JPH08282710A - Resealable unsealing device for container - Google Patents

Abstract

PURPOSE: To execute unsealing work without anxiety with fear of spillage of liquid at unsealing eliminated. CONSTITUTION: An expected opening part 16 is formed at a top wall 13 of a container. An unsealing device 12 is composed of a socket 31 having a circumferential wall 41 fixed at its lower end to the outside of the expected opening part 16 and a plug 32 having a circumferential wall 51 to be detachably fitted to the socket circumferential wall 41 and a closing wall 52 provided across the inside of the circumferential wall 51. A cylindrical cutter 53 having cutting edges 57 at its lower end for forming the opening is installed either to the socket 31 or the plug 32. The closing wall 52 is made of an elastic material in an arch-like section, and the sectional shape thereof is changeable within a range from the upward-looking arch to the downward-looking arch. The cutter 53 is formed integral with the closing wall 52 with its upper end connected to the underside of the closing wall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and resealing a paper beverage container, for example.

[0002]

2. Description of the Related Art A conventional device of this type is provided with a container and an opening device, and an opening formation portion is formed on a top wall of the container, and the opening device has a lower end fixed to the outside of the opening formation portion. A socket having a peripheral wall, a plug having a peripheral wall removably fitted in the socket and a closing wall traversing the peripheral wall, and an opening that is vertically movable in the socket and has a cutting edge at the lower end. It is known that it is composed of a forming cylindrical cutter, and when opening, the plug is removed from the socket and the cutter is pushed in to cut and remove the opening formation planned portion to open the opening.

[0003]

In the above device, when the container is opened, the filling liquid jumps out from the formed opening,
The splashed filling liquid may spill from the socket.

An object of the present invention is to solve the above problems,
The present invention relates to a resealable container opening device that can be opened with peace of mind without worrying that the filling liquid will spill when opening.

[0005]

A resealable container opening device according to the present invention comprises a container and an opening device,
An opening forming portion is formed on the top wall of the container, and the unsealing tool has a socket having a peripheral wall whose lower end is fixed to the outside of the opening forming portion, and a peripheral wall and a peripheral wall that are detachably fitted into the socket peripheral wall. In a resealable container opening device comprising a plug having a transverse closing wall and a socket or a tubular cutter for accommodating the plug and having a cutting edge at a lower end thereof, the closing wall is made of an elastic material. It is formed in the shape of an arch in cross section and is deformable in the range from the state of the upward arch to the state of the downward arch, and the cutter is formed integrally with the upper surface of the cutter by connecting to the lower surface of the closing wall. It is characterized by being present.

Further, an unsealing prevention ring is provided at the upper end of the peripheral wall of the socket so as to be continuous through an annular thin portion for cutting, the thin portion for longitudinal cutting is provided on the ring, and the knob is provided close to one side of the thin portion. Is provided, the stopper is provided on the outer surface of the plug peripheral wall, and the cutting blade of the cutter cannot reach the portion where the opening is to be formed when the stopper is in contact with the upper end of the ring. When the stopper is in contact with the upper end, it is preferable that the cutting blade of the cutter can reach the portion where the opening is to be formed.

Further, an upper annular fitting groove is provided on the inner surface of the ring, a lower annular fitting groove is provided on the inner surface of the socket peripheral wall, and an annular fitting projection is provided on the outer surface of the plug peripheral wall, sandwiching the thin portion. When the stopper is in contact with the upper end of the socket, the fitting protrusion is fitted in the upper fitting groove, and when the stopper is in contact with the upper end of the socket peripheral wall after ring cutting, it is fitted in the lower fitting groove. It may be designed so that the ridges can be fitted.

Further, a stopper is provided on the outer surface of the peripheral wall of the plug, and a hanging unsealing prevention ring is provided in series with the tip of the stopper. An annular thin portion for cutting is provided at the boundary between the stopper and the ring for longitudinal cutting. A thin portion is provided, and a knob is provided close to one side of the thin portion, and the cutting blade of the cutter cannot reach the opening formation planned portion when the stopper is in contact with the upper end of the ring. However, it is preferable that the cutting blade of the cutter can reach the portion where the opening is to be formed when the stopper is in contact with the upper end of the socket peripheral wall after the ring is cut.

