JP2819015B2 - Bottle cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle cap comprising a cap body and a ring-shaped hermetic seal, and more particularly to a top wall suitable for use in a bottle having a bottle mouth with a relatively large opening. The present invention relates to a bottle cap of a type in which a part is cut open.

[0002]

2. Description of the Related Art As a conventional cap of this type, first, a ring-shaped hermetic seal is in a non-adhered state with two tear lines, and in some cases, is adhered only by a tear tab portion, and a tear is provided. When the tab is pulled up and the cap body is torn while being lifted, the seal is left in the bottle with the skirt (see Japanese Patent Publication No. 59-20553). Second, the ring-shaped seal is formed by two tear lines. When the tearing tab is pulled up and the cap body is torn while being lifted, the sealing seal is also lifted together and slips off from under the skirt part to loosen the skirt part, and the sealing seal is attached to the bottle opening with the skirt part. (See Japanese Patent Publication No. 4-36944).

[0003]

SUMMARY OF THE INVENTION However, the conventional first
According to the configuration described above, the hermetic seal remains in the bottle bottle together with the skirt portion even after opening, and it is difficult to remove the hermetic seal.In addition, when the hermetic seal is adhered to the cap body only with the tab portion, the tearing operation is performed. However, there is a disadvantage that the load in the initial stage is large and the opening operation is difficult. Further, according to the second conventional configuration, after the seal is opened, the hermetic seal comes off the bottle together with the skirt portion. However, in a series of opening operations in which the cap body is torn off while being lifted, the hermetic seal is also lifted together and the skirt portion is lifted. Since the skirt part is slid off from below and the skirt part is loosened, there is a disadvantage that the load at the time of the opening operation is large. SUMMARY OF THE INVENTION It is an object of the present invention to provide a bottle cap comprising a cap body and a ring-shaped hermetic seal which has solved these disadvantages.

[0004]

In order to achieve this object, a bottle cap according to the present invention is provided with a cap body 2.
And a cap 1 comprising a ring-shaped hermetic seal 9 to 12, wherein the cap body 2 has an opening 5 a
, A skirt portion 4 integrally formed with the top wall portion 3 and engaged with the bottle opening 5 to fix the cap 1 to the bottle, and protruding from the skirt portion 4 in the radial direction. Tear tabs 6 that extend to extend substantially along the border between the skirt portion 4 and the top wall portion 3 and continue to the side edges of the tear tabs 6 and terminate on opposite sides of the tear tabs 6. Two rip lines 7, ending at intervals
8 and the top wall 3 and the skirt 4
The sealing seals 9 to 12 in the form of a ring are interposed between the sealing lines 9 and 12 to cover the tear lines 7 and 8, respectively. The sealing seals 9 to 12 are provided at the portions corresponding to the tear lines and inside thereof. It is in a non-adhered state with the cap 1 and is in an adhering state at a predetermined portion on the side opposite to the tearing tab 6, and this adhering portion 9b, 10b, 11b, 12b is provided at one end of each of the tear lines 7,8. It does not extend to the sections 7a and 8a.

That is, the hermetic seals 9 to 9
12 is adhered to the cap body 2 at a predetermined portion 9b, 10b, 11b, 12b opposite to the tear tab 6, and for each of the severing lines 7, 8, one of the end portions 7 is provided.
It is characterized by being in a non-adhered state except for a and 8a.
In addition, the inside of each of the tear lines 7 and 8 means two continuous extending from each side edge of the tear tab 6 when the end of each of the tear lines 7 and 8 reaches the periphery of the cap body 2. Each severing line 7, 8 surrounded by severing lines 7, 8
When the end of each of the tear lines 7 and 8 does not reach the periphery of the cap body 2, it includes a virtual extension line from each of the ends and continues from each side edge of the tear tab 6. A portion that is surrounded by the two tear lines 7 and 8 that do not contact with the tear lines 7 and 8.
The outside of each of the tear lines 7 and 8 has a concept opposite to the inside described above, but the outside portion also refers to a portion that does not come into contact with each of the tear lines 7 and 8.

