JPH09226816A - Sealing structure for glass bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an inner stopper of a glass bottle filled with refined sake or the like from being pushed up by internal pressure without using a conventional deluxe crown cap, and improve aptness in mounting, safety and unsealing. SOLUTION: An inner stopper 3 is fitted into an opening 2a at the mouth of a glass bottle, and a heat-shrinkable cap seal 1 is fitted to cover the peripheral face 2b of the mouth, extending from the peripheral edge of the top of the inner stopper, and furthermore the side of the cap seal 1 contacting with the glass bottle is formed of a resin material that is hardly slip on the surface of the glass bottle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for sealing a mouth of a glass bottle filled with sake or the like and distributed.

[0002]

2. Description of the Related Art Conventionally, the mouth of a glass bottle 2 for sake is referred to as a deluxe crown made of an aluminum material after an inner plug 3 is fitted to the mouth of the glass bottle as shown in FIGS. It has a structure in which it is sealed and sealed by the sealing tool 10. This structure was also necessary to prevent the inner stopper 3 from being pushed up when the internal pressure of the glass bottle 2 becomes high.

[0003]

However, since the above-mentioned conventional deluxe crown is used by tearing it from the notch 11 shown in the drawing, a large force is required to tear the aluminum material when opening. At the same time, it was necessary to take care not to injure a finger or the like due to the torn aluminum pieces.

Further, it is necessary to process the aluminum material into a complicated shape, which complicates the manufacturing process of the closure.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a glass bottle sealing structure with a cap seal having a simple structure and easy to process.

[0006]

According to the present invention, there is provided a structure for solving the above-mentioned problems, in which an inner stopper is fitted in an opening portion of a mouth portion of a glass bottle and a circumference of the mouth portion from a peripheral edge of a top surface portion of the inner stopper. A cap seal formed of a heat-shrinkable synthetic resin film is attached so as to cover the surface, and the surface of the cap seal that comes into contact with the glass bottle does not easily slip on the surface of the glass bottle. It is a sealed structure of the formed glass bottle.

The surface (inner surface) of the cap seal which comes into contact with the surface of the glass bottle is a glass bottle sealing structure formed of polyvinyl chloride resin containing a plasticizer.

The glass bottle sealing structure of the present invention has a structure in which the inner surface of the cap seal, which is in contact with the surface of the glass bottle and does not slide easily, is in close contact with the peripheral surface of the mouth of the glass bottle due to heat shrinkage. Even if the internal pressure rises and the force that pushes up the inside plug is exerted, it will not easily slip up or slip out.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a glass bottle sealing structure of the present invention formed by mounting a tubular heat-shrinkable cap seal 1. Reference numeral 2 is a glass bottle filled with sake or the like 8 and 3 is an inner stopper made of synthetic resin or the like inserted into the mouth of the glass bottle 2.

The tubular heat-shrinkable cap seal 1 heat-shrinks from the top surface portion of the inner plug 3 fitted in the mouth portion of the glass bottle 2 to below the convex portion 2C provided on the mouth peripheral surface 2b. As a result, the tubular film forming the heat-shrinkable cap seal 1 is formed in close contact, and the upper end portion is bent inward by heat shrinkage. The top plate 4 that closes the upper surface of the heat-shrinkable cap seal is bonded to the bent portion. 9 is a perforation for cutting and opening the heat-shrinkable cap seal 1.

The tubular film forming the heat-shrinkable cap seal 1 is a heat-shrinkable film 5 formed of a vinyl chloride resin containing a plasticizer that is in close contact with the surface of the glass bottle 2 and does not easily slip. And a non-heat-shrinkable polyester film 6 formed by vapor-depositing a metal such as aluminum so as to have a luster, and laminated with an adhesive 7 applied at substantially regular intervals in the circumferential direction of the tubular film to form a laminated film. The structure is such that the vinyl chloride resin is processed into a cylindrical shape so that it is on the inside. Therefore, when it comes into close contact with the mouth of the glass bottle due to heat shrinkage, the non-heat-shrinkable polyester film 6 having a metallic luster on the front side is formed in a wavy (folded) shape as shown in FIG.

In the glass bottle sealing structure of the present invention, as described above, the heat-shrinkable cap seal 1 whose inner surface is in close contact with the glass surface and does not slip easily is inserted into the mouth of the glass bottle 2 as the inner plug 3. Since it is formed by pressing the upper surface of the bottle and contacting the peripheral surface 2b of the mouth portion, the internal pressure of the glass bottle 2 becomes high by filling warmed sake etc. 8 and the force of pushing up the inner stopper 3 from the inside is obtained. Even if it works, the inner plug 3 is not easily pushed up. Furthermore, in the above-described embodiment, the lower end of the heat-shrinkable cap seal 1 is in close contact with the lower portion of the convex portion 2C provided on the peripheral surface of the mouth of the glass bottle, and therefore the effect of preventing the inner stopper 3 from being pushed up is excellent. There is.

Further, in the example of the above-mentioned embodiment, the heat-shrinkable film of vinyl chloride resin containing the plasticizer is used on the inner surface of the heat-shrinkable cap seal 1, but the structure of the present invention is not limited to this. Instead of one, for example, a polyester or polystyrene heat-shrinkable film may be used,
The inner surface may be coated with a glass bottle surface and a non-slip resin. However, a vinyl chloride resin containing a plasticizer is preferable because it is softened by heat during heat shrinkage and easily adheres to the surface of the glass bottle. As the plasticizer, known ones such as dioctyl phthalate, dibutyl phthalate and dioctyl adipate are used, and the addition amount is preferably 3 to 30% by weight.

Although it is not a requirement that the non-heat-shrinkable polyester film 6 having metallic luster be laminated as the constitution of the heat-shrinkable cap seal 1 used in the present invention, the product can be obtained by laminating the film. It is preferable because it can give a high-grade feeling and the use of a synthetic resin cap seal does not lower the commercial value. Furthermore, it is not a condition to provide the top plate 4 on the heat-shrinkable cap seal 1.

[0015]

As described above, according to the glass bottle sealing structure of the present invention, it is possible to prevent the inner stopper from being pushed up even if the internal pressure of the glass bottle becomes high, as in the conventional deluxe crown, and to cause the heat shrinkage. Since it is composed of a tubular cap seal made of synthetic resin, it can be easily opened by perforation or the like. Further, the cap seal can be attached simply by covering the mouth of the glass bottle and heating.

[Brief description of drawings]

FIG. 1 is a perspective view showing the present invention.

FIG. 2 is a sectional view showing the present invention.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a front view showing a conventional example.

FIG. 5 is a sectional view of FIG. 4;

[Explanation of symbols]

1: Heat shrinkable cap seal, 2: Glass bottle, 2b: Peripheral surface of mouth of glass bottle 3: Inner stopper

Claims (2)

[Claims] 1. A heat-shrinkable synthetic resin in which an inner stopper is fitted into the opening (2a) of the mouth of a glass bottle, and the peripheral surface of the mouth (2b) is covered from the peripheral edge of the top surface of the inner stopper (3). A tubular cap seal (1) made of a film is heat-shrinked, and a contact surface of the heat-shrinkable cap seal (1) with a glass bottle is formed of a resin that is hard to slip on the surface of the glass bottle. A sealed structure for glass bottles. 2. The sealing of a glass bottle according to claim 1, wherein the contact surface of the heat-shrinkable cap seal (1) with the surface of the glass bottle is made of polyvinyl chloride resin containing a plasticizer. Construction.