JP3087983U - Sealed glass bottle packing and sealed glass bottle cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealed glass bottle packing capable of sufficiently responding to a bottle internal pressure when a content in a sealed glass bottle changes between a high-temperature region and a cooling region, and We propose a cap for sealed glass bottle using packing. A sealing glass bottle packing made of a semi-rigid synthetic resin material and made of a disc-shaped packing body, an outer side seal portion, and an inner side seal portion, is sealed with an aluminum cap. The outer peripheral edge 5a of the gasket 9 is engaged with the engaging projection 8 projecting from the inside of the cylindrical section 7 without being bonded to the back side of the canopy section 6.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a seal for a sealed glass bottle, which is attached to a cylindrical mouth which is an entrance and exit of the contents of a glass bottle for sealingly containing contents such as sake, whiskey and carbonated beverage, and seals the mouth of the glass bottle. The present invention relates to a cap for a sealed glass bottle equipped with.

[0002]

[Prior art and its problems]

 Conventional technology that is the closest to the present invention, such as a cap attached to the mouth of a glass bottle that seals and stores effervescent contents such as carbonated beverages, and a packing interposed between the mouth of the glass bottle and the cap. Examples thereof include those having a structure disclosed in Japanese Utility Model Laid-Open No. 62-38856.

Referring to FIG. 9, the prior art will be described with reference to FIG. 9. As in the present invention, a disc-shaped canopy portion 20 formed of an aluminum material and a downward extending from the outer peripheral edge of the canopy portion are provided. On the back side of the canopy portion 20 of the cap 22 composed of a cylindrical portion 21, a disk-shaped liner body 23 similar to the present invention, and a mouth portion of a glass bottle protruded downward from the outer peripheral edge of the liner body. An outer side seal portion 24 that is an outer annular ridge that is pressed against the outer peripheral surface; a top seal portion 25 that is a pressed contact portion that is pressed against the upper end surface of the mouth of the glass bottle; And a liner 27 for a sealed glass bottle having an inner side seal portion 26 which is an inner annular ridge that is protrudingly provided and pressed against the inner peripheral surface of the mouth of the glass bottle.

In forming the liner 27 for a sealed glass bottle on the cap 22, in this conventional technique, a fixed amount of synthetic resin such as polyethylene is supplied into the cap 22 and formed by molding with a molding punch. The liner 27 is formed integrally with the cap 22 by an insell molding method. According to this inciel molding method, various ideas can be applied to the shape of the liner 27, and various ideas have been applied to the shape of the liner to improve the sealing performance. It was still unsatisfactory to provide sufficient sealing to the internal pressure of the bottle when the contents inside the container changed between the high-temperature region and the cooling region.

The present invention provides a packing for a sealed glass bottle capable of sufficiently responding to the internal pressure of the bottle when the content in the sealed glass bottle changes between a high temperature region and a cooling region, and It is intended to propose a cap for a sealed glass bottle used.

[0006]

[Means for Solving the Problems]

 The invention according to claim 1 is provided with a disk-shaped packing body 1 and an outer peripheral edge of the packing body 1 which are made of a semi-rigid synthetic resin material and are denoted by reference numerals in the drawings showing the embodiment. An outer side seal portion 2 which is an outer annular ridge projected downward and pressed against the outer peripheral surface of the mouth portion of the glass bottle, a top seal portion 3 which is a press contact portion pressed against the upper end surface of the mouth portion of the glass bottle, and a top seal portion And an inner side seal portion 4 which is an inner annular ridge and protrudes downward from the packing body 1 and presses against the inner peripheral surface of the mouth portion of the glass bottle.

According to a second aspect of the present invention, there is provided the sealing glass bottle packing 5 according to claim 1, wherein the durometer hardness of the sealing glass bottle packing 5 made of a semi-rigid synthetic resin material is D45 to D60. Related.

