JPH082543A - Cap structure of bottle - Google Patents

Abstract

PURPOSE:To surely, easily, and closely attach a metal lie cap to the mouth cylinder of a bottle formed with cardboard, synthetic resin, or glass and further, be easily opened and make it possible to seal it again. CONSTITUTION:A fitted part 6 of an external material is attached to the peripheral upper end of the mouth cylinder 2 of a bottle 1 to form a cap body 4, at the peripheral edge of the top plate 5. A cutting score line is provided on the top plate 5 and a pull-tab 9 is provided as a unit at the sealing part 8 surrounded by the scored line for cutting made on the top plate 5. The fitted part 6 is stuck with heat and pressure to the mouth cylinder 2 through an adhesive and a short cylindrical sealing cap 12 with the top, having the same inner diameter with the outer diameter of the fitted part 6 is fitted to the cap body 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle lid made of synthetic resin or glass, which is a metal lid body obtained by peeling off a sealing piece surrounded by a score line from an opening of a top plate. The present invention relates to a bottle lid structure that is tightly assembled in a cylinder.

[0002]

2. Description of the Related Art First of all, a container for storing foods, medicines, chemicals, etc. is required to have a perfect sealing property. That is,
In order to prevent the quality of food products, etc. produced by the consumer from being deteriorated by the time the container is opened, or to enable efficient transportation, the storage container itself is airtight. It is important to maintain the fluidity and liquid tightness.

Next, in the process of storing foods, etc.,
It is required to ensure reliable, quick and easy assembly while ensuring this sealing property. That is, with the contents stored in the container body, the opening of the container body must be efficiently and tightly closed by the lid.

Then, when the consumer opens the container for use or the like, the concept is opposite to that of ensuring the hermeticity, but the lid can be easily, reliably and safely removed from the container body. is necessary.

Furthermore, after the customer has opened the package, all of the stored contents are not necessarily used and consumed at one time. Therefore, in order to protect the contents after opening and taking out a part of the contents. There will be a need to re-seal.

From the viewpoint of satisfying all such requirements, conventionally, a metal can has been widely used as a container. This metal can is surely sealed and can withstand some impact, and can prevent the deterioration of the stored items.Also, a score line is formed on a part of the top plate to form a sealing piece, If the sealing piece is peeled off at the score line portion to form a so-called pull tab structure, the opening can be easily opened.

So-called three-piece cans have been widely used as metal cans. This is because one end of the metal cylinder is closed with a metal bottom plate and caulking is sealed or wound and sealed by a roll jig, and the contents are stored from the opening end which is the other end of the cylinder. A very high sealing effect can be achieved by a configuration in which the opening end is similarly closed by a metal lid plate and caulking is sealed or winding is sealed by a roll jig.

[0008] However, the work of sealing by crimping or winding and sealing by a roll jig is extremely specialized and requires a predetermined mechanical device and a skilled technique.
And, as is well known, the crimping sealing or the winding tightening sealing with a roll jig is performed by integrally superposing the upper end portion of the cylindrical body and the peripheral end portion of the cover plate and winding them together. A certain level of strength is required for the tubular body and the cover plate so that cracks do not occur and the assembly is assured,
Therefore, in order to secure this strength, a thick material has to be used, and therefore, there is a dissatisfaction that the manufacturing cost increases.

However, after the sealing piece formed by the score line occupying a part or most of the lid plate serving as the top plate is peeled off at the score line portion and opened, it is wound around the upper end of the can. Since the peripheral edge of the lid plate is left in the form of a strip due to tightening, etc., a separate capped cap made of synthetic resin in the shape of a short cylindrical top is tightly assembled using this strip. This allows resealing after use.

By the way, as described above, a container having a so-called pull-tab structure, which is surely sealed, easy to open and resealable, has a sealing piece formed by a score line and has a cylindrical shape. Since it was necessary to use a lid plate made of metal capable of sealing the open end by crimping or winding it with a roll jig, a metal can was unavoidable.

[0011]

However, as described above, the metal can has many advantages, but the material cost thereof is high, and the metal can is swage-sealed or wound and sealed by a roll jig. There is a problem that work requires labor, skill and equipment cost.

