JPH0712273Y2 - Wide-mouth container lid device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a lid device that is attached to the mouth of a wide-mouthed container and closes it, by pulling a gripping piece provided on the outer surface of the lid device to open the lid device. The present invention relates to a so-called pull-open type lid device.

[Conventional technology]

In a pull-open type lid device for the mouth of a wide-mouthed container, as a means for simultaneously achieving certainty of fitting into the wide-mouthed container and safety after opening, Japanese Patent Laid-Open No. 62-78051. In the opening, an opening hole is formed in a lid body made of a metal plate that fits in the mouth portion of the wide-mouthed container, and the peripheral edge of the opening hole is bent inward to have an L-shaped cross section. It is described that a synthetic resin closing body that closes the hole is integrally molded so as to wrap around the inner peripheral edge of the opening hole, and further that a gripping piece for opening is integrally formed on the outer surface of the closing body. Has been done.

In addition, the applicant of the present application, in Japanese Patent Application No. 63-118267, provides a lid body formed of a metal plate with an opening hole of an appropriate shape and is made of a soft synthetic resin for closing the opening hole. By forming the closure body integrally and forming a groove having a V-shaped cross-section on the inner surface of the closure body in a loop shape, a portion of the closure body surrounded by the groove is formed as an unsealing portion. It has been proposed to integrally form a holding piece for opening on a portion of the outer surface of the opening portion along the groove.

Similarly, the applicant of the present application has filed a practical application as a lid device with an inner plug 63
In No. 123281, as a means for achieving both reliable sealing and easy removal of the inner stopper, a lid made of a metal plate fitted to the mouth portion of the wide-mouthed container is provided with an opening hole of an appropriate shape. While forming a closing body made of a soft synthetic resin for closing the opening hole, a closing piece for opening is integrally formed on the outer surface of the closing body while the closing body is formed. On the inner surface of the above, a structure in which a plug body that fits into and out of the opening hole of the lid body is integrally formed is proposed.

[Problems to be solved by the device]

By the way, an inexpensive soft synthetic resin such as polyethylene is generally used as the closing body of the lid device in each of the above-mentioned prior arts, and these inexpensive soft synthetic resins such as polyethylene have a very low moisture permeability. .

Therefore, if an inexpensive soft synthetic resin such as polyethylene is used as the material of the occluding body, when a powder food such as coffee or powdered milk or an article that dislikes moisture such as salt or sugar is packaged in a wide-mouthed container, it can be used for a long time. While storing, the moisture permeates into the wide-mouthed container to deteriorate the contents, or conversely, the water in the wide-mouthed container is diffused to the outside from the closed body and the contents become excessive. There were problems such as drying and loss of scent.

In particular, when the lid body is formed to have a large opening, the surface area of the closure body increases and the amount of water permeation increases, so that the above-mentioned problem becomes prominent.

As means for solving this problem, it is conceivable to increase the wall thickness of the closing body to reduce the moisture permeability, or to form the closing body with a synthetic resin such as polypropylene having no moisture permeability. In the case of the former, the amount of synthetic resin used for molding the closing body increases and the manufacturing cost increases,
On the other hand, in the latter case, since the material is expensive, the manufacturing cost is also high, and it is difficult to open the moisture-impermeable synthetic resin because the material is hard.

On the other hand, in Japanese Patent Laid-Open No. 63-110154 as another prior art, a film having a high gas barrier property formed by laminating a synthetic resin film on a base material such as aluminum foil is heat-sealed at the mouth of a wide-mouthed container. In a lid device that is fixed by means such as, etc., synthetic resin is integrally molded on the outer surface of the film except for the periphery of the opening part, and the gripping piece is caulked and fixed to the periphery of the opening part in the synthetic resin layer. It is described that the gripping piece is pulled and the film is cut along the circumference of the gripping piece to open the film.

