JPS6348533Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to carbonated beverage containers for sparkling soft drinks (ciders, ramune, etc.), particularly to synthetic resin ramune containers.

(Prior Art) Conventionally, carbonated drinks such as cola, cider, and ramune are generally made in glass bottles.

This glass bottle has a composition that is easy to melt, can be made into any shape, uses cheap raw materials, and is made using a press-blow method. However, if the formed glass bottle is rapidly cooled (left to cool) as it is, residual strain will occur, resulting in a brittle product.In order to remove this strain, it may be slowly cooled from 650℃ to room temperature for about an hour, or hot-processed. Therefore, the molding defect rate is high, and inspection and management of defects, etc. is required.

In addition, accidents involving carbonated drinks and other products in glass containers being damaged in the market are becoming more and more common, and safety has become an issue, and plastic-coated bottles are now being introduced as part of the glass containers.

For this reason, currently containers for carbonated drinks, etc. are also resource-saving.
Containers made of synthetic resin have been replaced in order to save energy and reduce costs. This synthetic resin container is made of PVC (polyvinyl chloride), PET (polyethylene terephthalate) resin, etc.
PVC has become a problem in terms of pollution and hygiene, and PET resin containers are now being widely used as bottles for carbonated drinks.

However, ramune bottles are made by placing glass beads inside and tightening the mouth from both sides, and the carbon dioxide gas pushes up the glass beads to seal the bottle, so it is made into a synthetic resin for use in ramune bottles. That was difficult.

Although ramune bottles are an excellent idea in that they are kept airtight with built-in glass beads and rubber rings, they have a fatal drawback as a beverage container: they cannot be cleaned aseptically, and they have a shorter shelf life than cider bottles. shellfish.

However, since this ramune bottle has a different structure and is particularly popular with children, safety and hygiene of the bottle container are important, and something that satisfies these requirements has been desired.

(Purpose of the invention) The present invention solves the problems of the conventional art, and aims to provide a ramune container made of synthetic resin that takes advantage of the characteristics of a ramune bottle and is safe and sanitary.

(Structure of the invention) A lower container main body which is a bottomed cylinder and has an opening at the upper end, a drinking spout at the upper end, and an opening that engages with the lower container main body at the lower end, and the drinking an upper container body whose opening is provided with a packing member such as rubber for receiving a ball, and an intermediate plate member having a through hole, which is sandwiched between the lower container main body and the upper container main body via a packing member. and balls filled in the upper container body, and the lower container body is molded from a synthetic resin having gas barrier properties. With this configuration, the pressure from carbon dioxide gas pushes up the ball (glass bead) through the through hole in the intermediate plate member, which is much smaller than the inner diameter of the container body, and presses it against the packing member, such as rubber, provided inside the drinking spout. When the container is sealed by pressing the bottle down, and the bottle is opened by pressing down on the ball, bubbles spill out from the spout due to the foaming action of carbon dioxide gas, creating a structure unique to ramune bottles. Furthermore, by making the lower container main body, upper container main body, intermediate plate, etc. of synthetic resin, the ramune container can be made lightweight, safe, and sanitary.

Embodiment In FIGS. 1 and 2, a ramune container 1 is a cylinder with a bottom, and has a lower container body 3 made of synthetic resin and having an opening 2 with a smaller diameter at one end, and has a structure unique to ramune bottles. A ring-shaped packing member 5 made of rubber or the like that receives the glass beads (balls) 4 pushed up by the pressure of carbon dioxide inside the container can be pressed against the inner wall of the spout 6, and when the container is opened, It has a convex cylindrical upper container body 8 provided with a protrusion 7 for receiving a glass ball 4.

The lower container body 3 and the upper container body 8 are connected to the packing member 1 by an intermediate plate member 12 having a through hole 9.
1, a threaded part 13 is provided on the inner wall of the opening of the upper container body 8, and a threaded part 13' is provided on the outer wall of the opening of the lower container main body 3, thereby screwing them together.