[0012] Therefore, as a container having a relatively low manufacturing cost, a bottle body made of cardboard, synthetic resin or glass is often used. Particularly, in the case of a wide mouth bottle, it is used as a means for sealing the mouth tube. No. 4,968,629, a sheet made of aluminum foil or the like is brought into close contact with the upper surface of the mouthpiece, a sealing cap attached to the mouthpiece by screwing is used, or a rupturable metal cap is covered.

Since the threaded cap originally lacks in hermeticity, a sealing strip is provided on the lower surface of the top plate of the cap so as to face the upper surface of the mouth tube, or a sealing sheet is arranged in the cap. It is possible to re-seal not only before opening but also after opening, but the cost is high to mold the screw cap itself with synthetic resin, and although re-sealing is necessary, the stored contents are exhausted by several re-sealing and it is disposable. It becomes uneconomical when used as a container as described above.

Further, in the structure in which a sheet made of aluminum foil or the like is adhered to the upper surface of the mouthpiece, there is still some concern about the strength, and particularly in the case of foods that are stored after being subjected to heat treatment, the negative pressure generated inside due to cooling. There is also a problem that it cannot withstand the suction pressure due to.

In addition, not only is the adhesion between the mouthpiece and the aluminum foil sheet weak, but it is difficult to peel off despite the fact that it takes time and effort to open the aluminum foil sheet. A component for extending the tongue must be added to a part of the peripheral edge.

Further, in such a construction in which the sheets are adhered to each other, the whole area of the mouth tube is opened by peeling the sheet, so that moisture and miscellaneous bacteria are liable to be mixed during reuse and the quality is deteriorated. To take out an appropriate amount of the contents, a spoon or the like will be used, and there will be many chances of mixing water and the like.

It is possible to cover the container before opening the aluminum foil sheet with a sealing cap made of a synthetic resin in the shape of a short cylinder for the purpose of resealing. When the tongue is extended and added to a part of the aluminum foil sheet, this tongue will protrude from the sealing cap to the outside before opening, so the inner diameter of the sealing cap is larger than the outer diameter of the container mouth tube. Inevitably, the size of the aluminum foil sheet must be large and the sealing cap is loosened after peeling off the aluminum foil sheet, and the reliability of resealing cannot be obtained.

Therefore, as a further means for solving the problem of the sealing cap made of the aluminum foil sheet, there is a structure in which a rupturable metal cap is put on. The cap-shaped short-tube metal cap made of aluminum is tightly externally fitted to the mouth tube of the bottle, and the tongue-shaped pulling piece extends to a part of the lower end of the short tube. Then, when opening, the pulling piece is raised to release the assembly with the mouth tube.

In the form in which the assembly with the mouthpiece is released, a part of the short cylinder is broken by strongly pulling the tension piece, and further pulled up, the top plate is almost at the radius of the diameter of the mouthpiece. Bends.

However, since the top plate is further peeled off from this state, not only a strong force is required as described above, but it is slippery and always dangerous.

As described above, a metallic lid is desirable as a means for surely sealing the mouth tube of the container for easy opening and for resealing after opening is simple and reliable. However, when a metal lid is used, the container body is inevitably made of metal, and therefore it takes a lot of time to mold and the molding cost increases, so that the cardboard that can be molded at a low price, The technology for assembling the metallic lid to the bottle mouth tube made of synthetic resin or glass has not been developed.

Therefore, a technical object of the present invention is to securely and easily assemble the metal lid into the bottle mouthpiece in a tight manner. Therefore, the opening operation is simple and the resealing is not possible. It is intended to be possible.

[0023]

In order to solve the above-mentioned problems, a bottle lid structure of the present invention is a metal lid body assembled to a bottle mouth tube formed of cardboard, synthetic resin or glass. In addition, at the peripheral edge of the top plate, an assembling part for attaching an exterior assembly is provided around the upper end of the mouth tube of the bottle to form a lid, and a score line for cutting is provided on the top plate. The pulling piece is integrally attached to the sealing piece portion surrounded by the score line, and the assembling portion is tightly attached to the mouth tube.

The assembling portion of the lid is preferably tightly assembled by thermocompression bonding to the mouth tube of the bottle with an adhesive.

The sealing piece may be formed on the entire top plate portion by providing a ring-shaped score line in a continuous portion of the top plate and the assembly portion, or a score line may be provided on a part of the top plate. Alternatively, it may be formed on only a part of the top plate.