Further, a female screw is provided on the inner surface of the socket peripheral wall, a male screw screwed into the female screw is provided on the outer surface of the plug peripheral wall, and an outward engaging portion is provided at an upper end portion of the outer surface of the socket peripheral wall. A skirt is provided so as to connect to the lower end of the ring so as to cover the portion, an annular easy-breaking portion is provided at the boundary between the ring and the skirt, and an inward engaging portion is provided on the inner surface of the skirt, allowing the plug to rotate freely in the screwing direction. However, both engaging portions may be engaged so as to restrain rotation in the opposite direction, and the easily breakable portion may be broken by rotation in the direction opposite to the screwing direction of the plug. .

Further, the upper end level of the closing wall in the upward arch shape may be lower than the upper end level of the plug peripheral wall.

A part without a cutting edge may be provided at a part of the lower end of the cutter.

[0012]

In the resealable container opening device according to the present invention, the closing wall is made of an elastic material and has an arcuate cross section, and is deformable in a range from an upward arched state to a downward arched state. And the cutter is connected to the lower surface of the closing wall at its upper end and is integrally formed with the lower surface of the closing wall, so that the pressing of the closing wall deforms the closing wall from the upward arched state to the downward arched state to lower the cutter. Then, the part where the opening is to be formed is cut by the cutting blade of the cutter.

Further, an unsealing prevention ring is provided on the upper end of the peripheral wall of the socket so as to be continuous through an annular thin portion for cutting, the thin portion for longitudinal cutting is provided on the ring, and a knob is provided close to one side of the thin portion. Is provided, the stopper is provided on the outer surface of the plug peripheral wall, and the cutting blade of the cutter cannot reach the portion where the opening is to be formed when the stopper is in contact with the upper end of the ring. If the cutting blade of the cutter can reach the opening formation planned portion while the stopper is in contact with the upper end, the opening formation planned portion cannot be cut until after the ring is cut.

Further, an upper annular fitting groove is provided on the inner surface of the ring, a lower annular fitting groove is provided on the inner surface of the socket peripheral wall, and an annular fitting protrusion is provided on the outer surface of the plug peripheral wall with the thin portion interposed therebetween. When the stopper is in contact with the upper end of the socket, the fitting protrusion is fitted in the upper fitting groove, and when the stopper is in contact with the upper end of the socket peripheral wall after ring cutting, it is fitted in the lower fitting groove. When the mating ridge is fitted, the fitting property between the socket and the plug is good regardless of before and after ring cutting.

Furthermore, a stopper is provided on the outer surface of the peripheral wall of the plug, and a hanging unsealing prevention ring is provided in series with the tip of the stopper. An annular thin portion for cutting is provided at the boundary between the stopper and the ring, and the ring is longitudinally cut. A thin portion is provided, and a knob is provided close to one side of the thin portion, and the cutting blade of the cutter cannot reach the opening formation planned portion when the stopper is in contact with the upper end of the ring. However, even if the cutting edge of the cutter can reach the opening formation planned part in the state where the stopper is in contact with the upper end of the socket peripheral wall after cutting the ring, the opening formation planned part is cut unless it is after cutting the ring. Can not do it.

Further, a female screw is provided on the inner surface of the socket peripheral wall, a male screw screwed into the female screw is provided on the outer surface of the plug peripheral wall, and an outward engaging portion is provided at an upper end portion of the outer surface of the socket peripheral wall. A skirt is provided so as to connect to the lower end of the ring so as to cover the portion, an annular easy-breaking portion is provided at the boundary between the ring and the skirt, and an inward engaging portion is provided on the inner surface of the skirt, allowing the plug to rotate freely in the screwing direction. However, both engaging parts are engaged so as to restrain the rotation in the opposite direction, and the easily breakable part is broken by the rotation in the direction opposite to the screwing direction of the plug, The ring can be cut only after the easily breakable portion is broken.

