JPH10305857A - Cap seal for bottle, and sealing structure of bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the appearance, and increase the sealing property by a method wherein a large number of temper-proof cuts which are cut in the lateral direction by a short dimension, are arranged in parallel in the vertical direction with fixed intervals. SOLUTION: On a part of a cap seal 1 for bottle, which is located lower than a bead Bd of a bottle B, tamper-proof cuts 4 are provided. For the tamper- proof cuts 4, a large number (approx. 20 lines) of cuts which are cut in the lateral direction by a short dimension (approx. 1.0 mm) and are arranged in parallel in the vertical direction with fixed intervals, (approx. 1.0 mm), are formed in four rows with appropriate intervals. By this method, those problems wherein the tamper-proof cuts 4 are expanded owing to a heat-shrinkage of the cap seal 1 for bottle, and the tamper-proof cuts 4 seem to be broken, and the appearance of the sealing of the bottle B becomes unfavorable, or the outside air becomes easy to enter to an internal plug 3 side from the tamper-proof cuts 4, and the sealing property of the sealing of the bottle B decreases, etc., can be prevented from occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field relating to sealing using a cap seal having a heat shrink property of a mouth of a bottle.

[0002]

2. Description of the Related Art Conventionally, as a sealing technique using a cap seal having a heat-shrinking property at the mouth of a bottle, for example, a technique described in JP-A-9-24958 is known.

[0003] This conventional bottle sealing technique uses a bottle cap seal formed in a heat-shrinkable cylindrical shape. The bottle cap seal is fitted from the bottle mouth to the bottle mouth of the bottle. It is put on the peripheral part of the inner plug and brought into close contact by heat shrinkage due to heating. In order to prevent the fraudulence of pulling out the bottle cap seal, opening the inner cap and refilling the contents of the bottle, the bottle cap seal is a fraud prevention cut consisting of a continuous break line in the diagonal or vertical direction. (See the left end view of FIG. 9b). In addition, a window hole with an edge piece is provided in an upper part of the bottle cap seal. The window hole of the bottle cap seal is closed by a disc-shaped canopy.

[0004] In this conventional bottle sealing technique, the bottle mouth and the inner stopper of the bottle are covered with a bottle cap seal to improve the appearance and appearance, thereby giving a sense of quality. Further, it is intended to assist the plug pressure of the inner plug by bringing the bottle cap seal into close contact with the inner plug from the bottle mouth of the bottle.

[0005]

In the above-mentioned conventional bottle sealing technology, the bottle cap seal thermally contracts mainly in the horizontal direction due to the heating, so that the fraud-preventing cut 4 is greatly expanded. (See the central view of FIG. 9b). Therefore, there is a problem that the opened fraud-preventing cut 4 appears to be damaged, and the appearance of the bottle sealing becomes poor. In addition, there is a problem that outside air can easily enter the inner plug side from the opened fraud prevention notch 4 and the sealing property of the bottle is reduced.

Further, the edge of the window hole of the bottle cap seal is bent from the main body portion thereunder and has weak adhesion to the peripheral edge of the canopy, so that a gap is formed between the edge and the peripheral edge of the canopy. Easy to be formed. Therefore, there is a problem that the gap looks like a poor seal and the appearance of the bottle is poor. In addition, it is easy for outside air to enter the inside plug side from the gap,
There is a problem that the sealing property of the bottle is lowered.

Further, since the bottle cap seal is thermally shrunk along the inner stopper and the unevenness of the bottle, complicated uneven portions are easily formed in the bottle cap seal. Therefore, there is a problem that the uneven portion looks as if the foreign matter is contained therein, and the appearance of the bottle is poor. In addition, the uneven portion secures the expansion allowance of the bottle cap seal, and cannot effectively assist the plug pressure of the inner stopper of the bottle (such as low-malt beer) to which the internal pressure is applied. Is low.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bottle cap seal having a good appearance and a high sealability, and a bottle sealing structure.

[0009]

Means for Solving the Problems To solve the above-mentioned problems, the bottle cap seal according to the present invention employs the following means.

An object of the present invention is to provide a heat-shrinkable cylindrical plug which is cut into a part and provided with a notch for preventing fraud, and which is fitted from the bottle mouth to the bottle mouth. In the bottle cap seal, which is fitted at least on the peripheral edge of the bottle and is closely adhered by heat shrinkage due to heating, the fraud-preventing cuts are cut short in the horizontal direction and are arranged in parallel in parallel at a certain interval in the vertical direction. Is achieved.

According to this means, the fraud-preventing cut is pulled in the closing direction due to the heat shrinkage of the bottle cap seal in the lateral direction due to the heating, so that it cannot be greatly expanded.