A bottle cap according to a second aspect of the present invention is a cap 1 comprising a cap body 2 and ring-shaped hermetic seals 9, 10, wherein the cap body 2 has an opening 5a of a bottle mouth 5. , A skirt portion 4 integrally formed with the top wall portion 3 and engaged with the bottle opening 5 to fix the cap 1 to the bottle, and protruding from the skirt portion 4 in the radial direction. A tear tab 6 extending along each side edge of the tear tab 6 and extending substantially along the boundary between the skirt portion 4 and the top wall portion 3.
Ends at an interval on the opposite side
And the ring-shaped hermetic seals 9 and 10 are interposed between the top wall 3 and the skirt 4 and the bottle 5, and the tear lines 7 and 8 are provided. The sealing seals 9 and 10 are non-adhered to the cap 1 on the corresponding portions of the tear lines and inside thereof, and are adhered on predetermined portions on the side opposite to the tear tabs 6. It is characterized in that the portions 9b, 10b do not extend to any of the end portions 7a, 8a of the respective tear lines 7, 8.

That is, the hermetic seals 9 and 10 of claim 2
Is bonded to the cap body 2 at predetermined portions 9b and 10b opposite to the tearing tab 6, and it is determined that the non-adhesive portions 9a and 10a are generally bonded to the tear lines 7 and 8 respectively. Features.

Further, the bottle cap according to claim 3 of the present invention is a cap 1 comprising a cap body 2 and a ring-shaped hermetic seal 9, wherein the cap body 2 covers an opening 5 a of a bottle mouth 5. A top wall 3, a skirt 4 formed integrally with the top wall 3 and engaging with the bottle opening 5 to fix the cap 1 to the bottle, and projecting radially from the skirt 4. A tear tab 6 extending, and the skirt portion 4 and the top wall portion 3 connected to each side edge of the tear tab 6;
And two rip lines 7, 8 extending substantially along the boundary with the tear tab 6 and terminating at an interval on the opposite side from the tear tab 6, while the top wall 3 and the skirt 4 The ring-shaped sealing seal 9 is interposed between the sealing line 9 and the bottle 5 to cover the tear lines 7 and 8. The sealing seal 9 is separated from the cap 1 at the portion corresponding to each tear line and inside thereof. In a bonded state, a predetermined portion on the side opposite to the tear tab 6 is in a bonded state, and the bonded portion 9b is connected to either end portion 7 of each of the tear lines 7,8.
a, 8a, and is characterized by being in a bonded state at predetermined portions 9c, 9d outside the respective tear lines 7, 8.

That is, the sealing seal 9 according to the third aspect of the present invention provides the cap body 2 with a predetermined portion 9 opposite to the tear tab 6.
b, and the non-adhesive portion 9a is in a non-adhesive state with respect to each of the tear lines 7 and 8, and each of the tear lines 7 and 8 is secured in order to ensure more reliable stability at the time of opening. , 8 are bonded at predetermined portions 9c and 9d.

[0010]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a plan view of the unfolded state of the cap according to the present invention, FIG. 2 is a perspective view showing the unsealing state of the cap attached to the bottle, and FIGS.
FIG. 3 is a schematic view showing the state of adhesion of the hermetic seal to the cap body.

FIG. 1 shows a cap 1 in an unfolded state before being attached to a bottle. The cap 1 has a cap body 2 made of a metal material, preferably aluminum, and the cap body 2 is provided with a top wall portion. 3 and a skirt portion 4 integrally formed therearound. When the cap body 2 is mounted on the bottle, the cap body 2 is bent substantially along the outer edge of the bottle mouth 5, and the top wall portion 3 covers the opening 5 a of the bottle mouth 5,
The bent portion corresponds to the skirt portion 4, and the skirt portion 4 engages with the bottle mouth 5 to fix the cap 1 to the bottle (see FIG. 2).

The cap body 2 has a skirt 4
A tear tab 6 is provided which extends radially from the tongue. Then, starting from each side edge of the tear tab 6, it extends substantially along a boundary between the skirt portion 4 and the top wall portion 3, in other words, a portion corresponding to the upper edge outside the bottle 5, and On the side opposite to 6, there are two tear lines 7, 8 whose ends 7a, 8a are bent in the radial direction and end at a distance. The terminal portions 7a and 8a correspond to the respective radii of the circle forming the outer periphery of the cap body 2 that are each 29 degrees apart from the center of the circle by 29 degrees with respect to the diameter passing through the center of the tear tab 6 in the width direction. Is set to

Before the cap body 2 is mounted on the bottle, ring-shaped hermetic seals 9, 10, 11, and 12 shown in FIGS. The hermetic seals 9, 10, 11, 12 are located between the top wall 3 and the skirt 4 and the bottle 5 to cover the tear lines 7, 8.