A lid-shaped cap with a short tubular shape having an inner diameter equal to the outer diameter of the mounting portion is mounted on the lid.

[0027]

As a result of the above construction, the assembling portion, which is the peripheral end portion of the lid, is attached to the upper end of the mouth tube by the exterior assembly. Since the container is assembled, even if the container is a bottle molded of cardboard, synthetic resin, or glass, a tight assembly of the assembly portion and the mouth tube is surely achieved.

Further, since the lid is made of metal, it is possible to provide a score line for cutting on the top plate, and a pulling piece is integrally attached to the sealing piece portion surrounded by the score line. Thus, if the pulling piece is pulled up to separate the score line, an opening is formed in the sealing piece portion of the top plate.

Since the pulling piece is integrally attached to the sealing piece portion of the top plate, it is easy to separate the score line when the pulling piece is pulled upward, and even after opening, the pulling piece remains integrated with the pulling piece. The sealing piece is attached to a part of the top plate.

As a means for forming the sealing piece, if a score line is provided in a ring shape in a continuous portion of the top plate and the assembly portion, the sealing tube can be removed to open almost the entire area of the mouth tube. Also, if a score line is provided on a part of the top plate, only a part of the top plate can be opened by removing the sealing piece.

Furthermore, if a cap-shaped short tube-shaped sealing cap having an inner diameter equal to the outer diameter of the assembling portion is prepared, the sealing cap is fitted into the lid body before opening and handled integrally with the container. Even if the sealing piece is removed and the mouth tube is opened, the assembly portion, which is the peripheral end portion of the lid body, remains at the upper end of the mouth tube in a state where the exterior assembly is attached. The cap can reliably re-seal the mouthpiece.

[0032]

EXAMPLE A bottle body 1 is inexpensively molded from cardboard, synthetic resin or glass, and a straight cylindrical mouth tube 2 having a relatively wide-mouthed structure is provided with an outer collar 3 in the form of a strip around the upper end thereof. Has been done.

The relatively thin metal lid 4 is provided on the peripheral end of a disk-shaped top plate 5 having an outer diameter substantially equal to the inner diameter of the mouth tube 2 and is the upper end of the mouth tube 2 described above. The collar 3 is provided with a mounting portion 6 for mounting the outer casing.

The assembling portion 6 has a substantially inverted U-shaped cross section, the lower end of the inner periphery of which is continuous with the peripheral edge of the top plate 5, and the inner peripheral surface of the outer collar 3,
The upper surface and the outer peripheral surface are covered with the exterior assembly, and an adhesive is provided between the assembly portion 6 and the outer collar 3 and thermocompression bonding is performed to tightly assemble the both.

Therefore, in the state where the lid body 4 is assembled to the mouth tube 2, the top plate 5 of the lid body 4 and the inner peripheral portions of the assembly portion 6 are in a posture of being tightly fitted into the upper end portion of the mouth tube 2. .

Next, in the embodiment of FIG. 2, a score line 7 for cutting is provided in a ring shape in a continuous portion of the top plate 5 and the assembly portion 6, and the entire top plate portion is used as a sealing piece 8. The pulling piece 9 is integrally attached to the sealing piece 8 portion surrounded by the score line 7.

The pulling piece 9 is to be integrated with the top plate 5 by fitting a part of the pulling piece 9 into a rivet piece 10 formed in advance on a part of the top plate 5 and crushing the rivet piece 10. The score line 7 is cut by pulling a finger on the ring portion 11 of the pulling piece 9 and pulling up to remove the sealing piece 8 to open the opening, and the opening is made to be substantially equal to the diameter area of the mouth tube 2.

The end of the pulling piece 9 is located opposite to the peripheral edge of the top plate 5 and the ring portion 11 is provided on the top plate 5 so that the opening operation is easy.
Located almost in the center of.

In the embodiment of FIG. 3, the score line 7 is provided on a part of the top plate 5, and a part of the top plate 5 is used as the sealing piece 8. Therefore, when the pulling piece 9 is pulled up to cut the score line 7 and the sealing piece 8 is removed, an opening having the same opening area as the sealing piece 8 can be formed in the top plate 5.

In this case, the score line 7 is not provided in a ring shape, but is partially interrupted, that is, the interrupted part becomes a continuous portion and the top plate 5 and the sealing piece 8 are continuous. If it is, the sealing piece 8 does not separate from the top plate 5 when the score line 7 is cut, but it can be disposed of together with the bottle body 1 if it is opened.