[0012] The object of the present invention is to provide a bottle cap seal according to claim 1, wherein the synthetic resin sheet having high heat shrinkability and the synthetic resin sheet having low heat shrinkage are provided with an adhesive provided in a streak shape in the longitudinal direction. This is achieved by being laminated and formed into a cylindrical shape.

According to this method, a streak-like fold is formed in the vertical direction due to the heat shrinkage of the bottle cap seal, and the fraud-preventing cut is pulled in the closing direction so as not to be greatly expanded.

[0014] The object of the present invention is to provide a bottle cap seal according to the first or second aspect, wherein the cylindrical shaft length is formed so as to reach below the bead of the bottle, and the notch for preventing fraud is formed below the bead. Achieved by being located.

According to this means, the fraud prevention cut must exceed the bead when the fraudulent withdrawal is performed, and the fraudulent withdrawal tends to damage the fraud prevention cut.

[0016] The object of the present invention is to provide a bottle cap seal according to any one of claims 1 to 3, wherein an edge piece of a window hole of the bottle cap seal and a peripheral portion of the canopy are laminated on a top surface of the canopy. This is achieved by being fused and integrated by heating and melting the fusion agent layer.

According to this means, the edge piece of the window hole of the bottle cap seal and the peripheral portion of the canopy are fused and integrated with the relatively thick fusion agent layer, so that no gap is formed.

The above object is achieved by a bottle cap seal according to claim 4 having an opening tape adhered to the inner surface of the bottle cap seal and extending to the edge of the window hole.

According to this method, the opening tape which easily forms a step and the peripheral portion of the canopy are fused and integrated with the fusion agent layer, so that almost no gap is formed.

The object of the present invention is to cover a bottle cap seal formed in a heat-shrinkable tubular shape from at least the peripheral portion of the inner plug fitted to the bottle mouth from the bottle mouth and heat shrink by heating. In the bottle sealing structure which is brought into close contact with the bottle cap, this is achieved by interposing an inner cap fitted into the bottle mouth above the bead of the bottle from the inner stopper inside the cap seal for the bottle.

According to this means, the bottle cap seal is thermally shrunk along the inner cap, so that no uneven portion is formed.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bottle cap seal structure according to the present invention will be described below with reference to the drawings.

1 to 9 show an embodiment (1) of a bottle cap seal and a bottle sealing structure according to the present invention.

In this embodiment, a bottle B made of a so-called one-size bottle is sealed using a bottle cap seal 1, a canopy 2, and an inner stopper 3.

As shown in FIG. 2, the bottle B of this embodiment has a shape which spreads from a mouth Ba to a main body (not shown) through a small-diameter bottle mouth Bb. Bottle mouth B
An annular groove Bc is provided on the outer peripheral surface near the mouth Ba of b. A bead Bd is provided on the outer peripheral surface slightly below the mouth Ba of the bottle mouth portion Bb.

As shown in detail in FIG. 5, the bottle cap seal 1 is made of a low heat shrinkable surface synthetic resin film 1a made of, for example, polyethylene terephthalate (PET), and the surface synthetic resin film 1a.
Layer 1b of metal such as aluminum deposited on the back of
And a heat-shrinkable back synthetic resin film 1c made of vinyl chloride resin (PVC) or the like.
b and a back side synthetic resin film 1c, which is arranged in a streak shape in the longitudinal direction (with a width of about 0.7 mm and at an interval of about 1.0 mm) and has an adhesive 1d for bonding.
As shown in FIGS. 1 and 2, the bottle cap seal 1 is formed in a cylindrical shape having a length extending from the mouth Ba of the bottle B to below the bead Bd.

Bead Bd of bottle B of bottle cap seal 1
As shown in FIGS. 1 and 2, a notch 4 for preventing fraud is provided in a portion located lower than that. The notch 4 for fraud prevention is formed by cutting a short length (approximately 1.0 mm) in the horizontal direction and arranging a large number (approximately 20) in parallel with a constant interval (approximately 1.0 mm) in the vertical direction. Are formed in four rows at appropriate intervals.

At the top of the bottle cap seal 1, FIG.
As shown in FIG. 2, a window hole 6 with a frame piece 5 having a frame structure is provided. A part of the edge piece 5 is formed as a finger hook 7 which protrudes into the window hole 6 in a chevron shape so that fingers and nails can be easily hooked. An opening tape 8 is adhered to the inner side surface (the back side of the back synthetic resin film 1c) from the finger hook portion 7 to the lower end of the bottle cap seal 1.

The canopy 2 is made of a heat-shrinkable film made of vinyl chloride resin (PVC) or the like and having a thickness of about 80 μm, and is formed in a disk shape for closing the window 6 of the bottle cap seal 1. . As shown in FIG. 7, an ethylene-vinyl acetate copolymer resin (EVA)
A heat-adhesive layer 9 having a thickness of about 20 μm is laminated by melt extrusion coating.