Subsequently, the hermetic seals 9, 10, 11, 12
A preferred embodiment relating to a bonding state between the cap body 2 and the cap body 2 will be described. First, the sealing seal 9 shown in FIG.
And a non-adhesive part 9a in a non-adhesive state, and a predetermined part on the opposite side to the tear tab 6 is in an adhesive state.
b, and this adhesive portion 9b is formed by
8 does not extend to any of the end portions 7a and 8a. Also,
Adhesive portions 9c and 9d are provided outside the tear lines 7 and 8 in the non-adhesive portion 9a extending from the tear tab 6 side to the adhesive portion 9b.

Note that the adhesive portion 9b is formed on the tear tab 6 in a concentric circle forming the inner and outer circumferences of the hermetic seal 9.
Is set to a range that can be cut by 13 degrees left and right from the center of the concentric circle with respect to the diameter passing through the center in the width direction. Also, the starting ends of the adhesive portions 9c and 9d on the adhesive portion 9b side are positioned corresponding to the respective radii that are similarly opened by 45 degrees.

Next, in the hermetic seal 10 shown in FIG. 4, a predetermined portion opposite to the tear tab 6 is a bonded portion 10b in a bonded state, and all other portions are non-bonded portions 10a.
It has become. That is, the non-adhesive portion 10a is a portion corresponding to each of the tear lines 7, 8 and all portions inside and outside thereof. Further, the bonding portion 10b does not extend to any of the end portions 7a and 8a of the tear lines 7 and 8, and is set in the same range as the bonding portion 9b of the hermetic seal 9 described above. That is, the hermetic seal 10 is obtained by replacing each of the bonded portions 9c and 9d of the hermetic seal 9 with a non-adhered state.

The sealing seal 11 shown in FIG. 5 is a non-adhered portion 11a in a non-adhered state with the cap body 2 at a portion corresponding to each of the tear lines 7, 8 and inside thereof, and further, outside of the tear line 7. The predetermined portion opposite to the tear tab 6 is an adhesive portion 11b in an adhesive state. The bonding portion 11b is connected to the end 8 of the tear line 8.
Although it does not extend to a, the tear line 7 is set so as to extend from the end portion 7a to a portion slightly entering the tear tab 6 side. A non-adhesive portion 1 extending from the tear tab 6 side to the tear line 8 side to the adhesive portion 11b
Outside the tear line 8 in FIG.
c is provided.

Note that the adhesive portion 11b is
In the concentric circles forming the inner and outer peripheries of the tearing tab 6, with respect to the diameter passing through the center in the width direction of the tearing tab 6, the concentric circles are set to a range cut by 13 degrees to the right and 45 degrees to the left from the center of the concentric circle. ing. In addition, the starting end of the bonding portion 11c on the bonding portion 11b side is also located at a radius corresponding to a rightwardly opened 45 °.

Further, the hermetic seal 12 shown in FIG. 6 is an adhesive portion 12b in which a predetermined portion opposite to the tear tab 6 is in an adhesive state, and all other portions are non-adhesive portions 12
a. That is, the non-adhesive portion 12a is a portion corresponding to each of the tear lines 7 and 8, and all the portions inside and outside thereof. The adhesive portion 12b is set so as not to reach the terminal end 8a of the tear line 8, but to reach the terminal end 7a of the tear line 7.
Is set in the same range as the adhesive portion 11b. That is, the hermetic seal 12 is obtained by replacing the bonded portion 11c of the hermetic seal 11 with a non-adhered state.

Next, the state of adhesion between the hermetic seals 9, 10, 11 and 12 of the above-described embodiments and the cap body 2 in a comparative example for comparing the opening force will be described with reference to FIGS. explain. Although the hermetic seal 13 shown in FIG. 7 has a non-adhesive portion 13a and an adhesive portion 13b, the range of the adhesive portion 10b of the hermetic seal 10 in FIG. 4 is enlarged. This adhesive portion 13b is cut at concentric circles forming the inner and outer peripheries of the hermetic seal 13 at respective radii that are 30 degrees left and right from the center of the concentric circle with respect to the diameter passing through the center of the tear tab 6 in the width direction. The range is set so as to reach the end portions 7a and 8a of the tear lines 7 and 8, respectively.