Further, when the upper end level of the closing wall in the upward arch shape is set to be equal to or lower than the upper end level of the plug peripheral wall, the plug peripheral wall is prevented from inadvertently impacting the closing wall.

Further, if a part without a cutting edge is provided at a part of the lower end of the cutter, the portion to be formed with the opening is not cut over the entire circumference, and uncut portions are left, so that the portion to be formed with the cut opening is to be formed. There is no need to worry about parts falling into the container.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

In the following description, front and rear are the front side shown by arrow A in FIG. 1 and the opposite side is rear, and left and right are the left and right sides when viewed from the front. And <First Embodiment> FIGS. 1 to 9 show a container opening device according to a first embodiment.

The container opening device comprises a container 11 and an opening tool 12.

The container 11 is formed by bending and assembling a container material into a rectangular parallelepiped shape, and has long rectangular flat top walls 13 on the left and right.

The top wall 13 has a lateral seal portion 14 extending in the left-right direction.
And a vertical seal portion 15 extending in the front-rear direction is provided. In the front left corner of the top wall 13, the area defined by the horizontal seal 14 and the vertical seal 15 is where the opening is to be formed.
16 are provided. The opening formation scheduled portion 16 is a portion corresponding to a circle, and extends in the front-back direction between a pair of left and right arc-shaped portions 17 that are opposed to each other with the center of the opening formation scheduled portion 16 interposed therebetween. Further, it is composed of a bridge-shaped portion 18 whose both ends are arranged outside the opening formation planned portion 16. Perforations 19 are provided at both ends of the bridge portion 18.

As shown in detail in FIG. 3, the container material is composed of a paper-based laminate, and the outer polyethylene layer 21, the paper layer 22, the middle polyethylene layer 23, the aluminum foil layer 24, and the inner foil layer are sequentially arranged from the outside of the container. It is composed of a polyethylene layer 25. In the arc-shaped portion 17 of the opening formation planned portion 16, the paper layer 22
Are removed, but the paper layer 22 remains in the bridge-shaped portion 18.

The unsealing tool 12 is formed by integrally molding polyethylene resin, and has a socket 31 and a plug 32.
Consists of.

The socket 31 is connected to a vertical cylindrical peripheral wall 41 having a diameter slightly larger than the diameter of the opening forming portion 16 and a lower end of the peripheral wall 41 and is fixed to the outside of the opening forming portion 16 on the upper surface of the container top wall 13. It has a bell-shaped flange 42 and an opening prevention ring 44 which is continuous with the upper end of the peripheral wall 41 via an annular thin portion 43 for cutting.

An annular upper fitting groove 45 is formed on the inner surface of the ring 44 with the thin portion 43 interposed therebetween, and the socket peripheral wall 41 immediately below the ring 44.
An annular lower fitting groove 46 is provided on each inner surface.
The distance d1 from the upper edge of the ring 44 to the upper fitting groove 45 and the distance d2 from the upper edge of the socket peripheral wall 41 to the lower fitting groove 46 are equal (see FIG. 3).

At the right end of the ring 44, a vertical ring thin section 47 for vertical cutting is provided. An L-shaped knob 48 is provided adjacent to the thin portion 47 and extends rightward from the rear side of the thin portion 47 and is bent rearward. As shown in detail in FIGS. 4 and 5, the thin-walled portion 47 is formed in an inclined shape so as to be the thinnest at the base of the knob 48. A cutting promoting through hole 49 is formed in substantially the lower half of the thin portion 47.

The plug 32 has a peripheral wall 51 having a lower end partially fitted into the socket peripheral wall 41 through a ring 44, and an upward arch-shaped cross section which crosses the middle of the height in the peripheral wall 51. It comprises a closing wall 52 and a hanging cylindrical cutter 53 which is continuous with the lower surface of the closing wall 52 and is integrally provided with the closing wall 52 and has a diameter slightly smaller than the diameter of the opening formation scheduled portion 16.