However, in the means for opening the film by cutting the film as in this prior art, the opening parts of the synthetic resin layer are island-shaped, in other words, the opening part of the synthetic resin layer is slightly separated from the surrounding area. There is a problem that the appearance is not good because it is independent with a gap. Also,
Also in the above-mentioned three conventional techniques, the appearance cannot be improved because printing cannot be performed on the closing body.

In this regard, JP-A-59-209550 discloses that a frame-shaped connector is welded to the mouth of a container made of synthetic resin, and a lid plate made of synthetic resin is welded to this connector. A lid device in which a lid plate is welded to a container body via a connecting tool, a weakening line (weakened region) formed of an annular groove is formed in the lid plate or the connecting tool, and the tear line is cut and opened at the position of the weakening line. Describes that a surface layer for improving gas barrier properties is formed on the entire outer surface thereof.

According to the device disclosed in Japanese Patent Laid-Open No. 209550/1984, since the surface layer is made of a film, the surface layer can be printed, so that the appearance can be improved. But,
In this publication, the pull-tag (handle) for opening is formed on the inner peripheral edge of the connector and placed on the lid plate, so that a container with tabs is provided with a film surface layer, It is necessary to form a hole in the surface layer so that the entire tab is exposed, which reduces the gas barrier property.

It is an object of the present invention to provide a lid device for a wide-mouth container, which can improve the appearance and the gas barrier property.

[Means for Solving the Problems]

In order to achieve this object, in claim 1, "a lid made of a metal plate fitted into the mouth of a wide-mouthed container is provided with an opening hole of an appropriate shape, and a soft synthetic resin for closing the opening hole. By integrally forming a closure body made of, and forming a groove for looping the closure body in a loop shape on the inner surface of the closure body, a portion of the closure body surrounded by the groove is formed. An opening part, and a gripping piece for opening at a site along the weakening line on the outer surface of the opening part of the closure.
In a wide-mouth container lid device integrally formed so that its root protrudes from the surface of the closing body, an outer surface of the closing body is provided with a film such as an aluminum foil that spreads outside the groove. , And is attached with the base of the gripping piece penetrating therethrough ”.

Further, in claim 2, "a lid body made of a metal plate fitted to the mouth portion of the wide-mouthed container is provided with an opening hole of an appropriate shape and made of a soft synthetic resin for closing the opening hole. The closure body is integrally molded, and the opening holding tab is integrally formed on the outer surface of the closure body such that its root projects from the surface of the closure body, while the closure piece is formed on the inner surface of the closure body. Is a lid device for a wide-mouthed container, which is integrally formed with a stopper body that is fitted into and removed from the opening hole of the lid body,
A film of aluminum foil or the like is attached to almost the entire outer surface of the closure in a state where the base of the holding piece penetrates. ”

[Function and effect of device]

With this configuration, the film is in a state in which the base of the gripping piece penetrates and is spread over the entire closing body,
Even if the closing body is thinly molded with a low-moisture-permeable, soft synthetic resin such as polyethylene, by using a non-moisture permeable material such as aluminum foil for the film, a wide-mouth container can be opened through the closing body. It is possible to block the permeation of moisture into and out of the film with a film.

In other words, even in the obstruction body, the entire part including the weakened line where the gas barrier property is the lowest can be covered with the non-moisture permeable film, and the root of the gripping piece is projected from the obstruction body so that the gas barrier Since it has high properties, it can improve the gas barrier property at the location of the occluder.Therefore, while the articles are packed in a wide-mouthed container and stored for a long period of time, the contents are deteriorated by moisture or excessively dried. It is also possible to prevent the scent from coming off.

Further, since the film is attached so as to spread over the entire outer surface of the closing body, not only can the outer surface of the closing body be made flat, but various printings can be easily performed on the film. Therefore, the appearance can be significantly improved and the commercial value can be increased.