By providing the intermediate plate member 12 with a narrow slit-like through hole 9, the glass beads 4 can be pushed up by the pressure of carbon dioxide gas, similar to the role of the necked part of the body of a conventional glass bottle container. , thereby being sealed. Further, when the glass beads 4 are pressed down, a bubbling action occurs due to carbon dioxide gas.

The lower container body 3 is made of PET resin or the like with gas barrier properties and is made by stretch blow molding, and the upper container body 8 is made of synthetic resin such as PP (polypropylene) ABS or styrene and made by injection molding or the like. Blow molding polyester (PET) resin produces containers with uneven thickness that are opaque due to its high crystallinity and high melting point. For this reason, if the extruded balisong (tube-shaped preform) is stretched to about twice its original size using a stretch-oriented blow method, etc.
It becomes oriented and strong, and the wall thickness becomes thinner, allowing for rapid cooling, which allows transparent containers to be molded. When the resin is biaxially stretched using this method,
Resins have improved physical properties such as improved transparency, reduced creep, increased impact strength, and reduced permeability to gas and water vapor, making it possible to form thin walls, making them more transparent, and lowering costs. The thus-made synthetic resin ramune container 1 of the present invention is used as a container by fixing the lower container body 3 and the upper container body 8 using the threaded portions 13 and 13', and is also used as a container through the through hole 9 of the intermediate plate member 12. Therefore, the pressure of the carbon dioxide gas inside the container body 3 pushes the glass bead 4 up and presses it against the packing member 5 provided inside the spout 6 to seal it, and conversely, when the glass bead 4 is pushed down, the carbon dioxide gas It is possible to create a structure unique to ramune bottles in which foam spills out from the spout 6 due to the foaming action of the bottle.

(Effects) Since the present invention consists of the above configuration,
It is safe because it does not break even when cooled quickly like glass bottles, and it is also lightweight, saving resources.
This is advantageous in terms of energy saving and cost reduction. Furthermore, ramune bottles have a complicated shape and have lower internal pressure resistance than regular glass bottles, and cola, cider, etc. have an internal pressure of 2 to 4 kg/ ^cm2 at room temperature, so it is necessary to test the strength of glass bottles. However,
By using resin, these steps can be eliminated.

In addition, the properties of resins have been improved by biaxial stretching, which improves the permeability of contents, light-shielding properties, transparency, hygienic properties, and
It has improved chemical resistance, stress cracking, decorative properties, waste disposal properties, buckling strength, impact strength, and pressure resistance, making it a remarkable feature compared to glass bottles.

In addition, PET resin does not contain nitrogen in its molecular structure and is completely composed of the three elements carbon, hydrogen, and oxygen, so it is highly safe.

Ramune bottles had some drawbacks in terms of hygiene due to their structure, but since the container was divided into two and sealed, sterilization was easy and sanitary. Furthermore, since ramune is sold as a soft drink for children, rather than a colorless and transparent container, the lower and upper container bodies can be colored in different colors, or the outside of the container can be printed to create character products such as manga. You can also draw.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a synthetic resin Ramune container according to the present invention, and FIG. 2 is a cross-sectional view taken from the - line in FIG. 1. 2... Opening, 3... Lower container body, 4... Gala ball (ball), 5... Packing member, 6...
Drinking spout, 7... Protrusion, 8... Upper container body, 9...
...through hole, 11...packing member, 12...intermediate plate member.

Claims (1)

[Claims for Utility Model Registration] A lower container body that is a cylinder with a bottom and has an opening at the upper end, a drinking spout at the upper end, and an opening that engages with the lower container body at the lower end. , an upper container main body comprising a packing member such as rubber for receiving a ball in the drinking spout, and a through hole sandwiched between the lower container main body and the upper container main body via a packing member. A synthetic resin ramune container comprising an intermediate plate member and balls filled in the upper container body, and in which at least the lower container body is molded from a synthetic resin having gas barrier properties.