The sealing seal 14 shown in FIG. 8 has a non-adhesive portion 14a and an adhesive portion 14b, but the range of the adhesive portion 10b of the sealing seal 10 in FIG. 4 is further enlarged. The adhesive portion 14b is cut at concentric circles forming the inner and outer peripheries of the hermetic seal 14 at respective radii that are 45 degrees left and right from the center of the concentric circle with respect to the diameter passing through the center of the tear tab 6 in the width direction. And the end portions 7a, 8a of the tear lines 7, 8
, Respectively, to the portion slightly entering the tearing tab 6 side.

Further, the sealing seal 15 shown in FIG. 9 has a non-adhered portion 15a and an adhesive portion 15b. , 8 also adhered throughout the week. Therefore, the adhesive portion 15b does not extend to the end portions 7a, 8a of the tear lines 7, 8.

The above-described sealing seals 9, 10, 11, 12 of the present invention in the respective bonded states and the sealing seals 13, 1 of the comparative example.
FIG. 10 shows the test results of the opening force of the samples 4 and 15, the feel of the hand at the time of opening, and the liquid splash at the time of opening. The cap 1 to be tested is one for each of the hermetically sealed seals 9 to 15.
Five were prepared, and ten were used for an opening force test using a tensile tester, and five were used for a hand feel test and a liquid splash test at the time of opening by five panelists. The bottle used was a 180 g bottle for 56 mm, which was filled with hot water at 70 ° C., and each of the sealed seals 9 to 15 was stoppered with a stopper pressure of 90 kgf. Tensile tester is TENSILON / UTM-4-10 manufactured by Toyo Baldwin Co., Ltd.
0 was used. The hand feeling test and the liquid splash test were evaluated in five grades: extremely good, good, normal, slightly poor, and inferior, and were quantified with 5 being extremely good, 1 being poor, and +0.5 being an intermediate grade. .

In the opening operation, the hermetic seal 9 of the present invention is used.
Sealing seals 13, 14 of 10, 11, 12 and the comparative example are:
At the beginning of opening, the cap does not lift together with the top wall 3 of the cap body 2, and at the final stage of opening, the adhesive portions 9 b, 10 b, 11 are attached.
b, 12b, 13b, and 14b, the same point that the bottle is removed from the bottle with the skirt portion 4 is the same, but the hermetic seal 9, 10, 11, 12 of the present invention is at least one of the tear lines 7, 8. In the sealing seals 13 and 14 of the comparative example, the bonding parts 9b, 10b, 11b and 12b do not exist at the terminal parts 7a and 8a. Adhesive part 13b, 1
4b is present. On the other hand, the sealing seal 15 is lifted together with the top wall portion 3 of the cap body 2 from the initial stage of opening and slips off from the skirt portion 4 by the action of the adhesive portion 15b inside each of the tear lines 7 and 8, thereby opening the opening. In the final stage, the adhesive portion 15b on the side opposite to the tearing tab 6 comes off the bottle 5 with the skirt portion 4.

As is clear from the test results, regarding the opening force, the sealing seals 9, 10, 11, and 12 of the present invention are different from the sealing seals of the comparative example regardless of the load at the time of lifting and release. It shows that opening is possible with a load smaller than 13, 14, and 15. In addition, each of the hermetic seals 9, 10, 11, and 12 of the present invention has a good hand feeling and also has no problem with respect to liquid splash. Among them, it can be understood that the hermetic seal 9 is the most stable.

On the other hand, in the comparative example, the hermetic seal 1
Since the adhesive portions 13b and 14b extend to the end portions 7a and 8a of the tear lines 7 and 8, the release loads of the seals 3 and 14 are larger than those of the hermetic seals 9, 10, 11, and 12 of the present invention. It can be understood that the hand feeling at the time of release is inferior and that there are many liquid splashes. Further, the hermetic seal 15 of the comparative example is
Since the adhesive portion 15b is also present inside each of the tear lines 7, 8, the up load is larger than that of each of the hermetic seals 9, 10, 11, 12 of the present invention, and the hand feel at the time of up is slightly inferior. It can be understood.