According to a third aspect of the present invention, there is provided a cap having a disc-shaped canopy 6 formed of an aluminum material and a cylindrical portion 7 extending downward from an outer peripheral edge of the canopy 6. The sealing projection according to claim 1, wherein the engagement projection 8 is concavely formed inward on the inner peripheral surface of the cylindrical section 7 so as to protrude into the inner circumference of the cylindrical section 7. The present invention relates to a sealed glass bottle cap 9 in which the glass bottle packing 5 is not adhered to the back side of the canopy portion 6 and is locked by the packing outer peripheral edge 5a.

FIG. 1 shows an embodiment of a sealed glass bottle cap 9 according to the present invention, which is made of a thin aluminum material and has an outer diameter of 29.7 mm and an outer portion of the canopy 6. The cylindrical portion 7 is formed so as to hang down about 19.4 mm from the peripheral edge, and is depressed inward toward the upper side of the cylindrical portion 7 so as to be concave. At a position of 9 mm, an engaging projection 8 is formed on the inner peripheral surface of the cylindrical portion 7 so as to project in a convex manner. Reference numeral 10 denotes a reinforcing rib appropriately formed on the lower side of the cylindrical portion 7.

FIG. 2 shows an embodiment of the packing for a sealed glass bottle 5 according to the present invention, which is formed of a synthetic resin material such as polyethylene and has a durometer hardness of D45 by adding a plasticizer or the like. It is formed to have a semi-rigidity of about D60 (JIS K7215-1986), of which about D49 is optimal.

As described above, in the present invention, the cap 5 needs to be formed of a semi-rigid synthetic resin material, and the reason will be described later.

A disk-shaped packing body 1 formed of a semi-rigid synthetic resin material, having a thickness of 0.8 mm and having a diameter of about 18.6, and a downwardly facing outer peripheral edge of the packing body 1. An outer side seal portion 2 which is an outer annular ridge protruding about 2.9 mm from the upper end surface and pressed against the outer peripheral surface of the mouth of the glass bottle, and a press contact portion pressed against the upper end surface of the mouth of the glass bottle. A top seal portion 3 having a thickness of about 1.6 mm, and an inner annular ridge that is provided inside the top seal portion 3 and protrudes downward by about 2.4 mm from the packing body 1 and presses against the inner peripheral surface of the mouth of the glass bottle. As shown in FIG. 4, the inner peripheral surface of the outer side seal portion 2 has a taper surface 11 which is slightly sharper than 45 degrees. An annular small ridge 12 of about 0.1 mm is formed on the flat surface, and the outer peripheral surface of the inner side seal portion 4 is a tapered surface 13 having an obtuse angle slightly larger than 45 degrees.

FIG. 3 shows a state in which the sealed glass bottle packing 5 is mounted on the sealed glass bottle cap 9 having the above-described structure, and is to be fitted to the mouth portion 15 of the glass bottle 14.

That is, as shown in FIG. 3 or FIG. 4, the packing 5 for the sealed glass bottle is locked on the back side of the canopy portion 6 of the cap 9 for the sealed glass bottle. The outer peripheral edge 5a of the packing 5 is engaged with an engaging projection 8 projecting from the inner peripheral surface of the cylindrical portion 7. In this engagement sequence, an engagement projection 8 is previously provided on the cylindrical portion 7, and a semi-rigid packing 5 may be engaged with this by slightly applying a forcing force. The cap 9 may be placed along the back side of the canopy 6, and then the engagement protrusion 8 may be formed on the cylindrical portion 7 so that the outer peripheral edge of the packing 5 is locked to the engagement protrusion 8. Good.

As a feature of the present invention, as apparent from the above description, the packing 5 is not fixed to the back side of the canopy 6 of the cap 5 by an adhesive or the like, but is engaged by the above-mentioned engaging means. It is to stop. The reason will be described later.