Further, when the opening is provided in a part of the top plate 5 as described above, the opening area becomes small, so that there is less possibility that foreign matter will be mixed into the inside after opening, and when the contents are taken out. By tilting the bottle body 1, an appropriate amount can be taken out little by little.

In any of the embodiments shown in FIGS. 2 and 3, the contents are not always taken out after opening, and it is necessary to take out an appropriate amount and then re-seal. There is also. The sealing cap 12 is used as a resealing means in such a case.

The sealing cap 12 has a structure in which a top plate 14 is integrally provided on the upper end of a short cylinder 13 having an inner diameter equal to the outer diameter of the assembly portion 6, and is made of a relatively soft synthetic resin.

Even before the sealing cap 12 is opened, the short cylinder 13 portion is fitted into the outer periphery of the mounting portion 6 of the lid 4 so as to be mounted in the container. Since the portion 6 remains as it is, it is possible to keep the bottle 1 sealed when it is fitted again.

[0045]

As described above, according to the bottle lid structure of the present invention, the metal lid can be tightly assembled to the bottle mouth tube formed of cardboard, synthetic resin or glass. Moreover, since it can be resealed, not only before opening,
It is possible to suppress deterioration of the stored contents even after opening the package.

Since the assembling of the lid body to the bottle body can be accomplished by thermocompression bonding via an adhesive, a large-scale device is not required, and for example, a consumer can select a desired product as appropriate and bottle it. It can be stored inside the body, and the lid can be easily sealed at the store at the time of liquidation.

As the bottle body, a product formed of cardboard, synthetic resin or glass is used. Since the lid body is not assembled to the bottle body by caulking between metals or winding and sealing by a roll jig, As mentioned above, not only does it require a large-scale device, the cost of the bottle itself is low, but also the metal lid itself can be thin, so it can be manufactured at low cost, and the conventional metal can can be manufactured. It can be manufactured at a much lower cost than using it.

Since the lid is made of metal, it can maintain a strength sufficient to withstand a negative pressure and an external force generated inside, and has a so-called pull tab structure, which ensures reliable sealing. However, since it can be easily opened and the assembly portion can be left at the peripheral end portion of the bottle mouth tube, a resealing sealing cap as a separate member can be tightly fitted.

[Brief description of drawings]

FIG. 1 is a sectional view of a bottle lid structure of the present invention.

FIG. 2 is a plan view of the top plate before opening the bottle lid structure of the present invention.

FIG. 3 is a plan view showing another embodiment of the top plate before opening the bottle lid structure of the present invention.

[Explanation of symbols]

1; bottle body, 2; mouth cylinder, 3; outer collar, 4; lid body, 5; top plate,
6; assembly part, 7; score line, 8; sealing piece, 9; tension piece, 10; rivet piece, 11; ring part, 12; sealing cap.

Claims (5)

[Claims] 1. A metal lid body (4) assembled to a mouth tube (2) of a bottle body (1) formed of cardboard, synthetic resin or glass, the peripheral end portion of a top plate (5). In the upper part of the mouth tube (2), an assembling part (6) for attaching an exterior is circumferentially provided to form a lid (4), and a score line (7) for cutting is provided on the top plate (5). The pulling piece (9) is integrally attached to the sealing piece (8) part surrounded by the score line (7), and the assembling part (6) is tightly attached to the mouth tube (2). A bottle-shaped lid structure. 2. The bottle lid structure according to claim 1, wherein the assembling part (6) is tightly assembled by thermocompression bonding to the mouth tube (2) via an adhesive. 3. A score line (7) is provided in a ring shape in a continuous portion of the top plate (5) and the assembly portion (6), and the top plate (5) portion is used as a sealing piece (8). The bottle body structure according to 1 or 2. 4. The score line (7) is provided on a part of the top plate (5), and a part of the top plate (5) is used as a sealing piece (8).
Alternatively, the bottle lid structure described in 2. 5. The lid cap (4) according to claim 1, 2 or 3 or 4, wherein a capped cap (12) in the shape of a short cylinder having an inner diameter equal to the outer diameter of the mounting portion (6) is mounted on the lid body (4). Bottle body structure.