At the upper end of the peripheral wall 51, there is provided a laterally extending stopper 54 which is brought into contact with the upper edge of the ring 44.
The stopper 54 is connected to the right end of the flange 42 at the right end by a hinge 55. A fitting protrusion 56 fitted in the upper fitting groove 45 is provided in the middle of the outer surface of the peripheral wall 51. The lower edge of the cutter 53 is provided with a saw-toothed cutting edge 57 over substantially the entire circumference, but the cutting edge-less portion 58 is provided only at a part of the front end of the lower edge of the cutter 53.

In FIG. 2, the closed wall 52 is shown in the shape of an upward arch, but in this state,
The upper surface of the center of the closing wall 52 and the upper surface of the stopper 54 are flush with each other. The closing wall 52 can be elastically deformed from the upward arched state to the downward arched state of the closing wall 52 as shown by the chain line in FIG. The cutter 53 is lowered due to the elastic deformation of the closing wall 52, and the lowering stroke at this time is f, and from the lower edge of the cutter 53 to the lower surface of the opening formation planned portion 16 when the closing wall 52 has an upward arch shape. Distance to L
Then, L ≧ f. Therefore, the socket peripheral wall 41
Even if the cutter 53 is lowered in a state where the ring 44 is connected to the upper edge, the cutting edge 57 of the cutter 53 cannot reach the opening formation scheduled portion 16. If the height of the ring 44 is h, then L-
h <f. When the cutter 53 is lowered after removing the ring 44 from the upper edge of the socket peripheral wall 41, the cutting edge 57 of the cutter 53 is removed.
Can reach the opening formation scheduled portion 16.

Next, the procedure for opening the container will be described below with reference to FIGS.

First, as shown in FIG. 6, the thin portion 43 is cut by pulling the knob 48, and the ring 44 is attached to the socket peripheral wall.
41 Remove from top. Then, as shown in FIG. 7, the plug 32 is pushed into the socket 31, and the fitting protrusion 56 is inserted into the lower fitting groove 46.
Is fitted. In this way, as shown in FIG. 8, when the central portion of the closing wall 52 is pushed down to lower the cutter 53, the cutting blade 57 cuts the opening formation scheduled portion 16 and the opening formation scheduled portion 16 is opened. . After opening, as shown in Figure 9, socket
Removing the plug 32 from 31 opens the container. When the plug 32 is fitted into the socket 31, it is resealed.

When cutting the opening formation planned portion 16, the cutting is performed along the outer circumference of the opening formation planned portion 16, but the portion corresponding to the cutting edgeless portion 58 is not cut. Therefore, the portion cut by the uncut portion of the opening formation scheduled portion 16 hangs down in the state of being suspended in the container 11, but does not drop.

<Second Embodiment> FIGS. 10 to 17 show a second embodiment.
The container opening device according to US Pat.

The container opening device according to the second embodiment is the same as the first embodiment.
Similarly, the container 61 and the opening device 62 are included.

The container 61 is made of the same container material as that of the first embodiment (see FIG. 13) and has a gable roof type top wall 63.

An opening forming portion 64 is provided on one of the sloping roof panels of the top wall 63. The opening formation planned portion 64 is a circular hole 65 formed in the roof panel, and the aluminum foil sheet 66.
Is coated with.

The opening device 62 comprises a socket 71 and a plug 72. The socket 71 and the plug 72 are separate bodies,
Both are made of polyethylene resin.

The socket 71 is connected to a vertical cylindrical peripheral wall 81 having a diameter slightly larger than that of the opening formation scheduled portion 64, and is connected to the lower end of the peripheral wall 81 and fixed to the outside of the opening formation scheduled portion 64 on the upper surface of the container top wall 63. The annular lower flange 82 and the annular upper flange 83 connected to the upper end of the peripheral wall 81. Surrounding wall
A female screw portion 84 is provided in the middle of the height of the inner surface 81.
A downwardly tapered inner flange 85 is provided at the lower end of the inner surface of the peripheral wall 81. On the outer surface of the upper flange 83, a counterclockwise rotating outward engaging portion 86 is provided.