With the packing 5 locked on the cap 9 as described above, the cap 9 is fitted to the opening 15 of the glass bottle 14, and the cap 9 is connected to the glass bottle opening by a cap tightening machine (not shown). 15 will be attached. That is, the cylindrical portion 7 of the cap 9 before being attached to the mouth portion 15 of the glass bottle 14 is a cylinder having an inner diameter slightly larger than the outer diameter of the screw thread 16 of the mouth portion 15. The top cover 6 is pressed into the glass bottle opening 15 with a pressure of 110 to 160 kgf by the top pressure of a cap tightening machine (not shown). At this time, the top seal portion 3 of the packing 5 presses against the upper end surface 15a of the glass bottle opening 15, and the annular small ridge 12 formed on the seal portion 3 particularly strongly presses against the upper end surface 15a to improve the sealing property. become. Further, the tapered surface 11 of the outer side seal portion 2 comes into contact with the outer peripheral surface 15a of the distal end portion of the glass bottle mouth portion 15. Then, the cylindrical portion 7 of the cap 9 is further pressed and deformed by the side pressure of a cap tightening machine (not shown) toward the thread 16 of the glass bottle mouth portion 15 so that the cylindrical portion 7 is strongly pressed against the thread 16. The tapered surface 11 of the outer side seal portion 2 of the packing 5 is pressed against the rounded outer peripheral portion 15b of the tip end portion of the glass bottle mouth portion 15 by screwing. As shown in FIG. 5, the tapered surface 11 is deformed from its linear state to conform to the roundness of the outer peripheral edge 15b to enhance the sealing performance, and at the same time, the taper of the inner side seal portion 4 of the packing 5 is improved. The surface 13 also comes into pressure contact with the rounded inner peripheral edge 15c at the tip of the glass bottle mouth 15 from its linear state, and as shown in FIG. 5, the tapered surface 13 follows the roundness of the inner peripheral edge 15c. Deformation to become and this to improve the sealing properties.

As described above, according to the present invention, between the packing 5 and the glass bottle mouth portion 15, the sealing is performed by the triple structure of the top seal portion 3, the outer side seal portion 2, and the inner side seal portion 4. Therefore, the sealing performance of the glass bottle mouth 15 is reliably and firmly performed, and as described below, various superior operational effects are obtained as compared with the conventional sealed glass bottle liner shown in FIG. Demonstrate.

FIG. 6 to FIG. 6 show differences in operation and effect between the cap 9 equipped with the sealing glass bottle packing 5 of one embodiment of the present invention and the conventional example in which the sealing glass bottle liner shown in FIG. 9 is integrally formed with the cap. 8 will be described.

6 to 8 show an embodiment of the present invention, and column B shows the prior art shown in FIG.

The case where the alcoholic beverage is filled in the glass bottle 14 will be described as an example. When the alcoholic content of the alcoholic beverage is 20 degrees or less, the glass bottle 14 is heated to 60 ° C. to 70 ° C. Sterilized. When this alcoholic beverage is bottled in a glass bottle, the shape of the cap changes in the process of heating and cooling. There are three types of this shape change depending on the heating situation.

The first type is how the packing deforms when filling a glass bottle 14 with a pre-heated alcoholic beverage, and the second type is at room temperature or low temperature. Filling the maintained unsterilized alcoholic beverage into the glass bottle 14, sealing the cap, and then heating (paste-rising) the entire glass bottle 14, what is the deformation state of the packing? This heating method is used when it is desired to confine the scent inside the glass bottle 14 during bottling.) In the third type, the same as in the second type, the scent is kept at room temperature or low temperature. This is a case where the glass bottle 14 is filled with sterilized alcoholic beverages, the cap is sealed, and the whole glass bottle 14 is heated (paste-rised). What is the deformation state of the packing when the product is an alcoholic beverage having an effervescent property?

The first type will be described with reference to FIG. 6. The preheated alcoholic beverage naturally expands thermally. When the thermally expanded alcoholic beverage is filled into the glass bottle 14, The remaining air inside is also sealed in a heated state, so that when cooled after filling, the volume of the alcoholic beverage and the residual air is reduced, and the inside of the glass bottle 14 falls into a negative pressure state. .