The inner stopper 3 comprises a main body 3a which is press-fitted into the mouth Ba of the bottle B, and a large-diameter flange 3b provided at an end of the main body 3a.

These bottle cap seals 1, canopy 2,
To seal the bottle B using the inner stopper 3, the inner stopper 3 is fitted into the mouth Ba of the bottle B by press-fitting with a stopper machine or the like, and then the canopy 2 is laminated on the upper surface of the inner stopper 3. The bottle cap seal 1 is covered, and is thermally contracted (shrinked) by spraying heated air or steam.

The heat-shrinkable bottle cap seal 1 is shown in FIG.
As shown in (1), the front synthetic resin film 1a forms streaks in the longitudinal direction from the difference in heat shrinkage between the front synthetic resin film 1a and the back synthetic resin film 1c. The folds have the appearance of a Japanese paper and are synergistic with the gloss of the metal deposition layer 1b, thereby improving the appearance and providing a very high-grade appearance.

The heat-shrinkable bottle cap seal 1 exerts a strong tensile force in the lateral direction of the fraud prevention cut 4. However, from the shape of the notch 4 for preventing fraud described above, FIG.
As shown in (a), the pulling force does not cause the fraud preventing cut 4 to expand. Therefore, as is clear from the comparison with the conventional example shown in FIG. 9B, the fraud preventing cut 4 is expanded by the heat shrinkage of the bottle cap seal 1, and the fraud preventing cut 4 is formed. The appearance of the bottle B seems to be damaged and the appearance of the bottle B becomes poor, or the outside air easily enters the inside stopper 3 from the fraud prevention cut 4 and the sealing performance of the bottle B becomes low. Nothing. In addition, with regard to the notch 4 for preventing fraud in this embodiment, since the notch 4 for preventing fraud is damaged at random by the illegal removal of the bottle cap seal 1, it becomes difficult to repair it. Is prevented. In the conventional example shown in FIG. 9 (b), the fraud prevention cuts 4 are regularly broken and repair is relatively easy. Further, the fact that the fraud-preventing cut 4 is located below the bead Bd of the bottle B also makes it easy to damage the fraud-preventing cut 4, thereby more reliably preventing fraud.

In manufacturing the bottle cap seal 1,
The edge piece 5 of the bottle cap seal 1 is
, The edge piece 5 and the peripheral edge of the canopy 2 are fused and integrated by the relatively thick fusion agent layer 9 to prevent the formation of a gap (see FIG. 6). . Therefore,
The formed gap looks like a poor seal and the appearance of the bottle B becomes poor in appearance, or the outside air easily penetrates into the inner plug 3 through the formed gap, and the sealing property of the bottle B is reduced. It will not be lowered.

The fusing agent layer 9 for fusing and integrating the edge piece 5 and the peripheral edge of the canopy 2 fills the gap between the opening tape 8 and the peripheral edge of the canopy 2 where a step is easily formed. Prevent formation reliably.

FIG. 10 shows an embodiment (2) of a bottle cap seal and a bottle sealing structure according to the present invention.

This embodiment has a ceiling structure in which the window 6 of the bottle cap seal 1 shown in FIG. 1 is closed, and the canopy 2 is omitted. An inner cap 10 has been added. Inner cap 10
Is formed in a cylindrical cap shape which is fitted from the inner stopper 3 to the bottle mouth portion Bb of the bottle B and whose lower end reaches the upper side of the bead Bd.

According to this embodiment, no uneven portion is formed on the heat-shrinkable bottle cap seal 1 by the inner plug 3 or the annular groove Bc of the bottle B. Therefore, the formed irregularities appear to contain foreign matter, and the appearance of the bottle B becomes poor in appearance, and the formed irregularities secure the expansion allowance of the bottle cap seal 1. Bottle B with internal pressure
It is not possible to effectively assist the plug pressure of the inner plug 3 and the sealing performance of the bottle B is not reduced.

Further, the thickness of the inner cap whose lower end reaches the upper side of the bead Bd of the bottle B is reduced in the level difference from the bead Bd, so that the unevenness of the bottle cap seal 1 near the bead Bd is attenuated.

As described above, in addition to the illustrated embodiment, in the embodiment (2), it is also possible to use the bottle cap seal 1 in which the window 6 of the embodiment (1) is closed with the canopy 2. is there.

Further, with respect to the embodiment (2), it is also possible to provide the notch 4 for preventing fraud in the embodiment (1).

In the above embodiment, a PET film is used as the surface synthetic resin film 1a having low heat shrinkage, but the present invention is not limited to this. For example, a non-heat-shrinkable or low-heat-shrinkable film made of polypropylene or polyvinyl chloride may be used. The back synthetic resin film 1c having high heat shrinkability is not limited to polyvinyl chloride, but may be formed of PET. Further, the surface synthetic resin film 1a having low heat shrinkability may not be laminated.