[0027]

As apparent from the above description, according to the present invention, a smooth and stable opening operation can be performed with a small opening force.

[Brief description of the drawings]

FIG. 1 is a plan view of a deployed state of a cap according to the present invention.

FIG. 2 is a perspective view showing an opening operation state of a cap attached to the bottle.

FIG. 3 is a schematic diagram showing a state of adhesion of a hermetic seal to a cap body according to the present invention.

FIG. 4 is a schematic view showing another embodiment of the bonding state.

FIG. 5 is a schematic view showing another embodiment of the bonding state.

FIG. 6 is a schematic diagram showing another embodiment of the bonding state.

FIG. 7 is a schematic view showing a state of adhesion of a hermetic seal to a cap body in a comparative example.

FIG. 8 is a schematic view showing another form of the bonding state.

FIG. 9 is a schematic view showing another form of the bonding state.

FIG. 10 is a view showing test results on the opening force of the sealing seal according to the present invention and the sealing seal of the comparative example, the feel of the hand at opening, and the liquid splash at opening.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cap 2 Cap main body 3 Top wall part 4 Skirt part 5 Bottle opening 5a Opening part 6 Tearing tab 7,8 Tearing line 7a, 8a Terminal part 9,10,11,12,13.14,15 Hermetic seal 9a, 10a, 11a, 12a, 13a, 14a, 15
a Non-adhesive parts 9b, 9c, 9d, 10b, 11b, 11c, 12b,
13b, 14b, 15b contact Chakububun

Claims (3)

(57) [Claims] 1. A cap comprising a cap main body and a ring-shaped hermetic seal, wherein the cap main body is formed integrally with the top wall portion covering an opening portion of the bottle mouth, and is formed on the bottle mouth. A skirt that engages to secure the cap to the bottle, a tear tab extending radially from the skirt, and a skirt and a top wall that are continuous with each side edge of the tear tab. On the opposite side of the tear-off tab extending substantially along the boundary of the top wall and the skirt and between the bottle and the bottle. The ring-shaped hermetic seal intervenes to cover each of the tear lines,
The hermetic seal is in a non-adhered state with the cap at each of the tear line corresponding portions and inside thereof, and is in an adhesive state at a predetermined portion on the side opposite to the tear tab, and the adhesive portion is any one of the tear lines. A bottle cap characterized in that it does not extend to one end. 2. A cap comprising a cap main body and a ring-shaped hermetic seal, wherein the cap main body is formed integrally with the top wall portion covering the opening of the bottle opening, and the cap body is formed on the bottle opening. A skirt that engages to secure the cap to the bottle, a tear tab extending radially from the skirt, and a skirt and a top wall that are continuous with each side edge of the tear tab. On the opposite side of the tear-off tab extending substantially along the boundary of the top wall and the skirt and between the bottle and the bottle. The ring-shaped hermetic seal intervenes to cover each of the tear lines,
The hermetic seal is in a non-adhered state with the cap at each of the tear line corresponding portions and inside thereof, and is in an adhesive state at a predetermined portion on the side opposite to the tear tab, and the adhesive portion is any one of the tear lines. A bottle cap characterized by not reaching the end. 3. A cap comprising a cap body and a ring-shaped hermetic seal, wherein said cap body has a top wall portion covering an opening portion of a bottle mouth, and a bottle wall formed integrally with the top wall portion. A skirt that engages to secure the cap to the bottle, a tear tab extending radially from the skirt, and a skirt and a top wall that are continuous with each side edge of the tear tab. On the opposite side of the tear-off tab extending substantially along the boundary of the top wall and the skirt and between the bottle and the bottle. The ring-shaped hermetic seal intervenes to cover each of the tear lines,
The hermetic seal is in a non-adhered state with the cap at each of the tear line corresponding portions and inside thereof, and is in an adhesive state at a predetermined portion on the side opposite to the tear tab, and the adhesive portion is any one of the tear lines. A bottle cap which does not extend to an end portion, and which is in a bonded state at a predetermined portion outside each of the tear lines.