At this time, according to row A showing one embodiment of the present invention, first, as shown in (a), immediately after filling, there is not much change from room temperature filling, and the cap 9 does not deform. However, when the inside of the bottle is cooled thereafter, the inside of the bottle 14 becomes negative pressure. At this time, according to the present invention, since the packing body 1 is not bonded to the canopy part 6 of the cap 9 at all, as shown in FIG. Due to the negative pressure, the bottle is drawn into the inner part of the bottle 14, and a gap P of a vacuum portion is generated between the canopy part 6 of the aluminum cap 9 and the packing body 1 as shown in the figure. For this reason, the tapered surface 13 of the inner side seal portion 4 integrated with the packing body 1 is more strongly pressed against the inner peripheral edge portion 15c at the tip end portion of the bottle mouth portion 15, thereby increasing the adhesion between the two and increasing the sealing performance. be able to. Moreover, the canopy 6 of the cap 9 is not deformed as shown.

As described above, the packing body 1 is deformed so as to be drawn into the inner side of the bottle due to the negative pressure inside the bottle, and at this time, the packing body 1 is half as described above. Since the packing 5 is formed of a hard synthetic resin material, the packing 5 does not fall into the inside of the bottle, and the sealing property can be sufficiently exhibited.

On the other hand, in the conventional example (FIG. 9), according to the row B in FIG. 6, as shown in FIG. Absent . Thereafter, when the bottle is cooled, the inside of the bottle becomes negative pressure. At this time, according to the conventional example, since the canopy portion 20 of the cap 22 and the liner 27 are integrally formed by the in-shell molding method, as shown in FIG. The inner side seal portion 26 has a close contact with the inner peripheral edge portion 15c of the front end portion of the bottle opening portion 15 without deformation such as being drawn into the inner portion of the bottle. It does not increase and the sealing performance does not increase.

The second type will be described with reference to FIG. 7. As described above, an alcoholic beverage maintained at a room temperature or a low temperature is filled and sealed in the bottle, and then heated from the outside of the bottle. The residual air inside expands together. The coefficient of thermal expansion increases as the alcohol content increases, but depending on the residual air remaining in the bottle, when the alcohol content exceeds 15 degrees, the inside of the bottle becomes a large positive pressure, and the alcohol content inside the bottle increases. As the beverage cools, the volume of the alcoholic beverage and residual air shrinks, creating a negative pressure inside the bottle.

At this time, according to row A showing one embodiment of the present invention, as shown in (a), when the bottle filled with the alcoholic beverage is heated from the outside as shown in FIG. Due to the residual ratio, the inside of the bottle becomes a large positive pressure, and the bottle is deformed so as to push up the aluminum cap 9. When the alcoholic beverage is subsequently cooled, the pressure inside the bottle becomes negative. At this time, according to the present invention, since the packing body 1 is not bonded to the canopy portion 6 of the cap 9 at all, only the packing body 1 of the packing 5 is formed by the negative pressure inside the bottle as shown in FIG. Is drawn into the inner side of the bottle, and a gap P of a vacuum portion is generated between the aluminum cap 9 and the packing body 1 which are kept pushed up as shown in the figure. For this reason, the tapered surface 13 of the inner side seal portion 4 integral with the packing body 1 is more strongly pressed against the inner peripheral edge portion 15c at the tip end portion of the bottle mouth portion 15, thereby increasing the adhesion between the two and increasing the sealing performance. be able to. Moreover, the canopy portion 6 of the cap 9 is deformed to be slightly rounded to the outside as shown in the figure, but the rounded shape rather improves the appearance.

Also, as described above, even if the packing body 1 is deformed so as to be drawn into the inside of the bottle due to the negative pressure inside the bottle, the packing body 1 is semi-rigid as described above. Since the packing 5 is formed of a resin material, the packing 5 does not fall into the bottle during this deformation, and the sealing performance can be sufficiently exhibited.

On the other hand, according to the row B of FIG. 7 showing the prior art, when a bottle filled with a sealed alcoholic beverage is heated from the outside, the alcohol content and the residual air residual ratio cause the inside of the bottle to be heated. As a result, the aluminum cap 22 may be deformed so as to push up the aluminum cap 22 as shown in FIG. This point is the same phenomenon as the present invention, but the phenomenon when the alcoholic beverage is cooled afterwards and the inside of the bottle becomes negative pressure is significantly different.