Furthermore, since the film only penetrates the base of the gripping piece, the gripping piece can be brought closer to the weakening line without lowering the gas barrier property, so the tensile force at the time of opening is weakened. It can be made to act intensively on the above-mentioned place, and therefore it can be easily opened without lowering the gas barrier property.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 9 show a first embodiment corresponding to claim 1,
In these figures, reference numeral 1 indicates a wide-mouthed container with a bottom formed of a suitable material such as a thin metal plate or synthetic resin, and reference numeral 2 indicates a lid body made of a thin metal plate. On the outer peripheral edge of the lid body 2, an inverted U-shaped mounting portion to be fitted into the mouth portion of the wide mouth container 1.
2a is formed by bending, and by fastening or crimping the mounting portion 2a around the mouth portion of the wide-mouthed container 1,
The lid 2 is fitted into the mouth of the wide-mouthed container 1.

The lid body 2 is provided with an opening hole 2b which is concentric with the lid body 2 and has a circular shape in a plan view, and a closing body 3 made of a soft synthetic resin such as polyethylene covers the opening hole 2b. It is integrally molded so as to close it. By forming a V-shaped groove 4 on the inner surface of the closing body 3 so that the closing body 3 can be torn, the V-shaped groove 4 is formed so as to extend along the inner peripheral edge of the opening hole 2b in the lid body 2. A portion of the body 3 surrounded by the groove 4 and having a circular shape in a plan view is formed as an opening portion 3a, and a pre-ring 6 as an example of a gripping piece is provided on a portion of the outer surface of the opening portion 3a adjacent to the groove 4. Build integrally.

In this case, the inner peripheral edge portion of the lid body 2 is folded back radially outward, and the folded back portion is wrapped with the outer peripheral edge portion 3b of the closure body 3 to firmly fix the closure body 3 to the lid body 2. ing.

Then, as an example of a film, a non-moisture permeable aluminum foil 7 formed by coating or laminating a synthetic resin film 7b on both front and back surfaces is provided on the outer surface of the closing body 3, and the base of the pull ring 6 is attached to the aluminum foil 7. Stick it so that it penetrates. In this case, the aluminum foil 7 has an outer peripheral edge portion 7a.
Is formed so as to extend outside the closing body 3, and this protruding portion is attached to the outer surface of the lid body 2. Further, the aluminum foil 7 has a total thickness t of about 50 microns. It is set.

In the above-mentioned configuration, even if the closing body 3 is formed thin with an inexpensive soft synthetic resin having moisture permeability such as polyethylene, moisture is prevented from passing through the closing body 3 into and out of the wide mouth container 1. Since it can be shielded by the aluminum foil 7, moisture in the atmosphere enters the wide-mouthed container 1 to seal the wide-mouthed container 1 for a long time to deteriorate the contents, or conversely, in the wide-mouthed container 1 It is possible to prevent the problem that the moisture is diffused into the atmosphere and the contents are excessively dried.

By the way, with the configuration in which the closure body 3 is simply molded on the lid body 2, it is almost impossible to print a complicated pattern or the like on the outer surface of the closure body 3, and at the time of molding, at most the closure body 3 is formed.
You can only apply an uneven pattern to the surface of.

On the other hand, when the aluminum foil 7 is attached to the outer surface of the closing body 3 as in the present invention, various patterns are printed on the aluminum foil 7 in advance, so that the outer surface of the lid device is colorful. It is possible to apply patterns etc., and with this,
With the synergistic effect that the base of the pull ring 6 penetrates the aluminum foil 7 and the aluminum foil 7 is attached so as to spread over the entire range of the closure body 3, the appearance of the lid device is significantly improved. You can do it. When the aluminum foil 7 is used as the film, the aluminum foil 7 is used as in the embodiment.
Forming the synthetic resin film 7b on the surface has an advantage that printability can be improved.

As in the present invention, when the aluminum foil 7 is attached to the outer surface of the closure body 3 with the base of the pull ring 6 penetrating, the closure body 3 can be formed at the same time as the closure body 3 is formed by the means shown in FIGS. Easy to do.