The plug 72 has a peripheral wall 91 fitted into the socket peripheral wall 81, an upwardly arched closing wall 92 in cross section which crosses the upper end of the peripheral wall 91, and a plug 72 connected to the lower surface of the closing wall 92. The hanging cylinder cutter 93 is integrally provided and has a diameter slightly smaller than the diameter of the opening formation scheduled portion 64.

The peripheral wall 91 comprises a lower small-diameter thin portion 94 and an upper large-diameter thick portion 95. On the outer surface of the thin portion 94, a male screw portion 96 screwed into the female screw portion 84 is provided. A thicker portion 95 is provided with a horizontal overhanging annular stopper 97 at a portion slightly higher than the middle of the outer surface height, and a drooping unsealing prevention ring 98 in contact with the tip of the stopper 97 makes its lower end abut against the upper surface of the upper flange 83. It is provided to let you. Further, the inverted L-shaped skirt 99 in cross section is connected to the lower end of the ring 98 and the upper flange 83 is formed.
It is provided so as to cover the outer surface. An annular thin wall portion 101 for cutting is provided at the boundary between the stopper 97 and the ring 98. The ring 98 is provided with a thin portion 102 for vertical cutting of the vertical ring. An arcuate knob 103 is provided on one side of the thin portion 102 close to the thin portion 102. A large number of arcuate slits 104 are intermittently provided at the boundary between the ring 98 and the skirt 99. Slit 104 and adjacent slit 104
An annular easily breakable portion 105 is formed by the portion between them. The inner surface of the skirt 98 is provided with an inward engaging portion 106 engaged with the outward engaging portion 86. A cutting edge 107 and a non-cutting edge portion 108 are provided at the lower end of the cutter 93.

Referring to FIG. 13, the distance from the inner flange 85 to the lowest thread of the male threaded portion 95 is p1, and the plug peripheral wall 91.
Assuming that the distance from the lower end of the thick wall portion 95 to the uppermost thread of the female screw 84 is p2 and the distance from the upper flange 83 to the stopper 97 is s, p1 and p2> s. The distance s is the downward stroke of the cutter 93 due to the pressing of the closing wall 92. Therefore, as in the case of the first embodiment, when the ring 98 is left, the cutting edge 107 of the cutter 93 cannot reach the opening formation scheduled portion 64.

When opening the container, as shown in FIG. 14, even if the plug 72 is rotated counterclockwise, the engagement of the engaging portions 86 and 106 allows the plug 72 to freely rotate in the same direction. I can not do it, but if I rotate it by force,
The breakable portion 105 is broken and the skirt 99 is separated from the plug 72. Next, as shown in FIG. 15, the knob 103
The thin portion 101 is cut by pulling the ring 98 and the ring 98 is removed from the plug 72. After that, both clockwise and counterclockwise rotations of the plug 72 become free, and as shown in FIG. 16, the plug 72 is screwed into the socket 71 while being rotated clockwise. Eventually, the upper flange
When the stopper 97 comes into contact with 83 and the rotation of the plug 72 is stopped, in this state, the opening formation scheduled portion 64 may be cut by the cutter 93 as in the case of the first embodiment (FIG. 1).
7).

Throughout the first and second embodiments, the following may be mentioned as modifications of the opening formation planned portion.

In FIG. 18, the paper layer is removed from the entire circular portion of the opening formation planned portion 111. In FIG. 19, perforations 113 are provided so as to surround the opening formation planned portion 112. In FIG. 20, a punched hole is formed in the opening formation planned portion 114.
115 is formed, and this is covered with an aluminum foil sheet 116 coated with polyethylene from both inside and outside.

[0047]

According to the first aspect of the present invention, when the closing wall is pushed down to transform the closing wall from the upward arched state to the downward arched state and the cutter is lowered, the cutting blade of the cutter cuts the opening. Since the opening is cut, the portion where the opening is to be formed at the time of opening is covered with the sealed space formed by the socket and the plug, so that there is no fear of spilling the filling liquid at the time of opening, and the opening operation can be performed with peace of mind. .