That is, according to the conventional example, since the canopy portion 20 of the cap 22 and the liner 27 are integrally formed by the insier molding method, the central portion of the liner 27 is formed as shown in FIG. The inner side seal portion 26 enhances the adhesion to the inner peripheral edge portion 15c at the tip end portion of the bottle mouth portion 15 without being deformed by being supported by the portion 20 and being drawn into the inner portion of the bottle. There is no increase in hermeticity.

Moreover, when the aluminum cap 22 is deformed by thermal expansion so that the aluminum cap 22 is greatly pushed up as shown in (a), even if the inside of the bottle becomes a negative pressure, it is restored from the expanded and deformed state. On the other hand, the liner 27 on the back side of the canopy 20 of the cap 22 contracts after cooling and attempts to return to the original position. 20 are formed integrally on the back side, stress cracks are likely to occur in the central portion of the liner 27 and the seal portions 24, 25, 26 due to the difference in the coefficient of thermal expansion and the restoration ratio between the two. Cause air leakage.

The third type will be described with reference to FIG. 8. When an effervescent alcoholic beverage is filled and sealed in the bottle, the inside of the jar 14 always receives a positive pressure due to its effervescence. However, when heated from outside the bottle after that, the positive pressure inside the bottle rises sharply due to the influence of the sparkling alcoholic beverage, and the aluminum cap is pushed up sharply upward. In this case, if the aluminum cap is not completely screwed into the screwed portion of the bottle, the cap may not be able to withstand the large positive pressure inside the bottle and may be blown off from the bottle.

According to row A showing one embodiment of the present invention, these phenomena are firstly sealed and filled with a sparkling alcoholic beverage, as shown in FIG. Due to the large positive pressure inside the bottle, the aluminum cap 9 and the packing 5 are pushed up significantly at the same time, but after cooling, the aluminum cap 9 remains in a convexly expanded shape, whereas The packing 5 is restored so that the normal positive pressure inside the bottle is maintained, and as shown in (b), the packing 5 is slightly swelled upward, and the packing 5 is moved toward the canopy 6 of the cap 9. It is in a free state through a slight gap P. This is obviously a phenomenon caused by the fact that the packing body 1 is not bonded to the canopy 6 of the cap 9 at all, as described above.

When the packing body 1 is free from the canopy 6 of the cap 9 as described above, the sealing performance of the inner side seal portion 4 with respect to the inner peripheral surface of the bottle opening is slightly reduced. The sealing property of the top seal part 3 and the outer side seal part 2 is maintained sufficiently by the close contact with the bottle mouth part, because the packing body 1 is formed of a semi-rigid synthetic resin material. can do.

On the other hand, according to row B of FIG. 8 showing the prior art, as shown in FIG. 8A, when the sparkling alcoholic beverage is sealed and filled, and thereafter heated from the outside, the inside of the bottle becomes large. Due to the positive pressure, both the aluminum cap 22 and the liner 27 integral therewith expand greatly in a convex shape, but after the inside of the bottle is cooled, the aluminum cap 22 remains in the convexly expanded shape. On the other hand, the liner 27 tends to shrink due to cooling. However, since the liner 27 is integrally formed on the canopy portion 20 of the aluminum cap 22 by the insield molding method, the thermal expansion coefficient of the aluminum cap 22 and the liner 27 is Due to the difference in the shrinkage ratio, stress cracks occur in the liner 27, large stress accumulates in the seal portion, and cracks occur. This can cause beverage leakage and air leakage.

As described above, according to the present invention, when contents such as alcoholic beverages are sealed and filled in the glass bottle, when the contents in a heated state are filled in the glass bottle, or when the contents are filled in the glass bottle. When heating in a heated state, or when these contents are foaming contents and a large positive pressure is applied to the inside of the bottle, a good condition is always maintained between the heating area and the cooling area. It can maintain hermeticity.

[0037]

[Effect of the invention]

 According to the packing for a sealed glass bottle according to the invention of claim 1, since the disk-shaped packing body, the outer side seal portion, and the inner side seal portion are formed integrally with a semi-rigid synthetic resin material, In addition to sufficiently exhibiting pressure resistance and sealing properties, sufficient durability can be exhibited at all times in the range from the heating region to the cooling region inside the bottle.

