when the grip piece portion 19B is raised and gradually pulled in the outer peripheral direction, as shown in FIG. 21, the outer cylinder fitting portion 12B of the cap body 10B. When the sheet breaks along the thin portion 20 up to the boundary portion A (the position of 90 degrees from the base of the gripping piece portion 19B in the illustrated example), a cutting piece 25B is generated and the state shown in FIGS. 22 and 23 is obtained.

When the cutting piece 25B is pulled up from this state, as shown in FIG.
Since 0B is bent and the engagement force of the engagement protrusion 18B with respect to the container 2 is weakened, the above engagement state can be easily released with a small force, and the cap 1B can be easily removed from the container opening. In this case, for example, by removing the lid body 30 from the cap body 10B in advance, the cap 1B can be easily removed from the container opening even if the upward pulling force of the cutting piece 25B is small. still,
Reference numeral 37 in the figure denotes a through hole portion formed in the outer cylinder fitting portion 12B when the grip piece portion 19B is raised.

Further, in each of the above embodiments, the case where the cap 1 is configured as shown in the drawings has been described as an example, but the present invention is not limited to this and is applicable to other shapes. In addition to the cap made of synthetic resin, the present invention can be applied to a cap made of a metal material.

In each of the above embodiments, the thin portion 20 is
The case where the outer cylinder fitting portion 12 is formed on the inner peripheral wall surface has been described as an example. However, in the present invention, for example, it is formed on the locking protrusion 18 or the outer circumference of the outer cylinder fitting portion 12. It can also be formed on the wall surface at the position where the locking projection 18 is formed or at a position above or below the position.

[0055]

As described above, in the cap which can be unplugged according to the present invention, when the cap body is detached from the container mouth, the thin portion is pulled outward and the thin portion and the thin portion are removed. By pulling the cut piece generated by breaking up to the boundary with the forming part upward, it is extremely easy to remove the cap from the container mouth when the container is empty without damaging the nails and fingers. As a result, when the cap is attached, the virgin sealing property can be sufficiently ensured, and when the container becomes empty, the cap made of a different material can be removed from the container, so that the reusability of resources is improved. It has an excellent effect that it can be greatly improved to save resources.

Further, according to the present invention, the grasping piece is integrally extended outward in the outer cylinder fitting portion of the cap body, and the thin portion is formed from the base portion of the grasping piece. Or a notch is formed in the outer cylinder fitting part of the cap body, and a thin portion is formed from the notch along the circumferential direction of the outer cylinder fitting part. In this case, the thin portion can be easily cut with a small force.

Further, according to the present invention, the notch is formed in the engaging protrusion, and the boundary between the thin portion and the non-thin portion is formed in the notch of the engaging protrusion. Since the cap body can be bent from the cut portion, the operation force when removing the cap from the container opening can be significantly reduced.

In this case, the notch of the engaging projection is provided with a member protruding outward from the outer cylinder fitting portion of the cap body, such as a hinge, a gripping piece or a finger hook portion of the cap. By avoiding the open position, it is possible to effectively prevent an accident that a finger or the like comes into contact and is injured during the pulling operation by the cutting piece.

In addition, according to the present invention, the boundary between the thin-walled portion and the non-thin-walled portion is formed thick to reinforce, so that when the cutting operation is performed, the cutting piece is It is possible to prevent the outer cylinder fitting portion from breaking.

Further, according to the present invention, the work of removing the cap body from the container opening can be safely performed by providing the inner peripheral surface of the cut piece with the slip preventing means.

Further, according to the present invention, the outer cylinder fitting portion is provided with the erroneous removal prevention display, which effectively prevents the cap body from being accidentally removed from the container opening before the container becomes empty. can do.

In the present invention, the cap body and the lid body are removably connected to each other via the hinge, so that the spout can be easily opened and closed.
Since the cap body and the lid body are detachably formed by a screw method and the gripping piece portion is formed on the outer cylinder fitting portion by molding, the outer peripheral surfaces of the cap body and the lid body can be formed flat. In addition, it is possible to effectively prevent injuries, improve safety and productivity, and have many excellent effects.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a cap according to a first embodiment of the present invention is plugged into a container opening.

FIG. 2 is a front view of the cap.

FIG. 3 is a vertical sectional view of the cap.

FIG. 4 is a plan view of the cap.

FIG. 5 is a bottom view of the cap.