According to the second or fourth aspect of the present invention, the opening formation scheduled portion can be cut only after the ring is cut, so that the container can be prevented from being opened unintentionally.

According to the third aspect of the present invention, the fitting property between the socket and the plug is good irrespective of whether the ring is cut or not, so that the plug can be prevented from being accidentally detached from the socket. The sealability after opening is guaranteed.

According to the fifth aspect of the invention, the ring can be cut only after the easily breakable portion is broken, so that the ring can be prevented from being cut carelessly.

According to the sixth aspect of the present invention, the plug peripheral wall prevents the careless impact or the like from being applied to the closing wall, so that the careless opening can be prevented.

According to the seventh aspect of the invention, since the opening formation scheduled portion is not cut over the entire circumference and a cutting residue is generated, there is no concern that the cut opening formation scheduled portion falls into the container. Since it is hygienic. If the cut opening formation part falls into the container in some cases, when pouring the contents, the falling object may get stuck in the opening,
There is a concern that you may accidentally swallow a fallen object.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a container opening device according to a first embodiment of the present invention.

FIG. 2 is a vertical vertical sectional view of the container opening device.

FIG. 3 is a sectional view showing a part of FIG. 2 in an enlarged manner.

FIG. 4 is a plan view showing details of a socket.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is an explanatory view showing a container opening operation of the container opening device.

7 is an explanatory diagram showing a container opening operation following the operation shown in FIG. 6. FIG.

8 is an explanatory diagram showing a container opening operation following the operation shown in FIG. 7. FIG.

9 is an explanatory diagram showing a container opening operation that follows the operation shown in FIG. 8. FIG.

FIG. 10 is an exploded perspective view of a container opening device according to a second embodiment of the present invention.

FIG. 11 is a vertical cross-sectional view of the container opening device.

12 is a transverse cross-sectional view taken along line XII-XII in FIG.

FIG. 13 is a cross-sectional view showing a part of FIG. 11 in an enlarged manner.

FIG. 14 is an explanatory view showing a container opening operation of the container opening device.

15 is an explanatory diagram showing a container opening operation following the operation shown in FIG. 14. FIG.

16 is an explanatory diagram showing a container opening operation following the operation shown in FIG.

17 is an explanatory diagram showing a container opening operation following the operation shown in FIG. 16. FIG.

FIG. 18 is a cross-sectional view showing a modified example of the opening formation scheduled portion.

FIG. 19 is a cross-sectional view showing another modified example of the opening formation scheduled portion.

FIG. 20 is a cross-sectional view showing still another modified example of the opening formation scheduled portion.

[Explanation of symbols]

 11, 61 Container 12, 62 Unsealing tool 13, 63 Container top wall 16, 64 Opening formation area 31, 71 Socket 41, 81 Socket peripheral wall 32, 72 Plug 51, 91 Plug peripheral wall 52, 92 Plug closing wall 53, 93 Cutter 57, 107 cutting edge

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Fumihiko Suminaga Inventor Fumihiko Suminaga Taro Kitajima-cho, Itano-gun, Tokushima No. 1 Nishinokawa, No. 10 Nishinokawa, Shikoku Kakoki (72) Inventor Kojiro Hayashi Itano-gun, Tokushima Prefecture Kitajima Town Taro Yasusu 1 Nishinokawa No. 1 1 Shikoku Kakoki Co., Ltd. (72) Inventor Michio Ueda Kitajima Town Tokushima Prefecture Kitajima Town No. 10 Nishinokawa Nishi Shikoku Koki Co., Ltd.