That is, first, as shown in FIG. 4, an aluminum foil 7 is adhered to the outer surface of the lid body 2 with an adhesive agent 8 or the like, and then the lid body 2 is provided with a cavity 11 for forming a closed body. The aluminum foil 7 and the lid 2 are placed between the two molds 9 and 10 by sandwiching them between the mold 9 and the other mold 10 having the pull ring molding cavity 11a. In that state, the molten synthetic resin is injected into the cavity 11 for molding the closed body from the runner 12 provided in one of the molds 9.

Then, the molten synthetic resin fills the closing body forming cavity 11 while pressing the aluminum foil 7 against the other mold 10 to form the closing body 3 and the aluminum foil 7 on the closing body 3. The sticking of is done at the same time, and in the process,
When the molten synthetic resin reaches the location of the pull ring molding cavity 11a, the aluminum foil 7 is pierced by the pressure of the molten synthetic resin and the molten synthetic resin is pulled into the pull ring molding cavity.
The pull ring 6 is formed by filling 11a.

In this case, even if the aluminum foil 7 is adhered to the lid body 2, the portion of the outer peripheral edge portion 7a of the aluminum foil 7 that is adhered to the inner peripheral edge of the lid body 2 is as shown by the one-dot chain line in FIG. Since it is peeled off from the lid body 2 by the pressure of the molten synthetic resin and adheres to the lower surface of the other mold 10, the closure body 3 is surely molded into a form in which the inner peripheral edge of the lid body 2 is encapsulated from inside and outside. It

Then, after the synthetic resin is solidified, the molds 9 and 10 are separated from each other, and the movable core 14 of the other mold 10 is slid along the hole 13 to form the pull ring molding cavity.
By removing the molded pull ring 6 from 11a, it is possible to obtain a lid device in which the aluminum foil 7 is attached to the entire outer surface of the closure body 3 with the pull ring 6.

In this case, when the synthetic resin film 7b is formed on the back surface of the aluminum foil 7 as in the embodiment, there is an advantage that the aluminum foil 7 can be firmly adhered to the closing body 3. When the outer peripheral edge of the lid is attached to the outer surface of the lid body 2, the closing body 3 and the lid body 2
Since it is possible to prevent moisture from permeating through the contact surface with the contact surface, the moisture impermeable property of the lid device can be further ensured.

In order to open the wide-mouthed container 1 sealed with the lid device having the above-described structure, the pull ring 6 may be pulled upward and the closing body 3 may be torn along the V groove 4 to cut off the opening portion 3a.

In that case, since the closing body 3 is made of soft synthetic resin, the closing body 3 can be torn with a light force, and moreover, as the opening 3a is cut off, as shown in FIG. Is cut into the same shape as the unsealed portion 3a, or the outer peripheral edge portion 7a of the aluminum foil 7 is peeled off from the outer peripheral edge portions 3b of the lid 2 and the closing body 3 as shown in FIG. Since the aluminum foil 7 is attached, it is not difficult to open it, and since the aluminum foil 7 is thin and does not hurt a person, safety is not deteriorated after opening. .

FIGS. 10 to 11 show the second embodiment. In this embodiment, when the inner peripheral edge portion of the lid body 2 is sandwiched by the outer peripheral edge portion 3b of the closure body 3 from inside and outside, the lid body 2 Holes formed in the lid body 2 on the outer side and the inner side
By integrally connecting via the 15, the fixing strength of the closing body 3 to the lid body 2 is improved.

FIG. 12 shows the third embodiment, and in this embodiment,
A hole similar to that in the case of FIGS. 10 to 11 is formed in the inner peripheral edge of the lid 2.
By appropriately punching 15 in the circumferential direction and crushing and deforming the protrusions 16 inserted into the holes 15, the closing body 3 is fixed to the lid body 2 so as not to be detachable.

13 to 14 show a fourth embodiment corresponding to claim 2.