[0043]

According to the configuration of the present invention as described above,
The following effects can be obtained. (A) The bottle cap seal according to the present invention has a good external appearance because the fraud-preventing cut is pulled in the closing direction and is not greatly expanded due to the heat contraction of the bottle cap seal in the lateral direction due to heating. This has the effect of increasing the sealing performance. (B) If an unauthorized removal is performed, the injustice prevention cuts are broken at random and make it difficult to repair, so that the unauthorized use can be reliably prevented. (C) As the second aspect, since the bottle cap seal is thermally contracted by heating, the notch for fraud prevention is pulled in the closing direction and cannot be greatly expanded, so that a sense of quality can be obtained and the appearance appearance is good. This has the effect of increasing the sealing performance. (D) According to the third aspect of the present invention, when illegally withdrawn, the bead of the bottle easily damages the notch for preventing fraud, so that fraud can be reliably prevented. (E) According to the fourth aspect of the present invention, the edge piece of the window hole of the bottle cap seal and the peripheral edge of the canopy are fused and integrated with the fusion agent layer so that no gap is formed, so that the appearance appearance is good. This has the effect of increasing the sealing performance. (F) Since the gap between the opening tape that easily forms a step and the peripheral edge of the canopy is hardly formed by the fusion agent layer, even if the opening tape is provided, the appearance is good and the sealing property is good. Has the effect of becoming higher. (G) In the bottle sealing structure according to claim 6 of the present invention, the bottle cap seal is thermally shrunk along the inner cap so that the uneven portion is not formed, so that the external appearance is improved and the sealing property is improved. It is effective as a seal for low-malt beer.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bottle cap seal showing an embodiment (1) of a bottle cap seal and a bottle sealing structure according to the present invention.

FIG. 2 is a sectional view of the sealed state of FIG.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is an enlarged sectional view showing a non-heat-shrink state of FIG.

FIG. 6 is an enlarged sectional view showing a heat-shrinked state of FIG.

FIG. 7 is an enlarged sectional view showing a non-fused state of a main part of FIG. 2;

FIG. 8 is an enlarged sectional view of a main part of FIG. 2;

FIG. 9A is a front view showing a change of a main part of FIG. 1,
(B) is a front view which shows the change of the conventional principal part compared with (a).

FIG. 10 is a sectional view showing a sealed state of a bottle cap seal and a bottle sealing structure according to an embodiment (2) of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottle cap seal 2 Canopy 3 Inner plug 4 Intrusion prevention 5 Edge piece 6 Window hole 8 Opening tape 9 Fusing agent layer 10 Inner cap B Bottle Ba mouth Bb Bottle mouth Bd Bead

 ──────────────────────────────────────────────────の Continued on the front page (72) Yasuo Hashimoto Inventor Fuji Alpha Co., Ltd. 5-3-18, Imazukita, Tsurumi-ku, Osaka-shi

Claims (6)

[Claims] At least one of an inner plug fitted to a bottle mouth from a bottle mouth of a bottle, provided with a heat-shrinkable tubular shape, a part of which is cut and provided with a notch for preventing fraud. In the bottle cap seal, which is fitted on the peripheral edge and closely adhered by heat shrinkage due to heating, the fraud-prevention cuts are cut short in the horizontal direction and are arranged in a large number in parallel with a certain interval in the vertical direction. A cap seal for a bottle. 2. The bottle cap seal according to claim 1, wherein the synthetic resin sheet having high heat shrinkability and the synthetic resin sheet having low heat shrinkability are laminated via an adhesive arranged in a streak shape in the vertical direction. A bottle cap seal characterized by being formed into a cylindrical shape. 3. The bottle cap seal according to claim 1, wherein the axial length of the cylinder is formed so as to extend below the bead of the bottle, and the notch for preventing fraud is located below the bead. A bottle cap seal characterized by the following. 4. The bottle cap seal according to claim 1, wherein the edge of the window hole of the bottle cap seal and the peripheral portion of the canopy are laminated on the upper surface of the canopy. A bottle cap seal characterized by being fused and integrated by heating and melting an adhesive layer. 5. The bottle cap seal according to claim 4, further comprising an opening tape adhered to an inner surface of the bottle cap seal and extending to an edge of the window hole. 6. A bottle cap seal formed in a tubular shape having heat shrinkability is placed on at least the peripheral portion of the inner plug fitted into the bottle mouth from the bottle mouth and adhered by heat shrinkage due to heating. A bottle sealing structure, characterized in that an inner cap fitted from the inner stopper to the bottle mouth above the bottle bead is interposed inside the bottle cap seal.