FIG. 6 is a perspective view showing an initial state of a process of removing the cap from the container opening.

FIG. 7 is a perspective view showing an intermediate state of a process of removing the cap from the container opening.

FIG. 8 is a front view showing a state in which the thin portion of the cap is cut to a boundary portion.

FIG. 9 is a cross-sectional view showing a state where a thin piece of the cap is cut to a boundary to form a cut piece, and the cut piece is pulled upward to remove the cap body from the container opening.

FIG. 10 is a perspective view showing a state in which the cap according to the second embodiment of the present invention is plugged into the container opening.

FIG. 11 is a front view of the cap.

FIG. 12 is a vertical sectional view of the cap.

FIG. 13 is a plan view of the cap.

FIG. 14 is a bottom view of the cap.

FIG. 15 is a perspective view showing an initial state of a step of removing the cap from the container opening.

FIG. 16 is a perspective view showing an intermediate state of a process of removing the cap from the container opening.

FIG. 17 is a front view showing a state in which the thin portion of the cap is cut to the boundary portion.

FIG. 18 is a cross-sectional view showing a state where a thin portion of the cap is cut to a boundary portion to form a cut piece, and the cut piece is pulled upward to remove the cap main body from the container opening.

FIG. 19 is a perspective view showing a state in which the cap according to the third embodiment of the present invention is plugged into the container opening.

FIG. 20 is a front view of the cap.

FIG. 21 is a perspective view showing an initial state of a step of removing the cap from the container opening.

FIG. 22 is a perspective view showing an intermediate state of the step of removing the cap from the container opening.

FIG. 23 is a front view showing a state in which the thin portion of the cap is cut to the boundary portion.

FIG. 24 is a perspective view showing a state in the middle of cutting the cap previously proposed by the present applicant along the thin portion.

FIG. 25 is a perspective view showing a state in which the lower portion is completely removed from the thin portion of the cap.

[Explanation of symbols]

1,1A, 1B cap 2 containers 10,10A, 10B Cap body 12, 12A, 12B Outer cylinder fitting part 19, 19A gripping piece 19B gripping piece 20 Thin part 24 notch 25,25A, 25B cut pieces 26 Thin non-formed part A. Boundary between thin part and non-thin part

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65D 41/32 B65D 39/00 B65D 47/08 B67B 1/00

Claims (10)

(57) [Claims] 1. An outer cylinder fitting part fitted into a container mouth, an engagement protrusion bulged on an inner peripheral surface of the outer cylinder fitting part, and a circumferential direction of the outer cylinder fitting part. A groove-shaped thin portion formed along the
Is formed at the circumferential end of the thin-walled portion in the circumferential direction of the thin-walled portion.
Along with the thin non-formed part that blocks fracture along
Tsu constitute a flop body, thin-walled non-to pull the thin-walled portion outward
A cap capable of being unplugged, characterized in that the cap body is configured to be detached from a container opening by pulling a cut piece generated by breaking to a forming portion upward. 2. A grip piece is integrally extended outwardly at an outer cylinder fitting portion of the cap body, and the thin portion is formed from a base portion of the grip piece. Item 1
The cap that can be unplugged as described in. 3. A cut portion is formed in the outer cylinder fitting portion of the cap body, and a thin portion is formed from the cut portion along the circumferential direction of the outer cylinder fitting portion. The removable cap according to claim 1. 4. A notch is formed in the engaging protrusion, and a boundary between the thin portion and the thin non-forming portion is formed in the notch of the engaging protrusion. The cap capable of being unplugged according to any one of claims 1 to 3. 5. The cutout portion of the engagement protrusion is formed so as to avoid a position of a member protruding outward from an outer cylinder fitting portion of the cap body. Cap that can be removed. 6. The removable cap according to claim 1, wherein a boundary between the thin portion and the non-thin portion is formed thick. 7. The anti-slip means is provided on the inner peripheral surface of the cut piece, as claimed in any one of claims 1 to 6.
The removable cap according to any one of 1. 8. The cap capable of being unplugged according to claim 1, wherein an erroneous removal prevention display is provided on the outer cylinder fitting portion. 9. The cap can be unplugged according to claim 1, wherein a lid is continuously connected to an upper portion of the cap body via a hinge so that the lid can be inserted and removed. cap. 10. The cap capable of being unplugged according to claim 1, wherein a lid is detachably screwed to an upper portion of the cap body.