Claims (7)

[Claims] 1. A container 11, 61 and an opening device 12, 62 are provided, and an opening formation scheduled portion 16, 64 is formed on the container top wall 13, 63, and the opening device 12, 62 has an opening at the lower end. Sockets 31 and 71 having peripheral walls 41 and 81 fixed to the outside of the planned portions 16 and 64
And a peripheral wall 51, 91 removably fitted in the socket peripheral wall 41, 81 and a closing wall 52 crossing the inside of the peripheral wall 51, 91.
A resealable container comprising plugs 32 and 72 having 92 and cylindrical cutters 53 and 93 for accommodating the sockets 31 and 71 or the plugs 32 and 72 and having cutting edges 57 and 107 at the lower ends. In the unsealing device, the closing walls 52 and 92 are made of elastic material and have an arch-shaped cross section, and are deformable in a range from an upward arched state to a downward arched state. A resealable container opening device, characterized in that it is connected to the lower surfaces of the closing walls (52, 92) at the upper end and is integrally molded with this. 2. An unsealing prevention ring 44 is provided at the upper end of the peripheral wall 41 of the socket so as to be continuous through an annular thin portion 43 for cutting, and a thin portion 47 for longitudinal cutting is provided on the ring 44,
A knob 48 is provided adjacent to one side of the thin portion 47, a stopper 54 is provided on the outer surface of the plug peripheral wall 51, and
In the state where the stopper 54 is in contact with the upper end of 44, the cutting blade 57 of the cutter 53 cannot reach the opening formation planned portion 16, but the stopper 54 is in contact with the upper end of the socket peripheral wall 41 after ring cutting. 2. The resealable container opening device according to claim 1, wherein the cutting edge 57 of the cutter 53 can reach the opening formation planned portion 16. 3. An upper annular fitting groove 45 is formed on the inner surface of the ring 44 with the thin portion 43 interposed therebetween, and a lower annular fitting groove 46 is formed on the inner surface of the socket peripheral wall 41.
Are provided respectively, and an annular fitting protrusion is provided on the outer surface of the plug peripheral wall 51.
56 is provided, and when the stopper 54 is in contact with the upper end of the ring 44, the fitting protrusion 56 is fitted in the upper fitting groove 45, and the stopper 54 is attached to the upper end of the socket peripheral wall 41 after the ring is cut.
3. The resealable container opening device according to claim 2, wherein the fitting protrusion 56 is fitted in the lower fitting groove 46 when the container is in contact with the container. 4. A stopper 97 is provided on the outer surface of the plug peripheral wall 91, a drooping unsealing prevention ring 98 is provided continuously with the tip of the stopper 97, and a cutting thin annular portion 101 is provided at the boundary between the stopper 97 and the ring 98. The ring 98 is provided with a vertical thin section 102, and a knob 103 is provided close to one side of the thin section 102, and an opening is formed when the stopper 97 is in contact with the upper end of the ring 98. The cutting edge 107 of the cutter 93 cannot reach the planned portion 64, but the cutting edge 107 of the cutter 93 can reach the planned opening forming portion 64 when the stopper 97 is in contact with the upper end of the socket peripheral wall 81 after cutting the ring. The resealable container opening device according to claim 1. 5. A female screw 84 is provided on the inner surface of the socket peripheral wall 81, a male screw 96 screwed into the female screw 84 is provided on the outer surface of the plug peripheral wall 94, and an outward engaging portion 86 is provided at the upper end of the outer surface of the socket peripheral wall 81. A skirt 99 is provided so as to be continuous with the lower end of the ring 98 so as to cover the outward engaging portion 86, and an easily breakable annular portion 105 is provided at the boundary between the ring 98 and the skirt 99. The engagement portion 86 is provided so that the plug 72 can freely rotate in the screwing direction, but the engaging portions 86 and 106 are engaged so as to restrain the rotation in the opposite direction, and the plug 72 is screwed in the screwing direction. The resealable container opening device according to claim 4, wherein the easily breakable portion 105 is broken by the rotation in the opposite direction. 6. The resealable container according to claim 1, wherein an upper end level of the closing walls 52, 92 in the upward arch shape is set to be equal to or lower than an upper end level of the plug peripheral walls 51, 91. Opening device. 7. A part without a cutting edge at a part of the lower ends of the cutters 53, 93.
The resealable container opening device according to any one of claims 1 to 6, wherein 58 and 108 are provided.