In the invention according to claim 2, the durometer hardness of the sealing glass bottle packing made of semi-rigid synthetic resin material is D45 to D60, which is excellent in both pressure resistance and sealing property. It has the effect. If the hardness of the packing is D45 or less, the sealability can be expected, but it does not have sufficient pressure resistance, so it always has sufficient durability in the range from the heating area to the cooling area inside the bin. May not be able to demonstrate. When the hardness of the packing is D60 or more, it is naturally difficult to exhibit the sealing property.

According to the cap for a sealed glass bottle according to the third aspect, a disc-shaped canopy formed of aluminum material and a cylindrical portion extending downward from the outer peripheral edge of the canopy are provided. The sealing glass according to claim 1, wherein the cap has a concave portion inwardly recessed in the cylindrical portion of the cap, thereby forming an engaging projection projecting in a convex shape on the inner peripheral surface of the cylindrical portion. Since the bottle packing is not bonded to the back side of the canopy, but is locked by the outer periphery of the packing, the heating area inside the bottle can be maintained while maintaining sufficient mounting of the packing on the cap. It is possible to achieve good thermal expansion and shrinkage due to temperature change inside the bottle from the cooling zone to the cooling zone, or follow-up deformation of the packing due to strong positive pressure inside the bottle independently of the cap without being hindered by the cap. so As a result, the seal between the inside of the bottle and the cap can be maintained well even under severe conditions.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal front view of one embodiment of a sealed glass bottle cap according to the present invention.

FIG. 2 is a partial longitudinal perspective view of one embodiment of the packing for a sealed glass bottle according to the present invention.

FIG. 3 is a front view showing a state where the packing for the sealed glass bottle is mounted on the cap for the sealed glass bottle according to the present invention, and the packing is mounted on the glass bottle;

FIG. 4 is a partial cross-sectional front view of the sealed glass bottle cap according to the present invention with packing installed.

FIG. 5 is a partial cross-sectional front view of the state in which the cap for a sealed glass bottle according to the present invention is mounted on the glass bottle.

FIG. 6 is a comparative explanatory diagram for explaining a difference in operation and effect between the row A according to the embodiment of the present invention and the row B according to the related art.

FIG. 7 is a comparative explanatory diagram for explaining a difference in operation and effect between the row A according to the embodiment of the present invention and the row B according to the related art.

FIG. 8 is a comparative explanatory diagram for explaining a difference in operation and effect between the row A according to the embodiment of the present invention and the row B according to the related art.

FIG. 9 is a longitudinal sectional front view of a prior art sealed glass bottle cap.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packing main body 2 Outer side seal part 3 Top seal part 4 Inner side seal part 5 Packing for sealing glass bottle 6 Canopy part 7 Cylindrical part 8 Engagement protrusion 9 Cap for sealing glass bottle

Claims (3)

[Utility model registration claims] 1. A disk-shaped packing body made of a semi-rigid synthetic resin material, and an outer annular ridge protruding downward from an outer peripheral edge of the packing body and pressed against an outer peripheral surface of a mouth portion of a glass bottle. An outer side seal portion, a top seal portion, which is a press contact portion that presses against the upper end surface of the mouth portion of the glass bottle, and a projection inside the top seal portion and protruding downward from the packing body to press against the inner peripheral surface of the mouth portion of the glass bottle. A sealing glass bottle packing comprising: an inner side sealing portion which is an inner annular ridge. 2. A durometer hardness of a sealing glass bottle packing made of a semi-rigid synthetic resin material is D45 to D60.
The packing for a sealed glass bottle according to claim 1, which is: 3. A cap-shaped concave portion formed in an aluminum material, comprising: a disk-shaped canopy portion; and a cylindrical portion extending downward from an outer peripheral edge of the canopy portion. Thereby, an engaging protrusion projecting in a convex shape is formed on the inner peripheral surface of the cylindrical portion, and the packing for a sealed glass bottle according to claim 1 is bonded to the engaging protrusion on the back side of the canopy portion. A cap for a sealed glass bottle that is adapted to be locked by the outer peripheral edge of the packing without any problems.