That is, in closing the opening hole 2b in the lid body 2 with the closing body 17 with the pull ring 6, the tubular portion 2d with the step portion 18 is formed by bending the inner peripheral edge portion of the lid body 2 and the tubular portion 2d While forming the lower end 2e to be sharp, a plug body 17a tightly fitted to the tubular portion 2d is integrally formed on the inner surface of the closing body 17, and the plug body 17a is formed.
In addition, a holding portion 17b that is fitted into the cylindrical portion 2d of the lid body 2 from the outside.
Are integrally connected via the thin-walled weakening line 19, and
A non-moisture permeable aluminum foil 7 is attached to the outer surface of the closing body 17.

According to the fourth embodiment, the pull ring 6 is hooked with a finger to pull the closing body 17 upward to pull out the plug body 17a from the opening hole 2b of the lid body 2 and at the same time cut the weakening line 19. By this, the wide-mouthed container 1 can be opened,
Once opened, the plug 17a can be inserted into and removed from the opening hole 2b, so that the closure 17 can be used as an inner plug.

The aluminum foil 7 can be adhered to the closing body 17 in the fourth embodiment at the same time when the closing body 17 is formed by the same means as shown in FIGS.

Needless to say, the form of the gripping piece for opening the lid device is not limited to the pull ring and may be another form such as a T-shape. Needless to say, the material of the film is not limited to aluminum foil, and other materials such as a synthetic resin film such as nylon or polypropylene may be used.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of a lid device in a state of being covered with a wide-mouthed container, FIG. 2 is a perspective view in an opened state, and FIG. 3 is III- of FIG. III view enlarged sectional view, 4th
5 and 5 are views showing the manufacturing process of the lid device, FIG. 6 is a sectional view taken along line VI-VI of FIG. 5, FIG. 7 is an enlarged sectional view of an aluminum foil, and FIGS. 8 and 9 are respectively Diagram showing the opening procedure, No. 10
FIG. 11 is a view showing another embodiment, FIG. 11 is a sectional view taken along line XI-XI of FIG. 10, FIG. 12 is a view showing a modification of FIG. 11, and FIG. Fig.14 XI of Fig.13
It is a V-XIV sectional view. 1 ... Wide-mouthed container, 2 ... Lid, 2b ... Opening hole, 3,17 ...
… Closing body, 3a …… Opening part, 4 …… Groove, 6 …… Pull ring as an example of holding piece, 7 …… Aluminum foil as an example of film, 9,10 …… Integrating the closure body with the lid Mold for molding.

Claims (2)

[Scope of utility model registration request] 1. A lid made of a metal plate fitted into the mouth of a wide-mouthed container is provided with an opening hole of an appropriate shape, and a closure body made of a soft synthetic resin for closing the opening hole is integrally formed. And forming a loop-shaped groove on the inner surface of the closing body so that the closing body can be torn, thereby forming a portion of the closing body surrounded by the groove as an opening portion, A lid for a wide-mouth container formed by integrally molding a holding tab for opening at a portion of the outer surface of the opening portion of the closing body along the weakening line so that the base of the opening holding piece projects from the surface of the closing body. In the device, a wide mouth container lid characterized in that a film made of aluminum foil or the like, which is spread outside the groove, is attached to the outer surface of the closure in a state where the base of the gripping piece penetrates. apparatus. 2. A lid made of a metal plate fitted into the mouth of a wide-mouthed container is provided with an opening hole of an appropriate shape, and a closing body made of a soft synthetic resin for closing the opening hole. It is integrally molded, and on the outer surface of the closing body, a holding piece for opening is integrally formed so that its root projects from the surface of the closing body, while on the inner surface of the closing body, In a lid device for a wide-mouthed container, which is integrally formed with a stopper body that is fitted into and removed from an opening hole of a lid body, a film such as an aluminum foil is provided on the gripping piece in a substantially entire range of an outer surface of the closure body. A lid device for a wide-mouthed container, characterized in that it is attached in a state where the base penetrates.